LU86267A1 - ANTISTATIC LIQUID DETERGENT COMPOSITION AND FABRIC SOFTENER, METHOD FOR WASHING LAUNDRY USING SAME, ANTISTATIC COMPOSITION AND COMPOSITION AND FABRIC SOFTENER AND METHOD FOR TREATING LAUNDRY - Google Patents

Description

"Μ 0. -s

The present application relates to a liquid detergent which contains one or more antistatic agents already described in the U.S. patent application. N ° 674 194 filed on November 23, 1984 in the name of Robert A. Bauman and in 5 the corresponding French application 83 12 817 filed on August 3, 1983.

The present invention relates to detergent compositions. More particularly, it relates to liquid, antistatic and fabric softening detergent compositions, preferably detergent compositions 4 reinforced with a detergency builder, which contain a synthetic organic detergent, a detergency builder (preferably) for the detergent , bentonite and an antistatic agent of the type isostearamide N- (higher alipha-15), in an aqueous medium. The invention also contemplates a method for washing and drying laundry which provides soft laundry with no static charge or low electrostatic charge despite the fact that it has been subjected to a conventional drum drying operation.

Reinforced synthetic organic detergent compositions are currently the cleaning materials of choice for washing dirty laundry. These compositions have been shown to be exceptionally effective in laundering fabric articles made of synthetic and / or natural fibrous materials, whether these have been stained with oily, proteinaceous or clayey soiling, these three types of soiling being those which the 'most often found in laundering' 2% '. * domestic, and which are fairly representative of the normally appearing * soiling which is present on ordinary dirty laundry. With the replacement of the soap in the washing compositions with synthetic organic detergents, the softening effect of the soap (generally due to an insoluble soap which is deposited on the fibers of the fabric constituting the laundry) has been lost and in particular in the presence of certain adjuvant mineral salts of detergency, the linen often becomes unpleasant to the touch, rough and stiff (or cardboard). For years, it has been known that bentonite, when added to synthetic organic detergent compositions based on anionic detergents, could soften the laundry and thereby make the modified detergent compositions acceptable to the consumer.

Although liquid detergent compositions have been known for years, it is only relatively recently that reinforced detergent compositions for heavy laundry laundering, in the liquid state, have become popular. These compositions, especially when they contain suspended solids, are sometimes thickened in order to avoid separation of the components during storage. Bentonite of the gelling type, such as bentonite from the western United States of America or from Wyoming, has thickening properties and, moreover, it constitutes a fabric softener.

With the advent of synthetic polymer fibers and clothing and other linen produced from such fibers and from blends of such plastics with natural fibers, such as cotton / polyester blends, and with the increasing use automatic clothes dryers, which are almost all of the drum drying type, it has been found that the dried laundry often accumulates electrostatic charges; which caused harmful hooking, hampering normal handling and folding of the laundry for storage. It has been known for years that cationic compounds such as quaternary ammonium salts, for example di- (higher alkyl) di-lower alkyl ammonium halides, are capable of acting as antistatic agents (anti -stats) by reducing the static charges on the fabrics and by preventing static snagging. During a softener blànchis-10, these halides are normally added to the rinse water during a wash cycle and not in a detergent composition or wash water, as they react chemically with anionic detergents which are the most frequently used detergents in synthetic organic detergent compositions. This reaction, which can be expected to be more serious in liquid detergents than in particulate products, would reduce the detergency of the detergent composition and could form undesirable reaction products which could deposit on the laundry. during washing, producing grease or dirt spots. In recent years, cationic compounds such as quaternary ammonium halides have been incorporated into enhanced detergent compositions, particularly particulate detergent compositions, in which they do not chemically detrimentally affect detergents. anionic during storage, but react to some extent with them in the wash water. Although such compositions exert an antistatic effect and reduce the static clinging of the washed laundry, it has been observed that the detergency of the compositions in which these compounds are present is lower than that of the base composition not containing the antistat. .

4 * '5 1i

In the U.S. patent application 674 194 and the corresponding French application 83 12 817 filed on August 3, 1983, describes the use of N- (primary alkyl) isostearamides as antistatic agents in detergent compositions, and it is indicated that these isostearamides do not react detrimentally with the anionic detergents in the compositions or in the washing water. In these applications, it is indicated that the isostearamides described can be combined with bentonite and used with detergent compositions in particles and give washing water having antistatic and fabric softening properties, so that the laundry washed with this water is flexible and free from unwanted static snagging. The present application describes in detail "liquid detergent compositions containing both bentonite and an antistat of the N-substituted isostearamide type, and it describes the advantageous effects which are obtained therefrom, which include obtaining washed laundry having satisfactory suppleness (in particular towels made of woven fabrics, or of another manufacture, coming from natural organic vegetable fibers, for example cotton and terry fabrics), obtaining washed linen having little or no adhesion static, better detergent power and the absence of stains of qua-ternary compound on the laundered laundry. One notices in particular the unexpected improvement of the antistatic effect of isostéaramide N- (primary aliphatic) which, due the presence of bentonite in the reinforced liquid detergent composition (in the presence of anionic detergent). In addition, there is no decrease in foaming power or decrease in the effects of brightening fluids. orescent when using the anionic detergent compositions of the invention containing bentonite and (coconut alkyl) isostearamide (CISA), while when using as antistats of quaternary ammonium salts, the foaming power is reduced, apparently due to the reaction of the quaternary salt with the anionic detergent.

In addition, the yellowing or similar alteration in color of the laundry by an antistat and the redeposition of soiling are reduced, compared with those resulting from the use, for any antistatic property to which it can contribute, of a halide d quaternary ammonium with an anionic detergent in other reinforced detergent compositions.

According to the present invention, an anti-static liquid fabric softening detergent composition comprises a proportion of detergent effect of a synthetic organic detergent, a proportion of softening effect of bentonite fabrics and a proportion of anti-static effect of a antistatic agent of the higher aliphatic isostearamide type, in an aqueous medium. Normally, the active detergent component of the detergent composition described is an anionic detergent (which is capable of reacting with a quaternary ammonium salt), and the detergent composition is a reinforced composition, containing a detergency builder for the detergent, by example of sodium tri-polyphosphate, sodium carbonate, NTA or a polyacetal-carboxylate, or other suitable detergency builder, or a mixture of such builders. In a preferred liquid detergent composition, the isostearamide is dissolved, emulsified or dispersed and the bentonite is present in the form of a dispersion in the finely divided state, its particles preferably being of a size less than 0.074 mm (mesh US No. 200), for example from 0.037 to 0.074 mm, as well as around 0.044 mm. If desired, bentonite and / or N-isostearamide can be added to the wash water before, after or at the same time as the rest of the components of the liquid detergent composition described.

at / * ? 6 ..v The synthetic anionic organic detergent of the present detergent compositions is normally made up of one or more lipophilic sulphated and / or sulphonated materials comprising an alkyl chain having 8 to 20 carbon atoms, preferably 10 to 18, and better still 12 to 16, and it is preferably a particular mixture of two types of such detergents. Although various water-soluble salt-forming cations can be used to form the desired soluble sulfated and sulfonated detergents, including ammonium, a (lower alkanol) amine (e.g. triethanolamine) and magnesium, a metal is generally used alkaline such as sodium or potassium and, very advantageously, this cation is sodium. Among the various anionic detergents which are useful in the practice of the present invention, the (linear higher alkyl) benzene sulfonates whose alkyl chain contains from 10 to 18 carbon atoms, preferably 12 to 16 and better still approximately 12 to 14, for example dodecyl and tridecyl, are considered the most suitable, often in combination with a salt of a polyethoxylated higher fatty alcohol sulfuric acid. The alcohol ether sulfate is normally derived from a higher linear alcohol (e.g. fatty) having 10 to 18, preferably 12 to 15, carbon atoms, and the degree of ethoxylation is generally 1 to 15 groups ethoxy per mole, preferably 2 to 10, better still 2 to 5, for example 3. Among other synthetic detergents, are also useful the monoglyceride sulfates, the (higher fatty alcohol) sulfates, the paraffin sulfonates and the olefin sulfonates , the alkyl group of all these compounds generally having 10 to 18 carbon atoms. Some of these alkyl groups may be slightly branched (which is not preferred), while still remaining within the described range of carbon chain length.

7

Although the benzene sulfonates (linear higher alkyl) and sulfated polyethoxylated higher alcohols, in the form of sodium salts, are the preferred anionic detergents used in the practice of the present invention, mixtures of such detergents can be used. with other sulfonates and sulfates of this type containing different cations, as well as mixtures of such detergents with others, such as (fatty alcohol) sulfates. In some cases, only relatively small or reduced proportions of the (linear alkyl) benzene sulfonates and polyethoxylates sulfates will be present, or the anionic synthetic organic detergent may be a mixture of other anionic detergents of the types described. Also, various very strong anionic detergents can be used, such as those which are well known in the art and which are described in various annual publications entitled McOtcheon's Deterges and Emulsifiers, for example that published in 1969.

Although the present invention is primarily directed to anionic detergent compositions having antistatic properties, the advantageous results mentioned herein can also be obtained with compositions containing other types of synthetic organic detergents, often with anionic detergents, for example. non-ionic and amphoteric detergents. The nonionic and amphoteric materials mentioned are normally present in minor proportions only, if they are present, and in general their proportion will be limited to half, at most, that of the anionic synthetic organic detergent. The preferred nonionic detergents are the condensation products of ethylene oxide and higher fatty alcohols, such as the condensation products of higher fatty alcohols having 12 to 18 carbon atoms with 3 to 20 moles of ethylene oxide, of n, 8 preferably the condensation products of higher fatty alcohols having 12 to 15 carbon atoms with 5 to 15 moles of ethylene oxide.

The detergent is preferably reinforced with a detergency builder so that it has greater cleaning power and should be suitable for "heavy duty" cleaning. Among the detergency builders useful for the compositions of the invention, mention may be made of polyphosphates such as sodium tripolyphosphate and tetrasodium pyrophosphate, sodium carbonate, sodium bicarbonate, sodium sesquicarbonate, sodium silicate (Na20: Si02 * 1.6 to 3.0, preferably 1: 2.4), NTA, sodium citrate, sodium gluconate, borax, other borates, zeolites, polyacetal-15 carboxylates and other detergency builders known in the art of detergents. Sodium silicates can often be suppressed because, in liquid media, they can react adversely with carbonate and zeolite used as detergency builders, and with bentonite, forming unfavorably thick or coagulated products or precipitates .

When zeolite-type detergency builders are used, these generally have the formula (^ 20,) ^. (Α ^ Ο ^) ^. (Si02) wf ^ O where x is 1, y is from 0.8 to 1.2, preferably about 1, z is 1.5 to 3.5, preferably 2 to 3 or about 2, and w is 0 to 9, preferably 2.5 to 6. These zeolites are cation exchangers and have a calcium ion exchange power of about 200 to 400 milligrams -equivalents or da-30 vantage of hardness reduced to calcium carbonate per gram. They are very often hydrated at a rate of 5 to 30% of humidity, preferably from 10 to 25%, for example around 20%. Zeolite A is preferred (X and Y are also useful) and, for this zeolite, type 9 4A is particularly preferred. The particle sizes of the zeolite (s) are generally 0.037 to 0.149 mm (U.S. mesh 400 to 100), preferably 0.044 to 0.074 or 0.105 mm, but their final dimensions will be less than a micrometer.

5 The various zeolites are described in detail in the book Zeolite Molecular Sieves, by Donald W. Breck, published in 1974 by John Wiley & Sons, in particular at pages 747-749.

When polyacetal carboxylates are present, they can be considered to be those described in US-A-4,144,226 and they can be manufactured by the process mentioned therein. A representative example of such a product is represented by the formula:

R, - (CHO) - R0 1, η Z

15 COOM

where M is chosen from alkali metals, ammonium, alkyl groups of 1 to 4 carbon atoms and tetraalkylammonium and alkanolamine groups which have from 1 to 4 carbon atoms in their alkyl moiety, n is on average equal to 20 At least 4, and and R2 are any chemically stable groups which stabilize the polymer against rapid depolymerization in alkaline solution. Preferably, the polyacetal carboxylate is one of those in which M is an alkali metal, for example sodium, 25 n is between 20 and 200, R ^ is represented by:

ch3ch2o MOOC

HCO- or H3C-C0-.

H3C MOOC

or is a mixture of such groups, R2 is represented by: 30 OCH2CH3

-CH

and n is on average equal to 20-100, preferably 30-80. The average molecular weights calculated by weight of the poly- 5

* S

9 10 mothers are normally between 2000 and 20,000, preferably between 3500 and 10,000, and better still between 5000 and 9000, for example around 8000.

Although the preferred polyacetal carboxylates have been described, it is obvious that they can be replaced totally or partially by other polyacetal carboxylates of this type or by related organic detergency builder salts described in the various patents of Monsanto regarding these compounds, methods of making them and compositions using them. Also, the chain termination groups described in the Monsanto patents in question, in particular US-A-4,144,226, can be used, provided that they have the required stabilizing properties, which allow the adjuvants to detergency mentioned to be depolymerized in acidic media, which facilitates their biodegradation in waste streams, but maintain their stability in alkaline media such as washing solutions.

When it is desired to avoid the presence of phosphorus in the detergent composition, the polyphosphate-type detergency builders can be omitted from the present formulations, in which case it is preferable to use other phosphate-free detergency builders, such as those mentioned here. Combinations of zeolite and polyacetal carboxylate are very useful substitutes for detergency builders, of the polyphosphate type, and these combinations, combined with N-alkyl isostearamides in detergent compositions (but without bentonite), are described in US Patent Application No. 674,899 entitled "Antistatic Built Synthetic Organic Detergent Composition", filed by Gary M. Freeman on November 26, 1984. The sodium salts of these detergency builders are preferably used, 11

K

·, But they can be replaced at least partially by alkali metal salts and other soluble salts.

Electrolytes and fillers may be present in the liquid detergent, for example sodium sulfate (preferred) and sodium chloride, to modify its physical characteristics and add an electrolyte to the product and to the wash water when necessary. considered desirable, and they can also be used for other functional purposes.

The antistatic agent of choice in the practice of the present invention is N-copra-isostea ramide. This antistatic agent is an amide which can be derived chemically from isostearic acid and copraamine by the condensation reaction indicated below: 15 0 0 RCOH + R'NH2- ^ RCNHR '+ H20 0

H

Isostearic acid, RC-OH, is a saturated fatty acid of the formula C ^ H ^ COOH, which is a complex mixture of isomers, mainly of the methyl branched series, which isomers are mutually soluble and practically inseparable. Although such an acid has uses analogous to those of stearic or oleic acids, it is considered to be much superior to these materials for the manufacture of effective antistatic agents, which are suitable for incorporation in liquid detergent compositions, based on anionic synthetic organic detergent, of the applicant. The copraamine is an aliphatic amine in which the aliphatic group is derived from coconut oil. It is also possible to use other primary aliphatic amines, preferably (higher alkyl) amines having 7 to 18 carbon atoms in the alkyl fragment, for example R'NH2, where R 'is such a higher alkyl group, but the 12 copra-amine produces an N-alkyl-isostearamide with the best properties for incorporation into detergent compositions. This isostearamide is called CISA.

Although CISA is the most preferred antistatic agent, the invention contemplates, in its broader aspects, the use of other N-aliphatic isostearamides such as those derived from primary aliphatic amines containing up to to 20 carbon atoms, preferably 7 to 18 carbon atoms, the aliphatic portions of which may or may not be hydrogenated, provided that the amides obtained have a sufficient antistatic effect in the use described. Some examples are N-alkylisostearamides of 7 to 18 carbon atoms, for example, 15-pie of N-decylamine, N-octylamine and those derived from N-tallow-amine. However, it is considered that CISA is the most interesting of the N-alkylisostearamides with regard to antistatic activity and, therefore, when using the other isostearamides, this use will preferably be made with CISA, and the proportion of or of the other isostearamides will preferably be minor, compared to CISA. In some cases, the hydrogen atom of the amide nitrogen can be replaced by suitable radicals, for example lower alkyl, such as methyl, provided that the desired antistatic effect is still obtained, but found that tertiary isostearamides generally have little antistatic activity.

The bentonite used is preferably a ben-tonite from Wyoming or from the West of the United States of America having a swelling power of 3 to 15 ml / gram, preferably from 7 to 15 ml / g, and its viscosity , at a concentration of 6% in water, is generally from 3 to 30 mPa.s, preferably from 8 to 30 mPa.s. Useful swelling bentonites of this type are sold under the trademark 5 ‘13 i k

Mineral Colloid, as industrial bentonite, by Benton Clay Company, a subsidiary of Georgia Kaolin Co. These materials were previously marketed under the trademark THIXO-JEL by this company. These are 5 selectively mined and enriched bentonites, and those which are considered to be the most useful are available under the designation Minerai Colloid 101, etc., and correspond to those previously sold under the trade marks THIXO-JEL N ° 1, 2, 3 and 4. These materials have pH (concentration of 6% in water) of 8 to 9.4, a maximum free moisture content of approximately 8% and densities of approximately 2.6, and for the pulverized quality, a proportion of approximately 85% passes through a 0.074 mm mesh screen (US No. 200). A bentonite equivalent to this bentonite is that sold under the name of Bentonite Clay AEG 325 by American Colloid Co., which has essentially a dimension of 0.044 mm (U.S. mesh

N ° 325).

Enriched Wyoming bentonite is preferred as a component of the compositions of the present invention, but other bentonites are also useful, particularly when they constitute only a minor proportion of the bentonite used. It has been found that at least about 2%, preferably at least 4%, and more preferably 5% or more, up to about 8%, of water must be present in the bentonite from the start, before it is mixed with the other components of the beads and with the liquid medium intended for the liquid detergent. It has been established that over-drying to the point where the bentonite loses its "internal" moisture can greatly impede the ability of the bentonite to hydrate effectively in an aqueous medium, and can greatly reduce the action of tissue softening exerted by the compositions of the present invention.

Λ Λ t * 14

Among the various additives which may be present * in the liquid detergents of the invention, mention may be made of dyes such as soluble or colloidal dyes and pigments, perfumes, enzymes, stabilizers, thickeners, solvents, dispersants, activators, fluorescent brighteners, bleaches, buffers, fungicides, germicides, foaming agents, defoamers and flow promoting agents. Among the additives, detergency builders and fillers, there may be mentioned, unless they belong to classes other than those mentioned, various other components or impurities which are sometimes present in the components of the compositions. For example, it is known that sodium carbonate and water are often present with polyacetal-carboxylate in Builder U, a product which is a current source of polyacetal-carboxy-late.

The proportions of the essential components of the detergent compositions are such that they make them effective for the purposes for which the compositions are intended. Thus, the synthetic organic detergent or the mixture of such detergents is present in the liquid detergent in a proportion with a detersive effect, the bentonite is present in a proportion with a softening effect on the tissues and the higher antistatic aliphatic isostearamide is present in a proportion with antistatic effect.

In the case where there is a detergency builder or a mixture of such builders, as is the case in most of the detergent compositions of the present invention, it is present in a detergency-boosting proportion.

The proportions described are normally 3.5 "to 25% of the liquid detergent, preferably 3 to 15% of (linear higher alkyl) sodium benzenesulfonate, and more preferably about 5 to 13% of this, for example about 9% of sodium (linear alkyl) benzene sulfonate having 12 to 13 or 14 carbon atoms, with 0.5 to 10% of (higher fatty alcohol) -polyethoxy ether sulfate 5 sodium in which the alcohol has 8 to 18 carbon atoms and the polyethoxyether has 1 to 15 moles of ethylene oxide per mole, preferably 1 to 5% of (higher primary alcohol) polyethoxy ether sulfate sodium having 12 to 15 carbon atoms in the alcohol moiety and 2 to 4 or 6 moles of ethylene oxide per mole, for example about 2%. The detergency builder for the liquid detergent, which may be a mixture detergency builders, normally constitutes 5 to 40% of the composition, often preferably it is a combination of 5 to 25% of tripolypho sodium sphate and 2 to 10% sodium carbonate, and better still it is a combination of 8 to 14% sodium tripolyphosphate and 3 to 7% sodium carbonate, for example about 11 % and 4% respectively. Bentonite normally constitutes 3 to 20% of the liquid detergent composition, preferably 5 to 20 and better still approximately 5 to 15%, for example approximately 12%, the antistate of the isostearamide type normally constituting 1 to 10% of the liquid detergent composition, preferably 1 to 7% thereof, and more preferably about 3 to 7%, for example about 5%. The water or aqueous medium content of the liquid detergent is generally from 3 to 80%, preferably from 40 to 70%, better still from about 45 to 65%, for example about 55%.

In the liquid detergent composition, the ratio of the bentonite to the antistat is generally from one part of antistat to 1 to 20 parts of bentonite, preferably from 1: 1.5 to 4, and better still from 1: 2 to 3, for example 1: 2.4.

To make the liquid detergent compositions of the invention, the various components of the final product are normally simply mixed together and agitated or otherwise subjected to sufficient agitation to produce a uniform liquid product. The order of addition of the components can be determined so as to promote optimal mixing. The amount of liquid medium will normally be sufficient at all times to avoid solidification of the solids with an insufficient proportion of liquid, and in order to prevent the formation of lumps which could subsequently be difficult to disperse. The finely divided particulate components, both soluble and insoluble, are generally mixed with part of the aqueous medium, and then the rest of the aqueous medium is used to dilute the mixture, according to normal manufacturing techniques.

The mixture can be subjected to a passage through a homogenizer in order to facilitate the dispersion of the components and to avoid their separation and, in certain cases, the composition can contain hydrotropic materials such as cumene sulfonate. sodium and sodium xylene sulfonate, normally in small proportions, for example up to about 1 or 2%, in order to help the liquid composition to maintain its homogeneity. Similarly, solvents such as ethanol and ethylene glycol or other suitable glycols can be used to dissolve the components of the composition, and these solvents also help to avoid freezing of the product when subjected to cold weather conditions.

The various solid components of the liquid detergent composition which are used are normally in the form of finely divided particles, in order to promote easy dissolution (when soluble) or easy dispersion in the aqueous medium. In general, powdered materials have particle sizes less than 0.074 or 0.105 mm, and normally these particle sizes are between 0.037 and 0.105 mm, often and preferably between 0.037 and 0.074 mm, for example about 0.044 mm. With readily soluble components such as sodium carbonate, sodium tripolyphosphate and synthetic organic detergents, the particle sizes may be at the upper ends of the indicated ranges, or even above, but for insoluble or dissolving materials slowly, such as zeolites and clays, smaller particle sizes are generally more advantageous.

In accordance with the present invention, the laundry is washed with a liquid detergent composition described in washing water, and this laundry of the laundry is easily carried out according to normal laundry processes, using conventional equipment and at v normal washing concentrations or liquid detergent compositions, and washing gives a clean cloth which is soft to the touch and does not exhibit annoying static latching even in the case where there are significant proportions of synthetic materials such as polyesters, for example Dacron, and polyamides, for example Nylon. The washing water used can be normal city water and the detergent compositions of the invention are effective even in the case of a hardness as high as 300 ppm, expressed as calcium carbonate, and sometimes even superior. Normally, the hardness of water is a mixed hardness due to magnesium and calcium ions, most of which is usually calcium. Preferably, the wash water has a hardness of not more than 250 ppm and the normal city water used has hardnesses of 20 to 150 or 200 ppm, for example about 50 or - 100 ppm. The compositions of the present invention can be used with wash water at any temperature (10 to 90 ° C) and are effective even with wash water at lower temperatures, for example around Room temperature. According to European practice, the compositions can be used in washing waters at temperatures close to boiling, for example from 70 to 90 ° C., but in American practice, lower temperatures are used. Particularly good results are obtained, according to American washing practice, by using the compositions of the present invention in washing waters at temperatures of 10 to 50 ° C, preferably 30 to 50 ° C, for example d '' about 40 ° C. The concentration of the detergent composition in the washing water can be varied as the case may be, but normally it is from 0.1 to 0.5% by weight, preferably from 0.1 to 0.4%, and more preferably from about 0.15 to 0.25%, for example about 0.2%. Thus, half a scoop or 145 g of the liquid detergent, often with a specific gravity of about 1.1 to 1.3 g / ml, for example 1.2 g / ml, can be used in a washing machine. wash containing about 65 liters of water, to wash a normal load, which is about 2.7 to 4.5 kg, for example about 3.6 kg of dry laundry. In some cases, for example if it is desired that the liquid detergent be used in larger or smaller volumes per wash load, the concentrations of the components in the liquid composition can be increased or reduced accordingly, within practical limits .

Conventional household washing machines can be used and the normal washing cycles of such machines, or washing machines can be used for industrial or commercial use. Washing of the linen is carried out in a normal cycle over a period of approximately 2 to 30 minutes, for example 5 to 20 minutes, for example approximately 10 minutes, depending on the degree of soiling of the linen and s t 19 the nature of the fabric. At the end of the washing cycle, the laundry is rinsed automatically, and: it is then dried in an automatic clothes dryer in which it is tumbled while being subjected to the passage of drying air.

5 Instead of a liquid detergent containing the

all the detergent, adjuvant, fabric softener and antistatic components of the composition of the invention, it is possible, according to a variant of the present invention, to make a liquid composition containing the antistatic and fabric softener components and this composition can be used together with a suitable liquid detergent, for example any of the products of this type sold on the market, to impart to the laundry washed with such a detergent anti-static and fabric softening properties. So CISA

or other suitable N- (higher aliphatic) isostearamide and bentonite (or other suitable tissue softening clay) can be dispersed emulsified suspended and / or partially dissolved in a suitable, preferably aqueous, liquid medium with a minor proportion of hydrotrope, emulsifier, suspending agent and / or solvent to produce a suitable pourable liquid preparation which can be used in addition to the liquid detergent. This liquid preparation can be added to the liquid detergent beforehand and / or it can be added to the washing medium at the same time as the liquid detergent, or it can be added to the compositions of the present invention or to water. washing with such compositions in order to further improve the suppleness and the antistatic properties of the washed linen. By using the complementary antistatic and fabric softening composition, the present invention can be adapted to the use of any liquid detergent formulation. Thus, we leave to the consumer-

'7 J

20 the ability to judiciously determine the degree of antistatic and softening effects which should be imparted to the laundry and it is possible to use more complementary composition when using detergent compositions which are particularly strong detergents (or harsh ), requiring greater flexibility and more antistat. Normally, in the liquid complementation compositions described, the proportion of fabric softener and combined antistat 10 present is from 10 to 30 ÿ, but a proportion of 10 to 50% is possible, in particular in the presence of a co -solvent such as ethanol. The ratio of the antistat to bentonite is within the same range (s) as previously indicated for the described liquid detergent compositions containing both an antistat and a fabric softener.

Various advantages of the invention, some of which have already been mentioned, will be clearly illustrated in the working examples which follow. The antistatic isostearamide N-20 (primary aliphatic) does not react adversely with bentonite or with anionic detergents, and therefore the compositions of the present invention are comparatively stable on storage and do not significantly lose their detergent, softening and anti-static properties during storage or before or during use. Unlike compositions based on cationic fabric softeners and commonly used fabric softeners such as quaternary ammonium salts, the compositions of the present invention do not deposit reaction products of such cationic materials and anionic detergents on the laundry during washing, so that the laundry is not as subject to a deposit of soiling during washing operations when using "21. e the present invention. The detergent compositions of the invention provide whiter laundry and also produce less soil redeposition, while laundry washed with compositions containing an anionic detergent and a quaternary ammonium salt (in proportions having antistatic effects and softening of the tissues), tends to turn yellow, especially after repeated washing. The detergency is significantly better with the compositions of the present invention than with compositions containing a quaternary ammonium salt in place of isostearamide. Also, an influence on the foaming power of the anionic detergent, which is generally observed in the presence of cationic compounds, such as quaternary ammonium salts, is avoided, and reactions of these quaternary compounds with agents are avoided. fluorescent brightening, and the decrease in brightening laundry that results when using the antistats of the present invention. These undesirable interactions of anionic and cationic materials are particularly serious and detrimental when both anionic detergents and cationic softener and antistatic compounds are present for relatively long periods in intimate contact, as is the case when they occur. are found in the same aqueous medium, for example in certain anionic liquid detergents which soften fabrics. It is obvious that the present invention represents an important improvement in the art of detergents, in which, at present, it is important that the detergent compositions have antistatic and fabric softening properties, in addition excellent detergent power.

The liquid detergents of the present invention and the complementary liquid compositions described above - "- 22; above are all preferably viscous or thixotropic enough to maintain finely divided particulate components in suspension and to avoid separation during storage, however liquids must be able to flow freely through the dispensing opening of a relatively narrow neck. It has been found that liquids having viscosities of 1000 to 5000 mPa.s generally do not separate and that they have the desired flow characteristics. Consequently, the liquids of the present invention advantageously have a viscosity within this range. More preferably, this interval can be from 3000 to 5000 mPa.s, or for example around 4000 mPa.s, at room temperature (25eC). Although the viscosities of the present compositions are considered to be comparatively stable, it has been established that relatively small variations in industrial manufacturing operations and changes in storage conditions can affect the viscosity of the product, which most often increases, rather than decreases, during storage. If the viscosity or thickness increases excessively, it will usually be seen that shaking a rack of conditioned bottles will almost always make the composition capable of pouring from the bottle and will disperse any components which may be present. 'be separated.

The following nonlimiting examples illustrate the invention. Unless otherwise specified, all parts are expressed by weight and all temperatures in ° C.

. t 23, · Example 1.

Components Percent (Linear Tridecyl) sodium benzene sulfonate 9.0 5 (Primary higher alcohol) sodium ether sulfate * 2.0

Bentonite (American Colloid Company AEG 325) 12.0

Sodium tripolyphosphate 11.0

Sodium carbonate 4.0 10 N- (coconut alkyl) -isostearamide 5.0

Optical brightening agent (Tinopal LMS X (CIBA GEIGY)) 0.3

Carboxymethyl cellulose sodium 0.2

Titanium dioxide 0.5 15 Coloring pigment (ultramarine blue) 0.2

Colorant (Polar Glossy Blue, 1% aqueous solution) 0.6

Perfume 0.5

Deionized water 54.7 20 100.0 * Primary alcohol reaction product having 12 to 15 carbon atoms and 3 moles of ethylene oxide per mole.

The detergent components are dissolved in 2/3 of the water, then CISA is dispersed and dissolved in the detergent solution thus prepared, and the detergency builder salts are dissolved in this aqueous medium, after which the bentonite is dispersed under form of finely divided particles in the composition, then additions of the various additives and the rest of the water are carried out. The resulting product has a viscosity of about 3000 mPa.s at 25 ° C as determined using a Brookfield viscometer using a No. 3 spindle at a speed of 12 rpm. The detergent composition is stable, its components remaining dissolved, dispersed in the aqueous medium and not separating by deposition or otherwise.

A 3.6 kg load of mixed fabric of various materials (polyester, nylon, acetate and polyester-cotton blend) was washed in a conventional General Electric top loading washing machine containing 65 liters of water having a hardness of 100 ppm, expressed as calcium carbonate, the mixed hardness of which consists of calcium and magnesium ions, using 145 g of the liquid detergent composition having the above formula, and the washed linen is rinsed , comprising test pieces of the various materials mentioned, and then dried in an automatic tumble dryer of the drum drying type. The flexibility of the fabrics washed by experienced personnel is evaluated and the protection given to each of the fabrics against an electrostatic charge generation (and annoying static snag) during drum drying and other movements is also evaluated. noting the degree of static bonding present by the individual articles. The washed linen is of a satisfactory suppleness and does not hang.

Quantitative measurements of the accumulations of electrostatic charge are obtained by the different fabrics washed and dried by rubbing each of the 25 fabrics in a controlled manner with wool at a low relative humidity (25 to 30%) and by measuring the charges accumulated by the pieces. . In this test, several pieces are used and the average values for each material are calculated. To obtain an antistatic index, representing an evaluation of the seemingly antistatic power of a liquid detergent composition, it has been found that it was judicious to use the sums of charges accumulated on the materials mentioned. Thus, this sum for the liquid detergent of the present invention is 12 kilovolts, while for a detergent. en 25 Ξ. control liquid of the same formula, but not containing bentonite or CISA, the index is 48 kilovolts. For the present tests, values greater than 35 kilovolts are generally unacceptable (the laundry hangs in a disturbing manner). When the flexibility (the washed test articles being terry towels) is evaluated by a jury of persons experienced in this property of the linen, the towels washed with the liquid detergent composition of this example according to the pro- 10 assigned described above are rated 9 for flexibility on a scale of 1 to 10, 10 representing the highest degree of flexibility. Towels washed in the same way with the control composition are rated 1.

In other tests carried out, the degree of rede-15 position of the dirt on the washed linen has been shown to be roughly the same with the product of the invention as with a second control product, which corresponds to the formula indicated. of the invention, with the difference that the N-alkyl-isostearara-mide is replaced by water, and this redeposition is greater in the case of a third control detergent composition, analogous to the composition of the invention with the difference that isostearamide is replaced by the same proportion of dimethyldistearyl ammonium chloride.

The clothes and the test linen washed with the product of the invention do not show stains of quaternary compound, which is sometimes observed on linen washed with compositions of similar formulas containing dimethyldistearyl ammonium chloride or other quaternary compound in place of the isotearamide used as an antistatic. Also, the optical brightening effect for the product of the invention containing isostearamide is greater than that of a similar product in the formula in which the isostearamide is replaced by dimethyldistearyl ammonium chloride or other halide of 26 r quaternary ammonium antistatic of this type. Another advantage of using CISA instead of the quaternary compound is an improvement in the appearance of the liquid detergent composition due to the absence of any precipitated product from the reaction of the quaternary compound and the anionic detergent.

When in the indicated formula of the product of the invention, the 5% of N- (coconut alkyl) -isostearamide are replaced by 1%, 3% and 7%, respectively, of this isostearamide, the flexibility estimates of the products results are 8, 8 and 9 respectively, and the static indices are 27, 19 and 10 respectively. Flexibility indices of 8 or more are considered satisfactory, and static indices less than 30, with flexibility indices as low as 7 and static indices as high as 35, are sometimes considered acceptable. When CISA is removed from the formula, as in the second witness, the flexibility of the laundry is evaluated at 8 and the electrostatic charge index is 20 36 kilovolts.

When in practical tests on linen, the first control composition is compared with those of the invention, it is found that the control does not soften the linen properly and generates high electrostatic charges and an undesirable static bonding. When bentonite is removed from the formula of the compositions of the invention as in the fourth control, the detergent compositions are unsatisfactory with regard to the softening power and the inhibition of static bonding even in the presence of a comparatively proportion strong of isostearamide. When the isostearamide is removed, the static attachment of the washed laundry is still troublesome, despite the presence of 12% bentonite. Thus, it can be seen that the combination of bentonite 27 * ^ and N- (higher alkyl) isostearamide is important for the success of the laundry detergent compositions according to the present invention, because 1) this combination leads to obtaining a antistatic action greater than 5 that would be expected; 2) bentonite softens the laundry; and 3) both fabric softening and anti-static (anti-latching) properties are now demanded by discerning consumers for detergent compositions.

Instead of the preferred N- (coconut alkyl) isostearamide, other higher aliphatic isostearamides may be used, preferably primary higher aliphatic isostearamides, and more preferably N- (primary higher alkyl) -isostearamides, such as than Nn-octyl-isostearamide, Nn-decylisostearamide, Nn-heptyl-isostearamide, Nn-dodecylisostearamide, Nn-tetradecyl-isostearamide and N- (primary hydrogenated tallow) -isostearamide.

When the bentonite content of the main formula indicated is changed by remaining in the range of 3 to 20%, for example by bringing it to 10%, 15% and 18%, useful softening and antistatic detergent compositions are obtained and even when the bentonite content is reduced to 5%, appreciable tissue softening can be achieved. Similarly, changes can be made to the proportion of anionic detergent, in the range of 3.5 to 25%, for example by bringing it to 5%, 15% and 25%, and the total proportion of salt. detergency builder can be changed in the inter-valle from 5 to 40 ¢, for example by bringing it to 10, 20 and; 30%, and effective softening and antistatic detergent compositions can be obtained. In all these compositions, water constitutes the remainder, except for the presence of one or more additives, which will be limited to b 28 τ generally at a maximum of 10%.

The bentonite used can be replaced by any bentonite of the other types mentioned previously in the specification, and sometimes other useful swelling clays can be used, such as other montmorillonites, but in general it is preferable to use a bentonite from the western United States of America or Wyoming. The (linear tridecyl) -benzene-sulfonate may be replaced in whole or in part by the (linear dodecyl) benzene-sulfonate or another (linear higher alkylJbenzene-sulfonate of 10 to 15 or 18 carbon atoms, or by another anionic detergent such as sodium lauryl sulfate, sodium cetyl sulfate, sodium paraffin sulfonate, paraffin having about 16 carbon atoms, and / or (coconut monoglyceride) sulfate sodium, or any of their various mixtures. The ether sulfate may be replaced by another similar detergent, such as sodium dodecyl-pentaethoxy sulfate, or by one or more of the anionic detergents previously Other detergency builders can replace polyphosphate and carbonate, for example those listed above, and non-phosphate detergents can thus be prepared.

According to the variants described in accordance with the invention, having the preferred main formula, the products obtained are anti-static detergent and softening compositions for useful tissues and are superior, as regards the properties described above, to formulations of which bentonite and isostearamide have been omitted and in formulations using quaternary ammonium salts in place of isostearamide.

Example 2.

Instead of manufacturing the detergent composition 0, ί 29 te r liquid antistatic and fabric softener described in the formula. Of example 1, an antistatic and fabric softener composition is prepared according to a variant of the present invention, which For convenience, the term "antistatic softener" comprising bentonite and an isostearamide N- (primary higher aliphatic) (CISA) in a liquid aqueous medium. Such a liquid composition is prepared by simply mixing 14.1 parts of AEG 325 bentonite from American 10 Colloid Company and 5.9 parts of N- (coconut alkyl) -isostearamide with 80 parts of deionized water (although water may be suitable if you do not have deionized water). The bentonite: isostearamide ratios of Example 1 can also be used. Due to the thickening action of the swelling bentonite, the powdered N-isostearamide is kept in suspension in the aqueous medium and the antistatic softener is ready for bottling, transport, storage, sale and use without other formula changes. However, a co-solvent such as ethanol or hexylene glycol may be included in order to promote the dissolution of N-isostearamide (and to act as antifreeze), in which case a sufficient proportion will be used, ie ethanol either hexylene glycol or both to promote solubility and prevent freezing. Also, about 1% sodium xylene sulfonate derived from hydrotrope may be included in the formula, with or without 0.1 to 2% sodium polyacrylate to distribute and / or suspend the bentonite in the system. aqueous. Similarly, colorants, antioxidants, buffers, gums, antireeposition agents (sodium carboxymethylcellulose), optical brighteners and fragrances can be included in the formula in normal proportions for these additives, most being less than 2% and often η 30 less than 11 The antistatic softener can be added either by the manufacturer or by the consumer to another liquid detergent composition in order to improve the antistatic and softening properties of a such composition. The proportion of the antistatic softener added to the liquid detergent is such that the added material exerts antistatic and fabric softening effects when the improved detergent composition is used. Due to the diluting effect of the antistatic softener, it is generally desirable to use more of the improved detergent composition. Alternatively, the concentrations of the active components in the antistatic softener will be kept as large as reasonably possible to obtain optimal antistatic and softening effects. Also, the liquid antistatic fabric softener can be added directly to the wash water in the washing machine, with the liquid detergent. By either of these methods of use, any of the various commercially reinforced anionic synthetic organic liquid detergent compositions can be improved in its antistatic and tissue softening effects. Likewise, the invention contemplates using the present liquid antistatic softener as a means for imparting antistatic and softening properties to laundry washed with any of the various synthetic detergent compositions, both particulate and liquid and not ionic or amphoteric than anionic. According to this aspect, the present invention can be used with all of the best commercial reinforced synthetic organic detergent products that are known and, as previously indicated, this improvement is not detrimental to the cleaning, brightening, and other properties. advantageous properties of such detergent compositions.

Example 3.

A washing proportion of the composition of the main formula of Example 1 is used to wash a normal load of laundry in a household top loading washing machine from General Electric. As a variant, a washing proportion (120 g) of a liquid detergent composition (like the first control, without bentonite or CISA) is added to the washing water, after which the following are added separately, according to the proportions of: formula, 17.6 g of bentonite and 7.4 g of N- (coconut alkyl) -iso-stearamide (which can be dispersed or dissolved in a suitable liquid medium or mixed with a suitable particulate support, and are preferably in 125 g of an antistatic softener ic, as described in Example 2).

* The machine is filled with 65 liters of city water with a hardness of about 100 ppm, reduced to calcium carbonate, of a mixed hardness due to magnesium and calcium, the hardness due to calcium being the main one. The washing water is at a temperature of 40 ° C and the load of dirty laundry in the washing water is approximately 3.6 kg.

The washed linen is made of cotton, cotton-polyester blend, acetate and polyamide (Nylon), and it is soiled by normal soiling. Washing is continued over a period of ten minutes, after which the laundry is rinsed automatically and spun by spin. It is then dried in an automatic clothes dryer in which it is tumbled while being subjected to the passage of hot drying air. After drying, the laundry is evaluated by a jury of experienced people and it is found that it has satisfactory cleanliness, that it is flexible to the touch and free from undesirable static clinging. When the control detergent composition, which does not contain bentonite or the N-substituted iso * * * 32 stearamide, is used in a similar manner. (but only) for washing identical laundry, its cleaning power is satisfactory, but the laundry is noticeably rough to the touch and is subject to static hanging, static hanging being particularly remarkable for articles which contain synthetic polymer fibers .

Example 4.

Instead of using the composition of Example 2 to improve a liquid detergent composition and instead of adding it to the wash water, it can also be used as an antistatic softener in the rinse water. In this embodiment of the invention, the liquid antistatic softener can be added to the water; 15 rinse after washing the laundry with a conventional detergent composition. Normally, the load of antistatic softener may be that which is sufficient to impart discernable antistatic and softening effects to the washed laundry. For example, normally, the load in the rinse water is 0.05 to 0.5, preferably 0.1 to 0.3%, for example 0.2%. In a representative example of this embodiment of the invention, the laundry is washed as described in Example 1 with a detergent composition similar to that of this example, except that the bentonite and CISA are replaced by water (a small proportion of gum or other thickener may have been added to the liquid to adjust the viscosity, if desired, for example 0.1 to 1% CMC, PVA (polyvinyl alcohol), PVP (polyvinyl-pyrro -30 lidone) or other gum known for this use. After washing the laundry, which can be a normal load of laundry made of mixed fabrics of cotton and synthetic polymer, the antistatic softening composition of Example 2, which contains 14, 1 parts of bentonite and 5.9 parts of / ► r 33 CISA in 80 parts of deionized water is added to the rinsing water at a concentration of 0.2% (130 grams per 65 liters of the water of 100 ppm hardness).

The laundry is then dried, sometimes after several rinses, and it is found that it has a low static charge after drying in the machine, and that it is more flexible than control laundry which has not been subjected to the rinse treatment described.

It goes without saying that the invention is not limited to the embodiments described and that it is capable of various variants without departing from its scope.

r! f)

Claims (20)

1. Liquid detergent antistatic and fabric softening composition for laundry laundering, characterized in that it comprises a proportion with detergent effect of an anionic synthetic organic detergent, a proportion with softening effect on bentonite fabrics and a proportion with antistatic effect of an antistatic agent of the isostearamide N- (higher aliphatic) type, in an aqueous medium. 2. Liquid detergent composition according to claim 1, characterized in that it contains a proportion with a detergency-enhancing effect of a detergency builder and in that the detergent is of the sulfate and / or sulfonate type (s). ^ 15 3. Liquid detergent composition according to claim 2, characterized in that the detergency builder - is chosen from detergency builders of the polyphosphate, carbonate, bicarbonate, sesquicarbonate, silicate, zeolite, citrate, nitrilotriacetate and polyacetal-talcarboxylate types , and mixtures thereof. 4. liquid detergent composition according to claim 3, characterized in that it comprises approximately 3.5 to 25% of sulfate and / or sulfonate as detergent, approximately 3 to 20% of bentonite, approximately 1 to 10% of isostéa -25 ramides, approximately 5 to 40% of detergency builder and approximately 30 to 80% of water. 5. Liquid detergent composition according to claim 4, characterized in that it comprises 3 to 15% of (linear higher alkyl) sodium benzenesulfonate, 0.5 to 10% of (higher fatty alcohol) polyethoxy-ether- sodium sulphate in which the upper fatty alcohol fragment contains 8 to 18 carbon atoms and in which the polyethoxy ether fragment contains 3 to 30 moles of ethylene oxide per mole of such a detergent, 3 to 20% of bento- ά ù ie 35 nite, 1 to 10% of isostearamide N- (higher aliphatic); in which the upper aliphatic group is a primary hydrocarbon chain containing 7 to 18 carbon atoms, 5 to 25% of sodium tripolyphosphate, 2 to 10% of sodium carbo-5 nate and 40 to 70% of water. 6. Liquid detergent composition according to claim 5, characterized in that it comprises 5 to 13% of (linear higher alkyl) sodium benzenesulfonate in which the higher alkyl group contains 12 to 14 10 carbon atoms, 1 to 5 % of (higher primary alcohol) -polyethoxy ether-sodium sulfate in which the upper primary alcohol moiety has 12 to 15 carbon atoms and the polyethoxy ether moiety has 6 to 20 moles of ethylene oxide per mole of such a detergent, 5 to 15% "15 of bentonite, 1 to 7% of N- (primary higher alkyl) iso stearamide where the upper alkyl group contains 7 to 18 carbon atoms, 8 to 14% of sodium tripolyphosphate, 3 to 7% sodium carbonate, 0.1 to 1% sodium carboxymethyl cellulose and 45 to 65% water. 7. Detergent composition according to claim 6, characterized in that it comprises approximately 9% of (linear higher alkyl) sodium benzenesulfonate in which the higher alkyl group contains 12 or 13 carbon atoms, approximately 2% of (alcohol primary) sodium polyethoxy-ether-sulfate in which the primary alcohol has about 12 carbon atoms and the polyethoxy-ether moiety has about 15 moles of ethylene oxide per mole of such a detergent, about 12% of bentonite, about 5% (coconut N-alkyl) isostearamide, about 30 11% sodium tripolyphosphate, about 4% sodium carbonate ~, about 0.2% sodium carboxymethylcellulose, about 1.5% additives and about 55% water. 8. Method for washing the linen and simultaneously softening it and reducing its ability to generate and / or maintain a static charge, characterized in that it consists in washing the linen in an aqueous medium containing a proportion of detergent effect of a liquid laundry detergent composition according to claim 1, of rinsing the laundry and drying it in an automatic laundry dryer. 9. Method according to claim 8, characterized in that the detergent composition is in accordance with claim 4 and its concentration in the washing water is from 0.1 to 0.4%. 10. Method according to claim 9, characterized in that the detergent composition is in accordance with claim 6, the water temperature is from 10 to 90 ° C, and the water has a hardness of at most 300 ppm expressed as carbonate calcium. v 15 11. Method according to claim 1, characterized in that the concentration of the liquid detergent composition in the washing water is approximately 0.2%, the washing water has a hardness of between 50 and 200 ppm, expressed in calcium carbonate, and the temperature of the washing water is 30 to 50 ° C. 12. Liquid antistatic and fabric softening product intended to be added to detergent compositions or to washing water to give the laundry washed with these compositions or washing water antistatic and softening properties, characterized in that it comprises a proportion with a softening effect on bentonite tissues and a proportion with an antistatic effect on an antistatic agent of the isostearamide N- (higher aliphatic) type in a liquid medium. 13. Product according to claim 12, character ized in that the bentonite is a swelling bentonite, the antistatic agent is an N- (higher alkyl) isos tearamide, the liquid medium is an aqueous medium and the isostearamide: bentonite ratio is 1: 1.5 to 1: 5. "Λ * 37 14. Product according to claim 13, character ized in that the bentonite is a bentonite from the western United States of America or from Wyoming, the isostearamide is an N- (coconut alkyl) isostearamide and the content to-5 pillowcase in isostearamide and bentonite is 10 to 30 15. Method for treating linen to soften it and reduce its power to generate and / or conserve an electrostatic charge, characterized in that it consists in treating the linen with a composition comprising a proportion with a softening effect of bentonite and a proportion with an antistatic effect of isostearamide N- (higher aliphatic). 1. 16. The method of claim 15, characterized in that the treatment is carried out in a rinsing operation after washing the laundry and in that the y bentonite and the isostearamide N- (higher aliphatic) 51 are in a liquid composition. 17. Method according to claim 16, characterized in that the liquid composition comprises approximately 1 20 to 10% of isostearamide N- (higher aliphatic), approximately 3 to 20% of bentonite and approximately 30 to 80% of water, 1 the N- (higher aliphatic) isostearamide is N- (coconut alkyl) isostearamide, and the proportion of the liquid composition in the rinsing water is 0.05 to 0.5%. 18. Liquid antistatic and softening composition suitable for being added to rinse water to soften the linen and make it antistatic, characterized in that it comprises approximately 1 to 10 parts of isostearamide N- (higher aliphatic) and about 3 to 20 parts of bentonite in an aqueous medium, the ratio of bentonite to isostearamide being from 1: 1 to 20: 1. ^ 19. Liquid composition according to claim 18, characterized in that the aqueous medium is water and the isostearamide is an N- (primary higher alkyl) iso-A * 38 -Λ. stearamide. 20. Liquid composition according to claim 19, characterized in that it comprises approximately 14 parts of bentonite and approximately 6 parts of N- (coconut alkyl) -5 isostearamide in approximately 80 parts of water. Destina: ...... boards ........ ia ... pages of which ....... j ....... guards ^ ........ 35 ... description pages i, ........- "claim pages ....... Ά ...... short description Luxembourg, le 2 7 jaiusîii The representative:; $ * Me Alain J ^ kavina. · ’Î y # ί /:; / I 'f | /,, ./ _ J J / J /