EP0456569A1 - Flüssige, weichmachende und antistatische nichtionische Detergenszusammensetzung mit die Schmutzabstossung förderndem PET-POET-Polymer - Google Patents

Flüssige, weichmachende und antistatische nichtionische Detergenszusammensetzung mit die Schmutzabstossung förderndem PET-POET-Polymer Download PDF

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Publication number
EP0456569A1
EP0456569A1 EP91401185A EP91401185A EP0456569A1 EP 0456569 A1 EP0456569 A1 EP 0456569A1 EP 91401185 A EP91401185 A EP 91401185A EP 91401185 A EP91401185 A EP 91401185A EP 0456569 A1 EP0456569 A1 EP 0456569A1
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Prior art keywords
weight
detergent
alkyl
detergent composition
sulfonate
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French (fr)
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Harold E. Wixon
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Colgate Palmolive Co
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Colgate Palmolive Co
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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/86—Mixtures of anionic, cationic, and non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C11D3/0015—Softening compositions liquid
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0036—Soil deposition preventing compositions; Antiredeposition agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3715—Polyesters or polycarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/123—Sulfonic acids or sulfuric acid esters; Salts thereof derived from carboxylic acids, e.g. sulfosuccinates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/62—Quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • This invention relates to a detergent-softening composition. More specifically, the present invention relates to softening/anti-static compositions adapted for use in the wash cycle of a laundering operation, the composition including as essential ingredients a nonionic detergent, an anionic detergent, a cationic fabric softener-anti-static agent and a soil release promoting polymer of the polyethylene terephthalate-polyoxyethylene terephthalate (PET-POET) type.
  • PET-POET polyethylene terephthalate-polyoxyethylene terephthalate
  • compositions useful for treating fabrics to improve the softness and feel characteristics thereof are known in the art.
  • the fabric softeners When used in domestic laundering, the fabric softeners are typically added to the rinse water during the rinse cycle having a duration of only from about 2 to 5 minutes. Consequently, the consumer is required to monitor the laundering operation or take other precautions so that the fabric softener is added at the proper time. This requires the consumer to return to the washing machine either just prior to or at the beginning of the rinse cycle of the washing operation which is obviously burdensome to the consumer. In addition, special precaution has to be taken to use a proper amount of the fabric softener so as to avoid over dosage which may render the clothes water repellant by depositing a greasy film on the fabric surface, as well as imparting a certain degree of yellowness to the fabrics.
  • Patents 3,537,993; 3,583,912; 3,983,079; 4,203,872, and 4,264,479 specifically disclose combinations of nonionic surface-active agent, cationic fabric softener and another ionic surfactant or modifier, such as zwiterionic surfactants, amphoteric surfactants, and the like.
  • U.S. Patent 3,920,565 discloses a liquid rinse cycle fabric softener composition containing 2 to 15% of a cationic fabric softener and 0.5 to 4.0% of an alkali metal salt of a fatty acid of from 16 to 22 carbon atoms (soap) and optionally, up to 2% of a nonionic emulsifier, the balance water.
  • the di-higher alkyl dimethyl ammonium chlorides are the preferred cationics, although mono-higher alkyl quats are also mentioned.
  • the monohigher alkyl quaternary ammonium compounds such as, for example, stearyltrimethyl ammonium chloride, being relatively water-soluble, are less effective softeners that the di-higher alkyl cationic quaternary softeners (see, for example, U.S. Patent 4,326,965), and, therefore, their use in conjunction with, for example, anionic detergents, such as fatty acid soaps, with which they are capable of forming softening complexes has been suggested for use as rinse cycle fabric softeners:
  • a cationic quaternary ammonium compound as the sole softener, and an anionic sulfonate at a weight ratio of cationic to anionic of from about 80:1 to 3:1 (see U.S. Patent 3,997,453).
  • This patent discloses both mono-higher and di-higher alkyl cationic quaternary softening compounds and also discloses alkyl benzene sulfonates as the anionic compound.
  • the addition of minor amounts of the anionic sulfonate to water dispersions of the excess amount of quaternary softener reduces the viscosity of the dispersion and produces a homogeneous liquid which is readily dispersible in cold water (i.e. the rinse cycle of an automatic washing machine).
  • U.S. Patent 4,222,905 to Cockrell, Jr. discloses laundry detergent compositions which may be in liquid form and which are formulated from certain nonionic surfactants and certain cationic surfactants, including mono-higher alkyl quaternary ammonium compounds, such as tallowalkyltrimethyl ammonium halide, at a nonionic:cationic weight ratio of from 5:1 to about 1:1.
  • Nonionic/cationic mixed surfactant detergent compositions having a nonionic:cationic weight ratio of from about 1:1 to 40:1 in which the nonionic surfactant is of the class having a hydrophilic-lipophilic balance (HLB) of from about 5 to about 17, and the cationic surfactant is of the class of mono-higher alkyl quaternary ammonium compounds in which the higher alkyl has from about 20 to about 30 carbon atom, are disclosed by Murphy in U.S. Patent 4,239,659. This patent provides a general disclosure that other adjunct components may be included in their conventional art-established levels for use which is stated to be from about 0 to about 40%.
  • HLB hydrophilic-lipophilic balance
  • adjunct components including semi-polar nonionic, anionic, zwitterionic and ampholytic cosurfactants, builders, dyes, fillers, enzymes, bleaches, and many others.
  • anionic surfactants there are no examples using, and no disclosure of, anionic surfactants, however, it is stated that the cosurfactants must be compatible with the nonionic and cationic and can be any of the anionics disclosed in U.S. Patent 4,259,217 to Murphy.
  • This latter Murphy patent discloses surfactant mixtures of nonionic surfactants having an HLB of from about 5 to about 17 and a cationic surfactant, inclusive of mono-higher alkyl quaternary ammonium compounds, at a nonionic:cationic weight ratio of from 5.1:1 to about 100:1.
  • the detergent compositions may contain up to about 50%, preferably from about 1 to about 15%, of anionic surfactants and/or zwitterionic surfactants.
  • the anionic surfactants include, among others, linear alkyl benzene sulfonates and alkyl ether sulfates.
  • Example XV in column 40 of this patent describes a heavy duty liquid laundry detergent composition of the following formula:
  • a liquid laundry detergent and fabric softener composition which contains about 3-35% by weight of a nonionic surfactant, about 3-30% by weight mono-higher alkyl quaternary ammonium compound cationic surfactant and a mixture of anionic surfactants including (a) C4-C10 alcohol sulfates and (b) C12-C22 alcohol ethoxylated ether sulfates or carboxylates is disclosed in U.S. Patent 4,264,457 to seeks and Wysocki.
  • the mole ratio of total cationic surfactant to total anionic surfactant can vary from 0.8:1 to 10:1. According to the patentees, the selection of and proportions of the two specific anionic surfactants to the exclusion of other known anionic surfactants is essential to obtain the maximal effectiveness for detergency, softness and anti-static properties.
  • the present inventor has also previously discovered that softening and anti-static performance of a detergent compound and a cationic mono-higher alkyl quaternary ammonium compound fabric softening agent is significantly enhanced by using the cationic softener as an approximately 1:1 complex with an anionic surfactant which is a linear alkyl aromatic sulfonate.
  • This discovery is the subject matter of Applicant's copending application Serial No. 661,775, filed October 17, 1984, the disclosure of which is incorporated herein by reference.
  • this enhancement of the softening/anti-static performance was achieved without sacrificing, and in some cases, with significant improvement in the whitening and cleaning performance.
  • liquid nonionic detergent compositions based on the complex of the cationic fabric softener and linear alkyl benzene sulfonate
  • the present inventor has also previously discovered that further improvements in overall cleaning performance and the ability to form complexes of the mono-higher alkyl quaternary fabric softener with a broader range of commercially available anionic detergents can both be attained by adding to the composition an additional surfactant compound which is a sulfosuccinamate compound.
  • This discovery is the subject matter of Applicant's copending Serial No. 873,486, filed June 12, 1986, the disclosure of which is incorporated herein by reference.
  • the incorporation of the sulfosuccinamate compound significantly boosts detergency of the nonionic/cationic mixture with or without the additional benefits of other anionic surfactants.
  • PET-POET polyethylene terephthalate-polyoxyethylene terephthalate
  • U.S. Patent 3,557,039 to McIntyre et al. shows the preparation of such copolymers by the ester interchange and subsequent polymerization of dimethyl terephthalate (DMT) and ethylene glycol (EG) in the presence of a mixed catalyst system of calcium acetate hemihydrate and antimony trioxide.
  • DMT dimethyl terephthalate
  • EG ethylene glycol
  • a similar reaction is shown in U.S. Patent 3,959,280 to Hays, this patent further using polyethylene oxide as one reactant in addition to DMT and EG monomers.
  • the PET-POET copolymers of Hays are characterized by a molar ratio of ethylene terephthalate units to polyethylene oxide terephthalate units of from about 25:75 to about 35:65, by the polyethylene oxide of the polyethylene oxide terephthalate having a molecular weight of from about 300 to 700, by a molecular weight of about 25,000 to about 55,000, and by a melting point below 100°C.
  • U.S. Patent 3,652,713 forms antistatic fibers, films and other shaped articles from compositions in which polyethylene terephthalate is mixed with a polyether-polyester block copolymer such that the polyether segment constitutes from 0.1 to 10.0% by weight based on the total weight of the mixture.
  • the polyether-polyester block copolymer can be prepared by melt-polymerizing (condensation polymerization) polyethylene terephthalate of number average molecular weight of from 1,000 to 2,000 with polyethylene glycol having a number average molecular weight of from 1,000 to 50,000 at a highly reduced pressure and elevated temperature in the presence of antimony trioxide and trimethyl phosphate.
  • ester exchange catalyst for example, antimony oxides, calcium acetate, tetralkyltitanates and stannous octoate.
  • U.S. Patent 4,125,370 to Nicol discloses PET-POET soil release promoting random copolymers having an average molecular weight in the range of about 5,000 to about 200,000, with a molar ratio of ethylene terephthalate to polyethylene oxide terephthalate of from about 20:80 to 90:10, the polyethylene oxide linking unit having a molecular weight in the range from about 300 to 10,000.
  • These polymers can be prepared according to the procedure disclosed in the aforementioned Patent 3,959,280 to Hays or by the process described in U.S. Patent 3,479,212 to Robertson et al.
  • PET-POET soil release promoting polymers are also commercially available, for example, the products Alkaril QCJ and QCF from Alkaril Chemicals, Inc.; Milease T from ICI America; and Zelcon from E. I. duPont de Nemours & Co.
  • British Published Patent Application 2,123,848 A overcomes this tendency by uniformly distributing the PET-POET copolymer throughout the particulate detergent product by preparing particles of a builder or a mixture of builders for a non-ionic detergent, dissolving and/or dispersing in such non-ionic detergent in liquid state a substantially anhydrous soil release promoting PET-POET polymer, and spraying such liquid non-ionic detergent-polymer mixture onto moving surfaces of the builder particles to distribute such non-ionic detergent and polymer over such particles.
  • liquid non-ionic detergent compositions based on the complex of the cationic fabric softener and anionic detergents such as linear alkyl benzene sulfonate, and while stable compositions of PET-POET polymers with non-ionic detergents have been achieved, there still exists a problem of incompatibility when formulating liquid detergents containing both cationic fabric softeners and commercially available PET-POET soil release promoting copolymers.
  • an aqueous laundry detergent composition useful for washing and softening soiled fabrics comprising a nonionic detergent, an anionic detergent, a cationic fabric softener-anti-static agent and a water-soluble fraction of a polyethylene terephthalate-polyoxyethylene terephthalate soil release promoting polymer.
  • nonionic surfactants which are contemplated can generally be any of the nonionics known to be useful as detergents for cleaning soiled fabrics.
  • Suitable nonionic surface active agents are commercially available and are derived from the condensation of an alkylene oxide or equivalent reactant and a reactive-hydrogen hydrophobe.
  • the hydrophobic organic compounds may be aliphatic, aromatic or heterocyclic, although the first two classes are preferred.
  • the preferred types of hydrophobes are higher aliphatic alcohols and alkyl phenols, although others may be used such as carboxylic acids, carboxamides, mercaptans, sulphonamides, etc.
  • the ethylene oxide condensates with higher-alkyl phenols or higher fatty alcohols represent preferred classes of nonionic compounds.
  • the hydrophobic moiety should contain at least about 6 carbon atoms, and preferably at least about 8 carbon atoms, and may contain as many as about 50 carbon atoms or more, a preferred range being from about 8 to 22 carbon atoms, especially from 10 to 18 carbons for the aliphatic alcohols, and 12 to 20 carbons for the higher alkyl phenols.
  • the amount of alkylene oxide will vary considerably depending upon the hydrophobe but as a general guide and rule, at least about 3 moles of alkylene oxide per mole of hydrophobe up to about 200 moles, preferably from about 3 to 50 moles, more preferably 5 to 20 moles of alkylene oxide per mole hydrophobe will provide the required cleaning performance and compatibility with the other components.
  • nonionic surfactants are represented by the formulae RO(CH2CH2O)n H
  • R is a primary or secondary alkyl chain of from out 8 to 22 carbon atoms and n is an average of from 5 to 50, preferably 5 to 20, especially 6 to 13;
  • R1 is a primary or secondary alkyl chain of from 4 to 12 carbon atoms, and m is an average of 5 to 50, preferably 5 to 20, especially 6 to 13.
  • the preferred alcohols from which the compounds of formula (I) are prepared include lauryl, myristyl, cetyl, stearyl and oleyl and mixtures thereof.
  • Especially preferred values of R are C10 to C18 with the C12 to C15 alkyls and mixtures thereof being especially preferred.
  • R1 in formula (II) are from C6 to C12, with C9 and C9, including octyl, isooctyl and nonyl being especially preferred.
  • Typical examples of a nonionic compound of formula (I) are lauryl alcohol condensed with 5 or 7 or 11 moles ethylene oxide.
  • Typical examples of a nonionic compound of formula (II) are isooctyl phenol or nonyl phenol condensed with 3 to 8 moles ethylene oxide.
  • nonionic compounds which may be used include the polyoxyalkylene esters of the organic acids such as the higher fatty acids, the rosin acids, tall oil acids, acids from petroleum oxidation products, etc. These esters will usually contain from about 10 to about 22 carbon atoms in the acid moiety and from about 3 to about 30 moles of ethylene oxide or its equivalent.
  • nonionic surfactants are the alkylene oxide condensates with the higher fatty acid amides and amines.
  • the fatty acid group will generally contain from about 8 to about 22 carbon atoms and this will be condensed with about 3 to about 30 moles of ethylene oxide as the preferred illustration.
  • the corresponding carboxamides and sulphonamides may also be used as substantial equivalents.
  • nonionic surfactants formed with propylene oxide, preferably mixture of ethylene oxide and propylene oxide.
  • nonionic surfactants sold under the well-known Plurafac series such as Plurafac B-26, the reaction product of a higher linear alcohol and a mixture of ethylene and propylene oxides, containing a mixed chain of ethylene oxide and propylene oxide, terminated by a hydroxyl group.
  • the number of lower alkoxides will usually be from 40% to 100% of the number of carbon atoms in the higher alcohol, preferably 40 to 60% thereof and the nonionic detergent will preferably contain at least 50% of such preferred poly-lower alkoxy higher alkanol.
  • Higher molecular weight alkanols and various other normally solid nonionic detergents and surface active agents may be contributory to gelation of the liquid detergent formulations and consequently, will preferably be omitted or limited in quantity in the present liquid compositions, although minor proportions thereof may be employed for their cleaning properties, etc.
  • the alkyl groups present therein will most preferably be linear although a minor degree of slight branching may be tolerated, such as at a carbon next to or two carbons removed from the terminal carbon of the straight chain and away from the ethoxy chain, if such branched alkyl is no more than three carbon: in length. Normally the proportion of carbon atoms in such a branched configuration will be minor, rarely exceeding 20% of the total carbon atom content of the alkyl.
  • linear alkyls which are terminally joined to the ethylene oxide chains are highly preferred and are considered to result in the best combination of detergency, biodegradability and non-gelling characteristics, medial or secondary joinder to the ethylene oxide in the chain may occur. It is usually in only a minor proportion of such alkyls, generally less than 50% but, as is in the case of, for example, the Tergitols, may be greater. Also when propylene oxide is present in the lower alkylene oxide chain, it will usually be less than 20% thereof and preferably less than 10% thereof, although higher percentages may also be used as in some of the Plurafacs.
  • the amount of the nonionic will generally be the minimum amount which when added to the wash water will provide adequate cleaning performance. Generally, amounts ranging from about 1 to about 50%, preferably from about 10 to about 40%, and especially preferably from about 12 to 35% by weight of the composition, can be used.
  • a second essential ingredient in the instant formulations is the cationic fabric softener.
  • Softening agents are used to render fabrics or textiles soft, and the terms "softening” and “softener” refer to the handle, hand, touch or feel; this is the tactile impression given by fabrics or textiles to the hand or body and is of aesthetic and commercial importance.
  • the cationic fabric softeners used in the present invention are the mono-higher alkyl quaternary ammonium compounds represented by the following formula: wherein R2 is a long chain aliphatic radical having from 10 to 22 carbon atoms, and the three R3's are, independently, lower alkyl or hydroxy alkyl radicals and X is a water-soluble, salt-forming anion such as halide, i.e.
  • the carbon chain of the aliphatic radical containing 10 to 22 carbon atoms, especially 12 to 20, preferably 12 to 18, and especially preferably 16 to 18 carbon atoms, may be straight or branched, and saturated or unsaturated.
  • the lower alkyl radicals have from 1 to 4 carbon atoms, preferably 1 or 2 carbon atoms, especially preferably methyl, and may contain a hydroxyl radical.
  • the long carbon chains are obtained from long chain fatty acids, such as those derived from tallow and soybean oil.
  • the terms "soya” and “tallow”, etc., as used herein refer to the source from which the long chain fatty alkyl chains are derived. Mixtures of the quaternary ammonium compound fabric softeners may be used.
  • the preferred ammonium salt is a mono-higher alkyl trimethyl ammonium chloride wherein the alkyl group is derived from tallow, hydrogenated tallow or stearic acid.
  • quaternary ammonium softening agents of the formula III) suitable for use in the composition of the present invention include the following: tallow trimethyl ammonium chloride, hydrogenated tallow trimethyl ammoniun chloride, trimethyl stearyl ammonium chloride, triethyl stearyl ammonium chloride, trimethyl cetyl ammonium chloride, soya trimethyl ammonium chloride, stearyl dimethylethyl ammonium chloride, tallow-diisopropylmethyl ammonium chloride, the corresponding sulfate, methosulfate, ethosulfate, bromide and hydroxide salts thereof, etc.
  • Another useful class of commercially available quaternary ammonium fabric softener compounds are the ethoxylated compounds of formula (IV): wherein X, R2 and R3 are as defined for formula (III) and x and y are each positive numbers of at least 1 and the sum x + y is from 2 to 15.
  • the amount of the monoalkyl quaternary cationic fabric softener can generally range from about 1 to about 20%, preferably from about 2 to about 16%, and especially preferably from about 2 to 10%, by weight of the composition.
  • the weight ratio of the nonionic surface active agent to the cationic fabric softener can be within the range of from about 1:1 to 15:1, preferably from about 1.5:1 to 10:1, especially preferably from about 2:1 to 8:1.
  • the anionic detergents which are contemplated can generally be any of the anionics known to be useful in the formulation of detergents for cleaning soiled fabrics.
  • the most preferred anionic detergent is a sulfosuccinamate surfactant.
  • These compounds are characterised by having a 10 to 22 open chain hydrocarbon substituent bonded to the nitrogen atom of the carbonamide group present at one carboxy terminal end group of the succinamate moiety, and by the sulfonyl (-SO3-) group bonded to one of the carbon atoms at the alpha- or beta-position with respect to the carbonamide group.
  • sulfosuccinamate compound examples include disodium N-octadecyl sulfosuccinamate (available as Alkasurf SS-TA from Alkaril Chemicals, or as ASTROMID 18 from Alco Chemical Corp.), disodium N-oleyl sulfosuccinamate (available from Alkaril Chemicals as Alkasurf SS-OA); tetrasodium N-(1,2-dicarboxyethyl)N-octadecyl sulfosuccinamate (available as ASTROMID 22 from Alco Chemical Corp., as Monawet SNO-35 from Mona Industries, Inc. or Aerosol 22 from American Cyanamid Corp.).
  • sulfosuccinamate compounds can be represented by the following general formula (V):
  • Z is a monovalent salt-forming cation, such as alkali metal, ammonium and amine,
  • R4 is hydrogen, lower alkyl, carboxy(lower alkyl), or 1,2-dicarboxy(lower alkyl), and
  • R5 is an open chain hydrocarbon of from 10 to 22 carbon atoms.
  • alkali metal sodium potassium, or lithium are preferred and sodium is especially preferred.
  • the monovalent amine salt forming cation may be, for example, a mono-, di-, or tri-lower alkanolamine, such as mono-, di-, or triethanolamine.
  • the "lower alkyl” group can have from 1 to 5, preferably 1 to 3, especially preferably 1 to 2 carbon atoms.
  • the open chain hydrocarbon for R5 may be saturated or unsaturated, and may be a straight chain or branched chain group, preferably an alkyl or alkenyl of from 14 to 18, especially 16 to 18 carbon atoms, such as, for example, tallow, hydrogenated tallow, fractionated tallow, oleyl, octadecyl, stearyl, etc.
  • R4 is carboxy(lower alkyl) or 1,2-dicarboxy(lower alkyl), such as carboxyethyl, carboxypropyl, carboxy-2-methyl-ethyl, 1,2-dicarboxyethyl, etc.
  • the carboxyl group or groups may be in the form -COOY where Y is the group Z or lower alkyl; preferably Y is Z, especially preferably sodium.
  • the amount of the sulfosuccinamate must be carefully selected depending on such factors as the nature and amount of ithe nonionic surfactant and cationic fabric softener, the particular sulfosuccinamate, as well as the anticipated washing conditions, including, for example, type of fabrics, soils, wash temperature, water hardness, etc.
  • the weight ratio of (b):(c) should generally be within the range of from about 3:1 to 1:3, preferably from about 2:1 to 1:2, especially preferably from about 1.3:1 to 1:2. further, the weigh ratio of (a):(b)+(c) is from about 10:1 to 1:1, preferably 6:1 to 1.5:1.
  • the nonionic is a C12-C15 alcohol ethoxylated with an average of 7 moles ethylene oxide per mole of alcohol, (such as the Shell Oil Co. product Neodol 25-7) in an amount of from about 15 to 25% by weight of the total composition
  • the monoalkyl quaternary fabric softener is tallow trimethyl ammonium chloride
  • the sulfosuccinamate is tetrasodium N-(1,2-dicarboxyethyl)-N-octadecyl sulfosuccinamate (e.g.
  • the preferred ratios of the nonionic to quaternary and quaternary to the sulfosuccinamate are in the range of from about 12:1 to 4:1 and from about 1:1 to 1:2, respectively, under typical washing conditions, e.g. 120°F, 0.2% product concentration, 100 ppm hardness ions, for a broad range of fabrics and soils.
  • anionic detergents may be utilized in the present invention, in lieu of the sulfosuccinamate surfactant, but in a particularly preferred embodiment of the invention the sulfosuccinamate surfactant is utilized in conjunction with an anionic surfactant.
  • the softening and antistatic performance of the mixture of nonionic surfactant and mono-higher alkyl quaternary ammonium compound fabric softening agent is significantly enhanced by the use of a linear alkyl aromatic sulfonate surfactant, preferably as a 1:1 molar complex with the quaternary fabric softener.
  • anionic surfactants include the water-soluble salts, e.g. the sodium, potassium, ammonium, alkylolammonium salts of higher linear alkyl aromatic sulfonates containing about 8 to 26 carbon atoms, preferably 10 to 22 carton atoms, in the alkyl radical.
  • alkyl includes the alkyl portion of the higher acyl radicals.
  • linear alkyl aromatic sulfonates are those containing from 10 to 16 carbon atoms in the linear alkyl radical, e.g., the sodium, potassium, and ammonium salts of higher linear alkyl benzene sulfonates, higher linear alkyl toluene sulfonates, higher linear alkyl phenol sulfonates, and higher linear alkyl naphthalene sulfonates.
  • the linear higher alkyl benzene sulfonates such as the C10-C16 alkyl, especially C10-C14 alkyl, for example C12 (n-dodecyl) alkyl benzene sulfonates, are especially preferred anionic surfactants.
  • detergent compositions include the alkyl ether sulfates of formula R6O(CH2CH2O)p-SO3M,
  • R6 is higher alkyl having from 8 to 20, especially 10 to 18, carbon atoms
  • M is a solubilizing salt-forming cation, such as an alkali metal ion, alkaline earth metal ion, ammonium ion, ammonium ion substituted with from 1 to 3 lower alkyls, or mono-, di- and tri-alkanolamines having 2 to 3 carbon atoms in the alkanol group or groups, and p is a number of from 2 to 8, preferably 2 to 6 (especially from 1/5 to 1/3 or 1/2 the number of carbon atoms in R6).
  • a preferred polyethoxylated alcohol sulfate surfactant is available from Shell Chemical Company and is marketed as Neodol 25-3S.
  • Neodol 25-3S is the sodium salt
  • the potassium salt and other suitable soluble salts of the triethenoxy higher alcohol (12 to 15 carbon atoms) sulfate and other such compounds herein described, such as have already been referred to and those described below, may also be used in partial or complete substitution for the sodium salts.
  • An with the various materials of the present compositions, mixtures thereof may be utilized.
  • Examples of the higher alcohol polyethenoxy sulfates which may be employed as the anionic surfactant constituent of the present liquid detergents or as partial substitutes for this include: mixed C12 ⁇ 15 normal or primary alkyl triethenoxy sulfate, sodium salt; myristyl triethenoxy sulfate, potassium salt; n-decyl diethenoxy sulfate, diethanolamine salt; lauryl diethenoxy sulfate, ammonium salt; palmityl tetraethenoxy sulfate, sodium salt; mixed C14 ⁇ 15 normal primary alkyl mixed tri- and tetraethenoxy sulfate, sodium salt; stearyl pentaethenoxy sulfate, trimethylamine salt; and mixed C10 ⁇ 18 normal primary alkyl triethenoxy sulfate, potassium salt.
  • Minor proportions of the corresponding branched chain and medially alkoxylated detergents such as those described above but modified to have the ethoxylation at a medial carbon atom, e.g. one located four carbons from the end of the chain, may be employed and the carbon atom content of the higher alkyl will be the same.
  • the joinder to the normal alkyl may be at a secondary carbon one or two carbon atoms removed from the end of the chain. In either case, as previously indicated, only minor proportions should be present, such as 10 or 20%, in the usual case.
  • the present poly-lower alkoxy higher alkanol sulfates are readily biodegradable and of better detergency when the fatty alkyl is terminally joined to the poly(lower oxyalkylene) chain, which is terminally joined to the sulfate.
  • a small proportion for example, mot more than 10%, of branching, and medial joinder are tolerable.
  • the alkyl in the anionic alkoxylate surfactant as in the nonionic detergent is a mixture of different chain lengts, as 11, 12, 13, 14 and 15 carbon atoms or 12 and 13 carbon atom chains, rather than all of one chain length. Nevertheless, the invention is applicable to liquid detergents containing pure nonionic and anionic components.
  • ethylene oxide is the preferred lower alkylene oxide of the anionic alkoxylate surfactant, as it is with the nonionic detergent, and the proportion thereof in the polyethoxylated higher alkanol sulfate is preferably 2 to 5 mols of ethylene oxide groups present per mol of anionic surfactant and in more preferred compositions from 2 to 4 mols will be present, with three mols being most preferred, especially when the higher alkanol is of 12 to 13 carbon atomns or 11 or 12 to 15 carbon atoms.
  • the ethylene oxide content of the detergent may be reduced to about two mols per mol; whereas, when the higher alkanol is of 16 to 18 carbon atoms, in the higher part of the range, the number of ethylene oxide groups may be increased to 4 or 5 and in some cases to as high as 8 or 9.
  • the salt-forming cation may be altered to obtain the best solubility. It may be any suitable solubilizing metal or radical but will most frequently be alkali metal, e.g. sodium, or ammonium.
  • alkyls and alkanols will usually contain from 1 to 4 carbon atoms and the amines and alkanolamines may be mono-, di- and tri-substituted, as in monoethanolamine, diisopropanolamime and trimethylamine.
  • the poly-lower alkoxy higher alkanol sulfates and the linear alkyl aromatic sulfonates are highly preferred anionic surfactants in the present compositions but other anionic surfactants may be employed with them or in place of such compounds.
  • alpha-olefin sulfonates, paraffin sulfonates and higher alcohol sulfates may be used.
  • the olefin sulfonate salts generally contain long chain alkenyl sulfonates or long chain hydroxyalkane sulfonates (with the OH being on the carbon atom which is not directly attached to the carbon atom bearing the -SO3H group).
  • the olefin sulfonate detergent usually comprises a mixture of such types of compounds in varying amount, often together with long chain disulfonates or sulfate-sulfonates.
  • Such olefin sulfonates are described in many patents, such as U.S. patent Nos. 2,061,618; 3,409,637; 3,332,880; 3,420,875; 3,428,654; 3,506,580 and British Patent No. 1,129,158.
  • the number of carbon atoms in the olefin sulfonate is usually within the range of 10 to 25, more commomly 10 to 20, or 12 to 18, e.g. a mixture principally of C12, C14 and C16, having an average of about 14 carbon atoms, or a mixture principally of C14, C16 and C14, having an average of about 16 carbon atoms.
  • paraffin sulfonates are primary or secondary paraffin sulfonates made by reacting long chain alpha-olefins and bisulfites, e.g. sodium bisulfite, or paraffin sulfonates having the sulfonate groups distributed along the paraffin chain, such as the products made by reacting a long chain paraffin with sulfur dioxide and oxygen under ultraviolet light, followed by neutralization with sodium hydroxide or other suitable base (as in U.S. Patents 2,503,280; 2,507,088; 3,260,741; 3,372,188, and German Patent 735,096).
  • the paraffin sulfonates preferably contain from 13 to 17 carbon atoms and will normally be the monosulfonate but if desired, may be di-, tri- or higher sulfonates. Typically, the di- and poly-sulfonates will be employed in admixture with a corresponding monosulfonate, for example, as a mixture of mono- and di-sulfonates containing up to about 30% of the disulfonate.
  • the hydrocarbon substituent thereof will preferably be linear but if desired, branched chain paraffin sulfonates can be employed, although they are not as good with respect to biodegradability.
  • paraffin sulfonate may be terminally sulfonated or the sulfonate substituent may be joined to the 2-carbon or other carbon atom of the chain and, similarly, any di- or higher sulfonate employed may have the sulfonate groups distributed over different carbons of the hydrocarbon chain.
  • paraffin sulfonates and olefin sulfonates are used in the form of their alkali metal, e.g. sodium and potassium, ammonium, or mono-, di-, and tri-loweralkanol-amine salts, or mixtures thereof.
  • Triethanolamine is the preferred alkanolamine salt forming cation.
  • the linear alkylbenzene sulfonates and alkyl ether sulfates are especially preferred as the anionic surfactant.
  • anionic surfactants can not only interact with the mono-higher alkyl quaternary compound to improve softening and anti-static performance but also function to cause various additional optional detergent adjuvants, as described in detail more fully below, especially optical brighteners, to deposit more effectively on the fabrics being laundered.
  • the linear alkyl benzene sulfonates are usually slightly more effective than the alkyl ether sulfates in terms of softening performance but slightly inferior in terms of cleaning performance - although the addition of any anionic surfactant often provides only slight improvements in cleaning performance as compared to the same composition without anionic surfactant.
  • the anionic surfactants can be used.
  • ratio of cationic to anionic is particularly critical since large excesses of either component could interfere with overall performance. Accordingly, ratios of cationic to anionic of from about 1.3:1 to 1:1,5, preferably 1.2:1 to 1:1.2, especially preferably 1.1:1 to 1:1.1 and most preferably about 1:1 will provide improved softening performance and anti-static performance, as well as improved whitening and perhaps cleaning.
  • the total amount of the cationic/anionic softener mixture in the composition generally will range from about 2 to 20%, preferably 5 to 15%, by weight based on the total composition. Moreover, the total amount of cationic softener and anionic surfactant will generally be in the range of from about 20 to 100%, preferably 30 to 80%, by weigt, based on the nonionic surfactant. Furthermore, within the above amounts and ratios, the cationic/anionic softener mixture will be compatible with the nonionic surfactant, sulfosuccinamade and the optical brightemer, etc.
  • the total amount of anionic detergent should be within the range of 1 to 30% by weight of the total composition, preferably, 2 to 26% by weight.
  • the anionic detergent comprises a sulfosuccinamate compound and an anionic surfactant selected from the group consisting of linear higher alkyl aromatic sulfonate, poly(lower alkoxy)higher alkanol sulfonate, olefin sulfonate and paraffin sulfonate with the sulfosuccinamate compound being present in an amount of 2 to 20% by weight of the total composition and the anionic surfactant being present in an amount of up to 10% by weight of the total composition.
  • the weight ratio of the cationic fabric softener-anti-static agent to the sulfosuccinamide compound is in the range of from about 3:1 to 1:3; and the weight ratio of the cationic fabric softener-anti-static agent to said anionic surfactant selected from the group consisting of linear higher alkyl aromatic sulfonate, poly(lower alkoxy)higher alkanol sulfonate, olefin sulfonate and paraffin sulfonate is in the range of from about 1.3:1 to 1:1.5.
  • the weight ratio of the sulfosuccinamate compound to the anionic surfactant selected from the group consisting of linear higher alkyl aromatic sulfonate, poly(lower alkoxy)higher alkanol sulfonate, olefin sulfonate and paraffin sulfonate is in the range of from about 1.3:1 to about 1:1.5, most preferably, about 1.2:1 to 1:1.2.
  • the soil release promoting polymer which as a water-soluble fraction is an essential component of the compositions of this invention is a polymer of polyethylene terephthalate and polyoxyethylene terephthalate which is dispersible in water and is depositable from wash water containing nonionic detergent onto synthetic organic polymeric fibrious materials, especially polyesters and polyester blends, so as to impart soil release properties to them, while maintaining them comfortable to a wearer and not preventing or significantly inhibiting vapor transmission through them.
  • Such polymers have also been found to possess anti-redeposition properties. They tend to maintain soil, such as oily soil, dispersed in wash water during washing and rinsing, so that it is not redeposited on the laundry.
  • Useful products are copolymers of ethylene glycol or another suitable source of ethylene oxide moiety, such as polyoxyethylene glycol and terephthalic acid or a suitable source of the terephthalic moiety.
  • the copolymers may also be considered to be condensation products of polyethylene terephthalate, sometimes referred to as ethylene terephthalate polymer, and polyoxyethylene terephthalate. While the terephthalate moiety is preferred as the sole dibasic acid moiety in the polymer, it is within the scope of the invention to utilize relatively small proportions of isophthalic acid and/or orthophthalic acid (and sometimes other dibasic acids) to modify the properties of the polymer. However, the proportions of such acids will normally be less than 10% of the phthalic moieties present in the final polymer, and, preferably, less than 5%.
  • the weight average molecular weight of the polymer may be as low as 8,000 or as high as 60,000.
  • the polyoxyethylene will be of a molecular weight in the range of about 500 to 10,000 preferably about 2,500 to 5,000, more preferably 3,000 to 4,000.
  • the molar ratio of polyethylene terephthalate units (A) to polyoxyethylene terephthalate units (B) will be within the range of 2:1 to 6:1, preferably 5:2 to 5:1, most preferably 3:1 to 4:1.
  • the proportion of ethylene oxide to phthalic moiety in the polymer will be at least 10:1, preferably 20:1 or more, and most preferably within the range of 20:1 to 30:1.
  • polymers may be considered as having been randomly constructed from polyethylene terephthalate and polyoxyethylene terephthalate moieties such as may be obtained by reacting polyethylene terephthalate (e.g., spinning-grade) and polyoxyethylene terephthalate or reating the ethylene and polyoxyethylene glycols and acid (or acid precursor) thereof.
  • the described materials are available from various sources. Useful copolymers for the manufacture of the water-soluble fraction of the present invention are marketed by Alkaril Chemicals, Inc. and commercial products of such company are sold by them under the trademarks Alkaril QCJ and Alkiril QCF. Products available from them in limited quantities, designated 2056-34B and 2056-41 have also been found to be useful.
  • the QCJ product normally supplied as an aqueous dispersion (about 15% solids) is also available as an essentially dry solid, i.e. the QCF product. When it is anhydrous or low in moisture content (less than about 2% moisture), it looks like a light brown wax in which the molar ratio of ethylene oxide to phthalic moiety is about 22:1.
  • the viscosity at 100°F is about 96 centistokes.
  • the 2056-41 polymer is like a hard, light brown wax and the ethylene oxide to phthalic moiety ratio is about 16 to 1, with the viscosity, under the same conditions as previously mentioned, being about 265 centistokes.
  • the 2056-34B polymer appears to be a hard, brown wax in which the molar ratio of ethylene oxide to phthalic moiety is about 10.9 to 1, and its viscosity, under the same conditions as previously mentioned, is about 255 centistokes.
  • the QCJ/QCF polymers have melting points (differential thermal analysis) of about 50-60°C, a carboxyl analysis of 5 to 30 equivalents/106 grams, and a pH of 6-8 in distilled water at 5 weight % concentration.
  • the above-noted polymers are subjected to a cold filtration process while in aqueous dispersion.
  • This cold filtration process separates a "water-insoluble" fraction as a precipitate which is rich in polyethylene terephthalate and exhibits little or no soil release activity.
  • the filtrate contains a "water-soluble” fraction which exhibits soil release activity and is rich in polyoxyethylene terephthalate.
  • the filtrate may be further separated into active fractions by extraction with an organic solvent, e.g., a polar organic solvent such as an alkyl halide, especially a lower alkyl halide, e.g., methylene chloride.
  • a 5-10% by weight aqueous dispersion of the polyethylene terephthalate-polyoxyethylene terephthalate polymer is chilled to less than 40°F and then filtered to recover insoluble material.
  • the filtrate, so-produced constitutes the "water-soluble" fraction of a polyethylene terephthalate-polyoxyethylene terephthalate soil release promoting polymer used in the present invention.
  • This "water-soluble" fraction may be further extracted with an alkyl halide solvent, such as methylene chloride, to form two sub-fractions either of which may be used in lieu of the total "water-soluble" fraction.
  • filtration may be replaced by any other technique suitable for solid-liquid separation, e.g., decantation, centrifugation, etc.
  • the "water-soluble" fraction may be recovered by drying of the dispersion(s).
  • the liquid carrier for the instant liquid detergent composition is preferably an aqueous one, and may be water alone or may be substantially water with additional solvents added for solubilizing particular ingredients, as is well known in the art. Because of the availability of water and its minimum cost, it is preferred to use water as the major solvent present. Yet, amounts of other solvents, generally up to 20%, and preferably a maxinum of 15% of the total content, may be used. Generally, such a supplementing solvent will be either a lower alkanol or a lower diol or polyol, e.g. ethanol, isopropanol, ethylene glycol, propylene glycol, glycerol, or the like. Etheric polyols such as diethylene glycol and those known as cellosolves may also be used.
  • hydrotropes include the alkali metal aryl sulfonates, such as sodium benzene sulfonate, sodium toluene sulfonate, sodium xylene sulfonate, and the corresponding potassium salts.
  • the hydrotrope can be used in amounts up to about 15%, preferably up to 10% by weight of the total composition, for example, 1 to 8%, or 2 to 6%.
  • non-aqueous liquid carriers such as the organic cosolvents mentioned above, may be used as the sole or major liquid carrier, i.e. the non-aqueous liquid carriers may comprise from about 50 to 100% by weight of the liquid carrier, the balance, if any, constituting water and/or hydrotropic material. Mixtures of two or more organic solvents may also be used.
  • Suitable compatible adjuvants may also be present in the detergent composition to give it additional desired properties, either of functional or aesthetic nature.
  • enzymes e.g. proteases, amylases, lipases, etc., and mixtures thereof; bleaching agents; bleach activators and stabilizers; soil-suspending or anti-redeposition agents, e.g. polyvinyl alcohol, sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose; dyes, bluing agents, pigments, optical brighteners, e.g., cotton, amide and polyester brighteners; bactericides, e.g. hexachlorophene; preservatives, e.g.
  • methyl parasept or sodium benzoate methyl parasept or sodium benzoate
  • ultraviolet absorbers e.g. amines, pH buffers
  • opacifying agents e.g. behenic acid, polystyrene suspensions, etc.
  • perfumes e.g. benzoate
  • the adjuvants will be chosen to be compatible with the main constituents of the detergent formulation.
  • optical brighteners Because the modern housewife has come to expect that washed clothing will no longer merely be clean and white but will also be bright in appearance.
  • the optical brighteners are substantive to textiles being washed (such substantivity may be selective) and sometimes are of comparatively low solubilities. Accordingly, it is important that they be maintained in solution in the liquid detergent composition and, even more important, they must be immediately dispersed in the wash water so as to avoid producing a was containing noticeable brightened spots, rather than a uniformly bright appearance.
  • the choice of brightener to obtain best results will be ascertainable to one of skill in the art.
  • Tinopal UNPA Tinopal CBS
  • Tinopal 5BM Tinopal 5BM
  • Arctic White CC Artic White CWD (Hilton Davis)
  • Phorwhites from BHC, BKL, BUP, BBH solution BRV solution, DCR liquide, DCBVF, EV liquid, DBS liquide and ANR.
  • optical brighteners which give superior whitening effects are those components having no sulfonate moieties.
  • the preferred class of brighteners for use in the present invention include the 2-(4-styrylphenyl)-2H-naphthol[1,2-d] triazoles, 4,4′-bis(1,2,3-triazol-2-yl)stilbenes, 4,4′-bis(styryl) bisphenyls, and the y-aminocoumarins.
  • these brighteners include 4-methyl-7-dimethylamino coumarin, 1,2-bis(benzimidazol-2-yl)ethylene, and the 1,3-diphenyl-phrazolines, as well as 2,5-bis(benzoxazol-2-yl) thiophene, 2-styryl-naphth [1,2-d] oxazole-, and 2-(stilben-4-yl)-2H-naphtho[1,2-d]triazole.
  • the optical brightener content of the liquid composition will normally be from about 0.2% to about 3.0%, and preferably from 0.25 to 2.7%. Such concentrations are soluble in the described liquid detergents and are effective in noticeably brightening the washed clothing. As mentioned above, the presence of the anionic surfactant can enhance the uniform deposition of the optical brightener.
  • the contents of the other adjuvants is preferably maintained at less than 5%, preferably less than 3%, by weight of the product.
  • Use of more than the described proportions of the such compounds can often significantly change the properties, e.g. stability, of the liquid detergent, and therefore should be avoided.
  • liquid detergent softener composition of the present invention is a stable, clear one-phase liquid
  • a compatible opacifying agent may be added to inmpart a creamy appearance to the formulation.
  • Still another optional but highly preferred ingredient in the present detergent compositions is an ethoxylated fatty amine, such as the Ethomeen® series of compounds of Armak Company and the Varonic® series from Ashland Chemicals.
  • Ethomeen® series of compounds of Armak Company and the Varonic® series from Ashland Chemicals.
  • These compounds can be represented by the general formula where R7 is a fatty alkyl group of from about 10 to 22, preferably 12 to 18, carbon atoms and the sum of x + y is from about 2 to about 15.
  • the R7 group may be saturated or unsaturated, and, for example, may be derived from coco fatty acid, oleic acid, soya fatty acid, tallow fatty acid, stearic acid, or mixtures of these acids.
  • the ethoxylated amines contribute to improve cleaning, softening and static control. Usually amounts of the ethoxylated amine up to about 15%, preferably up to about 10%, for example 1-10%, or 1-8%, especially 2-8%, by weight of the total liquid composition are satisfactory.
  • alkaline material include mono-, di- and trialkanolamines, alkyl amines, ammonium hydroxide and alkali metal hydroxies. Of these, the preferred materials are the alkanolamines, preferably the trialkanolamines and of these, especially triethanolamine.
  • the pH of the final liquid detergent, containing such a basic materia will usually be neutral or slightly basic.
  • Satisfactory pH ranges are from, 7 to 10, preferably about 7.5 to 9.5, but because of pH reading of the liquid detergent, using a glass electrode and a reference calomel electrode, may be inaccurate, due to the detergent system often being essentially non-aqueous, a better indication is obtained by measuring the pH of a 1% solution of the liquid detergent in water.
  • Such a pH will also normally be in the range of about 7 to 10, preferably 7.5 to 9.5. In the wash water, the pH will usually be in this range or might be slightly more acidic, as by 0.5 to 1 pH unit, due to the organic acid content of soiled laundry.
  • the viscosity at 25°C will be in the range of 40 to 1000 centipoises, preferably from 40 to 500 centipoises, according to measurements that are made with a Brookfield viscosimeter at room temperature, suing a No. 1 spindle at 12 revolutions per minute.
  • the liquid composition is usually added to wash water in an automatic washing machine of either the top loading or front loading type so that the concentration thereof in the wash water may range from about 0.05 to-1.5%, usually 0.1 to 1.2%.
  • concentration thereof in the wash water may range from about 0.05 to-1.5%, usually 0.1 to 1.2%.
  • the amount of the liquid formulation to be added will range from about 1/4 cup to about 1 1/4 cup, with the typical amount being about 1/2 cup (120 milliliters).
  • the wash water used may be a fairly soft water or water of reasonable hardness, and will generally and preferably be used at elevated temperature, especially at about 100°F or higher, such as 120°F to 180°F or higher.
  • the composition of the present invention is also useful in laundering clothes in very hard waters and at lower temperatures.
  • water hardness may range from 0 to over 300 parts per million calculated as calcium carbonate, and washing temperatures may be from 40° to 120°F or higher. Washing will be effected in an automatic washing machine in which the washing is followed by rinsing and spin or other draining or wringing cycles or operations.
  • the detergent composition may also be used for hand washing of laundry, in which case it may sometimes be used full strength oncertain strains on the laundry, or the laundry may be soaked in a higher concentration solution of detergent before washing.
  • the washing operations will generally take from three minutes to one hour, depending on the fabrics being washed and the degrees of soiling observed. After completion of washing and the spinning, draining or wringing operations, it is preferred to dry the laundry in an automatic dryer soon thereafter but line drying may also be employed.
  • the present detergent-softener composition dissolves very easily whether the was water is warm or cold, and very effectively cleans, softens and elimimates static charge on clothing and other items of laundry without imparting a water repellant finish thereto. It may be used in either top loading or front loading washing machines and may be desirably adjusted to foam to the correct extent.
  • the product is an attractive clear, stable liquid which maintains its activity and uniformity over a long shelf life. In tests in which the effects of using it are compared to those from the employment of commercial liquid laundry detergents, it rated very favorably.
  • This product may be prepared by simply admixing the various ingredients at room temperature with agitation to ensure solubilization thereof in the aqueous medium.
  • the order of addition of ingredients and the temperature of compounding may bevaried without adversely affecting the formation of the single phase, clear liquid product of instant invention.
  • the detergent-softener composition of the present invention exhibits many desirable characteristics with regard to both physical properties and performance in use.
  • the liquid compositions are pourable and free-flowing from the container as manufactured and after aging. They exhibit a high degree of stability upon storage at normal room temperature of the order of about 70°F over a period of many months without any appreciable precipitation.
  • the consumer can utilize them conventionally by addition of very small portions to a laundering bath, and the detergent and softener will be present in constant composition in each portion.
  • the liquid was clear initially and remained clear after storage for 1 week at 110°F.
  • QCF i.e. untreated QCF
  • compatible adjuvant materials may be added to render the final product translucent or opaque as desired, the requirement for a one phase solution of the main ingredients insures that effective washing and softening power will be obtained with each portion and promotes the stability and homogeneity of the product.
  • the composition may be packaged in any suitable container or packaging material such as metal, plastic or glass.
  • Clean swatches of various types were washed in a standard automatic washing machine of the loading type, having a washing drum of 17 U.S. gallons capacity. After addition of the swatches in a standard wash load of about eight pounds, sufficient liquid detergent composition was added to the wash water to provide a detergent composition concentration of 0.22% by weight, the wash water being of about 100 ppm hardness, as calcium carbonate, and having a temparature of 120°F. Two swatches were employed for each of three different fabrics, i.e. single knit Dacron® , double knit Dacron® , and Dacron®/cotton blend (65/35) . The fabrics were washed using a normal wash cycle for the washing machine, including rinsing, and subsequently the swatches were dried.
  • the swatches were soiled in the center thereof with equal volumes (about three drops) of used dirty motor oil and then they were rewashed with the same detergent composition.
  • Whiteness readings (Rd Values) of the stained areas of the swatches were taken, using a reflectometer. Because such readings represent whiteness and the used motor oil was black, the readings were directly proportional to effectiveness of the soil release promoting action of the detergent containing the polyethylene terephthalate-polyoxyethylene terephthalate copolymer or fraction thereof.

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FR2709759A1 (fr) * 1993-09-07 1995-03-17 Colgate Palmolive Co Composition détergente de blanchissage en particules et procédé l'utilisant.
TR27570A (tr) * 1987-04-23 1995-06-13 Fmc Corp Insektisidal siklopropil-ikameli di'(aril) bilesimler.
WO1995020640A1 (de) * 1994-01-31 1995-08-03 Henkel Kommanditgesellschaft Auf Aktien Detergensgemische
WO1995029218A1 (en) * 1994-04-25 1995-11-02 The Procter & Gamble Company Stable, aqueous laundry detergent composition having improved softening properties
WO1996021715A1 (en) * 1995-01-12 1996-07-18 The Procter & Gamble Company Stabilized liquid fabric softener compositions
EP0749998A1 (de) * 1995-06-21 1996-12-27 Hüls Aktiengesellschaft Schmutzlösepolymere auf Basis von Oligoestern als Bestandteil von Formulierungen zur Ablösung von Öl- und Fettschmutz
WO1997012019A1 (en) * 1995-09-29 1997-04-03 The Procter & Gamble Company Stable, aqueous laundry detergent composition having improved suspension properties
WO1997044419A3 (en) * 1996-05-17 1997-12-31 Procter & Gamble Detergent composition
WO1997043365A3 (en) * 1996-05-17 1998-01-08 Procter & Gamble Detergent composition
WO1998020092A3 (en) * 1996-11-01 1998-10-08 Procter & Gamble Laundry detergent compositions comprising soil release polymer
WO2002053690A3 (en) * 2001-01-05 2002-10-24 Huntsman Spec Chem Corp Advanced sulfosuccinamate surfactants
US7655609B2 (en) 2005-12-12 2010-02-02 Milliken & Company Soil release agent
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TR27570A (tr) * 1987-04-23 1995-06-13 Fmc Corp Insektisidal siklopropil-ikameli di'(aril) bilesimler.
FR2709759A1 (fr) * 1993-09-07 1995-03-17 Colgate Palmolive Co Composition détergente de blanchissage en particules et procédé l'utilisant.
US5750490A (en) * 1994-01-31 1998-05-12 Henkel Kommanditgesellschaft Auf Aktien Detergent mixtures
WO1995020640A1 (de) * 1994-01-31 1995-08-03 Henkel Kommanditgesellschaft Auf Aktien Detergensgemische
WO1995029218A1 (en) * 1994-04-25 1995-11-02 The Procter & Gamble Company Stable, aqueous laundry detergent composition having improved softening properties
WO1996021715A1 (en) * 1995-01-12 1996-07-18 The Procter & Gamble Company Stabilized liquid fabric softener compositions
EP0749998A1 (de) * 1995-06-21 1996-12-27 Hüls Aktiengesellschaft Schmutzlösepolymere auf Basis von Oligoestern als Bestandteil von Formulierungen zur Ablösung von Öl- und Fettschmutz
WO1997012019A1 (en) * 1995-09-29 1997-04-03 The Procter & Gamble Company Stable, aqueous laundry detergent composition having improved suspension properties
WO1997044419A3 (en) * 1996-05-17 1997-12-31 Procter & Gamble Detergent composition
WO1997043365A3 (en) * 1996-05-17 1998-01-08 Procter & Gamble Detergent composition
US6136769A (en) * 1996-05-17 2000-10-24 The Procter & Gamble Company Alkoxylated cationic detergency ingredients
WO1998020092A3 (en) * 1996-11-01 1998-10-08 Procter & Gamble Laundry detergent compositions comprising soil release polymer
WO2002053690A3 (en) * 2001-01-05 2002-10-24 Huntsman Spec Chem Corp Advanced sulfosuccinamate surfactants
US7655609B2 (en) 2005-12-12 2010-02-02 Milliken & Company Soil release agent
CN117363432A (zh) * 2023-11-27 2024-01-09 广州兰洁宝日用品科技有限公司 一种柔软去污型洗衣组合物及制备方法和洗衣片

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MY106361A (en) 1995-05-30
AU7633491A (en) 1991-11-14
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CA2041716A1 (en) 1991-11-09
ZA913414B (en) 1993-01-27
PT97572A (pt) 1992-01-31

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