WO2019070838A1 - Compositions liquides d'assouplissant sans esterquat - Google Patents

Compositions liquides d'assouplissant sans esterquat Download PDF

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WO2019070838A1
WO2019070838A1 PCT/US2018/054141 US2018054141W WO2019070838A1 WO 2019070838 A1 WO2019070838 A1 WO 2019070838A1 US 2018054141 W US2018054141 W US 2018054141W WO 2019070838 A1 WO2019070838 A1 WO 2019070838A1
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composition
previous
fabric conditioning
poly
acid
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Inventor
Feng-Lung Gordon Hsu
Daniel L. KILLINGER
Steven M. RADARS
Jobiah J. Sabelko
Yaqiang Ming
Yunpeng Zhu
Smita Brijmohan
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Lubrizol Advanced Materials Inc
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Lubrizol Advanced Materials Inc
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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
    • 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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/02—Compositions of detergents based essentially on soap on alkali or ammonium soaps
    • 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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/225—Polymers

Definitions

  • the disclosed technology relates to esterquat free liquid fabric softener composition having good stability, dispersibility and conditioning properties.
  • the disclosed technology relates to a fatty acid soap dispersed in aqueous media in which the soap dispersion is stabilized with a cationic polymer.
  • the stabilized soap dispersions of the disclosed technology are capable of imparting softness and moisture management properties to fabrics treated with such dispersions, particularly in the rinse cycle of a laundering procedure.
  • esterquats Quaternary ammonium salts of alkanolamines esterified with an average of two fatty acid aliphatic moieties per molecule are commonly referred to as esterquats.
  • Esterquats e.g., tallowquats
  • esterquat fabric softeners are replacing the more environmentally challenging dialkyldimethyl ammonium salt fabric softeners owing to the inclusion of ester linkages into the aliphatic moieties which significantly enhances biodegradation and lower environmental exposure levels.
  • the formulation of esterquat fabric softeners in aqueous based liquid formulations have been challenging because the ester linkages contained in the compound are susceptible to hydrolysis leading to shelf-life instability.
  • US 6,949,498 concerns a laundry cleansing and conditioning composition consisting essentially of one or more cationic polymers and one or more anionic surfactants having a percent transmittance of greater than 50 percent at 570 nanometers.
  • the ratio of cationic polymer to anionic surfactant is disclosed to be less than 1 :4, and the concentration of cationic polymer is less than 5 wt.% of the composition.
  • the anionic surfactant has an HLB of greater than 4 and is present in an amount greater than 5 wt.% of the composition.
  • fatty acid soap is disclosed among the myriad of anionic surfactant components useful in the disclosed fabric softening composition, all of the examples include a detersive surfactant other than the fatty acid soap in order to achieve the stated transmittance of greater than 50 %.
  • US 7,718,596 discloses a unit dose wash cycle fabric softener composition contained within a water-soluble container wherein the fabric softener composition includes: i) one or more fatty acid esters; ii) optionally a fatty acid soap; iii) optionally a fatty acid; iv) optionally a perfume; and v) optionally a cellulose ether cationic deposition polymer.
  • US 9,441 , 188 concerns a rinse cycle fabric conditioning composition
  • a rinse cycle fabric conditioning composition comprising an emulsion of particles in an aqueous medium.
  • the particles comprise: a) a fatty acid triglyceride; and b) a water swellable cationic polymer.
  • a fatty acid soap component There is no disclosure of a fatty acid soap component.
  • US 2006/0217287 discloses a wash and/or rinse cycle fabric softener composition
  • a wash and/or rinse cycle fabric softener composition comprising: a) 0.5 to 4 wt.% of a synthetic anionic surfactant; b) a fatty acid soap, wherein the weight ratio of the synthetic anionic surfactant to the fatty acid soap is less than 1 ; and c) 0.05 to about 2 wt.% of a cationic quaternary cellulose ether polymer.
  • US 2006/0223739 concerns a wash and/or rinse cycle fabric conditioning composition
  • a wash and/or rinse cycle fabric conditioning composition comprising: a) 0.05 to 2 wt.% of a cationic quaternary cellulose ether polymer; b) a fatty acid soap, wherein the weight ratio of the soap to the cationic cellulose ether polymer is at least 2: 1 ; and c) 0.1 to 5 wt.% of an amphoteric surfactant.
  • US 2008/0076692 discloses a wash cycle fabric softening composition
  • a wash cycle fabric softening composition comprising: a) at least 1 wt.% of a detersive surfactant other than soap having a molecular weight below 1000 Daltons: b) at least 1 wt.% of a C6 to C30 soap; c) 0.005 to 5 wt.% of a polymeric nonionic surfactant having a molecular weight above 2200 Daltons; d) 0.001 to 15 wt.% of one or more cationic polymers capable of forming a complex with the soap.
  • a stable aqueous liquid fabric softener composition comprising, consisting of, or consisting essentially of:
  • a fabric softening agent selected from a soap of at least one saturated fatty acid containing 8 to 22 carbon atoms with the degree of neutralization of greater than 0.1 ;
  • Another aspect of the present technology is to provide a means for stabilizing dispersions of anionic soap-based fabric softeners.
  • the present technology provides fabric softening compositions without the disadvantages of prior fabric softening formulations, particularly the esterquat based softener products.
  • the fabric softener compositions provide excellent dispersibility and storage stability at high and low temperatures and good freeze/thaw recovery.
  • the compositions of the present technology do not suffer from the loss of softening performance and moisture wicking properties when compared to the prior esterquat based fabric softeners.
  • fatty acid salt As defined and used herein, the terms “fatty acid salt”, “fatty acid soap” and “soap” are used interchangeably.
  • stable and “stability” means that no visible phase separation is observed for a period of at least about one week of storage, or at least about 1 month of storage, or at least about 6 months of storage at ambient room temperature (20 to about 25°C).
  • the products of the disclosed technology show no visible phase separation after about at least four weeks, or at least about 6 weeks, or at least about 8 weeks of storage at 45°C.
  • the products of the disclosed technology show no phase separation after at least one freeze/thaw cycle, or after at least 2 freeze/thaw cycles, or at least 3 freeze/thaw cycles, wherein the composition of the disclosed technology is cycled between a freezing temperature, usually - 20°C, and an ambient temperature of 20-25°C.
  • cationic polymers can be incorporated into a soap-based fabric softener composition to enhance formulation dispersibility and stability, as well as the substantivity of the active soap softening agent to a laundered fabric.
  • the polyelectrolytic nature of the cationic polymer reduces the quality of solvation and induces the salting out of the fatty acid soap to form vesicles or complexes and/or interacts with the anionically charged soap molecules to form coacervates.
  • the cationic polymer's presence in the formulation also stabilizes the viscosity of the liquid composition.
  • the active fabric softening component of the present technology is selected from at least one linear or branched saturated fatty acid soap wherein the acyl moiety of the fatty acid contains 8 to 22 carbon atoms, or 10 to 20 carbon atoms, or 12 to 18 carbon atoms.
  • the at least one fatty acid soap component is selected from a compound of the formula:
  • R represents an unsaturated moiety containing 7 to 21 carbon atoms and M is a solubilizing cation.
  • R represents a mixture of moieties having carbon atom chain lengths of 7 to 21 carbon atoms.
  • R is saturated (e.g., a C7-C22 alkyl moiety).
  • Representative saturated fatty acids include but are not limited to caprylic, capric, lauric, myristic, palmitic, steric, isostearic, arachidic, behenic, and mixtures thereof.
  • the fatty acid is a mixture of fatty acids derived from the saponification of natural oils and fats.
  • natural oils include coconut, tallow, tall, palm kernel and algal oils. While mixtures of saturated and unsaturated fatty acids are obtained from the saponification of natural oils and fats, unsaturated fatty acids contained in these can be separated from the mixture by known means or treated with hydrogenation process to remove unsaturated bounds.
  • mixtures of fatty acids derived from natural fats and oils contain 5 wt.% or less, or 3 wt.% or less, or 2 wt.% or less, or even 1 wt.% or less unsaturated fatty acid content (based on the total weight of the fatty acid mixture).
  • fatty acids with low unsaturated fatty acid content are commercially available.
  • a coconut fatty acid mixture with a low unsaturated fatty acid content (1 wt.% oleic acid) is available from Emery Oleochemicals LLC under the tradename Emery ® 626 Low IV Ultra Coconut Fatty Acid.
  • M is a cation selected from sodium, potassium and ammonium or an alkanolamine selected from triethanolamine, diethanolamine and monoethanolamine and mixtures thereof.
  • the fatty acid soap is selected from the sodium and potassium salts of lauric, myristic, palmitic, stearic acids, and mixtures thereof. In one aspect, the fatty acid soap is selected from the sodium and potassium salts of coconut fatty acids containing 1 wt.% or less of unsaturated fatty acid salt content.
  • the fabric softener composition of the present technology may optionally contain an unsaturated fatty acid in combination with the saturated fatty acids mentioned above.
  • R is as defined in formula (I) above but contains at least one unsaturated carbon-carbon double bond.
  • Representative unsaturated fatty acids include but are not limited to palmitoleic acid, oleic acid, vaccenic acid, elaidic acid, gondoic acid, erucic acid, linolenic acid, a-linolenic acid, and mixtures thereof.
  • the weight ratio of saturated fatty acid soap to unsaturated fatty acid soap is 1 : 1 , or 1 :0.75, or 1 :0.5, or 1 :0.25, or 1 :0.1 , or 1 :0.05, or 1 :0.01 , or 1 :0.
  • the amount of fatty acid soap content in the fabric softener compositions of the present technology ranges from about 0.2 to 35 wt.%, or from about 0.5 to about 15 wt. %, or from about 1 to about 10 wt.%, or from about 2 to about 8 wt.%, or from about 3 to about 6 wt.%, based on the total weight of the composition.
  • the degree of neutralization (DN) of the fatty acid ranges from about 0.1 to about 1.0, or from about 0.2 to about 1 .0, or from about 0.3 to about 1 .0, or from about 0.5 to about 1 .0.
  • the degree of neutralization is stoichiometric calculated by the mole ratio of neutralizer and fatty acid. The presence of other ingredients, such as cationic polymers and other adjuvants are not considered in the calculation of the degree of neutralization.
  • the cationic polymers of the disclosed technology provide the mechanism for the anionic soap softening component to deposit onto the negatively charged fabrics, potentially imparting additional softening benefits and anti-static performance.
  • the polyelectrolytic nature of the cationic polymer component also facilitates the conversion of the soap from a solid state to a dispersed state via a salting out phenomenon and coacervation between the soap and cationic polymer to form coacervates, complexes and/or vesicles.
  • the presence of the cationic polymer creates an osmotic gradient difference which extracts water from the coacervates and vesicles.
  • the wrapping of the cationic polymer around the surface of the coacervates and vesicles stabilizes the fatty acid soap dispersed within the continuous aqueous phase of the softener composition.
  • a high level of cationic polymer increases product viscosity by associating with multiple negatively charged soap vesicles and coacervates to form a network.
  • Saturated fatty acid soaps in aqueous media are often solid even when present in amounts as low as 0.5 % (w/w).
  • by adding a cationic polymer having sufficient total ionic strength may convert a solid soap system into a liquid dispersed state.
  • composition of the present technology has the advantage of providing substantivity to the often negatively charged textile materials (e.g., cellulose).
  • a cationic polymer is defined as a polymer containing at least one monomer residue that contains a positive charge or can be made to contain a positive charge (e.g., protonated) under conditions of end- product use.
  • the cationic polymer may be selected from the group consisting of cationic or amphoteric polysaccharides, polyethyleneimine and its derivatives, a synthetic polymer made by polymerizing one or more cationic monomers selected from the group consisting of N,N- dialkylaminoalkyl acrylate, ⁇ , ⁇ -dialkylaminoalkyl methacrylate, ⁇ , ⁇ -dialkylaminoalkyl acrylamide, ⁇ , ⁇ -dialkylaminoalkylmethacrylamide, quaternized N, N dialkylaminoalkyl acrylate quaternized N,N-dialkylaminoalkyl methacrylate, quaternized N,N- dialkylaminoalkyl acrylamide, quaternized N,N-dialkylaminoalkylmethacrylamide, Methacryloamidopropyl-pentamethyl-l,3-propylene-2-ol-ammonium dichloride,
  • the cationic polymer may optionally comprise a second monomer selected from the group consisting of acrylamide, ⁇ , ⁇ -dialkyl acrylamide, methacrylamide, ⁇ , ⁇ -dialkylmethacrylamide, C1-C12 alkyl acrylate, C1 -C12 hydroxyalkyl acrylate, polyalkylene glyol acrylate, C1 -C12 alkyl methacrylate, C1-C12 hydroxyalkyl methacrylate, polyalkylene glycol methacrylate, vinyl acetate, vinyl alcohol, vinyl formamide, vinyl acetamide, vinyl alkyl ether, vinyl pyridine, vinyl pyrrolidone, vinyl imidazole, vinyl caprolactam, and derivatives, acrylic acid, methacrylic acid, maleic acid, vinyl sulfonic acid, styrene sulfonic acid, acrylamidopropylmethane sulfonic acid (AMPS ® monomer) and their salts.
  • the polymer may be a terpolymer prepared from more than two monomers.
  • the polymer may optionally be branched or cross-linked by using branching and/or crosslinking agents including, but not limited to, ethylene glycoldiacrylate divinylbenzene, and butadiene.
  • the cationic polymer may include those produced by polymerization of ethylenically unsaturated monomers using a suitable initiator or catalyst, such as those disclosed in WO 00/56849 and US 6,642,200.
  • the cationic polymer may comprise charge neutralizing anions such that the overall polymer is neutral under ambient conditions.
  • Suitable counter ions include (in addition to anionic species generated during use) chloride, bromide, sulfate, methylsulfate, sulfonate, methylsulfonate, carbonate, bicarbonate, formate, acetate, citrate, nitrate, and mixtures thereof.
  • the cationic polymer may be selected from the group consisting of poly(acrylamide-co-diallyldimethylammonium chloride), poly(acrylamide-co-methacryloyloxyethyl trimethylammonium methylsulfate) poly(acrylamide-co-methacrylamidopropyltrimethyl ammonium chloride), poly(acrylamide-co-N,N-dimethyl aminoethyl acrylate) and its quaternized derivatives, poly(acrylamide-co-N,N-dimethyl aminoethyl methacrylate) and its quaternized derivative, poly(hydroxyethylacrylate-co-dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co-dimethyl aminoethyl methacrylate), poly(hydroxpropylacrylate-co-methacrylamidopropyltrimethylammonium
  • INCI International Nomenclature of Cosmetic Ingredients
  • Polyquaternium-1 Polyquaternium-5, Polyquaternium-6, Polyquaternium-7, Polyquaternium-8, Polyquaternium-1 1 , Polyquaternium-14, Polyquaternium-22, Polyquaternium-28, Polyquaternium-30, Polyquaternium-32, Polyquaternium-33, Polyquaternium-39, Polyquaternium-47 and Polyquaternium-53.
  • the cationic polymer may include natural polysaccharides that have been cationically and/or amphoterically modified.
  • Representative cationically or amphoterically modified polysaccharides include those selected from the group consisting of cationic and amphoteric cellulose ethers; cationic or amphoteric galactomannans, such as cationic guar gum, cationic locust bean gum and cationic cassia gum; chitosan; cationic and amphoteric starch; and combinations thereof.
  • polymers may be further classified by their INCI names as Polyquarternium-10, Polyquaternium-24, Polyquaternium-29, Guar Hydroxypropyltrimonium Chloride, Cassia Hydroxypropyltrimonium Chloride and Starch Hydroxypropyltrimonium Chloride.
  • the cationic polymer may have a cationic charge density of from about 0.005 to about 23, or from about 0.01 to about 12, or from about 0.1 to about 7 milliequivalents/g, at the pH of the intended use of the composition.
  • charge density is measured at the intended use pH of the product. Such pH will generally range from about 2 to about 1 1 , more generally from about 2.5 to about 9.5. Charge density is calculated by dividing the number of net charges per repeating unit by the molecular weight of the repeating unit.
  • the cationic polymer may have a weight average molecular weight (Mw) of from about 500 to about 5,000,000, or from about 50,000 to about 2,000,000, or from about 100,000 to about 1 ,600,000, or from about 200,000 to about 1 ,200,000 Daltons as determined by size exclusion chromatography relative to polyethyleneoxide standards with Rl detection.
  • the cationic polymers may also range in both molecular weight and charge density.
  • the cationic polymer may have a charge density of from about 0.05 meq/g to about 12 meq/g, or from about 0.3 to about 6 meq/q, or from about 0.5 to about 4 meq/g at a pH of from about pH 3 to about pH 12.
  • the one or more cationic polymer may have a weight average molecular weight of 75,000 Daltons to about 2,500,000 Daltons and a charge density from about 0.1 meq/g to about 12.
  • Examples of commercially available cationic polymers useful in the present technology are marketed under the NoveriteTM tradename by Lubrizol Advanced Materials, Inc., Cleveland, Ohio, product designations 300, 301 , 302, 303, 304, 305, 306, 307, 308, 310, 31 1 , 312, 313, 314 and 315, as well as under the SensomerTM tradename, product designations CI-50 and 10M.
  • a suitable softener composition can be characterized by its liquid index (LI).
  • Softener compositions having a LI of greater than about 1 .25 cannot readily break the solid soap structure.
  • the LI of the fabric softener compositions of the disclosed technology range from about 0.001 to about 1 .25, or from about 0.005 to about 1 , or from about 0.01 to about 0.75, or from about 0.05 to about 0.6, or from about 0.1 to about 0.5.
  • the LI of the softener composition can be calculated by the following equation: where:
  • EQsoap is the total charge of the soap (meq);
  • EQaii polymers is the total charge (both anionic and cationic charges but not including ion pair charges) of the cationic polymer (meq); Nc is the carbon chain length of fatty acid;
  • DN is the degree of neutralization of fatty the acid with 1 .
  • a system with 100% stoichiometric neutralization is assigned 1 ;
  • EQ SO a P may be calculated from the equation: where:
  • MFA is the mass of fatty acid
  • MWFA is the molecular weight of fatty acid
  • EQaii polymers may be calculated from the equation: m
  • EQj is the sum of positive and negative ionic charges of polymer j (meq) (but does not include the charges from ion pairs);
  • n the number of polymers.
  • the presence of cosolvents, hydrotropes, or dispersants in a formulation would relax the constraint of LI to greater than 1 .25.
  • the cationic polymer component may be present in an amount ranging from about 0.1 to about 50 wt.%, or from about 0.5 to about 20 wt.%, or from about 0.75 to about 15 wt.%, or from about 1 to about 10 wt.%, or from about 1 .5 to about 8 wt.% or from about 2 to about 5 wt.%, based on the weight of the total composition.
  • the fabric softener compositions of the present technology are provided as aqueous dispersions in which most of the fabric softening fatty acid salt compounds are stably dispersed in the aqueous phase.
  • the aqueous phase is primarily water, usually deionized, distilled or tap water (nominal hardness), with partially dissolved fatty acid soap, polymers and adjuvants.
  • the compositions comprise from about 25 to about 99 wt.%, or from about 30 to about 90 wt.%, or from about 35 to about 80 wt.%, or about 40 to about 75 wt.%, or from about 60 to about 96 wt.%, or from about 75 to about 93 wt.%, or from about 80 to about 90 wt.% water, based on the total weight of the composition.
  • the water component is demineralized.
  • the aqueous carrier may comprise water miscible cosolvents.
  • Cosolvents can aid in the dissolution of various fabric softener components including the soap component and adjuvants that require dissolution in the liquid phase. Manipulation of the level of soap dissolution could be used for adjusting product viscosity by altering the volume ratio of soap aggregates and continuous bulk liquid as well as the viscosity of bulk liquid.
  • Suitable cosolvents include the lower alcohols such as ethanol and isopropanol but can be any lower monohydric alcohol containing up to 5 carbon atoms.
  • Some or all of the alcohol may be replaced with dihydric or trihydric lower alcohols or glycol ethers which in addition to providing solubilizing properties and reducing the flash point of the product, also can provide anti-freezing attributes as well as to improve the compatibility of the solvent system with particular laundry detergent adjuvants.
  • Exemplary dihydric and trihydric lower alcohols and glycol ethers are glycol, propanediol (e.g., propylene glycol, 1 ,3-propane diol), butanediol, glycerol, diethylene glycol, propyl or butyl diglycol, hexylene glycol, ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol propyl ether, ethylene glycol mono-n-butyl ether, diethylene glycol methyl ether, diethylene glycol ethyl ether, propylene glycol methyl, ethyl or propyl ether, dipropylene glycol monomethyl ether monoethyl ether, diisopropylene glycol monomethyl ether, diisopropylene glycol monoethyl ether, methoxytriglycol, ethoxytriglycol, butoxytriglycol, isobutoxyethoxy-2
  • the amount of cosolvent(s) if utilized can range from about 0.1 to about 10 wt.%, or from about from about 0.5 to about 5 wt.%, or from about 1 to 3.5 wt.%, based on the weight of the total composition.
  • the softener compositions may contain an optional auxiliary dispersing agent to facilitate the processing of compositions containing higher levels of the soap softening agent.
  • the auxiliary dispersing agent can be selected from polyetheramines (e.g., Jeffamine ® monoamines, Huntsman Corporation), fatty amine ethoxylates, polyoxyalkylene sodium salts (Carbosperse ® K-XP228 dispersant, Lubrizol Advanced Materials, Inc.), aromatic poly(alkyleneoxide) (e.g., Solsperse ® 27000 dispersant, Lubrizol Advanced Materials, Inc.) and anionically modified polyalkoxylated polyurethanes (SolsperseTM VW 400 dispersant, Lubrizol Advanced Materials, Inc.).
  • Other dispersing agents suitable for dispersing soaps may also be utilized.
  • the auxiliary dispersing agent is a polyetheramine is represented by the formula:
  • R 1 is hydrogen or methyl; and x and y are integers from 0 to 100, or from 1 to 50, or from 10 to 25, subject to the proviso that x and y cannot both be zero at the same time.
  • x and y are taken such that the molecular weight of the dispersant ranges from about 200 to about 5000, or from about 400 to about 4000, or from about 800 to about 2500 Daltons. These materials are commercially available from Huntsman Corporation, under the tradename Jeffamine ® , product designations M-600, M-1000, M-2005 and M-2070.
  • the dispersing agent is a fatty amine ethoxylate.
  • the fatty amine ethoxylate is represented by the formula:
  • R 2 is selected from hydrogen, C1-C22 alkyl, hydroxy(Ci-C22) alkyl or poly(ethyleneoxide) containing 2 to 30 ethylene oxide units, optionally R 2 can contain an ether linkage; and n and m independently represent an integer from 1 to 29.
  • the fatty amine ethoxylate is selected from but not limited to bis-(2-hydroxyethyl) isodecyloxypropylamine, poly(oxyethylene)(5) isodecyloxypropylam ine, bis-(2-hydroxyethyl) isotridecyloxypropylam ine, poly(oxyethylene)(5) isotridecyloxypropyl amine, bis-(2-hydroxyethyl) dodecylamine, poly(oxyethylene)(5) dodecylamine, poly(oxyethylene)(10) dodecylamine, poly(oxyethylene)(15) dodecylamine, bis-(2-hydroxyethyl) soya amine, poly(oxyethylene)(5) soya amine, poly(oxyethylene)(15) soya amine, bis- (2-hydroxyethyl) octadecylamine, poly(oxyethylene)(5) octadecylamine, poly(oxyethylene)(5) octa
  • the amine head portion of the fatty amines associate with the fatty acid within the soap coacervate, complex and/or vesiscle while the ethoxylated portion of the fatty amine ethoxylate extends sufficiently away from the soap vesicle or coacervate to form a steric repulsive barrier preventing the aggregation or cohesion of individual soap coacervates, complexes and/or vesicles to assist in the stabilization of the dispersion.
  • the auxiliary dispersant component may be present in an amount ranging from about 0 to about 10 wt.%, or about 0.05 to about 7 wt.%, or from about 0.1 to about 5 wt.%, or from about 0.25 to about 3 wt.% or from about 0.5 to about 2.5 wt.%, based on the weight of the total composition.
  • the softener compositions may contain an optional hydrotrope.
  • the hydrotrope can be selected from those materials recognized in the art as hydrotropes.
  • nonionic hydrotropes such as glycerin, propylene glycol, ethanol and urea can be employed.
  • Non-limiting examples of suitable hydrotropes include: sodium cumene sulfonate, sodium toluene sulfonate, sodium xylene sulfonate, and sodium diisopropyl naphthalene sulfonate.
  • the amount of hydrotrope can range from about 0 to about 10 wt.%, or from about 0.1 to about 5 wt.%, or from about 0.2 to about 4 wt.%, or from about 0.5 to about 3 wt.%, based on the weight of the total composition.
  • the softener compositions may contain an optional electrolyte.
  • the electrolyte is included in the composition to modify the viscosity/elasticity profile of the composition on dilution and to provide lower dispersion viscosity and/or elasticity to the composition itself.
  • any of the alkaline metals or alkaline earth metal salts of the mineral acids can be used as the electrolyte.
  • solubility and low toxicity NaCI, KCI, CaC , MgC and MgS04 and similar salts of alkaline and alkaline earth metals are employed. Due to the presence of fatty acid soap, mono valent salts are preferred for this application.
  • the amount of the electrolyte salt can range from about 0 to 3 wt.%, or from about 0.05 to about 2.5 wt.%, or from about 0.1 to about 2 wt.% or from about 0.25 to 1 .5 wt.%, based on the total weight of the composition.
  • the softener compositions of the disclosed technology may contain an optional thickening agent to help increase the viscosity of the softener compositions.
  • an optional thickening agent to help increase the viscosity of the softener compositions.
  • Various categories of thickeners may be used for increasing the viscosities of fabric softening compositions containing cationic components.
  • thickeners of natural origin for example, gelatins, starches and carrageenans
  • cellulose-based natural thickeners known as cellulose ethers for example, ethylhexylethylcellulose (EHEC), hydroxybutylmethylcellulose (HBMC), hydroxyethylmethylcellulose (HEMC), hydroxypropylmethylcellulose (HPMC), methyl cellulose (MC), hydroxyethylcellulose (HEC), hydroxypropylcellulose (HPC) and cetyl hydroxyethylcellulose.
  • EHEC ethylhexylethylcellulose
  • HBMC hydroxybutylmethylcellulose
  • HEMC hydroxyethylmethylcellulose
  • HPMC hydroxypropylmethylcellulose
  • MC methyl cellulose
  • HPC hydroxyethylcellulose
  • cetyl hydroxyethylcellulose cetyl hydroxyethylcellulose
  • HEUR hydrophobically modified ethoxylated urethanes
  • the thickener may be selected from crosslinked homopolymers of acrylic acid (INCI name: Carbomer), crosslinked copolymers of (meth)acrylic acid and a C10-C30 alkyl ester of (meth)acrylic acid (INCI name: Acrylates/C 10-30 Alkyl Acrylate Cross-polymer), an alkali-swellable emulsion (ASE) polymer or a hydrophobically modified alkali-swellable emulsion (HASE) polymer.
  • crosslinked homopolymers of acrylic acid INCI name: Carbomer
  • crosslinked copolymers of (meth)acrylic acid and a C10-C30 alkyl ester of (meth)acrylic acid INCI name: Acrylates/C 10-30 Alkyl Acrylate Cross-polymer
  • ASE alkali-swellable emulsion
  • HASE hydrophobically modified alkali-swellable emulsion
  • An ASE polymer is a crosslinked emulsion copolymer prepared from (meth)acrylic acid and at least one monomer of a C1-C5 alkyl (meth)acrylate (INCI name: Acrylates Copolymer).
  • a HASE polymer is an emulsion copolymer of (meth)acrylic acid, at least one C1 -C5 alkyl (meth)acrylate and an associative monomer with a pendant poly(alkylenoxy) moiety having a hydrophobic end group, e.g., alkyl, aryl or arylalkyl groups (representative INCI name: Acrylates/Beheneth-25 Methacrylate Copolymer).
  • the amount of the thickener component can range from about 0 to 10 wt.%, or from about 0.001 to 5 wt.%, or from about 0.1 to 2.5 wt.%, or from about 0.25 to 1 wt.%, based on the total weight of the composition.
  • Chelation agents can be employed to stabilize the softener compositions against the deleterious effects of metal ions.
  • suitable chelating agents include amino carboxylates, ethylene diamine- ⁇ , ⁇ '-disuccinate, amino phosphonates (where low levels of phosphorus are permitted), citric acid and salts thereof, and cyclodextrins.
  • Amino carboxylates useful as chelating agents include ethylenediaminetetraacetates (EDTA), N- hydroxyethylethylenediaminetriacetates, nitrilotriacetates (NTA), ethylenediamine tetraproprionates, ethylenediamine-N,N'-diglutamates, 2- hyroxypropylenediamine-N,N-disuccinates, triethylenetetraamine- hexacetates, diethylenetnaminepentaacetates (DETPA), and ethanoldiglycines, including their water-soluble salts such as the alkali metal, ammonium, and substituted ammonium salts thereof and mixtures thereof.
  • EDTA ethylenediaminetetraacetates
  • NDA hydroxyethylethylenediaminetriacetates
  • NTA nitrilotriacetates
  • ethylenediamine tetraproprionates ethylenediamine-N,N'
  • Suitable amino phosphonates are also suitable for use as chelating agents in the compositions of the invention when at least low levels of total phosphorus are permitted in laundry compositions, and include ethylenediaminetetrakis(methylenephosphonates), diethylenetriamine-N,N,N',N",N"-pentakis(methanephosphonate) (DETMP) and I- hydroxyethane-1 , 1 -diphosphonate (HEDP).
  • the chelating agents are used in an amount ranging from about 0 to about 10 wt.%, or from about 0.25 to about 5 wt.%, or from about 0.5 to about 3 wt.%, based on the total weight of the composition.
  • the softener compositions of the disclosed technology may contain an optional preservative(s).
  • Suitable preservatives include polymethoxy bicyclic oxazolidine, methyl paraben, ethyl paraben, propyl paraben, butyl paraben, benzyltriazole, DMDM hydantoin (also known as 1 ,3-dimethyl-5,5-dimethyl hydantoin), imidazolidinyl urea, phenoxyethanol, phenoxyethylparaben, methylisothiazolinone, methylchloroisothiazolinone, benzoisothiazolinone, triclosan, and suitable polyquaternium compounds disclosed above (e.g., Polyquaternium-1 ); and mixtures therof.
  • the preservatives comprise from about 0 to about
  • the softener compositions of the disclosed technology may contain optional pH adjusting agent(s).
  • the liquid fabric softener of the present technology will have a neat pH of from about 4 to about 13, or from about 5 to about 10, or from about 6 to about 9.5, or from about 6.5 to about 8.5.
  • the liquid fabric softener composition may contain a pH adjusting agent and/or buffering agent in a sufficient amount to attain the above-mentioned pH ranges.
  • the pH adjusting agents useful in the present laundry compositions include alkalizing agents.
  • Suitable alkalizing agents include, for example, ammonia solution, triethanolamine, diethanolamine, monoethanolamine, potassium hydroxide, sodium hydroxide, sodium phosphate dibasic, soluble carbonate salts, and combinations thereof. If it is necessary to reduce the pH of the liquid composition, inorganic and organic acidifying agents may be included. Suitable inorganic and organic acidifying agents include, for example, HCI, HBr, HI, boric acid, sulfuric acid, phosphoric acid, and/or sulphonic acid; or boric acid.
  • the organic acidifying agent can include substituted and substituted, branched, linear and/or cyclic carboxylic acids and anhydrides thereof (e.g., citric acid, lactic acid).
  • the softener compositions of the disclosed technology may contain an optional buffer agent(s).
  • Suitable buffering agents include, but are not limited to, alkali or alkali earth metal carbonates, phosphates (where small amounts of phosphorus are permitted), bicarbonates, citrates, borates, acetates, silicates, acid anhydrides, succinates, and the like, such as sodium phosphate, sodium citrate, sodium acetate, sodium bicarbonate, sodium silicate and sodium carbonate.
  • the softener compositions of the disclosed technology may contain one or more enduring perfume ingredients which are substantive to fabrics to minimize the perfume lost during the laundry rinse cycle.
  • the perfume may be in the form of free oil or encapsulates.
  • Substantive perfume ingredients are those fragrance compounds that effectively deposit on fabrics during the rinsing cycle and are detectable on the subsequently dried fabrics by individuals with normal olfactory acuity. Enduring perfumes are those which are effectively retained and remain on the laundry for a long-lasting aesthetic benefit with a minimum amount of material, and not lost and/or wasted in the rinsing, and/or drying steps of the laundering process.
  • the perfume can be derived from a naturally occurring molecule or a synthetic molecule.
  • Naturally occurring molecules are those that are derived directly or indirectly from living beings (e.g., animals, plants, fruit, flowers, and the like).
  • Naturally occurring molecules include products of naturally occurring molecules and synthetic molecules.
  • Synthetic perfumes include alcohols, ketones, aldehydes, esters, ethers, nitriles, alkenes, and mixtures thereof. Suitable perfumes and fragrances are disclosed in U.S. Patent Nos. 8, 188,030; 8,357,649 and 8,293,697, the pertinent disclosures of which are incorporated herein by reference.
  • the perfume is incorporated into the present softener compositions at a level from about 0 or 0.001 to about 5 wt.%, or from about 0.1 to 3 wt.%, or from about 0.5 to about 2 wt.%, based on the total weight of the composition.
  • adjunct ingredients that may be added to the fabric softener composition of the present technology include, but are not limited to, colorant, brightener, dye, odor control agent, pro-perfume, cyclodextrin, solvent, soil release polymer, antimicrobial agent, chlorine scavenger, enzyme, anti- shrinkage agent, fabric crisping agent, spotting agent, anti-oxidant, anti-corrosion agent, bodying agent, drape and form control agent, smoothness agent, wrinkle control agent, sanitization agent, disinfecting agent, germ control agent, mold control agent, mildew control agent, antiviral agent, anti-microbial, drying agent, stain resistance agent, soil release agent, malodor control agent, fabric refreshing agent, chlorine bleach odor control agent, dye fixative, dye transfer inhibitor, color maintenance agent, color restoration/rejuvenation agent, anti- fading agent, whiteness enhancer, anti-abrasion agent, wear resistance agent, fabric integrity agent, anti-wear agent, and rinse aid, UV protection agent, sun fade inhibitor, insect repell, odor control
  • the softener composition comprises one or more adjunct ingredient(s) up to about 5 wt.%, based on the total weight of the composition.
  • the composition of the present technology is free or essentially free of any one or more adjunct ingredients.
  • the composition is free or essentially free of detersive laundry surfactants (other than the fatty acid soap).
  • the fabric softener compositions of the present technology may be prepared by the procedure set forth below:
  • the cationic polymers and liquid thickener may be pre-diluted with at least the same amount of water as a premix before adding to the system.
  • Brookfield viscometers were used to measure the viscosity of compositions prepared in the examples. Either Model RV or LV Brookfield viscometer (Ametek Brookfield) was used depending on the viscosity range. The measurements were carried out at ambient room temperature (20-25°C) at the rotation speed of 20 rpm. Spindle sizes are selected in accordance with the standard operating recommendations from the manufacturer. The artisan of ordinary skill in the art will select a spindle size appropriate for the system to be measured.
  • a top load washer (General Electric Model No.
  • GTWN2800D1VWV was used for testing. Before each test cycle, the washer was cleaned as follows:
  • New terry cloth towels (Baltic Linen Pyramid Excel) used for the softness index test were washed (3 wash cycles) using Tide Original Powder laundry detergent to strip the manufacturing finish from the towels. After the third wash cycle the towels were removed from the washer and tumble dried. Before tumble drying the surface of the dryer was sprayed with isopropyl alcohol and wiped with a clean towel to insure chemical residues were removed. A front load tumble dryer (Whirlpool Quiet Dry LEB6300PWO was used for all drying steps.
  • a PhabrometerTM 3 fabric assessment instrument and associated software (PhES) (Nu Cybertek, Inc.) was interfaced with a personal computer and used to measure the resilience and softness parameters of the softener treated towels. Individual circular swatches (area: approximately 100 cm 2 ) were cut from each of the 3 treated towels in each fabric softener test run. Each softener treated swatch sample was individually placed onto the mounting platform over the orifice (1 1 cm diameter) of the instrument and weighted down with 4 mass plates weighing a total of 1 .814 kg. The treated swatch was forced through the orifice by the instrument plunger.
  • SI Softening Index
  • the softeners of the disclosed technology were compared to the softening performance of two controls, a blank formulation (no softener) and a leading commercial softener product containing an esterquat as the fabric softening component (Ultra DownyTM fabric softener).
  • the softening results were calculated according two equations below:
  • Free/Thaw stability testing was carried out by storing samples in a freezer at (-20°C) for at least 12 hours followed by thawing at ambient room temperature (20 - 25°C) for at least 3 hours before visual examination for gel formation or phase separation. The sample passes if there is no gel formation, phase separation, and viscosity changes. The test is repeated for up to 5 cycles.
  • a top load washer (General Electric Model No.
  • GTW330ASK0VWV was used for testing. Before each test cycle, the washer was cleaned as follows:
  • a mixed (cotton, synthetic) load of fabrics was utilized. Each load consisted of 2 new terry cloth cotton hand towels (Pyramid Excel), 2 new cotton kitchen hand towels (MainstaysTM), 2 new cotton t-shirts (Gildan), 2 new polyester t-shirts (Under ArmourTM HeatGear), 2 new polyester/elastane compression long sleeve shirts (Under ArmourTM HeatGear), and 2 new polyblend pillow cases (MainstaysTM). Items used for the wicking index test were first washed (3 wash cycles) using Tide Original Powder laundry detergent to help strip the manufacturing finishes. After the third wash cycle items were removed from the washer and tumble dried.
  • a front load tumble dryer (Whirlpool Quiet Dry LEB6300PWO) was used for all drying steps. The dryer was set on low setting with no wrinkle guard.
  • the washing machine parameters were set to Medium Cycle, Regular Size Load, Deep Rinse, and Cool Water Temperature. City tap water having a ⁇ 140-ppm water hardness level was used for all of the tests.
  • the mixed load detailed above was placed in the washer along with TideTM Original liquid laundry detergent dosed at 45 grams/wash and the wash cycle was started.
  • residual detergent in the dosing cup was rinsed into the washer drum by holding the dosing cup under the fill water dispenser.
  • the liquid softener test formulations or control formulation (Ultra DownyTM fabric softener) were dosed into the washer drum at the beginning of the rinse cycle at a dose of 3.9 grams total solids.
  • any residual softener in the dosing cup was rinsed into the washer by holding the dosing cup under the fill water dispenser. After the spin cycle was completed the load was placed in the front load tumble dryer drum which was pre-cleaned with isopropyl alcohol. The dryer was set on low setting with no wrinkle guard. Ten wash/dry treatment cycles were completed.
  • HWI Asample/Ablank
  • HWI the horizontal wicking index of the sample
  • Asampie the area of the water spot for the sample tested
  • Abiank the area of the water spot for the blank (detergent only, no softener treatment).
  • VWI Hsample/H blank where VWI is the vertical wicking index of the sample, Hsampie is the wicking height of the water for the sample tested, and Hbiank is the wicking height of the water for the blank (detergent only, no softener treatment).
  • textile substrates treated with the fabric softening compositions of the present technology provide VWI of at least 0.25, or at least 0.5, or at least 0.6, or at least 0.75.
  • textile substrates treated with the fabric softening compositions of the present technology provide HWI of at least 0.25, or at least 0.5, or at least 0.6, or at least 0.75.
  • Examples 1 to 4 are comparative.
  • Aqueous soap compositions were prepared by combining the ingredients in the amounts indicated in Table 1 .
  • Dl deionized
  • a sodium hydroxide solution was added to a mixing vessel equipped with a stirrer.
  • a sodium hydroxide solution was added to the aqueous solution of sodium hydroxide and water.
  • the fatty acid was neutralized in situ to form a fatty acid soap.
  • the cationic polymer was then added to the soap composition and mixed until homogeneous.
  • Comparative Examples 1 to 3 (without a cationic polymer component forms a solid or a two-phase gel/liquid even when the fatty acid soap concentration is as low as 0.5 wt.%.
  • Comparative Example 4 (Formulation 22 of U.S. 6,949,498) which was formulated to favor the lowest concentration of fatty acid soap and the highest concentration of cationic was a solid (LI of 4.16). Examples 5 to 9
  • Examples 5 and 6 are comparative and Examples 7 to 9 are exemplary of the present technology. Examples 5 to 9 were formulated from the ingredients listed in Table 2 using the same procedure set forth in Examples 1 to
  • Emery ® 626 Low IV Ultra coconut fatty acid (Emery Oleochemicals LLC)
  • Example 10 is comparative, and Examples 1 1 to 19 are exemplary of the present technology. Examples 10 to 19 are formulated from the ingredients listed in Tables 3 and 3A using the same procedure set forth in Examples 1 to 4.
  • Emery ® 626 Low IV Ultra coconut fatty acid (Emery Oleochemicals LLC)
  • Emery® 626 Low IV Ultra coconut fatty acid (Emery Oleochemicals LLC)
  • Comparative Example 10 was solid as predicted from the LI value (LI is greater than 1 .25) and could not be used for a liquid softening product.
  • the formulations of Examples 1 1 to 19 have a LI value of less than 1 .25 and are liquids.
  • Examples 20 to 24 [0094] Examples 20 to 23 are of the present technology and Example 24 is comparative. The Examples were formulated from the ingredients listed in Table 4 using the procedure of Examples 1 to 4.
  • the formulations of Examples 20 to 23 have a LI value of less than 1 and are liquids.
  • the formulation of Comparative Example 24 was solid as predicted from the LI value (LI is greater than 1 ) and could not be used for a liquid softening product.
  • compositions contained a 10 wt.% fatty acid soap level. All formulations had a LI of 1 or less and were liquids. -33-
  • Emery ® 626 Low IV Ultra coconut fatty acid (Emery Oleochemicals LLC)
  • compositions of Examples 30 to 35 were formulation from the ingredients set forth in Table 6 utilizing the procedure set forth in Examples 1 to 4.
  • the compositions of Examples 30, 32, 33, and 35 were formulated with a monoamine dispersant. All the compositions had a LI of 1 or less and were liquids. All the compositions passed three freeze/thaw cycles.
  • Example 36 was formulated from the ingredients set forth in Table 7 utilizing the procedure set forth in Examples 1 to 4.
  • Example 36 is formulated from a 1 : 1 ratio of saturated to unsaturated fatty acid.
  • Example 37 was formulated from the ingredients set forth in Table 8 utilizing the procedure set forth in Examples 1 to 4.
  • Emery® 626 Low IV Ultra coconut fatty acid (Emery Oleochemicals LLC)
  • compositions of Examples 38 to 42 were formulated from the ingredients set forth in Table 10 utilizing the procedure set forth in Examples 1 to 4, except that the fatty acid utilized in the soap component was pre-neutralized before formulating with the other ingredients in the fabric softener composition.
  • the formulations were subjected to freeze-thaw stability testing as described in the Freeze/Thaw Cycle Test protocol above.
  • ActicideTM MBS Preservative 2 0.10 0.10 0.10 0.10 0.10 0.10 0.10

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Abstract

L'invention concerne des compositions liquides d'assouplissant contenant des savons d'acides gras saturés stabilisés par des polymères cationiques. Les savons d'acides gras sont dispersés de manière stable dans des milieux aqueux et sont résistants à de multiples cycles de congélation/décongélation. Les dispersions de savon stabilisées selon l'invention permettent de conférer des propriétés de souplesse et de gestion de l'humidité telles qu'un effet amélioré d'évacuation de l'humidité par capillarité à des tissus traités avec de telles dispersions d'assouplissant.
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CN111394194A (zh) * 2020-03-17 2020-07-10 纳爱斯浙江科技有限公司 一种高脂肪酸含量的近中性液体洗涤剂及其制备方法
WO2021059236A3 (fr) * 2019-09-27 2021-05-06 Church & Dwight Co., Inc. Composition assouplissante liquide pour tissus
WO2021121704A1 (fr) 2019-12-17 2021-06-24 Henkel Ag & Co. Kgaa Composition de traitement textile
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EP4170006A1 (fr) * 2021-10-19 2023-04-26 Henkel AG & Co. KGaA Préparation coulante et concentrée de détergent présentant des propriétés améliorées
WO2023166043A1 (fr) * 2022-03-01 2023-09-07 Kao Corporation S.A. Formulations adoucissantes pour maintenir ou améliorer l'évacuation de l'humidité
US12215302B1 (en) 2024-06-28 2025-02-04 Bala Nathan Smectite clay-based fabric softener compositions with etheramine stabilizers

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US12215302B1 (en) 2024-06-28 2025-02-04 Bala Nathan Smectite clay-based fabric softener compositions with etheramine stabilizers

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