FI83971C - COMPOSITORS OF UPHOLSTERY MEDICINES OR TVAETMEDEL FOR THE PURPOSE OF A TVAETTCYKLAR MED HETT VATTEN. - Google Patents

Description

1 83971

This invention relates to a composition for cleaning and softening textiles in a laundry wash cycle. More specifically, the present invention relates to softening compositions suitable for use in a laundry wash cycle, especially when hot water is used, and the composition comprises a water-insoluble cationic quaternary ammonium compound as a plasticizer and a nonionic surface tension lowering agent having a cloud point active substance to raise the cloud point of the mixture above the washing temperature.

Mixtures that can be used to treat textiles to improve their softness and "feel" properties are known in the art.

When fabric softeners are used in household laundry, they are typically added to the rinse water during a rinse cycle lasting only about 2-5 minutes. The user must therefore either monitor the laundry program or take other precautions so that the fabric softener is added at the right time. This requires the consumer to return to the washing machine just before or at the beginning of the rinsing cycle of the washing operation, which is obviously burdensome for the consumer. In addition, special care must be taken to use an appropriate amount of textile softener and to avoid overdosing, which may make clothing water-repellent when a greasy film precipitates on the surface of the fabric, as well as making the fabrics somewhat yellow.

To solve the above problems, it has been known to use fabric softeners that are compatible with conventional laundry detergents so that the fabric softeners can be combined with the detergents in the same package for use during the wash cycle of the washing operation.

2,83971

Examples of such textile softener blends added to a wash cycle are disclosed in U.S. Patents 3,351,438, 3,660,286 and 3,703,480. with.

But it is also known that the cationic softeners added to the wash cycle, either as a component of the detergent-fabric softener mixture or as a fabric softener in the wash cycle, interfere with the clarifying performance of the detergent as well as the cleaning performance. As a result, attempts have been made to compensate to some extent for this interfering effect of detergent-softener compositions by using nonionic surfactants, higher amounts of brighteners, carboxymethylcellulose, anti-yellowing agents, sealants, etc. However, little improvement has been achieved various detergents, most of which are anionic.

But several detergent compositions known in the art have also been reported which contain cationic plasticizers, such as quaternary ammonium compounds as plasticizers and nonionic surfactants.

Representative of this technique include U.S. Patents 4,264,457, 4,239,659, 4,259,217, 4,222,905, 3,951,879, 3,360,470, 3,351,483, 3,644,203, etc. In addition, U.S. Patents 3,537,993, 3 583 912, 3 983 079, 4 203 872 and 4 264 479 disclose in particular combinations of a nonionic surfactant, a cationic textile softener and another ionic surfactant or modifier such as two zwitterionic, amphoteric surfactants. active substance and the like.

3,83971

Although many of these prior art recipes provide a satisfactory washing and / or softening effect under a wide variety of conditions, they still suffer from a lack of sufficient softening effect, for example compared to softeners added to the rinsing cycle, especially under hot water washing conditions, i. At temperatures of 60 ° C and above; they also form complexes with the cationic compound; less emollient, water-soluble compounds, for example mono-higher alkyl-quaternary-ammonium cationic compounds, must be used; must be limited to liquid mixtures, etc.

Today, it is no longer uncommon with current laundry detergent compositions and conventional automatic home washing machines, especially in the United States, to wash / clean dirty textiles using cold or warm wash water, especially in the case of delicate fabrics, e.g. wash-and-use textiles, permanently pressed fabrics, etc. but nevertheless it is considered that more efficient cleaning (removal of dirt stains) requires higher washing temperatures. In addition, in Europe and other countries, home washing machines operate at temperatures of 60 ° C or higher, even at the boiling point of washing water. Although these temperatures are advantageous: for removing stains, they are also not advantageous for the softening effect.

The present invention is based on the finding that the softening effect is greatly improved in a detergent mixture based on a mixture of a nonionic detergent compound and a cationic quaternary ammonium compound acting as a softener when using a limited class of nonionic compounds known below the wash temperature. points up. In addition, this improvement in the softening effect is achieved without any, or at least without any significant deterioration in the washing (i.e. cleaning) performance.

4,83971

It has now also been found that the cloud point of non-ionic surfactants with cloud point temperatures below 60 ° C can be raised above 60 ° C by adding an amphoteric surfactant to the detergent mixture. It has also been found that nonionic / amphoteric surfactant compositions are compatible with water-insoluble cationic quaternary ammonium compound plasticizers »such as dimethyl distearylammonium chloride (DMDSAC) and that they enhance the emollient effect of cationic fabric softeners to the same extent. non-ionic substances with a high turbidity point do, which in themselves have turbidity points above the washing temperature. It has also been found that a mixed system nonionic / amphoteric surfactant, even in the presence of a cationic fabric softener, acts synergistically, unexpectedly providing better washing performance than the same or higher doses of each of the two surfactants in the absence of the other.

The relationship between cleaning power and the cloud point of a nonionic / cationic detergent composition is known from U.S. Patents 4,222,905 and 4,259,217. More specifically, as shown in column 5, lines 40-61 of U.S. Patent 4,259,217: "Methods for Washing using textiles according to the present invention, which provide better removal of grease and oil stains and which have the advantage of gentle handling of textiles.These methods use laundry detergent compositions at temperature conditions such that the aqueous detergent solution is either near a nonionic / cationic surfactant (i.e., about 20 ° C away from the cloud point 5 83971 tea, which is the temperature at which the phase rich in nonionic surface tension reducing agent separates from the washing solution.) This can be advantageously achieved by adjusting these nonionic / cationic surface tensions. mixtures of the reducing agent so that their cloud point occurs between about 0-95%, especially between about 10-70 ° C, such as between about 20-70 ° C, most preferably between about 30-50 ° C. During the washing operation, the temperature of the washing solution is kept within this temperature range and 20 ° C from the cloud point temperature.

The efficiency is further improved when the temperature of the aqueous washing solution is about 15 ° C, preferably about 10 ° C away from the cloud point temperature of the nonionic / cationic surface tension reducing agent mixture. "

The requirement to work at wash temperatures coinciding with or below the cloud point temperature is apparently based on the fact that the cloud point of the surfactant mixture in the wash water corresponds to the temperature at which the surfactant micelles aggregate to such an extent that these aggregates become so large that come out of solution, resulting in the observed turbidity. If the temperature is further raised, it causes a complete separation of the aqueous phase and the non-ionic surface tension lowering agent, and as a result their washing power over dirty textiles and other cleaning power is lost.

But, although U.S. Patent 4,259,217 discloses that nonionic / cationic compositions may "depending on the identity and concentration of the cationic component ... provide advantages known in the art for such cationic materials, e.g., ... soften textiles." , however, it is clear that it does not recognize or suggest that the softening effect of cationic substances can be significantly improved by the use of certain nonionic substances which themselves have high cloud point temperatures. That is, while U.S. Patents 4,259,217 and 4,222,905 show a relationship between a nonionic / cationic material mixture, a washing temperature, and a washing power, it has now been found to be a relationship between a nonionic agent alone (or a nonionic agent). and all electrolytes present in the wash water) between the same point and the wash temperature, which affects the softening effect of the water-insoluble cationic quaternary ammonium compound used as a plasticizer. In contrast to the requirement of the present invention to use non-ionic compounds having a high cloud point temperature (i.e. above about 60 ° C, especially above about 90 ° C, even more especially above about 100 ° C), and the above patents prefer nonionic surface tension reducing agents, with relatively low cloud points. Therefore, the nonionic surface tension reducing compounds used in the compositions described in these patents are ethoxylated fatty alcohols having up to 12 moles of ethylene oxide, preferably up to 9 moles of ethylene oxide, and having hydrophilic-lipophilic equilibrium (HLB) values of about 5 to 17, more preferably about 6 to 15.

Thus, it was completely unexpected that the softening effect of the cationic softener could be so dramatically improved without reducing the washing performance of the nonionic surfactant by using a nonionic / amphoteric surfactant system having cloud points above the wash temperature.

The present invention has been accomplished based on this finding. The essential features of the invention are set out in the appended claims.

It is therefore an object of the present invention to improve the softening effect in detergent compositions containing quaternary ammonium compound and nonionic detergent compounds as softeners without significantly adversely affecting the overall washing performance.

i

II

It is a further object of the present invention to significantly increase both the softening power and the washing performance of a detergent-softener mixture containing water-insoluble cationic textile softeners and nonionic surfactants having a cloud point temperature of less than 60 ° C when used in soiled textiles. washing in water at a temperature of at least 60 ° C.

These other objects of the invention, which will become apparent from the following description, have been accomplished by developing a laundry detergent composition capable of washing soiled textiles in an aqueous wash liquor at an elevated temperature of at least about 60 ° C to about 100 ° C to a boiling point. an ionic surfactant with a cloud point below this elevated temperature, a water-insoluble cationic quaternary ammonium compound capable of softening the washed Textile and an amphoteric surfactant in an amount sufficient to raise the mixture to a cloud point higher than this elevated temperature. In a preferred embodiment, the detergent composition comprises at least one detergent additive, such as enhancers, thickeners, anti-fouling agents, anti-corrosion agents, bleaches, enzymes, colorants, sealants, optical brighteners, perfumes.

The non-ionic substances considered are limited only by their water solubility and their cloud point temperature.

Suitable nonionic surfactants are commercially available and are derived from the condensation of an alkylene oxide or an equivalent reactant and a hydrophobic containing reactive hydrogen. Hydrophobic organic compounds may be aliphatic, aromatic or heterocyclic, although the first two classes of compounds are preferred. Preferred hydrophobic types are higher aliphatic alcohols and alkylphenols, although 8,83971 others may also be used, such as carboxylic acids, carboxyamides, mercaptans, sulfonamides, etc. Ethylene oxide condensates with higher alkyl phenols or higher nonionic fatty alcohols are combined. The hydrophobic moiety should normally 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 and above, but the preferred amount is between about 8-22 carbon atoms, especially 10-18 carbon atoms with aliphatic alcohols and 12 carbon atoms. With alkylphenols higher than -20 carbon atoms. The amount of alkylene oxide varies considerably depending on the hydrophobic, but the general guideline and rule is that at least about 3 moles of alkylene oxide per mole of hydrophobic compound should be used up to 14 moles of alkylene oxide per mole of hydrotropic compound to obtain the required water solubility, washing power and which is lower than about 60 ° C.

Thus, the preferred nonionic surface tension reducing agents can be represented by the formula: RO (CH_CH_0) H (I) ZZ Ti wherein R is a primary or secondary straight or branched alkyl chain containing from 8 to 22 carbon atoms and n is on average 4 to 14, preferably 4 -12, especially 6-11? or (R, O (O) (CH2CH2O) mK (II) wherein R * is a primary or secondary alkyl chain having 7 to 12 carbon atoms, and m is on average 4 to 14, preferably 4 to 12, especially 6 to 11 .

Preferred alcohols from which the compounds of formula I are prepared are lauryl, myristyl, cetyl, stearyl and oleyl alcohols and mixtures thereof. Different-

II

The preferred values of R for 9 83971 are C 1 -C 18 C 1 -C 4 alkyls and mixtures thereof are particularly preferred. The preferred values for R 'are C 8 -C 18 2 , such as octyl, isooctyl and nonyl.

A typical example of a non-ionic compound of formula I is lauryl alcohol condensed with 5 or 7 or 11 moles of ethylene oxide. A typical example of a nonionic compound of formula II is isooctylphenol or nonylphenol condensed with 3 to 8 moles of ethylene oxide.

Other nonionic compounds that can be used include polyoxyalkylene esters of organic acids such as higher fatty acids, rosin acids, tall oil acids, acids derived from petroleum oxidation products, etc.

These esters usually contain from about 10 to about 22 carbon atoms in the acid moiety and from about 3 to about 12 moles of ethylene oxide or equivalent.

Other nonionic surface tension reducing agents include alkylene oxide condensates with higher fatty acid amides. The fatty acid group usually contains from about 8 to about 22 carbon atoms and this is condensed with about 3 to about 12 moles of ethylene oxide in the preferred example. The corresponding carboxamides and sulfonamides can also be used as suitable equivalents.

The amount of nonionic agent is the minimum amount which, when added to the wash water, provides a suitable cleaning effect with the amphoteric surfactant. Usually amounts of about 0.5-20%, preferably about 1 to about 15%, and very particularly preferably about 1-10% by weight of the mixture are suitable for use.

10 83971

The compositions of the present invention are intended for use primarily in household and commercial washing machines operating at high washing temperatures, especially water temperatures above about 60 ° C, especially above 80 ° C, and most preferably near the boiling point of water, i. at or above about 100 ° C. But these blends, which are particularly effective when used at these high wash temperatures, also have an improved softening effect even at lower temperatures below 60 ° C and up to 20 ° C and below.

When the mixtures are formulated for use over a very wide temperature range, for example between 20 ° C and 60 ° C, as well as at higher temperatures, and as suitable as possible for a wide variety of textiles, such as sensitive natural and synthetic fibers and textiles that are less sensitive to temperatures such as cotton, etc., the nonionic / amphoteric material ratio is selected such that its cloud point temperature exceeds the wash water temperature by at least about 20 ° C, such as a mixture having a cloud point temperature between 80 ° C and 90 ° C. But where the mixture recipe is intended primarily for use at temperatures of 60 ° C or above, as is commonly the case in industrial washing machines, the mixture may have significantly higher cloud points, for example up to about 50 ° C above the washing temperature. Thus, when the washing temperature is 60 ° C, the nonionic / amphoteric mixture should have a cloud point of about 65 ° C, preferably at least about 70 ° C and even up to about 90 ° C, preferably between about 70 ° C and 85 ° C. . For wash water temperatures of 100 ° C, the cloud point of the mixture is selected from about 105 ° C to about 150 ° C, preferably from 105 ° C to 120 ° C.

As used herein, the term "cloud point" means the temperature at which a graph representing the intensity of light scattering of a mixture relative to the temperature of a wash solution begins to rise sharply to its maximum value of 83971 under the following experimental conditions:

The intensity of light scattering is measured using a model VM-12397 photogoniodiffusion meter, manufactured by Sociäte Française d'Instruments de controle et d'analyses, France (hereinafter referred to as SOFICA. The SOFICA sample chamber and its lid are washed with hot acetone and allowed to dry. A mixture of approximately 15 ml of the solution is placed in the sample chamber using a syringe fitted with a 0.2 .mu.m nucleus pore filter. The sample is left in a variable heat bath and both the bath and the sample are stirred continuously.The temperature of the bath is heated using a SOFICA heater and cooled by adding ice (heating rate = 1 C / min), the temperature of the sample being determined from the temperature of the bath. then determine the light scattering intensity (90 ° angle) of the sample at different temperatures using a green filter without a polarizer in the SOFICA.

In the present invention, cloud point measurements are made of solutions of a nonionic / amphoteric substance (1% by weight) in both distilled water and water containing 10% NaCl, although the latter usually exceeds the amount of salts and electrolytes actually observed in normal use. Thus, if the cloud point of a nonionic / amphoteric substance measured in a 10% NaCl solution satisfies the cloud point of the requirement of this invention, no problem should be formulated with mixtures containing very high concentrations of builder salts and other electrolytes, up to about 85%. a mixture.

In this respect, it is known that the cloud point temperature of a particular mixture in a washing solution depends on the physical and chemical properties (CMC and solubility) of the cationic, nonionic / amphoteric and other additional components contained in this mixture and can be reduced by adding a nonionic surfactant. alkyl chain length, or by reducing the degree of ethoxylation of the nonionic component, or by adding relatively small amounts of electrolytes such as phosphates, polyphosphates, perborates, carbonates, sulfates, and the like (such as about 1 to about 15% of the administered mixture).

Since water-insoluble cationic softening compounds are used in the present invention, the cationic compounds have essentially no effect on the cloud point of the whole mixture. Because the cationic softener compounds used in this invention are insoluble in water, it is very difficult to measure the cloud point temperature of the entire mixture because the mixtures are inherently somewhat turbid. Therefore, the mixing point of the nonionic compound and the nonionic / amphoteric mixture is determined, with or without electrolytes, in the absence of the cationic compound, and in this way a sufficiently accurate measurement of the total cloud point of the mixture containing the cationic compound is obtained.

At wash temperatures of about 60 ° to 70 ° C, all the nonionic surface tension reducing agents described above, but ethoxylated with at least 15 moles of ethylene oxide, usually 15-30 moles of ethylene oxide, give cloud points above the wash temperature, and can to provide an improved softening effect without an amphoteric surface tension reducing agent.

However, at higher washing temperatures, 71 ° to 100 ° C, especially 80 ° to 100 ° C, it is necessary to use more ethoxylated surface tension reducing agents, for example 25 to 30 moles of ethylene oxide per mole of hydrophobic, for example C8 to C8 alkylphenols ethoxylated to 25 to 30 moles. with moles, especially with 28 to 30 moles and particularly preferably with about 30 moles of ethylene oxide, to obtain a sufficiently high cloud point and an improved softening effect without an amphoteric compound.

li 13 83971

Detergent compositions based on non-ionic surfactants with a high dew point can provide improved softening, but these compositions often still suffer from a slight decrease in washing performance. In addition, highly ethoxylated nonionic compounds are more expensive and are less commercially available than the low cloud point nonionic compounds used in the present invention.

These disadvantages can be avoided in the present invention because the addition of an amphoteric surfactant allows the use of less expensive and readily available non-ionic surfactants characterized by cloud points below 60 ° C and hydrophilic-lipophilic equilibria ( HLB) from about 5 to about 17, requiring significantly lower total amounts of surfactants to provide equivalent or better washing performance, and the cloud point of the mixture rises above the selected washing temperature and increases the softening performance of the cationic fabric softener.

As will be described in more detail below, it has now been found that the cloud point of any nonionic compound can be raised up to about 40 ° C, usually about 5 ° -20 ° C by adding an amphoteric surfactant to the mixture, e.g., carboxyethylated higher fatty alkyl (e.g., coconut). ) -imidazoline, an amphoteric compound, usually in an amount of less than about 20% by weight, preferably 1-15%, particularly preferably about 1-10% by weight of the mixture.

In a preferred embodiment of the invention, which is particularly suitable for washing soiled textiles in a wash water at an elevated temperature of about 80 ° C to 100 ° C, the detergent mixture therefore contains a nonionic surfactant of formula I or formula II and a water-insoluble compound of formula III or formula IV. in addition to the cationic quaternary ammonium compound softening the textile, a sufficient amount of the amphoteric surface tension reducing compound so that the cloud point of the mixture rises to 80 ° C to 100 ° C above the elevated temperature, especially above about 105 ° C.

Although not wishing to be bound by any particular theory, it is assumed that amphoteric and nonionic surfactants form mixed micelles that are more soluble than micelles formed by nonionics alone. These mixed cells provide greater resistance and form sufficiently large aggregates that come out of solution and thus raise the cloud point temperature.

Almost any of the known amphoteric surfactants can be used to raise the cloud point in a mixture of nonionic surfactants and a cationic fabric softener.

Examples of suitable amphoteric detergents are those which contain both anionic and cationic groups and which have a hydrophobic organic group which is preferably a higher aliphatic radical, for example about 10 to 20 carbon atoms. These include N-long chain alkylaminocarboxylic acids (for example of the formula R 1 -NR'COOM); N-long chain alkyl iminodicarboxylic acids (for example of the formula RN (R'C00M) 2) and N-long chain alkyl betaines (for example of the formula RR 1 R 4 N + -R'COO) in which R is a long chain alkyl group , e.g. about 10-20 carbons, R is a divalent radical linking the amino and carboxyl moieties of the amino acid (e.g. an alkylene radical having 1 to 4 carbon atoms), M is hydrogen or a salt-forming metal, R 2 is hydrogen or another monovalent substituent ( for example methyl or another lower alkyl), and R 1 and R 2 are monovalent substituents attached to the nitrogen by carbon-nitrogen bonds (for example, methyl or another lower alkyl substituent). Examples of specific li 15 83971 amphoteric detergents include N-alkyl-beta-aminopropionic acids; N-alkyl-beta-iminodipropionic acid and N-alkyl-Ν, Ν-dimethylglycine; the alkyl group may be derived from, for example, coconut fatty alcohol, lauryl alcohol, myristyl alcohol (or lauryl-myristyl mixture), hydrogenated tallow fatty alcohol, cetyl or stearyl alcohol, or a mixture of these alcohols. Substituted aminopropionic and iminodipropionic acids are often supplied in the form of sodium or other salt, which can be used in the same manner in the present invention. Examples of other amphoteric detergents are fatty imidazolines, such as those prepared by reacting a long chain fatty acid (e.g. 10-20 carbon atoms) with diethylenetriamine and monohalocarboxylic acids having 2 to 6 carbon atoms, e.g. 1-coconut-5-hydroxyethyl-5-hydroxyethyl-5 imidazo-aniline; betaines containing a sulfone group instead of a carboxyl group; betaines in which the long-chain substituent is attached to a carboxyl group without a mediating nitrogen atom, for example, internal salts of 2-trimethylamino fatty acids such as 2-trimethylaminolauric acid and compounds of any of the above types in which the nitrogen atom has been replaced by phosphorus.

A specific class of amphoteric surfactants are complex fatty amido surfactants with the general formula V

CH_ / \ 2 f T; , R - C - N - R - OM (V) <- \ o

OH R - COOM

wherein R is a straight or branched, saturated or unsaturated aliphatic group having 12 to 18 carbon atoms (such as lauryl, tridecyl, tetradecyl, pentadecyl, palmityl, heptadecyl, stearyl, tallow, coconut, soy, oleyl, linolyl), 16 83971 1 2 R and R are, independently of one another, a divalent aliphatic hydrocarbon group having 2 to 5 carbon atoms (for example, methylene, ethylene, propylene, butylene, 2-methylbutylene, pentylene, etc.), M is hydrogen or an alkali metal (for example sodium, potassium, cesium and lithium). Examples of commercially available compounds of formula V are N CH-H 1 + 2 c 11 H 23 -C- / Kr CH 2 CH 2-° Na OH_CH 2 COONa available as Miranol CM (liquid) and Miranol DM (paste) manufactured by Miranol Chemical Co ; Soromine AL and Soromine At, manufactured by GAF Corporation and Deriphat compounds from General Mills.

The amphoteric compounds described in columns 3 and 4 of U.S. Patent 4,203,872 may also be used.

They comprise the following seven groups of compounds 1) betaine detergents of the formula ί2 R, -N + -R „-C-O- 1 i 4 R3

A suitable example is CH o K II -

(C1-C14) n-alkyl-N CH2CO

ch3 il 17 83971 2) Betaine detergents with an alkyl bridge and the formula 0 h? 2 0

Il H '+ Il _

R1 - CH2 - C - N - CH2CH2CH2 - N - R4 - CO

«3

A suitable example is

0 fH3 O

II H I II - (C 1 -C 11 alkyl-CH, - C - N - CH 0 CH_CHO - N - CH 0 CO 0 '4 J J 2. 2 2 2 j 2 CH 3 3) Imidazoline detergents of formula

CH-COOH,

1 + Il -

R.-C -N - R. - 0 - CH-CO

1 H I 4 2 N \ ^ CH2 ch2

A suitable example is CH, COOH.

I + li _

(C1QCl4) n-alkyl-C-N-CH2CH2OCH2CO

N CH 1/2 CH 2 4) Alkylamine propionate detergents of formula

B

R1 - N - CH2CH2COOH

5) Alkyliminodipropionate detergents of the formula

• / ^ CH2CH2COOH

R 1 och2ch2ch2 n /

Nnsch2ch2cooh is 83971 6) Ether-bridged alkyl iminodipropionate detergents of the formula ch2ch2cooh R1-OCH2CH2CH2-N2

CH2CH2COOH

7) Amphoteric detergents based on coconut imidazoline with the formula

H O

R.-C - N + -CH_OCH-CH_CO ~ 1 n I 2 2 2

N CH

ch2

Mixtures of any amphoteric detergent with each other and with the amine oxide detergents listed above can also be used.

In the above formulas 1) to 7), R 1 is a straight or branched, saturated or unsaturated aliphatic radical containing from about 7 to about 20, preferably from about 8 to 18, particularly preferably from about 10 to 14 carbon atoms, R 2 and R 3 are each lower alkyl C 1 -, preferably methyl or ethyl, particularly preferably ethyl, R 1 is divalent C 1 -C 4 -alkyl, preferably methylene or ethylene, particularly preferably ethylene.

A particularly preferred class of amphoteric compounds are the carboxyethylated higher fatty alkyl imidazoline compounds of the formula 8 / CH- / + - H «C HN -CHoCHoC00 2 | I 2 2 HOR.-N C — R1 4 1

II

19 83971 having a straight or branched, saturated or unsaturated aliphatic group having 7 to 20 carbon atoms, preferably 8 to 18 carbon atoms, particularly preferably 10 to 14 carbon atoms, and R 1 is a divalent lower alkyl group having 1 to 4 carbon atoms , preferably 1 or 2 carbon atoms. Preferred groups R 1 are coconut, tallow, heptadecyl, oleyl, decyl and dodecyl, especially coconut (i.e. derived from coconut / co-fatty acid). The preferred group R 1 is ethylene (-C 1-4 Cl 2 -). The compound carboxyethylated coconut imidazoline is available as Rexoteric C SF, a trademark of Rexolin containing 100% active ingredient, or as a solution containing 45% active ingredient.

Open-chain carboxyethylated higher-fatty alkylamine derivatives are another class of preferred amphoteric compounds. These include groups 4), 5) and 6) above, i.e. alkyl iminopropionate detergents and ether bridged alkyl iminopropionate detergents. The carboxyethylated octylamine, obtained under the name Rexoteric OASF from Rexolin, is a particularly preferred member of this group.

Other suitable classes of amphoteric surfactants include sarcosinates, taurines, isothionates and the like.

Although there are no precise instructions on how to select combinations of nonionic and amphoteric surfactants, or appropriate amounts of both, to obtain the required cloud point temperature above the wash temperature to promote the softening effect of the cationic fabric softener, it is usually sufficient to use an amphoteric surfactant - with an amount of nonionic surfactant as defined above - an amount of about 1 to 20%, preferably about 1 to about 15%, especially about 1 to about 10% based on the total surface weight of the mixture. Suitable ratios of nonionic: amphoteric within the above-mentioned amounts are about 1: 5 to 10: 1, preferably 1: 3 to 6: 1, especially 1: 2 to 4: 1.

However, some general rules and guidelines regarding the factors affecting the cloud point have been explained above, such as, for example, longer alkyl chain groups in an amphoteric substance usually lower the cloud point of the mixture. It should therefore be appreciated that within the above general limits, the amount and nature of the amphoteric may vary widely depending on the specific nature of the recipe and the intended working temperature, as well as the nature and amounts of other ingredients, especially nonionic surfactant and electrolytes.

Typical examples of how an amphoteric compound has a cloud point enhancing effect can be seen from the following experimental data obtained by measuring cloud point temperatures (° C) according to the method described above from solutions containing 1% active substance in either distilled water or brine (10% NaCl):

Samepiste (° C)

Surfactant (w / w) Distilled H., 10% NaC

A. C 1 -C 2 alkyl alcohol EO 7: 1 43 + 2 <25 B. C 1 -C 2 | ^ -alkyl alcohol EO 1 1: 1 85 + 2 59 + 2 A. + Rexoteric OASF (1: 2) 75 + 2 50 + 2 A. + Rexoteric OASF (4: 1) 58 + 2 28 + 2 A. + Rexoteric CSF (4: 1) 55 + 2 42 + 2 B. + Rexoteric OASF (1: 2)> 100 85 + 2 B. + Rexoteric OASF (4: 1) 95 + 2 70 + 2 B. + Rexoteric CSF (4 : 1)> 100 80 + 2

Iso-octylphenol EO 30: 1> 100

Nonylphenol EO 20: 1> 100 72

Nonylphenol EO 15: 1 91 - I: 21 83971

The above data also show, for comparison, cloud point values for some higher-ethoxylated-alkylphenol-non-ionic bridge detergents.

The third main ingredient in the recipes in question is a cationic textile softener. Softeners are used to make fabrics and textiles soft, and the terms "softener" and "softener" refer to handling, hand, touch, or feel; this is the tactile impression a hand or body receives from a fabric or weaving product and has an aesthetic and commercial significance. Cationic textile softeners usually contain at least one hydrophilic group with a negative charge and a hydrophobic group containing a quaternary ammonium atom that is positively charged.

In order to provide sufficient softness to the treated textiles, it is important that the cationic compound be insoluble in water. As used herein, a compound is considered to be insoluble in water if its solubility in water at the wash temperature is less than 1%, preferably less than about 1/2%.

It is usually desired that the cationic softener be added to the mixture in a form which ensures good dispersion in the washing liquid and therefore maximum adhesion to the treated textile. Such dispersed particle sizes in the wash liquor are from about <10 to about 50, preferably from about 10 to about 20 for a cationic softener to provide this effect.

Suitable commercially known water-insoluble quaternary ammonium compounds which are textile softeners have the following formula: v ^ + 22 83971 x "(III) _R2 \ * 5; --- JX" (IV) / \ R6 R7 where R1 and R £ and Rj. and R 9 each independently represent a long chain aliphatic radical having from 16 to 22 carbon atoms, R 1 and R 2 and R 2 independently represent lower alkyl radicals, or R 8 may be a group -R 9 NHCR 8 where Ö

Rg is a long chain aliphatic radical having 16 to 22 carbon atoms, and Rg is a divalent alkyl group having 1 to 3 carbon atoms, and X is a water-soluble salt-forming anion such as a halide, for example chloride, bromide, iodide; sulfate, acetate, hydroxide, methosulfate, ethosulfate, or a similar inorganic or organic, solubilizing mono- or dibasic radical, the carbon chain of an aliphatic radical having 16 to 22 carbon atoms, especially 16 to 20 carbon atoms, may be straight or branched, and saturated or saturated. Lower alkyl radicals have 1 to 4 carbon atoms and may contain a hydroxy radical. Carbon chains are preferably obtained from long chain fatty acids such as those derived from tallow or soybean oil. The terms "di-soy" and "di-tallow", etc., as used herein, refer to the source from which the long chain fatty alkyl chains are derived. Mixtures of the above, as well as other water-insoluble quaternary ammonium surfactants, may also be used if desired. The preferred ammonium salt is dialkyldimethylammonium chloride in which the alkyl group is derived from hardened tallow or stearic acid, or di-higher alkylimidazolinium chloride. Specific examples of 2383,971 emollient quaternary ammonium compounds of formula III suitable for use in the composition of the present invention include: cured dialdimethylammonium chloride, dimethyldistearylammonium chloride, dimethylstearylethylammonium bromide, dimethylstearylethylammonium bromide, dimethylammonium chloride, their corresponding sulfate, methosulfate, ethosulfate, bromide and hydroxide salts, etc.

Examples of emollient quaternary ammonium compounds of formula IV are 1-methyl-1,2-diheptadecylimidazolinium chloride {bromide, irethosulfate), 1,2-diicosylalkylamidoethyl-1-methylimidazolinium chloride methosulphate, etc.), 2-hexadecyl-1-methyl-1- (2-dodecylamido) ethyl} -imidazinium methyl sulfate, 2-heptadecyl-1-methyl-1 -] (2-Stearylamido) -ethylimidazolinium methyl sulfate, 2-nonadecyl / henicosyl-1- (T2-eicosyl / docosylimido) -ethylimidazinium methyl chloride.

Dimethyl-distearylammonium chloride has been considered particularly preferred due to its superior good emollient effect, its dispersion in nature, low water solubility, easy availability and cost.

The amount of cationic fabric softener may usually range from about 1 to 20%, especially from about 4 to about 16%, and particularly preferably from about 6 to 9% by weight of the mixture.

The weight ratio of nonionic surfactant to cationic fabric softener is from about 1:10 to 5: 1, preferably from about 1: 8 to 4.5: 1.

The detergent compositions of this invention are preferably supplied as free-flowing powders, but may also be in liquid form.

24 83971

The detergent composition of the invention may also contain and usually contains water-soluble enhancing salts. Water-soluble inorganic time-enhancing salts can be used either alone with the detergent compound or in admixture with other enhancers, and are alkali metal carbonates, borates, phosphates, polyphosphates, bicarbonates, and silicates. (Ammonium or substituted ammonium salts may also be used). Specific examples of such salts are sodium tripolyphosphate, sodium carbonate, sodium tetraborate, sodium pyrophosphate, potassium pyrophosphate, sodium bicarbonate, potassium tripolyphosphate, sodium hexa-metaphosphate, sodium disodium carbonate, sodium sesquicarbonate, Alkali metal silicates are useful builder salts that also make the mixture corrosion resistant to washing machine parts. Of the sodium silicates, those with Na 2 O / SiO 2 ratios of 1.6 / 1 to 1 / 3.2, especially about 1/2 to 1 / 2.8, are preferred. Potassium silicates with the same weight ratios can also be used.

Another class of enhancers useful in this context are water-insoluble aluminosilicates, both crystalline and amorphous types. Various crystalline zeolites (i.e., aluminosilicates) are described in GB Patent 1,504,168, U.S. Patent 4,409,136, and CA Patents 1,072,835, 1,087,477, all of which are incorporated herein by reference. An example of amorphous zeolites useful herein is available from BE Patent 835,351 and this patent is also incorporated herein by reference. Zeolites usually have the formula: (M20) x. (A12 ° 3) y. (Si ° 2) 2.WH2O where x is 1, y is 0.8 to 1.2 and preferably 1, z is 1.5 to 3 , 5 or higher and preferably 2-3 and w is 0-9, preferably 2.5-6 and M is preferably sodium. A typical zeolite is type A or similar in structure, and type 4 A is considered to be particularly preferred. The calcium alum exchange capacity of the best aluminosilicates is about 200 milliequivalents per gram, or greater, for example 400.

Other substances such as clay grades, especially water-insoluble types, can be used as additives in the compositions of this invention. Ben-tonite is particularly useful. This substance is mainly montmorillonite, which is a hydrogenated aluminosilicate in which about 1/6 of the aluminum atoms can be replaced by magnesium atoms and with which loosely varying amounts of hydrogen, sodium, potassium, calcium, etc. can be combined. Bentonite in its purified form (ie free from gravel, etc. .) which is suitable for detergents always contains at least 50% montmorillonite and thus has a cation exchange capacity of at least about 50 to 75 milliequivalents per 100 g of bentonite. Particularly preferred bentonites are Wyoming or Western US bentonites sold under the name Thixo-Jels 1, 2, 3 and 4 Georgia, Kaolin Co. These bentonites are known to soften textiles, as explained in GB Patent 401,413 and GB Patent 461,221 ·

Examples of organic temporal sequestering enhancer salts which can be used either alone with a detergent or mixed with other organic or inorganic enhancers are alkali metal, ammonium or substituted ammonium, amino polycarboxylates, for example sodium and potassium methylenediamine tetraacetate. , sodium and potassium nitrilotriacetates and triethanolammonium N- (2-hydroxyethyl) nitrilodiacetates. Mixed salts of these polycarboxylates are also suitable.

Other suitable enhancers of the organic type include carboxymethyl succinates, tartronates and glycollates. Of particular value are polyacetal carboxylates. Polyacetal carboxylates and their use in detergent compositions are described in U.S. Pat. Nos. 4,144,226, 4,315,092 and 4,146,495.

26 83971

Other similar U.S. patents for enhancers include: 4,141,676; 4,169,934; 4,201,858; 4,204,852; 4,224,420; 4,225,685; 4,226,960; 4,233,422; 4,233,423; 4,302,564 and 4,303,777. EP Patent Applications Nos. 0 015 024, 0 021 491 and 0 063 399 also deal with the same.

Several other detergent additives or adjuvants may be present in the detergent product to give it the desired properties, either functional or aesthetic in nature. Thus, minor amounts of dirt suspending or anti-staining agents may be added to the recipe, for example polyvinyl alcohol, fatty amides, sodium carboxymethylcellulose, hydroxypropylmethylcellulose, optical brighteners such as cotton, amine and polyester fibers, e.g. - and benzidine sulfone mixtures, especially sulfonated substituted triazinyltilbene, sulfonated naphthotriazolistilbene, benzidine sulfone, etc., the most preferred are mixtures of stilbene and triazole.

Sealants such as ultramarine blue; enzymes, preferably proteolytic enzymes such as subtilisin, bromelain, papain, trypsin and pepsin, as well as amylase-type enzymes; bactericides for example tetrachlorosalicylanilide, hexachlorophene; fungicides; dyes; pigments (water dispersible) preservatives; ultraviolet light absorbing agents; anti-yellowing agents such as sodium carboxymethylcellulose, a complex of “C22-alkyl alcohol and C12-8-alkyl sulfate; pH regulators and pH buffers; bleaching agents which do not fade colors, perfumes and anti-foaming agents or anti-foaming agents, for example silicone compounds.

Bleaching agents are generally classified as chlorine bleaching agents and oxygen bleaching agents for convenience. The chlorine bleaches are of the sodium hypochlorite (NaOCl) type, potassium 27,83971 dichloroisocyanurate (59% free chlorine) and trichloroisocyanuric acid (85% free chlorine). Oxygen bleaches are represented by sodium and potassium perborates and potassium monopersulfate. Oxygen bleaches are preferred. Bleach stabilizing and / or activating agents such as tetraacetylethylenediamine may also be used.

The weight percentages of the components that may be present in the preferred treatment compositions as a whole in% by weight (active ingredient) of the total weight of the final product are as follows: nonionic detergent - about 0.5% - about 20%, preferably about 1 % to about 15%, especially 1 to 10%; an amphoteric surfactant - about 2 to 20%, preferably 1 to 15%, and especially 1 to 10%; a quaternary ammonium salt - from about 1% to about 20%, preferably from about 4% to about 16%, especially from about 6 to 9%; alkali metal enhancing salts - from about 20% to about 85% and preferably from about 35% to about 80% and especially from about 60 to 75%, and the rest detergent additives, fillers and moisture. Suitable ranges for detergent additives are: enzymes - 0 - 2%, especially 0.7 - 1.3%; corrosion inhibitors - about 0 to 40%, and preferably 5 to 30%; antifoaming agents 0 to 15%, preferably 0 to 5%, for example 0.1 to 3%; dirt stain suspending agents and anti-settling and anti-yellowing agents -0 to 10%, preferably 0.5 to 5%; colorants, perfumes, brighteners and sealants in a total weight of 0% to about 2% and preferably 0% to about 1%; pH adjusting agents and pH buffers - 0 to 5%, preferably 0% to 2%; bleach - 0% to about 40% and preferably 0% to about 25%, for example 2 to 20%; bleach stabilizers and activators 0 to about 15%, preferably 0 to 10%, for example 0.1 to 8%. The choice of additives is made so that they are compatible with the main ingredients of the detergent composition.

Although nonionic and amphoteric agents are preferably the only surfactant compounds used in the compositions of this invention, small amounts of other surfactants, such as other compounds containing nonionic, anionic and amphoteric ions, may also be used, preferably up to 20% by weight, especially at most 10% by weight, and most preferably at most 5% by weight.

Examples of other nonionic compounds are all of the above having more than 15 moles of alkylene oxide per mole of hydrophobic, for example 15-30 moles of ethylene oxide per mole of hydrophobic.

Examples of suitable anionic detergents are water-soluble salts of higher fatty acids, for example sodium, potassium, ammonium, alkylammonium salts containing about 8 to 20 carbon atoms, preferably 10 to 18 carbon atoms.

Suitable fatty acids can be obtained from waxes and oils of animal or vegetable origin, for example tallow, coconut oil, tall oil and mixtures thereof. Particularly useful are the sodium and potassium salts of fatty acid mixtures derived from coconut oil and tallow, for example, coconut soap and potassium tallow.

The anionic class of detergents also includes water-soluble synthetic sulfate and sulfonate detergents having an alkyl radical of 8 to 26 and preferably about 12 to 22 carbon atoms in their molecular structure. (The term alkyl includes the alkyl moiety of higher acyl radicals).

Examples of sulfonated anionic detergents include higher alkyl-mononuclear aromatic sulfonates such as higher alkyl-benzene sulfonates containing from 10 to 16 carbon atoms in a higher alkyl group in either a straight or branched chain of higher alkylene sulfonylsulphenes, for example higher alkylate benzene benzene sodium, potassium, and ammonium salts of higher alkyl phenol sulfonates, higher naphthalene sulfonate. One preferred sulfonate li 29 83971 is a straight chain alkyl benzene sulfonate having a high content of 3- (or higher) phenyl isomers and a correspondingly low content of 2- (or lower) phenyl isomers (well below 50%), i.e. the alkyl group is attached to the benzene ring primarily in position 3 or higher (e.g., 4, 5, 6, or 7), and the concentration of isomers in which the benzene ring is attached in position 2 or 1 is correspondingly low. Compounds considered to be particularly good are described in U.S. Patent 3,320,174.

Other suitable anionic detergents include olefin sulfonates such as long chain alkene sulfonates, long chain hydroxyalkane sulfonates or mixtures of alkene sulfonates and hydroxyalkane sulfonates. These olefin sulfonate detergents can be prepared in a known manner by reacting SO 2 with long chain olefins containing 8-25, preferably 12-21 carbon atoms and having the formula RCH-CHR 4, where R is a higher alkyl group having 6 to 6 carbon atoms. 23 carbons and R 1 is an alkyl group of 1 to 17 carbons or hydrogen to form a mixture of sultons and alkene sulfonic acids, which is then treated to convert the sultones to sulfonates. Other examples of sulphate or sulphonate detergents are paraffin sulphonates containing from about 10 to 20, preferably from about 15 to 20 carbon atoms, for example primary paraffin sulphonates made by administering long chain alpha-olefins and bisulphites and paraffin sulphonates with disclosed in U.S. Patents 2,503,280; 2,507,088; 3,260,741; 3,372,188 and DE patent 735,096; sodium and potassium sulfates of higher alcohols containing from 8 to 18 carbon atoms, such as sodium lauryl sulfate and sodium tallow alcohol sulfate; sodium and potassium salts of alpha-sulfo-fatty acid esters containing about 10 to 20 carbon atoms in the acyl group, for example methyl alpha-sulfomyristate and methyl-alpha-sulfothalowate, ammonium sulphates of higher (C 1-4) mono- and diglycerides of fatty acids , for example stearin monoglyceride mono- sulfate; sodium and alkylol ammonium salts of alkyl polyethyleneoxy ether sulfates prepared by condensing 1-5 moles of ethylene oxide with one mole of higher (Cg - g) alcohol; sodium higher alkyl (C ^ Q-C ^ g) glyceryl; sodium or potassium alkyl phenol polyethylene oxy ether sulfates having from about 1 to about 6 oxyethylene groups per molecule and wherein the alkyl radicals contain from about 8 to about 12 carbon atoms.

Suitable anionic detergents also include C8-C18-acyl-sarcosinates (for example sodium lauroyl sarcosinate), sodium and potassium salts resulting from the reaction of higher fatty acids having 8 to 18 carbon atoms, in which acids the 8 to 18 carbon atoms of the molecule have an esterified isothionic acid. and the sodium and potassium salts of C8-C8-acyl-N-methyltaurides, for example sodium cocoyl methyl taurate and potassium stearoyl methyl taurate.

Amphoteric surface tension reducing agents include derivatives of quaternary ammonium compounds containing a straight aliphatic chain of about 14 to 18 carbon atoms and an anionic water-soluble group such as sulfate or sulfonate. Specific examples are 3- (N, N-dimethyl-N-hexadecylammonio) -2-hydroxypropane-1-sulfonate, 3- (N, N-dimethyl-N-tallowylammonio) -2-hydroxypropane-1-sulfonate , 3- (Ν, Ν-dimethyl-N-tetradecylammonio) propane-1-sulfonate and 6-N, N- (dimethyl-N-hexadecylammonio) hexanoate.

It has also been found that a mixture of a nonionic / amphoteric surface tension reducing agent unexpectedly has a better washing performance compared to the same amount by weight of nonionic alone or compared to a similar nonionic agent ethoxylated with a sufficient amount of ethylene oxide to provide the same cloud point. For example, when carboxy-ethylated higher-fatty alkyl imidazoline is used as the amphoteric agent, about 50-90% of the nonionic surface tension lowering agent can be replaced with only about 10-40% of the amphoteric surface tension reducing agent to provide the same or better softening. (depending on the washing temperature) and to achieve the same or better washing performance.

The amphoteric detergent can act synergistically with the nonionic detergent with respect to the washing performance and therefore the total amount of nonionic and amphoteric detergent in the detergent formulation can be significantly reduced, for example 3-20%, especially 5-10% of the mixture. The ratio of nonionic to amphoteric is not particularly accurate, but with a given weight of nonionic, the cloud point increases as the amount of amphoteric increases. Generally, the ratios of nonionic to amphoteric agent of about 1: 5 to 10: 1, more preferably 1: 3 to 6: 1, particularly preferably 1: 2 to 4: 1 give an improved washing result, as well as a softening result (where it is necessary to increase the nonionic cloud point of the substance above the washing temperature). In addition, within the above amounts and ratios, the nonionic / amphoteric detergent composition is fully compatible with the emollient cationic quaternary ammonium compound.

The so-called in addition to the active ingredients, other important ingredients are the salt or salts of the excipient and moisture. The filler salt helps to improve the mechanical properties of the product, usually by improving the flow rate and preventing the tendency to become sticky. It may also help promote the dissolution of the product in the wash water. Of the useful excipient salts, sodium sulfate is the best, preferably in anhydrous form. But other excipients such as sodium chloride, sodium acetate and alkali metal salts of such acids may also be used, as may starches, talc, silica and various other excipients which have the function of a carrier or support. The proportion of filler or mixture thereof is between 5 and 50%, preferably between 10 and 30% and most preferably about 20%, especially when anhydrous sodium sulphate is in the form of a filler salt. Moisture contents are normally 1 to 15% f, preferably 5 to 12%, and most preferably about 8%. When these ratios are used, the result is a product with good fluidity, in particulate or dusty or granular form, which can be prevented from becoming too dusty by controlling the particle size and moisture content.

Regardless of the form of the laundry detergent, its use in the washing process is essentially the same. The mixture in particulate form is usually added to the washing water in an automatic washing machine so that its concentration in the washing water can be between about 0.05 and 1.5%, usually 0.1 to 1.2%. The water to which it is added is preferably of medium or low hardness, for example 30 to 120 ppm hardness as calcium carbonate, but both softer and harder waters may be used. The temperature of the water may be from 20 ° C to 100 ° C and is preferably from 60 ° C to 100 ° C in cases where the textile or laundry is able to withstand high temperatures without deterioration or fading of the colors. When laundry is desired to be performed at a low temperature, the temperature is maintained between 20 ° C and 40 ° C, and these conditions also result in good cleaning and softening, although the garment may not be as clean as when washed at higher temperatures. In said concentrations of detergent compositions, the pH of the wash water is usually 7 to 11, preferably 8 to 10. At these pH values, the mixture is effective as a detergent, and is not unsuitable for washing material or human skin, and washes and softens effectively. The weight ratio of laundry to water is usually about 1: 4 to 1:30, or 1:10 to 1:30.

The compositions of the present invention provide a significantly improved softening result at wash temperatures of at least 60 ° C compared to, for example, identical recipes in which no amphoteric compound has been used to raise the cloud point of the detergent above 60 ° C. This effect could not have been predicted from the previous l! 33 83971 technique because the correlation between the cloud point and the softening effect of a nonionic surface tension reducing agent is not known.

The following is a recipe for a typical fine powder detergent-softener mixture according to the invention, in which all parts and percentages are by weight:

Seos A

C 1 -C 18 fatty alcohol EO 11: 1 2.0

Rexoteric OASF 45 (45% Al) 8.9 (= carboxyethylated coconut imidazoline) sodium metasilicate 8.0 sodium tripolyphosphate 28.0 sodium pyrophosphate * 10 H2O 24.0 sodium orthophosphate 0.5 nitrilotriacetate (NTA), Na- salt 8.0 dimethyl distearyl ammonium chloride (93% Al) 8.0 small amounts of other ingredients (eg perfume, optical brighteners, moisture, etc.) rest

The soiled textiles are washed at 60 ° C in about 20 liters of water containing 0,1 g of hardness ions per liter using about 100 g of mixture A.

The softness of the washed textiles was assessed by a panel of four expert judges in very many repetitions after cumulative washes. For comparison, an identical mixture is prepared except that Rexoteric OASF is not used and the amount of C12-C15 fatty alcohol EO 11: 1 is added to 8% (comparative example), or about 15% of C2-C15 fatty alcohol EO is used. : 1 (Comparative Example 1) or 15% nonylphenol EO 20: 1 (Comparative Example 2) in place of the nonionic and amphoteric compound used in Mixture D, and each of these mixtures is evaluated in the same manner as Mixture A. Each mixture is rated on a scale of 1-10, wherein "10" is the highest rating and represents the same detergent mixture (without cationic fabric softener) and fabric softener (dimethyl distearyl ammonium chloride) added to the rinse cycle. On this scale, Mixture A and Comparative Examples 1 and 2 achieved a grade of 5-6 and an equivalent purification efficiency grade. The mixture of the comparative example received only a grade of 2-3.

When 5-fatty alcohol EO 11: 1 is replaced in mixture A by the same amount of nonylphenol EO 4: 1 or nonylphenol EO 8: 1, or 2'-fatty alcohol 7: 1 or β-fatty alcohol EO 5: 1, also rated 5-6.

Similar good results are obtained by replacing dimethyldistearylammonium chloride (mixture A) with dimethylhydrogen-dithalammonium chloride, diethyldisoyl-ammonium chloride, dimethylstearyl-cetyl-ammonium chloride or 2-hexadecyl-1-methyl-1- [72-dodecylamido) - ethyl imidazolinium methyl sulfone and their corresponding bromide, sulfate and hydroxide salts.

Similar good results are obtained by replacing Rexoteric OASF in mixture A with Rexoteric CSF, Miranol DM

CH., 0

I 3 II

(C10-C14) n-alkyl-N + CH2CO-, cb3 or H? n-alkyl (C 0 -C) -C-N + -CH_OCH, CH.CO.

12 18 || | 2 2 2 V / CK2 c H2 A particular advantage of the detergent-softener compositions of this invention is that because they can provide a better washing effect with smaller total amounts of surfactants, much more concentrated recipes and packages can be prepared for consumer use.

Il 35 83971

Methods for preparing the compositions described herein are well known in the art, and reference is made in particular to U.S. Patent 4,269,722, which discloses the preparation of relatively high density, enhanced nonionic powders from spray-dried spheres sprayed on the surface with a nonionic detergent. (which may contain minor amounts of other conventional additives such as colorant, perfume, brightener, bleach, etc.). This entire patent specification is incorporated herein by reference.

Claims (11)

36 83971 A laundry detergent which can be used to wash and soften soiled textiles in an aqueous washing liquid at an elevated washing temperature of at least about 60 ° C, characterized in that said mixture contains as active ingredients by weight (a) 0.5-20% of water-soluble an ionic surfactant having a cloud point of less than 60 ° C; and (b> 1-20 X a water-insoluble cationic quaternary ammonium compound which softens the washed Textile and selected from the group consisting of compounds represented by formulas III and IV: R1 / R3 + _ NX <III> r2 R4 and 1+ - R = --ZX (IV) - SX R6 R7 wherein R1 and R8 and R8 and R8 independently represent long chain and aliphatic radicals having from 16 to 22 carbon atoms, R8 and R4 and R8 each independently represent lower alkyl radicals; may be a group -RgNHCRg, wherein Rq is a long chain aliphatic radical having 16 to 22 carbon atoms, and Rg is a divalent alkyl radical having 1 to 3 carbon atoms, and X is a salt-forming anion, and <c) 1-20 X amphoteric surfactant in sufficient quantity to bring the cloud point above 37 83971 o 60 ° C, which amphoteric surfactant is selected as follows: (1) Betaine detergents of the formula R 2 O »R 1 -M -R 4 -C-O-R 3 <2) Betaine detergents with an alkyl bridge of the formula O R2 O II h '♦ I - R1-CH2-C-N_CH2CH2CH2- ^ -R4-CO R3 (3> Imidazoline detergents of the formula ch2cooh O + II - R1 -C -N -Ra-O-CH, C0 1. ii, 4 2 * / ^ 2 ch2 <4) Alkyl iminopropionate detergents of the formula H r1-n-ch2ch2cooh (5) Alkyliminodipropionate Detergents of the formula ^ ch2ch2cooh R1-N ^ ^ Ν: Η2σΗ2αοοΗ <6> Ether-bridged alkyl iminodipropionate detergents of the formula 3θ 83971 ^ ch2ch2cooh R1-OCH2CH2CH2-N amphoteric detergents of the formula HI 0 Rj ^ -cn -ch2och2ch2!: o N CH, \ / ch2 (8) Amphoteric detergents based on carboxyethylated higher-fatty alkylimidazole with the formula CHn / 1 \ + h2c hn -ch2ch2coo HOR2-N ===== C-R 1 and mixtures thereof showing an aliphatic radical having 7 to 20 carbon atoms, R 2 and R 8 each represent a lower alkyl group, already has 1 to 4 carbon atoms, and R 4 represents a divalent lower alkyl radical having 1 to 4 carbon atoms, and <d> the remaining detergent auxiliaries, fillers and moisture, and that the ratio a>: b> is 1:10 to 5: 1 and the ratio a): c) is 1: 5-10: 1. Mixture according to Claim 1, characterized in that the nonionic surfactant <a> is selected from the group consisting of the compounds represented by the formula I and II R0 (CH2CH2O) nH (I) 0 <CH2CH2O) mH (II) 39 83971 in which R is a primary or secondary straight or branched alkyl chain having 8 to 22 carbon atoms, R 'is a primary or secondary alkyl chain having 7 to 12 carbon atoms, and n and m are numbers having an average value of 4 to 14. The composition of claim 1, further comprising at least one detergent additive selected from the group consisting of inorganic detergent active salts, organic detergent enhancing salts, stain suspending agents, anti-fouling agents, fatty amides, effervescent and foaming agents. inhibitors, optical brighteners, dyes, pigments, sealants, anti-yellowing agents, enzymes, anti-corrosion agents, pH regulators, pH buffers, bactericides, fungicides, preservatives, bleaches, bleaches, bleaches, substances, bleach activators, perfumes and water. A composition according to claim 1, characterized in that it contains, based on the amount by weight of the active substance, a) from about 0.5 to about 20 X of nonionic surfactant; b) from about 1 to about 20 X of a cationic plasticizer; c) from about 1 to about 20 X amphoteric surfactant; d) about 20 to about 65X detergent builder salts; e) 0 to about 40 X corrosion inhibitors; f> 0 to about 40 X bleaches and activators; g) 0 to about 10 X of suspending or preventing the re-precipitation of stains; h> 0 to about 10 X anti-yellowing agents; i) 0 to about 2 X of each of at least one of the following: optical brighteners, dyes, sealants, bactericides, fungicides and enzymes; j) 0 to about 15 X of foaming agents or anti-foaming agents; 40 83971 le) O - about 5 X each, pH modifiers and pH pellets; 1. the rest of the water. The composition of claim 1, characterized in that it contains: a) about 1 to 10% of a nonionic surfactant; b) about 6 to 9 X cationic fabric softener; c> about 1 to 10 X of amphoteric surfactant; and d) the remaining detergent auxiliaries, fillers and moisture, wherein the ratio of a): b) is 1: 8 to 4.5: 1 and the ratio a): c) is 1: 2 to 4: 1. A composition according to claim 1, characterized in that said water-soluble nonionic surfactant is present in an amount of 1-15 X. A composition according to claim 1, characterized in that said water-soluble nonionic surfactant is present in an amount of 1-10 X. A mixture according to claim 1, characterized in that said water-insoluble cationic quaternary ammonium compound is present in an amount of 4 to 16 X. A mixture according to claim 1, characterized in that said water-insoluble cationic quaternary ammonium compound is present in an amount of 6-9 X. Mixture according to Claim 1, characterized in that the amphoteric surfactant is present in an amount of 1 to 15 X. Mixture according to Claim 1, characterized in that the amphoteric surfactant is present in an amount of 1 to 10 X. «83971