CH667280A5 - TEXTILE SOFTENING, LIQUID, FULL DETERGENT. - Google Patents

Description

DESCRIPTION

The invention relates to a fabric softening liquid heavy-duty detergent, which is characterized by the features in the independent claim.

Liquid heavy-duty detergents which are suitable for washing textiles in the machine have been described both on the market and in various patents and in the literature. Bentonite has already been incorporated in particulate detergent compositions as a fabric softener and has been used in aqueous compositions as a thickener which can help to keep insoluble particulate substances such as abrasives suspended in a liquid medium. According to US Pat. No. 4,469,605, bentonite was used as a textile-softening constituent for the production of a textile-softening liquid heavy-duty detergent of a stability which was considered to be acceptable. However, it has been found that the detergent compositions of this patent, although stable and have a relatively constant viscosity when stored, provided that they are manufactured on a laboratory scale or in a pilot plant, often become thick when stored, if they are produced on an industrial scale.

The object of the invention is to make available, on the basis of bentonite as textile softening agent, textile softening liquid heavy-duty detergents whose viscosity and thickness are stable even after prolonged storage.

To achieve this object, according to the invention, a fabric softening liquid heavy-duty detergent with a density in the range from 1.15 to 1.35 g / ml at room temperature, a pH in the range from 9.5 to 11 and a viscosity in the range from 1 to 5 Pa - s (1000 to 5000 cps), which after 30 days of quiet storage at room temperature does not rise to more than 6 Pa • s (6000 cps), which is characterized by a content of 5 to 15% alkali metal ( linear or branched, higher) alkylbenzenesulfonate, in which the higher alkyl has 10 to 16 carbon atoms, 1.5 to 5% alkali metal alkyl polyethoxysulfate, in which the alkyl comprises 10 to 16 carbon atoms and the polyethoxy has 2 to 11 ethylene oxide groups, 5 to 25% water-soluble builder salt, 5 to 20% of a swelling bentonite, 0.05 to 0.5% water-soluble polyacrylate, e.g. Sodium polyacrylate, with a MW in the range of 1000 to 5000 and 40 to 75% water. The liquid detergent described is an economically acceptable heavy duty detergent which satisfactorily cleans textiles from both oily and particulate dirt and at the same time deposits sufficient bentonite on these textiles to make them noticeably soft. The compositions described can also be used to pretreat heavily soiled areas such as collars and cuffs of the textiles to be washed

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be applied. In this treatment, the presence of the bentonite in the liquid, which can be applied directly to the dirt spots with gentle rubbing, is considered to be helpful for dissolving and / or removing the dirt.

The anionic surfactant mixture used 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 alkylbenzenesulfonates may also be present in the formulations according to the invention, for example as potassium salts and in some special cases as ammonium and / or alkanolammonium salts, it has been found that the sodium salt is highly preferred, which also applies to the alkyl polyethoxysulfate surfactant - component applies. The higher alkyl group of the alkylbenzenesulfonate generally has 12 to 16, preferably 12 to 15, particularly preferably 12 to 13 and most preferably 13 carbon atoms. Said alkyl polyethoxysulfate, which can also be referred to as sulfated, polyethoxylated, higher, linear alcohol or as the sulfated condensation product of a higher fatty alcohol with ethylene oxide or polyethylene glycol, has an alkyl group with 10 to 16, preferably 12 to 15, e.g. about 13 carbon atoms, and has 2 to 11, preferably 2 to 7, more preferably 3 to 5, and most preferably 3 or about 3 ethylene oxide groups. Under suitable circumstances, other anionic surfactants such as fatty alcohol sulfate, paraffin sulfonates, olefin sulfonates, monoglyceride sulfates, sarcosinates, sulfosuccinates and similar surfactants can preferably be used as alkali metal, e.g. Sodium salts may be present, sometimes by partially replacing the aforementioned surfactants, but mostly in addition to these surfactants. Typically, these other surfactants are sulfated or sulfonated products (usually as sodium salts) and contain long chain (8 to 20 carbon atoms) linear or fatty alkyl groups. In addition to such other or complementary anionic surfactants, nonionic and amphoteric surfactants may also be present, such as Shell Chemical Company's neodoles, which are condensation products of ethylene oxide and higher fatty alcohols, e.g. Neodol 23-6.5, a condensation product of a higher fatty alcohol with about 12 to 13 carbon atoms and about 6.5 moles of ethylene oxide. Examples of the various surfactants and classes of surfactants can be found in Surface Active Agents, Volume 2, by Schwartz, Perry and Berch (Interscience Publishers, 1958) and in a number of yearbooks entitled McCutcheons's Detergents and Emulsifiers, for example the 1969 edition .

The builder salt combination of the invention which satisfactorily improves the cleaning power of the anionic surfactant mixture, produces the desired pH in the liquid detergent and the wash water and interacts with the surfactant and the bentonite in the washing and softening process is a mixture of sodium tripolyphosphate and sodium carbonate. In some cases, incompletely neutralized tripolyphosphate can be used, but mostly the sulfate used should be pentasodium tripolyphosphate, NasPsOio. Of course, under certain circumstances, for example in the presence of potassium salts of other substances, ion exchange in an aqueous medium can lead to the presence of salts other than sodium tripolyphosphate. For the purposes of the invention, however, it is assumed that sodium tripolyphosphate, as the pentasodium salt, the material that is normally added to the mixer for the production of the liquid detergent according to the invention is the tripolyphosphate used.

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Other preferred builder salts that can 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 also be used in part instead of these other builder salts. Of course, various mixtures of the water-soluble builder salts mentioned can be used. The tripolyphosphate carbonate mixture described has been found to be the most preferred, although the other builders and mixtures thereof are also effective. In addition to the amounts of the builders specified above, other builders can be used as described below. So other phosphates, such as tetranatrium pyrophosphate or tetrapotassium pyrophosphate, sodium bicarbonate, sodium sesquicarbonate, sodium gluconate,

Borax, sodium silicate and sodium sesilicate are used. The polyacetal carboxylate builders described in U.S. Patent No. 4,144,226 and other monsanto patents, available under the Builder U tradename, may also be useful. Applicable, water-insoluble builders include the zeolites such as zeolite A, mostly in the form of its crystal hydrate, although amorphous zeolites can also be used. It is a feature of the invention that sodium silicate is not necessary in order to produce an effective heavy duty detergent softening composition, which is why this silicate is generally omitted from the formulations according to the invention and thus undesirable properties which it may have are avoided. For example, any possibility of the silicate to react with other components of the liquid laundry detergent such as zeolite, sodium carbonate or other builders to form insoluble products which tend to settle on the laundry and affect the luminosity of the colors of that laundry will be avoided. The lack of silicate in the wash medium also prevents the formation of insoluble, silicon-containing decomposition products of the silicate, which make the liquid detergent and laundry slightly unsightly when visible in the liquid detergent or deposited on the laundry.

The bentonite used is a colloidal clay (aluminum silicate) that contains montmorillonite. The most valuable type of ben-tonite for the production of the base beads according to the invention is that known as sodium bentonite (or Wyoming or Western bentonite), which is normally light to off-white or a brown, extremely fine powder, which in water is a colloidal suspension with strong thixotropes Can form properties. In some cases, a potassium bentonite or a mixed sodium / potassium bentonite can be used instead. The swelling capacity of such a clay in water is usually in the range from 3 to 15 or 20 ml / g, preferably 7 to 15 ml / g; its viscosity in 6% concentration in water is usually 0.003 to 0.03 Pa-s (3rd to 30 cps), preferably 0.008 to 0.03 Pa * s (8 to 30 cps). Preferred swelling bentonites of this type are sold under the trade name Mineral Colloid as industrial bentonites by the Benton Clay Company. These materials are the same as those previously sold under the name THIXO-JEL, selectively mined and enriched concrete. The most valuable are those that are obtained as mineral colloid numbers 101 etc., according to THIXO-JEL numbers 1,2,3 and 4. These materials have pH values (6% concentration in water) in the range from 8 to 9.4, maximum levels of free moisture (before addition to the liquid detergent medium) from 4 to 8% and specific weights of about 2.6. At least 3 depend on the powder quality of these materials

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at least about 85% through a 74 micron (200 mesh) sieve opening. Preferably all of the bentonite passes through a 200 mesh sieve opening, most preferably the entire amount passes through a No. 325 sieve opening so that the equivalent diameter of the bentonite is equal to or less than 74 microns and preferably approximately equal to or less than 44 microns is. The American Colloid Company is an advantageous supplier of fine-particle bentonite of satisfactory color. Of the bentonites it supplies, the one sold as AEG 325 bentonite corresponds to the previously sold mineral colloid's and THIXO-JEL's. Although fortified Wyoming bentonite is part of the invented. Preferred liquid detergent compositions according to the invention, other bentonites including the synthetic bentonites (which are produced from bentonites with exchangeable calcium and / or magnesium by sodium carbonate treatment) are also useful for incorporation into the compositions according to the invention. Typical chemical analyzes of some bentonites which can be used according to the invention show: 64.8 to 73.0% SÌO2.14 to 18% Al2C> 3.1.6 to 2.7% MgO, 1.3 to 3.1% CaO, 2.3 to 3.4% Fe2C> 3.0.8 to 2.8% NajO and 0.4 to 7.0% K2O.

The use of bentonite as a fabric softener in the liquid compositions according to the invention offers the advantage that the bentonite does not have to be dried, for example in a spray dryer, and therefore the risk is avoided that the bentonite loses its plasticizing capacity due to the immobilization of the plates which form it due to overdrying . It is also unnecessary to give the detergent composition of the invention a formulation which ensures rapid disintegration of the detergent beads in the wash water to release the bentonite particles, since in the liquid detergent these particles are not agglomerated into hard masses which could take additional time to disintegrate.

The polyacrylate used is a low molecular weight sodium polyacrylate which is in the range of about 1000 to 5000, preferably 1000 to 3000, and particularly preferably 1000 to 2500, e.g. is around 2000. The average molecular weight is usually in the range of 1200 to 2500, e.g. at around 2000. Although other polyacrylates can sometimes be used instead of the sodium polyacrylate described, like other alkali metal polyacrylates, it is preferred that such a replacement takes place, if at all, only in small amounts, and it is preferred that the polyacrylate used is sodium polyacrylate. These materials are commercially available from Alco Chemical Corporation under the Alcosperse name. The sodium polyacrylates are available as clear, amber-colored liquids or powders that are completely soluble in water, the solutions having a solids content of about 25 to 45%, e.g. Have 30% and the pH of these solutions or a 30% aqueous solution of the powder is in the range of about 7.0 to 9.5. Among these products, the preferred ones are currently from Alco Chemical Corp. sold as Alcosperse 104,107,107D, 109 and 149, with Alcosperse 107D, a 100% solids powder, being highly preferred, although Alcosperse 107, a 30% aqueous solution, can be used instead with little difference in results. Both are polyacrylates, the liquid (107) having a pH in the range from 8.5 to 9.5 and the pH of the powder (107D) at a concentration in water of 30% in the range of 7, 0 to 8.0.

The only other necessary component of the detergents according to the invention is water. Usually the hardness of this water is less than about 300 ppm

CaC03, preferably less than 150 ppm. It may often be desirable to use desalinated water, although tap water with a hardness level below 50 or 100 ppm is often reasonably satisfactory. Although harder water can be successfully used to prepare the liquid detergents according to the invention, it is believed that softer water is less likely to form undesirable substances that adversely affect the appearance of the liquid detergent or that undesirably arise during washing of the laundry.

Various additives, both aesthetic and functional, can be present in the liquid detergents, such as fluorescent brighteners, perfumes and dyes. The fluorescent brighteners include the well-known stilbene derivatives, including the cotton and nylon brighteners, as are sold under the trade name Tinopal, e.g. 5BM. Perfumes that are commonly used include essential oils, esters, aldehydes and / or alcohols, all of which are well known in perfumery. The coloring substances can include dyes and water-dispersible pigments of various types including ultramarine blue. Since the bentonite has a brightening effect in the liquid detergent, the product is often available in attractive pastel shades. In addition, titanium dioxide can be used to lighten the color of the product or to whiten it. Inorganic filler salts such as sodium sulfate and sodium chloride may be present as well as substances which prevent reprecipitation, e.g. Sodium carboxymethyl cellulose; Enzymes; Bleach; Bactericides; Fungicides; substances preventing foaming, such as silicones; pollution preventing substances such as copolyester; Protective substances such as formalin; Foam stabilizers such as lauric myristine diethanolamide; and cosolvents such as ethanol. The individual amounts of such additives are normally less than 3%, often less than 1% and sometimes less than 0.5%, with the exception of the fillers and solvents and additional surfactants and builders which may be present, the amounts of which can sometimes be higher, for example 10%. The total amount of additives including unspecified surfactants and builders normally does not exceed 20% of the product and is preferably less than 10%, particularly preferably less than 5% of the same. Of course, the auxiliaries or additives used must not interfere with the washing and softening action of the liquid detergent and must not increase the instability of the product when standing. Neither should they cause significant deposits to form on the textiles.

The proportions of the various components in the liquid detergent of the invention are 5 to 15, preferably 6 to 12, particularly preferably 8 to 10 and most preferably approximately 9% sodium (linear, higher) alkylbenzene sulfonate; 1.5 to 5, preferably 1.5 to 3, particularly preferably 1.7 to 2.7 and most preferably about 2% sodium alkyl polyethoxysulfate; 5 to 25, preferably 9 to 22 and particularly preferably about 12 to 19% builder salt; 5 to 20, preferably 8 to 15, particularly preferably 10 to 14 and most preferably approximately 12% swelling bentonite; 0.05 to 0.5%, preferably 0.1 to 0.3%, particularly preferably 0.12 to 0.18%, and most preferably 0.15% or about 0.15% sodium polyacrylate; and 40 to 75, preferably 50 to 70, more preferably 55 to 70 and most preferably about 60% water. If the builder salts are sodium tripolyphosphate and sodium carbonate, their amounts are usually 7 to 15, preferably 9 to 13 and particularly preferably about 1 l% tripolyphosphate and 2 to 7, preferably 4

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3 to 6 and particularly preferably about 4% sodium carbonate, the ratio of tripolyphosphate to carbonate being in the range from 2: 1 to 6: 1.

The liquid detergents can be prepared by appropriately mixing the various constituents, the bentonite preferably being added to a premix of the main amount of water with tripolyphosphate, carbonate, CMC and the anionic surfactant. For example, the polyphosphate and carbonate in finely divided form (normally sufficiently fine to pass a 94 micron sieve opening corresponding to No. 160) can be mixed with and dissolved in most of the water, after which the CMC and the anionic surfactant are added, then the bentonite, polyacrylate and the rest of the components of the formulation in any order. The amount of water retained is then added to the rest of the liquid detergent, causing the thickened liquid to be diluted to a desired apparent viscosity.

Experience has shown that the desired amount of water retained and added last in the manufacture is normally 5 to 20% of the finished liquid detergent, e.g. about 10% of the same. While mixing the various components with the aqueous medium and especially when adding the bentonite and the residual water, it is important to keep the mixture moving, for example by continuing to mix or stir it. It is preferred never to shut down the mixer and to carry out the process continuously, which normally takes about 3 to 30 minutes per batch. Although the water can be heated to accelerate the dissolution of the various constituents of the product contained therein and to promote the dispersion of the bentonite, it is not necessary to use water at room temperature, e.g. a temperature in the range of 15 to 30 ° C, e.g. 20 to 25 ° C, can be used.

Immediately after the manufacturing process has ended, the viscosity of the liquid detergent according to the invention is usually in the range from about 1 to 2 Pa s (1000 to 2000 cps), for example about 1.5 Pa s (1500 cps). The liquid detergent is intended for packaging in and dispensing from comparatively narrow-necked glass or plastic bottles, from which it must be pourable at the beginning and after normal aging. If you omit the polyacrylate from the formulation, it has been shown that the commercially available liquid detergent is initially thicker and then becomes more viscous when standing, so that its viscosity after about one month at room temperature of about 3 Pa - s (3000 cps) to over 18 Pa - s (18 000 cps) can be increased. At 18 Pa - s (18,000 cps), the liquid detergent is too thick to be satisfactorily pourable and requires the consumer to shake or stir it to dilute it enough to pour it out of the bottle. Needless to say, such a thickening behavior is not desirable. The preferred viscosity of the liquid detergent according to the invention is about 4 Pa-s ± 1 Pa-s (4000cps ± 1000 cps) and viscosities of this order of magnitude are preferred by consumers. It has been shown that when using the polyacrylate constituent and the formulation according to the invention, such as, for example, that of Example I, the viscosity after about one month's storage is about 4 Pa-s (4000 cps) [4.05 Pa-s (4050 cps) after 28 days] and that further storage does not result in any significant increase in viscosity. The indicated viscosities were measured with a Brookfield LVT viscometer, namely with a spindle No. 2 the viscosities under 2 Pa - s (2000 cps), one

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Spindle # 3 the viscosities in the range of 2 to 9 Pa - s (2000 to 9000 cps), and with a spindle # 4 at viscosities over 9 Pa - s (9000 cps). All viscosities were measured at 12 rpm and at 25 ° C.

The following examples are intended to illustrate the invention. Unless otherwise stated, all parts in the examples, the description and the claims are weight-related and all temperatures are in ° C.

example 1

Examples percent

Sodium (linear) tridecylbenzene sulfate 8.8 Sodium alkyl polyethoxy sulfate (alkyl = linear 2.2 alkyl with 12 to 15 carbon atoms;

Polyethoxy = 3 ethoxy groups

Pentasodium tripolyphate 11.0

Sodium carbonate (anhydrous) 4.0

Sodium carboxymethyl cellulose 0.2

Sodium polyacrylate (M.G. = 2000) 0.15

Titanium dioxide 0.5

Formalin 0.2

Bentonite (44 microns, 325 mesh, 12.0

American Colloid Co. 325 AEG)

Fluorescent brightener (Tinopal LMS-X) 0.3

[CIBA GEIGY]

Perfume 0.4

Dye (CI Acid Blue 9 / CI42090) 0.0045

Pigment (CI Pigment Blue 29 / CI77007) 0.04

Water (desalinated) 60.2055

100.0

Approximately 84% of the amount of water intended for the formulation was placed in a suitable mixer, for example a vertical, cylindrical tank with heating and cooling devices and a connection to an emptying pump, the formal amounts of polyphosphate and carbonate (with particle sizes through a 94 micrometer 160 sieve opening) was added, with stirring (using a Lightnin-type mixer), then the CMC and then the anionic surfactants and finally the other components in any suitable order. The rest of the water was added, the mixture was diluted, then the perfume was added, mixing, and the product was ready to be pumped out of the mixer into narrow-neck bottles that serve as dispensing containers. During the mixing, which took about 9 minutes in total, the added materials and the final product were at a temperature of about 20 ° C. In some cases, in order to accelerate the dissolution and dispersion of the components, the temperature of the water and the other components can be increased to 40 to 50 ° C., so that the temperature of the finished product is approximately 30 to 40 ° C.

the mixing time can be reduced to about 5 or 6 minutes.

The liquid detergent obtained has a viscosity (at room temperature) of about 1.55 Pa-s (1550 cps) and can be poured out satisfactorily from a plastic bottle which has a discharge opening of about 2.5 cm. The detergent has a pH of about 10.5. It was used to wash a mixed load of soiled laundry, including parts made of cotton

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and polyester / cotton belonged, which were contaminated with particulate dirt and sebum dirt. The liquid detergent was placed in the drum of a standard washing machine using approximately 5 measuring cups of liquid detergent per wash program (to produce a concentration of liquid detergent in the wash water of approximately 0.18%). The temperature of the wash water was 21 ° C (to test the washability of the product in "cold" water), the water had a mixed calcium and magnesium hardness of 10 about 150 ppm as CaCCb. After washing the laundry and test parts, they were either on a line or in a machine (a conventional clothes dryer)

dried.

The same measures were repeated with a comparative detergent in which the sodium polyacrylate was omitted and replaced by water.

Both the composition of the invention containing sodium polyacrylate and the comparative composition are excellent fabric softening detergents, 20 but the product according to the invention is far superior in one essential characteristic, namely the maintenance of a satisfactory viscosity during storage. The viscosity of the product according to the invention was 2.58 Pa-s (2580 cps) after 5 days, whereas that of the comparative product was 9.4 Pa-s (9400 cps); after 14 days the viscosities were 3.4 and 13.5 Pa-s (3400 and 13 500 cps);

after 21 days the viscosities were 3.5 Pa-s and 14.5 Pa-s (3500 cps and 14 500 cps) and after 28 days they were 4.05 and 18.5 Pa-s (4050 and 18 500 cps, respectively) ). 30 At 4.05 Pa • s (4050 cps) the product was still pourable from the bottle, but at 18.5 Pa • s (18 500 cps) it was not pourable and had to be shaken or stirred in order to be dispensable. After 28 days after the preparation, the viscosity of the formulation according to the invention no longer increased noticeably for 3 s, while further increases in the viscosity of the comparison product are not of particular importance, since the product with a viscosity above 18 Pa · s (18,000 cps) is in any case inalienable.

It can be seen from the experiment that the presence of a very small amount of sodium polyacrylate significantly contributes to stabilizing the viscosity of the detergent compositions described during storage, an effect which was not predictable.

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The liquid detergent of the invention has an attractive, light blue, uniform appearance and does not settle to different layers of material when stored.

In addition to being useful as a detergent for the machine, the product of the invention can also be used for hand washing and for pretreating extremely soiled areas. In order to achieve a maximum bentonite deposit on the laundry during hand washing and thereby improve the softening effect, the washing solution is drained from the washing drum through a floor drain so that it flows through the laundry, after which the laundry can be rinsed in the usual way. When used for the pretreatment of soiled laundry areas, the liquid detergent is preferably applied undiluted (although dilutions can also be used) to the soiled areas and rubbed into them. When applied and rubbed in in this way, the bentonite supports the surfactant in loosening and removing oily or particulate dirt and at the same time adheres to the fibers of the laundry, as a result of which it is softened. Such a softening of the material can help to make this area less dirty and less dirt-holding in the future, especially when it comes to shirt collars or cuffs.

Example 2

A liquid detergent like that of Example 1 was formulated using 9% of a linear dodecylbenzenesulfonate instead of the 8.8% linear tridecylbenzenesulfonate, 2% sodium alkylpolyethoxysulfate in which the alkyl had 12 to 13 carbon atoms and the polyethoxy averaged 6. Has 5 ethoxy groups, instead of the 2.2% of the previously used, 0.2% Alcosperse 107 (solids content basis) instead of Alcosperse 107D (used in Example 1), 11% STPP, 6% sodium carbonate, 15% bentonite (mineral colloid 101), the above-mentioned auxiliaries and 55.7% tap water with a hardness of 100 ppm as CaC03. The additional sodium carbonate improves the miscibility of the various components during manufacture. The replacement of the surfactants does not significantly affect the properties of the product. The product was made in essentially the same manner as described above.

The liquid detergent is a stable, pourable liquid which exhibits the desired cleaning and softening properties which have been described for the liquid detergent of Example 1 both when washing by machine and by hand or when pretreating the laundry. After one month of storage at room temperature, the viscosity does not exceed 5 Pa - s (5000 cps).

Example 3

A liquid detergent was prepared as that of Example 1, but in which only 2% sodium carbonate was used with a corresponding increase in the water content. Although the mixture had a reduced sodium carbonate content, it still had to be processed into an end product with the desired properties, which is a valuable detergent and softener for cotton and synthetic materials and also for the pretreatment of the same. If 0.5% sodium carboxymethyl cellulose is added to the formulation instead of part of the water, an improved whitening of the laundry is achieved without a noticeable deterioration in the softening effect due to the anti-precipitation activity of the CMC.

In other modifications of the invention, the proportions of the various components of the liquid detergent of Example 1 were changed by ± 10% or ± 20% without leaving the ranges indicated in the description. Stable, pourable, liquid detergents with good cleaning and softening effects were obtained. In some of these products it may be desirable to incorporate a larger amount, such as 10% Zeolite A or up to 4% sodium silicate with a Na2Ü: SÌO2 ratio of about 1: 2.4, although the silicate is often not desired. In the presence of zeolite, the silicate is normally omitted to avoid the deposition of zeolite-silicate aggregates or reaction products.

As can be seen from the description and examples, the heavy duty fabric softening detergents of the invention are durable, uniform, attractive and effective. Despite the presence of a considerable amount of gelling agent (bentonite) in a liquid medium, they do not form gels that give cause for complaint and remain pourable when stored. Despite long storage, in which the suspended bentonite is exposed to intimate contact with surfactants and inorganic builder salts in an aqueous medium, it does not agglomerate significantly and retains its softening effect. When using the mentioned

Surfactants and builders in an aqueous medium that also contains sodium polyacrylate creates a liquid detergent that remains liquid and pourable despite the content of a substantial amount of swelling bentonite and maintains its physical and chemical properties that allow it to be deposited on the laundry and acts as a lubricant for the fiber thereof, thereby softening this laundry. In addition, as mentioned above, using the liquid medium eliminates the risk of the bentonite being deactivated by overheating, such as in a spray drying tower.

The liquid detergents of the invention, in addition to being valuable machine and hand wash products, are also highly suitable for pretreating stained areas in the laundry, assuming that the bentonite is used to remove stains and soften the stained spot (and the product is then used for washing purposes). Thus, from the above listing of the properties and advantages of the invention, it can be seen that it will make significant progress in the detergent sector since it will allow for the convenient use of an unspecified

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liquid detergents for cleaning as well as for softening laundry (as well as for pretreating the same), whereby excellent anionic surfactants are used and it is not necessary to use cationic materials such as quaternary ammonium salts which react chemically with these anionic surfactants for softening. In addition, the bentonites used are environmentally friendly, as quaternary ammonium salts should be, and do not cause undesirable accumulations of greasy deposits on the laundry, which often make them appear discolored, as sometimes when using the quaternary compounds.

Although the sodium salts and 15 sodium compounds have been specified for the various constituents of the liquid detergents according to the invention, since they are particularly satisfactory and commercially available, the corresponding potassium compounds can at least partially be used in their place. Potassium surfactants, potassium builder salts, potassium bentonites and 20 auxiliaries in the form of potassium salts can thus be used, which likewise fall under the alkali metal compounds of the formulations indicated.

Claims (5)

667280 1.7 to 2.7% sodium alkyl polyethoxy sulfate, the alkyl group of which has 12 to 15 carbon atoms and the polyethoxy part of which has 3 to 5 ethylene oxide groups, 9 to 13% sodium tripolyphosphate, 1.5 to 3% of sodium alkyl polyethoxysulfate, the alkyl group of which has 12 to 16 carbon atoms and the polyethoxy part of which has 2 to 7 ethylene oxide groups, 7 to 15% sodium tripolyphosphate, 1.5 to 5% of alkali metal alkyl polyethoxysulfate, the alkyl group of which has 10 to 16 carbon atoms and the polyethoxy part of which has 2 to 11 ethylene oxide groups, 5 to 25% water-soluble builder salt, 5 to 20% of a swelling bentonite, 0.05 to 0.5% of a water soluble polyacrylate with a MW in the range of 1000 to 5000 and 40 to 75% Water. 1. Fabric softening liquid heavy-duty detergent with a density of 1.15 to 1.35 g / ml at room temperature, a pH of 9.5 to 11 and a viscosity of 1 to 5 Pa-s (1000 to 5000 cps), which at 30 days of quiet storage at room temperature does not rise to more than 6 Pa-s (6000 cps), characterized by a content of 5 to 15% alkali metal (linear or branched, higher) alkylbenzenesulfonate, the higher alkyl group of which contains 10 to 16 carbon atoms, 2 to 7% sodium carbonate 8 to 15% finely divided bentonite, 0.1 to 0.3% sodium polyacrylate with a MW of 1000 to 3000 and 50 to 70% water. 2. Heavy-duty detergent according to claim 1, the viscosity of which does not rise to more than 5 Pa s (5000 cps) during 30 days of quiet storage at room temperature, characterized by a content of 6 to 12% sodium (linear, higher) alkylbenzenesulfonate, the higher alkyl group of which has 12 to 15 carbon atoms, 2nd PATENT CLAIMS 3 to 6% sodium carbonate, 10 to 14% finely divided bentonite with a particle size of approximately 44 micrometers (No. 325 US sieve series) in a dry and unswollen state, 0.12 to 0.18% sodium polyacrylate with a MW of 1500 to 2500 and 55 to 70% water. 3. Heavy duty detergent according to claim 2, characterized by a content of 8 to 10% sodium (linear, higher) alkylbenzenesulfonate with 12 to 13 carbon atoms in the alkyl group, 4. heavy-duty detergent according to claim 3, characterized by a content of about 9% sodium (linear) tridecylbenzenesulfonate, about 2% sodium alkyl polyethoxysulfonate, the alkyl group of which contains 12 to 15 carbon atoms and the polyethoxy part of which comprises about 3 ethylene oxide groups, about 11% sodium tripolyphosphate, about 4% sodium carbonate, about 12% bentonite, about 0.15% sodium polyacrylate with a MW of about 2000 and about 60% water. 5. Heavy duty detergent according to claim 4, characterized by a content of about 0.2% sodium carboxymethyl cellulose and about 0.2% formalin, the water having been desalted, the density being about 1.25 g / ml and the pH being about 10.5 . 6. Fabric softening liquid heavy-duty detergent composition with a density of 1.15 to 1.35 g / ml at room temperature, a pH of 9.5 to 11 and a viscosity of 1 to 5 Pa.s (1000 to 5000 cps), which at 30 days quiet storage at room temperature does not rise to more than 6 Pa * s (6000 cps), characterized by a content of 6.5 to 20% water-soluble, anionic sulfonated and / or sulfated surfactant, 5 to 25% builder salt, 5 to 20% swelling bentonite, 0.05 to 0.5% sodium polyacrylate with a MW in the range of 1000 to 5000 and 40 to 75% water.