Classifications

• • 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
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
  • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
• • 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
  • C11D1/83—Mixtures of non-ionic with anionic 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
  • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
  • C11D11/02—Preparation in the form of powder by spray drying
• • 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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/12—Water-insoluble compounds
  • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
  • C11D3/1246—Silicates, e.g. diatomaceous earth
  • C11D3/128—Aluminium silicates, e.g. zeolites
• • 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
  • C11D1/146—Sulfuric acid esters
• • 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
  • C11D1/28—Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
• • 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
  • C11D1/42—Amino alcohols or amino ethers
  • C11D1/44—Ethers of polyoxyalkylenes with amino alcohols; Condensation products of epoxyalkanes with amines
• • 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

• the invention relates to a granular detergent which, owing to a particularly selected combination of water-soluble anionic surfactants with water-insoluble nonionic surfactants, has improved cleaning properties compared to oil and fat-containing soiling.
• a gel-like agent is known with which the greasy textiles are pretreated.
• This agent contains a mixture of "oil-friendly" nonionic surfactants and anionic surfactants from the sulfate or. Sulfonate type.
• a nonionic component such. B. with 3 moles of ethylene oxide reacted lauryl alcohol-myristyl alcohol mixtures or used with 5 moles of ethylene oxide nonylphenol.
• the preferred anionic surfactant is linear alkyl benzene sulfonate.
• the application is cumbersome and time-consuming, since it requires the gel-like cleaning composition to be applied beforehand and the textiles to be left for up to 30 minutes before being placed in the washing machine. Due to their gel-like character, the detergents are usually difficult to incorporate into a conventional, all-purpose detergent.
• Solid additives can consist of 0.1 to 60% by weight of water-insoluble surfactants or mixtures of water-insoluble and water-soluble surfactants as well as 99.9 to 40% by weight of builder salts, fillers, bleaches or other detergent ingredients.
• the surfactants can be dry mixed into these materials to avoid aerosol formation (pluming) during spray drying. This way of working is said to pose no problems since the amounts of water-insoluble surfactant required are small.
• Another object was to develop a dosage form in which the detergent-enhancing additives are incorporated into the detergent without the powder properties suffering or the undesired exhaust air problems during spray drying during the preparation of the detergents.
• Component (a) consists of a mixture of selected nonionic surfactants which, owing to their comparatively low degree of ethoxylation, are insoluble or only partially soluble in water, but are nevertheless dispersible. Their HLB values are below 12, mostly between 6 and 11.5.
• the nonionic surfactant listed under (a1) is derived from primary fatty alcohols of natural or synthetic origin, which can be saturated, monounsaturated, linear or methyl-branched in the 2-position (oxo radical).
• Linear fatty alcohols are preferably assumed, i. H. Cetyl alcohol, stearyl alcohol, oleyl alcohol and mixtures thereof, e.g. B. tallow fatty alcohol.
• the average number of glycol ether groups is 4 to 6, in particular 5.
• these are mixtures which can also contain fractions with a lower and higher degree of ethoxylation. However, as stated, the statistical maximum or the average degree of ethoxylation should be 4 to 6, preferably 5.
• the HLB value of the (a1) fraction is between 7.5 and 10, preferably 8.2 to 9.3.
• the nonionic surfactant listed under (a2) is also derived from fatty alcohols or oxoalcohols with 10 to 14 carbon atoms.
• Linear alcohols with 12 to 14 carbon atoms are preferably used as starting materials, ie lauryl alcohol and myristyl alcohol and mixtures thereof.
• CI 2 -C ' 4 alcohol mixtures obtained from coconut fatty alcohols are particularly useful, the proportion of shorter-chain alcohols advantageously being less than 5% by weight.
• the average number of ethylene polyglycol ether groups is 4 to 6, in particular 5. With regard to the statistical distribution of the glycol ether groups, what has been said in section (a1) applies analogously.
• the HLB value of the (a2) fraction is between 8, 5 and 12, preferably between 9 and 11.5.
• the nonionic surfactant listed under (a3) is derived from saturated primary alkylamines having 10 to 18, preferably 12 to 18, carbon atoms, with particular preference being given to those alkylamines whose alkyl groups are more than 50%, in particular more than 65% exist with 12 to 14 carbon atoms.
• mixtures obtained from coconut alcohols are suitable, from which the fraction with 10 and fewer carbon atoms has been largely separated.
• the average number of glycol ether groups is 1 to 3, in particular 2.
• the ethoxylate mixture can contain parts with a lower and a higher degree of ethoxylation, corresponding to an inevitably established statistical distribution.
• the HLB value of the (a3) fraction is in the range from 4 to 8, preferably from 5.5 to 7.5.
• the weight ratio (a1): (a2): (a3) is 1: (2 -6): (0.8 -2.5), preferably 1: (3 -5): (1 - 2), in which preferred range there is a particularly balanced ratio with regard to the cleaning ability, in particular with respect to greasy and oily soiling.
• Component (b) consists of anionic surfactants of the suifonate type or sulfate type.
• Alkylbenzenesulfonates with linear alkyl radicals which have 10 to 13, in particular 12, C atoms are particularly useful.
• Further preferred anionic surfactants are primary alkyl sulfates, which are derived from linear alcohols with 12 to 18 carbon atoms, and alpha-sulfofatty acid alkyl esters, which are derived from saturated fatty acids with 12 to 18, in particular 14 to 18, carbon atoms and alkanols with 1 to 3 carbon atoms. Derive atoms, especially methanol.
• anionic surfactants are also suitable, in particular mixtures of alkylbenzenesulfonates and fatty alcohol sulfates in a weight ratio of 3: 1 to 1: 3 and alkylbenzenesulfonates and alpha-sulfofatty acid esters in a ratio of 3: 1 to 1: 3.
• the anionic surfactants mentioned are generally in the form of their sodium salts Commitment.
• Suitable anionic surfactants are aikansuifonate, as can be obtained by sulfochlorination or sulfoxidation from paraffin hydrocarbons having 12 to 18 or 14 to 16 carbon atoms.
• the olefin sulfonates obtainable from terminal olefins by sulfonation with sulfur trioxide and subsequent hydrolysis can also be used.
• Other known surfactants from sulfonate or. Sulphate types may be present, but their importance is less than that of the aforementioned types. Soaps of saturated or unsaturated fatty acids with 12 to 18 carbon atoms can also be used, but such additives do not significantly improve the properties of the detergent, which is why the detergents are preferably soap-free.
• the content of the anionic surfactants is lower than their nonionic surfactant content.
• the weight ratio of nonionic component (a) to anionic component (b) is preferably 4: 1 to 4: 3, in particular 3: 1 to 3: 2. In this range, the detergency is both greasy and mineral Soiling is particularly pronounced.
• the content of the agent in the aforementioned surfactants is a total of 10 to 25% by weight, preferably 12 to 20% by weight.
• Suitable framework salts which are present in proportions of 35 to 50% by weight, are synthetic sodium aluminosilicates containing bound water, preferably of the zeolite A type. It is also possible to use zeolite NaX and mixtures thereof with zeolite NaA, the proportion of zeolite NaX in such mixtures advantageously being less than 30%, in particular less than 20%, based on the proportion of zeolite.
• Suitable zeolites have no particles larger than 30 microns and consist of at least 80% particles smaller than 10 microns.
• Their calcium binding capacity which is determined according to the information in DE 24 12 837, is in the range from 100 to 200 mg CaO / g.
• a further mandatory component of component (c) consists of a homopolymeric and / or copolymeric carboxylic acid or its sodium or potassium salt, the sodium salts being preferred.
• Suitable homopolymers are polyacrylic acid, polymethacrylic acid and polymic acid.
• Suitable copolymers are those of acrylic acid or methacrylic acid with maleic acid or copolymers of acrylic acid, methacrylic acid or maleic acid with vinyl ethers, such as vinyl methyl ether or
• Vinyl ethyl ether also with vinyl esters, such as vinyl acetate or vinyl propionate, acrylamide, methacrylamide and with ethylene, propylene or styrene.
• the proportion thereof in the interest of sufficient water solubility is not more than 70 mole percent, preferably less than 60 mole percent.
• Copolymers of acrylic acid with maleic acid have proven to be particularly suitable, as are described in more detail, for example, in EP 25 551-B1 and in the journal "Tenside", 16 (1979), pages 82-89. These are copolymers which contain 40 to 90% by weight of acrylic acid or methacrylic acid and 60 to 10% by weight of maleic acid. Copolymers in which 45 to 85% by weight of acrylic acid and 55 to 15% by weight of maleic acid are present are particularly preferred.
• the molecular weight of the homo- or copolymers is generally 1,000 to 150,000, preferably 1,500 to 100,000.
• the zeolite content of the compositions is 10 to 40% by weight, preferably 12 to 20% by weight, of polymeric or copolymeric carboxylic acids or their salts 0.5 to 5, preferably 0.8 to 4% by weight and on Sodium silicate 1 to 7% by weight, preferably 2 to 6% by weight.
• Suitable skeletal salts are sodium carbonate and, in so far as there are no concerns about the use of minor amounts of phosphates, polyphosphates, in particular pentasodium tripolyphosphate. Under the conditions mentioned, its proportion can be up to 25% by weight, preferably 5 to 22% by weight. In cases where phosphates cannot be used, replacement by sodium nitrilotriacetate in proportions of, for example, 2 to 10% by weight is also possible.
• Other known water-soluble phosphate substitutes can optionally also be used, for example polyacetals of glyoxylic acid in the form of the sodium salts.
• the framework salts (c) also include the sequestering agents from the class of aminopolycarboxylic acids and polyphosphonic acids, which are usually present in comparatively small amounts and act as so-called co-builders, stabilizers, precipitation inhibitors (threshold substances).
• the aminopolycarboxylic acids include ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid and their higher homologues.
• Suitable polyphosphonic acids are 1-hydroxyethane-1,1-diphosphonic acid, aminotri- (methylenephosphonic acid), ethylenediaminteira- (methylenephosphonic acid) and their higher homologs, such as.
• the aforementioned polycarboxylic acids or polyphosphonic acids usually come in the form of the sodium or. Potassium salts for use.
• the amount used is generally 0.1 to 5% by weight, preferably 0.2 to 1% by weight.
• the other usual detergent ingredients include anti-graying substances, optical brighteners, enzymes, bleaching agents and bleach activators, foam inhibitors, colorants and fragrances, biocides, neutral salts and substances which improve the quality of the powder.
• Suitable graying inhibitors are cellulose ethers, such as carboxymethyl cellulose, methyl cellulose, hydroxyalkyl celluloses and mixed ethers, such as methyl hydroxyethyl cellulose, methyl hydroxypropyl cellulose and methyl carboxymethyl cellulose. Mixtures of various cellulose ethers, in particular mixtures of carboxymethyl cellulose and methyl cellulose, are also suitable.
• Suitable optical brighteners are alkali metal salts of 4,4-bis- (2 "-anilino-4" -morpholino-1,3,5-triazinyl-6 "-amino) -stilbene-2,2'-disulfonic acid or compounds of the same structure, which carry a diethanolamino group instead of the morpholino group.
• Brighteners of the substituted diphenylstyryl type for example the alkali metal salts of 4,4'-bis - (2-sulfostyryl) -diphenyl, 4,4'-bis- ( 4-chloro-3-sulfostyryl) diphenyls and 4- (4-chlorostyryl-4 '- (2-su! Fostyry! - diphenyis.
• Enzymes from the class of proteases, lipases and amylases or mixtures thereof are possible. Enzymes obtained from bacterial strains or fungi such as Bacillus subtilis, Bacillus licheniformis and Streptomyces griseus are particularly suitable. The enzymes can be embedded in coating substances to protect them against premature decomposition.
• the perhydrates and per-compounds commonly used in washing and bleaching agents are suitable as bleaching components.
• the perhydrates preferably include sodium perborate, which can be present as a tetrahydrate or as a monohydrate, furthermore the perhydrates of sodium carbonate (sodium percarbonate), sodium pyrophosphate (perpyrophosphate), sodium silicate (persilicate) and urea. These perhydrates are preferably used together with bleach activators.
• the bleach activators include in particular N-acyl compounds and O-acyl compounds.
• suitable N-acyl compounds are multiply acylated alkylenediamines, such as tetraacetylmethylene diamine, tetraacetylethylenediamine and their higher homologues, and acylated glycolurils, such as tetraacetylglycoluril.
• carboxylic acid anhydrides such as phthalic anhydride and esters, such as Na (iso) nonanoylphenol sulfonate
• acylated sugars such as glucose pentaacetate are suitable as 0-acyl compounds.
• Preferred bleach activators are tetraacetylethylene diamine and glucose pentaacetate.
• the bleach activators can also be coated with coating substances in order to avoid interactions with the per compounds, especially during the storage of powdery mixtures.
• Suitable foam inhibitors are organopolysiloxanes and their mixtures with microfine, optionally silanized silica, paraffins, waxes, microcrystalline waxes and their mixtures with silanized silica and saturated fatty acids with 18 to 24 carbon atoms or their alkali soaps. Mixtures of various foam inhibitors, e.g. B. from silicones and paraffins are useful.
• Neutral salts in particular sodium sulfate, and magnesium silicate acting as a stabilizer for per compounds also come into consideration as further constituents.
• Other washing aids are additives that improve the powder structure, e.g. B. alkali salts or toluene, cumene or xylene sulfonic acid.
• the components belonging to component (d) can be present in amounts which are generally customary in known detergent compositions.
• the proportion of graying inhibitors is generally 0.2 to 2% by weight, the proportion of optical brighteners 0.05 to 0.5% by weight.
• the proportion of enzymes depends primarily on their activity.
• Technical enzyme preparations which are usually mixed with stabilizers, calcium salts and blending agents and adjusted to a specific activity, are usually used in proportions of 0.1 to 2% by weight.
• the proportion of perborate is usually 5 to 25% by weight.
• the amounts of bleach activators used are also based on their effectiveness. Highly effective activators, such as tetraacetylethylenediamine, are usually used in amounts of 0.5 to 5% by weight.
• foam inhibitors the proportion of which can generally be from 0.01 to 0.5% by weight in the case of highly effective silicone defoamers, and up to 2% by weight in the case of waxy or paraffinic substances or higher molecular weight fatty acids.
• the proportion of sodium sulfate can be up to 25% by weight, in special cases even more.
• the agents according to the invention are in the form of granular powders or powder mixtures which can be suitably granulated, spray-dried, spray-mixed, homogenized or. can be obtained through a combination of these working methods. Since component (a) consists of liquid compounds which tend to stick and which, owing to their tendency to "pluming", are only suitable for spray drying to a limited extent, it is necessary for them to be adsorbed on a carrier substance.
• skeleton salts (c) in particular zeolite, phosphates, silicates, nitrilotriacetate and their mixtures, are also spray-dried mixtures of skeleton salts (c), anionic surfactants (b) and other constituents (d), provided that these are stable under the conditions of spray drying .
• Carrier substances consisting of skeletal salts can also contain neutral salts, such as sodium sulfate, graying inhibitors, Mg silicate and additional adsorbents, such as finely divided silica, finely divided aluminum oxide, smectite clays, layered silicates and bentonites.
• framework salt mixtures prepared by build-up granulation as the carrier substance for component (a).
• the granules can also be provided with adsorbing coatings which prevent them from sticking, which can be done, for example, by means of the aforementioned fine-particle adsorbents.
• Dispersion stabilizers are to be understood as meaning compounds which are used to stabilize aqueous or pasty zeolite slurries. They are generally added to these slurries during their manufacture or moist filter cake and remain in the zeolites even during further processing. For this purpose, reference is made to DE 25 27 388.
• stabilizers are neutral salts, such as sodium sulfate, nonionic surfactants from the class of ethoxylated fatty alcohols with 12 to 18 carbon atoms and 3 to 10 glycol ether groups, and polymeric and copolymeric carboxylic acids.
• the dispersion stabilizer preferably consists of the nonionic surfactant listed under (a1) or a part thereof.
• the granulate which is preferably produced by spray drying and is described in more detail in patent application P 34 44 960 (D 7180), has an average grain size of 0.2 to 1.2 mm and contains less than 2% by weight of dust-like Proportions (grain size less than 0.05 mm) and no more than 5% by weight of coarse parts (grain size more than 2 mm). Its bulk density is 400 to 700 g / l. It is characterized by a very high adsorption capacity for liquid or paste-like substances and is therefore particularly suitable as a carrier for the nonionic surfactants (component a).
• the agents according to the invention are characterized by a high washing capacity, in particular by an excellent cleaning power against stubborn greasy soiling, for example those from food and sauce residues, skin fat, lipstick and mascara.
• a high washing capacity in particular by an excellent cleaning power against stubborn greasy soiling, for example those from food and sauce residues, skin fat, lipstick and mascara.
• liquid non-ionic surfactants Despite their comparatively high content of liquid non-ionic surfactants, they are extremely pourable and free-flowing and do not tend to grease cardboard packaging. If they are made according to the preferred procedure, i. H. Adsorbing the non-ionic surfactant on the previously prepared granules of zeolite, polymeric acid and sodium silicate completely avoids the formation of aerosols in the exhaust air from the spray towers.
• the zeolite used had a particle size of 1 to 8 microns, the proportion over 8 microns being 6% by weight. There were no portions above 20 microns.
• a copolymer of acrylic acid and maleic acid (molar ratio 7: 3) with an average molecular weight of 70,000 in the form of the sodium salt was used as the polycarboxylic acid.
• EO ethylene oxide
• the surfactant mixture consisted of 4.1 parts by weight of tallow alcohol with 5 EO (remaining part of component at), 20 parts by weight of a lauryl alcohol-myristyl alcohol mixture (2: 1) with 5 EO - (component a2) and 8.3 parts by weight of cocoalkylamine + 2 EO (C 12 -C 18 mixture, average chain length C, 3 , 5 ). After cooling, a non-sticky, granular product was obtained, the flowability of which was excellent despite a total content of 34% by weight of liquid nonionic surfactant.
• the bulk density was 740 g / l.
• Granulated enzymes of granulated silicone defoamers, sodium perborate and granulated tetraacetylethylenediamine (TAED) were added to further powder components. These powdery or granular constituents are summarized under the term "partial powder III", the proportion of which is a total of 15.3 parts by weight.
• composition of the agent was (in% by weight)
• detergents were used that contained the following surfactants with an otherwise unchanged composition (see Table I):
• the qualitative and quantitative composition of coconut alkyl residues was identical to that used in the example.
• the compositions of experiments 1 and 2 correspond to the surfactant compositions of commercially available high-performance detergents.
• Trials 3 and 4 correspond to agents according to US 3 925 224.
• the results are shown in Table II.
• the grade 1 means the highest, 6 the - worst rating.
• the improved washing power of the agents according to the invention is particularly evident in the 60 ° C. washing area.

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• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
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• 1985
  • 1985-04-20 DE DE19853514364 patent/DE3514364A1/de not_active Withdrawn
• 1986
  • 1986-04-11 EP EP86105031A patent/EP0200953A3/fr not_active Withdrawn
  • 1986-04-18 US US06/853,491 patent/US4675124A/en not_active Expired - Fee Related
  • 1986-04-21 JP JP61090199A patent/JPS61247798A/ja active Pending

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