DE3939579A1 - SHAPED BODY CLEANER - Google Patents

Abstract

Described is the improvement of the processing and utilization properties of shaped personal-cleanliness articles, in particular pieces of toilet soap containing 25-50 % by wt. of the sodium salt of a C12-C18-acylisethionate, by the addition of 10-45 % by wt. of the sodium salt of monoalkyl(C12-C18) ester of sulphosuccinic acid, 5-15 % by wt. of linear saturated fatty acids with 12-22 C-atoms and 5-20 % by wt. of finely divided water-insoluble zeolite-type alkali-metal aluminium silicates, relative to the overall composition.

Description

The invention relates to molded body cleansers Basis of sodium salts of C₁₂-C₁₈ acyl isethionates with additives to improve formability and foam properties.

It is known that the sodium salts of C₁₂-C₁₈ acyl isethionates similar such as fatty acid-based soaps by kneading, piliering, extrusion, Extrude, cut and press into a suitable one Bring shape for transportation and use. To this Ways can be needles, granules, pasta, bars and handy Generate toilet soap bars. The low plasticity of the acyl isethionates causes considerable processing problems molded products. In addition, the foam behavior of the Acylisethionate unsatisfactory, they have a low foam consistency and too little foaming behavior. It therefore has no shortage of attempts, through the processing and additions To improve application properties of the acyl isethionates and for the manufacture of molded personal cleansers more appropriately do.

An overview of known additives for synthetic toilet Soaping is JAOCS, Vol. 59, No. 10, (October 1982), pages 442-448 published. DE 31 29 280 A1 describes a method for Preparation of detergent pieces known, for. B. Sodium Lauroyl Isethionate and contain "in situ" sulfosuccinic acid esters can. From US 40 07 125 were toilet soaps based on Acyl isethionates known to reduce the tendency to swamp  an alkane sulfonate and free saturated fatty acids as binders contain. The addition of alkali aluminum silicates from So far, zeolite type has only been used in syndet pieces containing builder the textile laundry has been proposed.

It has now been found that the addition of sulfosuccinic acid ester Surfactants, free fatty acid and finely divided alkali aluminum silicate of the zeolite type the malleability of the syndet mass and that Foam behavior influenced very favorably. Subject of the invention are therefore shaped body cleansers containing 25-50% by weight of a C₁₂-C₁₈ acyl isethionate sodium salt, characterized in that to improve processing and application properties additives from

10 to 45% by weight of a sulfosuccinic acid monoalkyl (C₈-C₁₈) ester disodium salt,
5 to 15 wt .-% of a linear saturated fatty acid with 12-22 carbon atoms, and
5 to 20 wt .-% of a finely divided, water-insoluble alkali aluminum silicate of the zeolite type
each based on the total composition,

are included.

Acyl isethionates have long been known skin-friendly surface-active agents Substances by esterification of fatty acids with the Sodium salt of 2-hydroxyethane sulfonic acid (isethionic acid), e.g. B. accessible by the method described in US 33 20 292 are. If fatty acids with 12 to 18 C atoms, e.g. B. laurin, myristin, palimitin or Stearic acid or technical fatty acid fractions, e.g. B. the uses C₁₂-C₁₈ fatty acid fraction obtainable from coconut fatty acid, the C₁₂-C₁₈ acyl isethionates suitable according to the invention are obtained.  

The sulfosuccinic acid monoalkyl (C₈-C₁₈) ester disodium salts according to known method z. B. manufactured in that Maleic anhydride with a fatty alcohol with 8-18 C atoms for Maleic acid monoesters of fatty alcohol and this with Sodium sulfite to sulfite succinate. Especially Suitable sulfosuccinic acid esters are derived from fatty alcohol fractions with 12-18 C atoms, as z. B. from coconut fatty acid or methyl coconut fatty acid accessible by hydrogenation are.

The most suitable as saturated linear fatty acids are vegetable and animal fats after hydrogenation of the double bonds available fatty acids. Palmitin and Stearic acid and technical mixtures of these fatty acids.

Suitable as finely divided, water-insoluble alkali aluminum silicates synthetic crystalline containing bound water Sodium aluminosilicates, preferably zeolite NaA. It is also useful the zeolite NaX and its mixtures with zeolite NaA. Suitable Zeolites have a calcium binding capacity, which according to the information is determined in DE 24 12 837 and that in the range of 100 to 200 mg CaO / g lies. Preferably comes the one with the trade name Wassalith P (Degussa) available zeolite NaA with a content of approx. 20 % By weight of bound water in an amount of 8-15% by weight Application.

The other inventive plasticizers and binders shaped body cleansers used for such purposes contain known substances. These are e.g. B. neutral fats, preferably those from the group of fatty alcohols with 12-22 C atoms, the fatty acid glycerides of C₁₂-C₂₂ fatty acids or Fatty acid (C₁₂-C₂₂) fatty alcohol (C₁₂-C₂₂) esters, which are preferred in  Amounts of 1-15% by weight, based on the shaped personal cleansing agents, be used.

As additives to further improve the creaminess of the foam and the feeling of the skin during and after use have also changed proven other substances, their additional use for manufacturing the shaped body cleanser of the invention can be recommended: Therefore, particular preference is given to the invention molded body cleanser with an additional Content of 1-10 wt .-% of nonionic surfactants of the type Polyglycol ether with an HLB value of 12-18. Such products are by adding ethylene oxide to z. B. with fatty alcohols 12-18 C atoms, on fatty acids with 12-18 C atoms or on Glycerol or sorbitan fatty acid partial esters based on C₁₂-C₁₈ fatty acids or on fatty acid alkanolamides. The HLB value means the proportion of hydrophilic groups, e.g. B. on Glycol ether or polyol groups based on the total molecule and it is calculated based on the relationship

HLB = 1/5 × (100% by weight L),

where% by weight L is the percentage by weight of lipophilic groups, ie e.g. B. on alkyl or acyl groups with 12-18 C atoms in the surfactant molecule represents.

Such shaped body cleansing agents according to the invention are furthermore preferred to improve foam behavior and skin tolerance an addition of 1-10 wt .-% of one water-soluble salt of a water-soluble protein hydrolyzate Contain fatty acid condensation product. These are through Condensation of fatty acids, preferably fatty acids with 12-18  C atoms with amino acids, mono-, di- and water-soluble oligopeptides and mixtures of such products as they are made in the Hydrolysis of proteins occur. This protein hydrolyzate fatty acid Condensation products are neutralized with a base and are then preferably as alkali, ammonium, mono-, di- or Trialkanolammoniumsalz before. Such products are under the trademark LAMEPON® or MAYPON® have been commercially available for a long time and are used as skin-friendly surfactants.

The addition of one per se has also proven to be particularly advantageous known emulsifier of the water-in-oil type in an amount of approx. 1-5 wt .-% proven. It’s a mixed ester, which is a condensation product from a pentaerythritol di-fatty acid ester and a citric acid di-fatty alcohol ester, such as it is described in more detail in DE-PS 11 65 574. By adding such The mixed ester becomes a particularly creamy, fine-bubble foam and a pleasant feeling on the skin when using the body cleanser reached.

Other known surfactants and auxiliaries can be found in subordinate Quantities of up to 20% by weight in total in the inventive Body cleansers may be included. Such further if necessary contained surfactants and auxiliaries, which can be used in the cleaning agents shaped according to the invention are particularly suitable, are z. B.

• - anionic surfactants, e.g. B. alkyl sulfates with 12-18 carbon atoms, alpha-olefin sulfonates with 15-18 C atoms, secondary alkane sulfonates with 10-18 carbon atoms, acyl sarcosines and acyl taurines each with 8-18 C atoms in the acyl group, alkyl (C₈-C₁₈) - phosphates and acylcyanamides with 8-18 C atoms in the acyl group,
• non-ionic surfactants, e.g. B. fatty acid mono- and diglycerides, Sorbitan fatty acid esters, fatty acid alkanolamides and addition products of ethylene oxide and / or propylene oxide on alkylphenols with 8-15 C atoms in the alkyl group. Other suitable nonionic  Surfactants are sugar fatty acid esters and methyl glucoside Fatty acid partial esters and their ethylene oxide addition products,
• - ampholytic surfactants, e.g. B. 2-alkyl (C₈-C₁₈) aminopropionic acid, Alkyl (C₈-C₁₈) aminoacetic acid,
• - zwitterionic surfactants such as B. N-alkyl (C₈-C₁₈) -dimethylammonio- glycinate, alkyl (C₈-C₁₈) aminopropyl dimethylammonioglycinate, Alkyl (C₈-C₁₈) -3-carboxymethyl-3-hydroxethylimidazoline,
• - organic fillers and auxiliaries such. B. starch, dextrin, Carboxymethyl cellulose, sorbitol, mannitol, urea, proteins and Protein hydrolyzates, polyethylene glycols, paraffin,
• - inorganic fillers and auxiliaries such. B. sodium sulfate, Sodium hydrogen phosphate, sodium hydrogen carbonate, layered silicates (e.g. bentonite, montmorillonite),
• - complexing agents,
• - antimicrobials, preservatives,
• - dyes,
• - opacifiers and matting agents, e.g. B. pigments such as titanium dioxide,
• - fragrances.

In a particularly preferred embodiment, the detergent shaped according to the invention

40-50 wt .-% of a C₁₂-C₁₈ acyl isethionate sodium salt
10-20 wt .-% of a sulfosuccinic acid monoalkyl (C₁₂-C₁₈) ester disodium salt
5-10 wt .-% palmitic and / or stearic acid
5-15 wt% zeolite NaA
5-10% by weight of cetyl and / or stearyl alcohol
5-10% by weight fatty alcohol (C₁₆-C₁₈) polyglycol ether (average degree of oxyethylation 10-20)
3-10% by weight protein hydrolyzate-fatty acid condensation product
1- 5 wt% water.

The production of the cleaning agents shaped according to the invention can be done in the usual way for such products, wherein the combination of additives according to the invention is a special one well formable, plastic in the heat and hard after cooling Mass is created and the molded products have a smooth surface exhibit. Usual methods for mixing or homogenizing, Kneading, if necessary peening, extrusion, if necessary Pelletizing, extruding, cutting and pressing, such as in the publication in JAOCS, vol. 59, cited above, No. 10 (October 1982) can be used for manufacturing of the cleaning agents shaped according to the invention can be used. Has made for the production of handy Syndet soap bars the following procedure has proven particularly effective:

The fusible components, e.g. B. the fatty alcohol, the fatty acids, the nonionic surfactants and any contained meltable organic fillers and auxiliaries are used at temperatures melted from 60 to 90 ° C in a heatable kneader or mixer and mixed. Then the C₁₂-C₁₈ acyl isethionate is added Sodium salt, of sulfosuccinic acid monoalkyl (C₁₂-C₁₈) - ester disodium salt, zeolite NaA and fatty acid Oligopeptide condensation product and optionally other components which cannot be melted at 60 to 90 ° C and Water, as well as a mixing or kneading of the approach a temperature of approx. 70 ° C. A further homogenization leaves can be achieved by pressing the mass through sieves several times and finally at a head temperature of 40 to 70 ° C The strand is pressed, which is cut into uniform pieces becomes. The pieces can finally be put in a molding press final form. Instead of the extrusion press also an extrusion through a perforated plate, the  Detergent according to the invention after cooling in the form of Needles or, if the perforated plate knives are connected, in Form of granules can be obtained.

The following examples are intended to be the subject of the invention explain in more detail without restricting him to this.  

Examples

1. Syndet soap (composition in% by weight)

Production (example 2)

Cetyl stearyl alcohol, palmitin / stearic acid, oleyl alcohol oxyethylate, Tallow fatty alcohol oxyethylate and citric acid / stearyl alcohol / Pentaerythritol / coconut fatty acid mixed esters were combined in one Kneader melted at 70 ° C. Then the acyl isethionate and the sulfosuccinic acid salt, the zeolite NaA, the protein hydrolyzate Fatty acid condensate, citric acid and water added. After about 1 hour of further kneading at 70 ° C and cooling the mass to 45 ° C this was in a twin-screw extrusion press transferred, pelleted, twice through a 0.25 mm sieve pressed, extruded and at a head temperature of 50 ° C to Pressed strand, cut into pieces and in a molding press finished bar soap processed. Smooth, firm syndet Obtain soap bars.

Claims (4)

1. Shaped body cleanser with a content of 25-50 wt .-% of a C₁₂-C₁₈ acyl isethionate sodium salt, characterized in that additives to improve the processing and application properties
10-45% by weight of a sulfosuccinic acid monoalkyl (C₈-C₁₈) ester disodium salt,
5-15 wt .-% of a linear, saturated fatty acid with 12-22 carbon atoms and
5-20% by weight of a finely divided, water-insoluble alkali aluminum silicate of the zeolite type
are included. 2. Shaped body cleanser according to claim 1, characterized in that it additionally
1-15 wt .-% of a neutral fatty substance from the group of fatty alcohols with 12-22 carbon atoms, the fatty acid glycerides of C₁₂-C₂₂ fatty acids or the fatty acid (C₁₂-C₂₂) fatty alcohol (C₁₂-C₂₂) ester
contain. 3. Shaped body cleanser according to claim 1 or 2, characterized in that it additionally
1-10% by weight of nonionic surfactants of the polyglycol ether type with an HLB value of 12-18
contain. 4. Shaped body cleanser according to one of claims 1 to 3, characterized in that they additionally 1-10 wt .-% of Sodium salt of a water-soluble protein hydrolyzate fatty acid Condensation product included.