FI81376C - BENTONIT INNEHAOLLANDE, TEXTILUPPMJUKANDE, FLYTANDE TVAETTMEDELSKOMPOSITION. - Google Patents

Description

1 81376

Bentonite-containing, textile-softening, liquid detergent mixture

The invention relates to a high-performance liquid detergent composition for softening fabrics. More specifically, it relates to a liquid detergent containing components according to the preamble of claim 1. The product according to the invention has an improved, stable viscosity or consistency even after several months of storage, it is easily flowable and is a good laundry detergent and fabric softener.

High performance liquid detergents useful in machine washing of laundry have been marketed and described in various patents and literature. Bentonite has been used in fine detergent compositions as a fabric softener and used in aqueous compositions as a thickener that can help keep insoluble, fine materials such as abrasives suspended in a liquid medium. In U.S. Patent 4,469,605, bentonite has been successfully used in the manufacture of a satisfactory, permanent, fabric softening, high performance, liquid detergent in which bentonite forms a fabric softening component. It has now been found that the detergent composition described in this patent, although stable and relatively constant in viscosity during storage in the laboratory and in a test factory, often thickens on storage during factory production. The invention is thus mainly characterized by what is stated in the characterizing part of claim 1.

Thus, according to the present invention, the fabric contains a fabric softening, high performance liquid detergent having a density in the range of 1.15 to 1.35 g / ml at room temperature, a pH in the range of 9.5 to 11 and a viscosity in the range of 1000 to 5000 cP, which does not grows to greater than 5000-6000 cP when stored at room temperature for 30 days at rest at room temperature, 5-15% of an alkali metal salt of a linear or branched higher alkyl benzene sulfonate, this higher alkyl having 10-16 carbon atoms, 2 81376 1.5-5¾ alkali metal alkyl polyethoxysulfate wherein has 10-16 carbon atoms and polyethoxy has 2-11 ethylene oxide groups, 5-25¾ water-soluble enhancer salt, 5-20¾ swellable bentonite, 0.05-0.5¾ water-soluble polyacrylate with a molecular weight in the range of 1000-5000, and 40-75¾ water . The liquid detergent described is a commercially acceptable high performance laundry detergent capable of satisfactorily cleaning fabrics containing both oil and fine dirt, while at the same time depositing sufficient bentonite on such garments to adequately soften them. The described compositions can also be used for the pretreatment of heavily soiled areas, such as collars and cuffs, in washable laundry, where the presence of bentonite in the liquid, which can be added directly to the soiled areas while to some extent, is considered advantageous because it mechanically helps to remove and / or fix the problem.

The synthetic, anionic, organic detergent mixture in the liquid detergents of the invention is a mixture of linear or branched (preferably linear) higher alkyl benzene sulfonate and alkyl polyethoxy sulfate. Although other water-soluble linear, higher alkyl benzene sulfonates, such as potassium salts, and in a few cases ammonium and / or alkanol ammonium salts may also be used in the present compositions, sodium salts have been found to be most preferred, as is the use of alkyl polyethoxysulfate sulfate. The alkylbenzene sulfonate is one in which the higher alkyl has 12 to 16 carbon atoms, preferably 12 to 15, even more preferably 12 to 13, and most preferably 13 carbon atoms. An alkyl polyethoxy sulfate, which may also be termed a sulfated polyethoxylated higher linear alcohol, or a sulfated condensation product of a higher fatty alcohol and ethylene oxide or polyethylene glycol, is one in which the alkyl has 10 to 16 carbon atoms, preferably about 12 to 15 carbon atoms, e.g. , and containing 2-11 ethylene oxide groups, preferably 2-7, even more preferably 3-5 and most

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3,81376 most preferably 3 or about 3 ethylene oxide groups. Under suitable conditions, other anionic oesuers such as fatty alcohol sulfates, paraffin sulfonates, olefin sulfonates, monoglyceride sulfates, sarcosinates, sulfosuccinates and the like detergents may also be present. but they are usually used in addition to such detergents. Such other detergents are usually sulfated or sulfonated products (usually sodium salts) and contain long chain (8-20 carbon atoms) linear or fatty alkyl groups. In addition to such other or added anionic, synthetic, organic detergents, nonionic and amphoteric materials, such as Neodol ® sold by Shell Chemical Company, which are condensed with ethylene oxide and higher fatty alcohols, may be used.

Cr) reaction products such as Neodol w 23-6.5, which is the condensation product of a higher fatty alcohol containing about 12-13 carbon atoms with about 6.5 moles of ethylene oxide. Descriptions of the various detergents and the categories of detergents mentioned appear in the book "Surface Active Agents", Vol. II, Schwartz, Perry, and Berch (Interscience Publishers 1958), and in a series of publications entitled "McCutcheon's Detergents and Emulsifiers," for example, one published in 1969, the publications of which are incorporated herein by reference.

The builder salt combination of the present invention which has been found to satisfactorily improve the detergent effect of a mixture of synthetic, anionic, organic detergents which provides the desired pH of liquid detergent and wash water and which acts together with detergent and bentonite in the washing and softening process is sodium tripolyphosate. Although in a few cases incompletely neutralized tripolyphosphate may be used, the phosphate pentasodium tripolyphosphate Na 2 -P 2 O 2 Q is commonly used. It is natural that in a few cases, for example in the presence of potassium salts of other materials, ion exchange in an aqueous medium may result in the presence of salts other than sodium tripolyphosphate, but for the purposes of the invention it should be noted that sodium tripolyphosphate is the material normally used. is added to a mixing device to prepare a liquid detergent according to the invention.

Other preferred builder salts that may be used in place of or in addition to sodium tripolyphosphate and sodium carbonate include sodium citrate and potassium citrate and sodium nitrilotriacetate (NTA). The corresponding potassium salts can be used to partially replace these other enhancer salts. It is natural that various mixtures of said water-soluble effect salts may also be used. The described tripolyphosphate-carbonate mixture has been found to be the most preferred, although other enhancers and mixtures thereof are also useful. Other enhancers can also be used as additives in addition to the above-mentioned enhancers, and are described in more detail below. Thus, other phosphates such as tetrasodium p-pyrophosphate or tetrapotassium pyrophosphate, sodium bicarbonate, sodium sesquicarbonate, sodium gluconate, borax, sodium silicate and sodium sesquisilicate may be used. Also useful are the polyacetal carboxylate enhancers described in U.S. Patent 4,144,226 and other corresponding Monsanto Company1 patents, which are sold under the trademark "Builder U". Useful water-insoluble enhancers include zeolites such as "Zeolite A", usually in the form of a crystalline hydrate, although amorphous zeolites may also be used. According to one embodiment of the invention, it is not necessary to use sodium silicate for the preparation of a high-performance detergent-softener composition, and as a result such silicate is usually omitted from the compositions according to the invention and thus avoids the possible disadvantages. This avoids, for example, the tendency of the silicate to react with other ingredients of the liquid detergent, such as zeolite, sodium carbonate or some other enhancer, to form an insoluble material which may have a tendency to adhere to the laundry and thus adversely affect the desired bright color.

Il 5 81376

The absence of silicate in the detergent composition also prevents the formation of insoluble silicate-containing decomposition products of the silicate, which may adversely affect the appearance of the liquid detergent and the washed laundry, if this is visible in the liquid detergent or has precipitated on the washed clothes.

The benzene used is colloidal clay (aluminum 1 icate) containing montmorillonii. The type of bentonite most useful in making the spheres of the invention is what is called sodium bentonite (or Wyom or Western betonite) and is usually white to cream in color or may be a brownish, fine powder which can form a colloidal suspension in water with thixotropic properties. In many cases, potassium bentonite or a sodium-potassium bentonite mixture may also be used. The swelling capacity of such a clay in water is usually in the range of 3-15 or 20 ml / g, preferably 7-15 ml / g, and its viscosity at a concentration of 6% in water is usually 3-30 cp, preferably 8-30 cp. Inexpensive swellable bentonites of this type are sold under the trademark "Mineral Colloid" as industrial bentonites by Benton Clay Company, an important supplier to the industry of various clay grades. These products, which are the same as those previously sold under the trade mark "THIXO-JEL", are selectively dredged and processed bentonites, and those which are to be considered as the most useful are sold under the trade mark "Mineral Colloid No 101", etc., corresponding to the products "THIXO-JEL" Nos. 2, 3 and 4. The pH of these products (6% concentration in water) is in the range 8-9.4, the maximum free moisture content (before adding to the liquid detergent mixture) is 4-8% and the specific gravity is about 2.6. The ground grades of these products are such that at least about 85% of the product passes through a No. 200 (mesh) screen. Preferably, all of the bentonite passes through screen No. 200, and more preferably is sized such that all or substantially all of it passes through screen No. 325 so that the equivalent diameter of the bentonite particles can be considered to be less than 74 microns, and even more preferably about 44 microns or less. A suitable producer of fine-grained bentonite 6 81 376 of satisfactory color is the American Colloid Company, and of these Bento rivets, the one sold under the trademark "AEG 325" has been found to correspond to the above-mentioned products "Mineral Colloid" and "THIXO-JEL". Although processed Wyoming bentonite is most preferred as an ingredient in the liquid detergent compositions of the invention, other bentonites, such as synthetic bentonites (those made from bentonites containing calcium and / or magnesium by treatment with sodium carbonate) may be used and may be included in the invention. mixtures in accordance with Typical chemical analyzes of a few bentonites useful in preparing the liquid detergents of the invention show that they contain 64.8-73.0% SiO 2, 14-18¾ Al 2 O 4, 1.6-2.7% MgO, 1, 3 - 3.1% CaO, 2.3 - 3.4% Fe2 ° 3 <° '8 “2.8%

Na 2 O and 0.4 - 7.0% K90.

The use of bentonite as a fabric softener in the liquid detergent compositions according to the invention has the advantage that the bentonite does not have to be dried, for example in a spray dryer, and thus avoids the risk of losing the softening effect of bentonite due to over-drying of its particles. It is also unnecessary that the detergent composition of the invention has a composition that promotes rapid disintegration of detergent particles in the wash water and releases bentonite particles, since in a liquid detergent such particles do not agglomerate into hard masses that would require additional time to decompose.

The polyacrylate used is a low molecular weight sodium polyacrylate, usually having a molecular weight in the range of about 1000-5000, preferably 1000-3000 and most preferably 1500-2500, e.g. about 2000. The average molecular weight is usually in the range 1200-2500, e.g. 2000. Although other polyacrylates may sometimes be used in place of the sodium polyacrylates described as part of it, such as other alkali metal polyacrylates, it is preferred that such materials

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7,81376 are used to keep their use to a minimum, and the most preferred Dolyacrylate used is sodium polyacrylate. Such products are manufactured by Alco Chemical Corporation under the trademark "Alcosperse". Sodium oliacrylate and prepared as clear amber-colored liquids and powders, they are completely soluble in water, these solutions having a solids content of about 25-40%, e.g. 30%, and 30% aqueous solutions of such solutions or powders have a pH in the range of about 7.0 to 9.5. The most preferred such products are sold by Alco Chemical Corp. under the trademarks "Alcosperse" 104, 107, 107D, 109 and 149, with "Alcosperse" 107D, a powder containing 100% solids, being very preferred, although "Alcosperse" 107, 30% aqueous solution can also be used, giving slightly different results. Both are sodium polyacrylates, with the liquid (107) providing a pH range of 8.5 to 9.5 and the oH range of the powder (107 D) being 7.0 to 8.0 at a concentration of 30% in water.

The only other component of the liquid detergents of the invention is water. The hardness of such water should normally be less than about 300 ppm as CaCO 3 and preferably less than 150 ppm. It may often be desirable to use deionized water, although often tap water having a hardness of less than 50 or 100 ppm may be satisfactory. Although harder water can be successfully used in the preparation of the liquid detergents of the invention, it has been found that softer waters have a lower tendency to provide a few materials that may adversely affect the appearance of the liquid detergent or precipitate adversely on laundry or fabric during washing.

Various additives may be present in these liquid detergents for both aesthetic and functional reasons, such as fluorescent brighteners, perfumes, and dyes. Fluorescent brighteners include, for example, well-known stilbene derivatives such as cotton and nylon brighteners, for example those sold under the trademark "Tinopal", e.g. 5BM. Commonly used perfumes include, for example, essential oils, esters, aldehydes and / or alcohols, all of which are known in the art. As the colors, ordinary colors and various water-dispersible pigments, such as uitramarine blue, can be used. Due to the brightening effect of the use of bentonite in these liquid detergents, the colors of the product can often be pleasant pastel colors. Titanium dioxide can be used to further lighten or bleach the color of the product. Inorganic excipient salts such as sodium sulfate and sodium chloride may also be present, as well as anti-redeposition agents such as sodium carboxymethylcellulose, enzymes, bleaching agents, preservatives such as antibacterials, fungicides, antifoams, antifoams, such as , such as laurine-myristine-diethanolamide, and co-solvents such as ethanol. The amounts of such additives are usually less than 3%, often less than 1% and sometimes even less than 0.5%, with the exception of some fillers, solvents, auxiliary detergents and builders, which can sometimes be as high as 10%. The total amount of additives, including synthetic detergents and builders not mentioned above, is generally not more than 20% of the total product, and is preferably less than 10% and even more preferably less than 5% thereof.

It is natural that the additives used should be such that they do not affect the washing and softening properties of the liquid detergent and do not contribute to the instability of the product when standing. They must also not cause harmful deposits on the clothes to be washed.

The amounts of the various ingredients in the liquid detergent of the invention are in the range of 5-15, preferably 6-12%, even more preferably 8-10% and most preferably about 9%, linear higher sodium alkyl benzene sulfonate. 1.5-5%, preferably 1.5-3%, even more preferably 1.7-2.7% and most preferably about 2% sodium alkyl polyethoxysulfate, 5-25%, preferably 9-22% and even more preferably about 12-19 % enhancer salt, 5-20%, preferably 8-15%, even more preferably 10-14% and most preferably about 12% swellable bentonite, and 40-75%, preferably

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9 81,376 50-70%, more preferably 55-70% and most preferably about 60% water. When sodium tripolyphosphate and sodium carbonate are used as enhancer salts, they are usually present in an amount of 7-15%, preferably 9-13% and even more preferably about 11% of tripolyphosphate, and 2-7%, preferably 3-6% and even more preferably about 4% of sodium carbonate. . The ratio of tripolyphosphate to carbonate is in the range of 2: 1 to 6: 1.

The liquid detergents according to the invention can be prepared by suitably mixing the various ingredients together, preferably by adding bentonite to a premix containing most of the water and tripolyphosphate, carbonate, CMC and an anionic detergent. For example, polyphosphate and carbonate in finely divided form, generally such that they pass through screen 160, may be mixed with and dissolved in the bulk of the water, after which CMC and anionic detergent may be added, followed by bentonite, polyacrylate and the remainder of the other ingredients in appropriate order. . The rest of the water is then added to the residue of the liquid detergent and the thickened liquid then thins to the desired viscosity.

Experience has shown that the desired amount of residual water that is last mixed in the manufacturing process is generally 5-20% of the final liquid detergent, for example about 10% of it. When mixing the various ingredients with an aqueous medium, and especially when adding bentonite and mixing the rest of the water, it is important to keep the mixture in motion by constantly stirring it. It is preferred that the mixing device not be stopped and that the process be continuous, usually lasting about 3 to 30 minutes per dose. Although water may be heated to promote dissolution of the various components of the product and to facilitate dispersion of the bentonite, this is not necessary, in which case room temperature water may be used, for example water having a temperature in the range 15-30 ° C, e.g. 20-25 ° C.

The viscosity of the liquid detergent according to the invention immediately after the end of the manufacturing process is generally in the range of about 1000-2000 cp, e.g. about 1500 cd. The liquid detergent is packaged and marketed in relatively narrow-necked glass or plastic bottles and must be pourable from these bottles even after normal storage. Excluding the polyacrylate from the composition, it has been found that a commercially prepared liquid detergent is initially thicker and becomes even more viscous on standing, so that after about a month of storage at room temperature, its viscosity may have increased from about 3000 cp to over 18,000 cp. At 18,000 cp, the liquid detergent is too thick to be satisfactorily poured out of the bottle and must be shaken or mixed by the user so that it thins sufficiently and can be poured out of the bottle. Such thickening is naturally harmful. The preferred viscosity of the liquid detergent of the invention is about 4000 cp + 1000 cp, and these viscosities have been found to be preferred by users. When using the polyacrylate component of the invention and compositions containing it, as shown, for example, in Example 1, it has been found that after about one month of storage, the viscosity has increased to about 4000 cp (4050 cp after 28 days) and no additional viscosity increases. Viscosities shown are measured using a "Brookfield LVT" viscometer and spindle # 2 with viscosities less than 2000 cp, and spindle # 3 with a viscosity in the range of 2000-9000 cp, and spindle # 4 with viscosities above 9000 cp. . All viscosities were measured at 12 rpm at 25 ° C.

The following examples illustrate but do not limit the invention. Unless otherwise stated, all parts are by weight and all temperatures are in degrees Celsius also in the Preparation Examples and claims.

Il 11 81376

Example 1

Ingredients Percent

Linear sodium tridecylbenzenesulfonate 8.8

Sodium alkyl polyethoxysulfate (alkyl = linear alkyl having 12 to 15 carbon-2.2 atoms, polyethoxy = 3 ethoxy groups)

Pentasodium tripolyphosphate 11.0

Sodium carbonate (anhydrous) 4.0

Sodium carboxymethylcellulose 0.2

Sodium kneyl acrylate (mp = 2000) 0.15

Titanium dioxide 0.5

Formal in 0.2

Bentonite (325 mesh, American Colloid Co.

325 AEG) 12.0

Fluorescent clarifier / "Tinopal LMS-X" (Ciba-Geigy 0.3

Scatter 0.4 Color (CI "Acid Blue" 9 / CI 42090) 0.0045

Pigment (CI "Pigment Blue" 29 / CI 77007) 0.04

Water (deionized) 60.7055 100.0

About 84% of the water used in the mixture is added to a suitable mixer, for example a vertical, cylindrical tank equipped with heating and cooling devices connected to an outlet pump, then mixed (Lightnin type mixer) with the required polyphosphate and carbonate (particle size less than 160). mesh), followed by CMC, and then anionic detergents and then other ingredients are added in the appropriate order. An amount of residual water is then added to dilute the mixture, followed by the perfume, and the product is ready to be pumped out of the mixing device and filled into narrow-necked bottles that act as dispensing containers. During the mixing treatment, which lasts a total of 9 minutes, the temperature of the added materials and the final product is about 20 ° C. In a few cases, the temperature of the water and other ingredients can be raised to 40-50 ° C so that the temperature of the final product is about 30-40 ° C to reduce the dissolution and addition of the ingredients, thereby reducing the mixing time to about 5 or 6 minutes.

The resulting liquid detergent (room temperature) has a viscosity of about 1550 cp and runs satisfactorily from plastic detergent bottles with an outlet diameter of about 2.5 cm.

Its pH is about 10.5. This liquid detergent is used for washing dirty laundry, consisting of pieces of cotton cloth and pieces of polyester / cotton cloth soiled with fine dirt and sebum. The liquid detergent is added to a conventional washing machine using about 1/2 cup of liquid detergent per wash dose (the concentration of liquid detergent in the wash water is about 0.18%). The temperature of the wash water is 21 ° C (to evaluate the washability of the product in cold water) and the sum of the calcium and magnesium hardness of the water is about 150 ppm calculated as CaCO 2. After washing, the fabric pieces are dried either with a string or mechanically (in a conventional drying lathe).

The treatments described above are repeated using a reference detergent in which the sodium polyacrylate has been omitted and replaced with water.

Both the tested mixtures (containing sodium polyacrylate) and the reference mixture are excellent fabric softening detergents, but the former product is in some respects superior in that it maintains a satisfactory viscosity during storage. Thus, after 5 days, the viscosity of the tested product was 2580 cp, while the viscosity of the reference product was 9400 cp, after 14 days the viscosities were 3400 cp and 13,500 cp, after 21 days 3500 cp and 14,500 cp, respectively, and after 28 days 4050 cp and 18,500 cp. At 4050 cp the product is still pourable out of the bottle, but at 18 500 cp it is not

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13 81376 run out of the bottle and must be shaken or mixed to remove it. 28 days after preparation, the viscosity of the mixture according to the invention had not substantially increased, and the viscosity of the reference product is not important, because at a viscosity of more than 18,000 cp, the product is no longer marketable.

This experiment shows that when a very small amount of sodium polyacrylate is used, this greatly helps to stabilize the viscosity in the described detergent compositions during storage, an effect which was not previously known.

The liquid detergent according to the invention has a pleasantly light blue appearance and does not separate different layers of material during storage.

In addition to being a useful detergent for machine washing, the product of the invention can also be used in laundry hand washing and as a liquid for pre-treating heavily soiled areas of laundry. When washing the laundry by hand, the washing solution is allowed to be absorbed in the washing bellows through the outlet to promote maximum precipitation of bentonite in the laundry and thus to improve the softening effects, after which the laundry can be rinsed in a conventional manner. When a liquid detergent is used to pre-treat soiled areas of laundry, it is preferably added undiluted (although dilution may also be used) to and soiled areas of the fabric. During such addition and abrasion, the bentonite helps to remove the detergent and remove the dirt, be it oily or fine dirt, and at the same time the bentonite adheres to the fibers of the washable material, thus helping to soften the laundry. Such softening of the material can contribute to its less soiling and reduce the persistence of the dirt in it, especially when the soiled areas are cuffs or collars.

14 81 376

Example 2

A liquid detergent similar to Example 1 was prepared using 9% linear dodecylbenzenesulfonate instead of 8.8% linear tridecylbenzenesulfonate, 2% sodium alkyl polyethoxy sulfate having 12 to 13 carbon atoms in the alkyl, and an average of 6.5% ethoxy in polyethoxy. 0.2% of "Alcosperse" 107 (based on solids) instead of "Alcosperse" 107D (used in Example 1), 11% STPP, 6% sodium carbonate, 15% bentonite ("Mineral Colloid" 101) , the aforementioned additives and 55.7% tap water with a hardness of 100 ppm calculated as CaCO 2. The additional amount of sodium carbonate improves the miscibility of the various ingredients during the manufacturing process and the replacement of detergents does not substantially adversely affect the properties of the product. The product was prepared in substantially the same manner as described above.

The liquid detergent obtained was a stable flowable liquid with satisfactory cleaning and softening properties, similar to those described in connection with the liquid detergent of Example 1, whether used in machine washing or in hand washing or pretreatment of laundry. Its viscosity did not exceed 5000 cp after one month of storage at room temperature.

Similarly, satisfactory liquid detergents were prepared using 3% sodium lauryl alcohol sulfate, 2% Neodol 23-6.5 and 0.5% silicone antifoam oil in the preparation and adding them to the ingredients of Example 1 (water replacement). Also, when using sodium citrate or potassium citrate to replace sodium carbonate (or performing this substitution, e.g., replacing 30% with these citrates or trisodium nitrilotriacetate), useful liquid detergents having similar advantageous properties to the compositions described above were obtained.

Il is 81376

Example 3

A liquid detergent similar to Example 1 was prepared, but only 2% sodium carbonate was used in this mixture and the water content was added accordingly. Although the sodium carbonate content was reduced, the mixture could still be formed into a final product having the desired properties, which was useful as a high-performance laundry detergent for washing and softening cotton and synthetic materials 3a was also useful for pretreating such laundry. By adding 0.5% sodium carboxymethylcellulose to this mixture instead of the water content therein, the improved whiteness of the laundry was obtained without substantially losing the softening effect due to the anti-precipitation effect of CMC.

In other variations of the invention, by varying the amounts of the various components of the liquid detergent of Example 1 by + 10 or + 20% without going beyond the limits set forth in this specification, stable, flowable, liquid detergents were obtained that were useful for cleaning and softening purposes. For a few such products, it may be desirable to add up to 10% "Zeolite A" and up to 4% sodium silicate so that the Na 2 O: SiO 2 ratio is about 1: 2.4, although silicate can often be omitted, and when using zeolite silicate is usually omitted to prevent precipitation of zeolite-silicate aggregates or their reaction products.

As can be seen from the above description and the manufacturing example, the fabric softening, high-performance, liquid detergents of the present invention are stable, uniform in appearance, pleasant and effective. Despite the presence of a significant amount of gelling agent (bentonite) in the liquid medium, they do not form harmful gels and remain fluid during storage. Also, despite prolonged storage, during which the suspended bentonite comes into close contact with surfactants and inorganic builder salts in an aqueous medium, the bentonite does not agglomerate adversely and its softening effect is not lost during washing. The use of the above detergents and builders in an aqueous medium which also contains sodium polyacrylate provides a liquid detergent which, despite containing a considerable amount of swellable bentonite, remains liquid and flowable and retains its physical and chemical properties which allow it to be washed and it acts as a lubricant for the fibers therein, thus promoting the softening of such laundry. As mentioned above, the use of a liquid medium avoids the possibility that the bentonite will be deactivated due to overheating, as may occur in a spray-drying tower, for example.

The liquid detergents according to the invention are not only useful as products for washing laundry by machine or by hand, but also good for pretreatment of soiled areas of laundry, where the bentonite content has been found to help remove dirt and soften dirty areas (and is also used for washing purposes thereafter). ). Thus, from the above evaluation of the properties and advantages of the product of the invention, it can be considered to be a significant advance in the manufacture of detergent compositions, as it allows the non-gelling liquid detergent to be conveniently used for cleaning and softening organic detergents and does not contain chemically reactive cationic materials, such as quaternary ammonium salts, which are detrimental to anionic detergents, in order to provide a softening effect. The bentonites used are also not ecologically harmful, as quaternary ammonium salts can be, and do not cause harmful greasy deposits on washable garments, which as a result appear discolored, which is sometimes caused by quaternary products.

li 17 81 376

Although the sodium salts and sodium compounds of the various ingredients of the liquid detergents of the invention have been described above because they are highly satisfactory and generally marketed, at least some of the corresponding potassium compounds may be used instead and are within the scope of the invention. Thus, potassium-containing detergents, potassium-containing builder salts, potassium bentonites and potassium-containing additive salts can be used and are included together with the sodium compounds in the "alkali metal compounds" shown in the formulas.

Although the invention has been described above with reference to various embodiments and embodiments thereof, it is not limited thereto, as the invention may be modified within the scope of the appended claims.

Claims (5)

A textile softening liquid high-efficiency detergent composition containing a water-soluble synthetic organic anionic detergent salt of the sulfated and / or sulfonated type, a water-soluble builder salt, swelling bentonite and water intended for the anionic detergent (s), the liquid detergent composition being , 15 and 1.35 g / ml at room temperature, its pH is between 9.5 and 11 and it comprises 5-15% by weight of straight or branched alkali metal high alkylbenzenesulfonate having 10-16 carbon atoms in the higher alkylene, 1.5 -5% by weight of alkali metal alkyl polyethoxysulfate having 10-16 carbon atoms in the alkylene and 2-11 ethylene oxide groups in polyethoxine, 5-20% by weight of swelling bentonite and 40-75% by weight of water, characterized in that it contains 0.05- 0.5% by weight of water-soluble polyacrylate, whose molecular weight is between 1000 and 5000, which stabilizes the viscosity of the detergent composition so that it does not exceed 6000 cP upon storage. day at rest. 20 81 376 High-performance detergent composition according to claim 1, the viscosity of which does not exceed 5000 cP after 30 days at rest, characterized in that it contains 6-12% of linearly higher sodium alkylbenzenesulfonate with 12-15 carbon atoms in the higher alkylene, 1.5-3% sodium alkyl polyethoxysulfate with 12-16 carbon atoms in alkylene and polyethoxine have 2-7 ethylene oxide groups, 7-15% sodium tripolyphosphate, 2-7% sodium carbonate, 8-15% finely divided bentonite, 0.1-0.3% sodium polyacrylate, whose molecular weight is in the range 1000 -3000, and 50-70% water. Liquid detergent composition according to claim 2, characterized in that it contains 8-10% linearly higher sodium alkylbenzenesulfonate with 12-13 carbon atoms in the alkyl group, 1.7-2.7% sodium alkyl polyethoxy sulfate with 12-15 carbon atoms in the alkylene and 3-5 ethylene oxide groups in the polyethoxine, 9-13% sodium tripolyphosphate, 3-6% sodium carbonate, 10-14% finely divided bentonite, whose dry and swollen constituents penetrate a screen of about 44 μπι (325 mesh), 0.12-0.18% sodium polyacrylate with the molecular weight of range 1500-2500, and 50-70% water. Liquid detergent composition according to claim 3, characterized in that it contains about 9% linear sodium tridecylbenzenesulfonate, about 2% sodium alkyl polyethoxy sulfate with 12-15 carbon atoms in alkylene and about 3 ethylene oxide groups in polyethoxine, about 11% sodium tripolyphosphate, about 11% sodium tripolyphosphate. 12% bentonite, about 0.15% sodium polyacrylate with molecular weight about 2000, and about 60% water. Liquid detergent composition according to claim 4, characterized in that it contains about 0.2% sodium carboxymethyl cellulose and about 0.2% formalin, and that the water present is deionized, that its density is about 1.25 g / ml. and pH about 10.5. Il