JPS6049099A - Soap composition - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The invention relates to creamy or liquid soap compositions, particularly, but not exclusively, to shaving creams.

British Patent No. 1,423,179, issued to the same applicant, discloses a pressurized shaving foam dispenser containing a liquid surfactant formulation and a liquefied propellant gas. The characteristic properties of this formulation are the high content of synthetic surfactants and the relatively low content of soaps, ie alkali metal salts of long-chain fatty acids. Such compositions are characterized by their scum-dispersing ability, i.e., preventing or dispersing scum formed from soap ingredients in foams that occur particularly in hard water areas, which is a particular drawback of known soap-based aerosol shaving creams. Characterized by having the ability. The disadvantage of forming scum is a disadvantage associated with known shaving creams which are woody soap-based products. Thus, for example, a shaving cream formulation can be dispensed from a tube, or from a pump-type dispenser comprising a container for the liquid or cream, a nozzle through which the liquid or cream can be dispensed, and a pump for ejecting the liquid or cream through the nozzle. It is desirable to apply shaving cream formulations. In this type of specialized dispenser, the nozzle and pump form a single dispenser that, when manually depressed, ejects liquid or cream through the nozzle.

However, it is difficult to formulate surfactant-based rather than soap-based creams with the required combination of properties, i.e., on the one hand, good foaming properties in both soft and hard water and, on the other hand, good stability. It was actually found that.

In particular, stability is difficult to achieve. In practice, many aqueous surfactant emulsions, especially those thickened by the addition of thickeners to provide the desired cream consistency, do not exhibit the required stability, especially when stored for long periods of time. lack

Attempts to thicken aqueous surfactant concentrates of the type disclosed in British Patent No. 1.423, 179 containing the small proportion of soap necessary for good foaming ability similarly We're screwed. One reason for this is believed to be that the aqueous surfactant emulsions disclosed in British Patent No. 1,423,1.79 are inherently unstable. However, this instability is not a major problem in aerosol packaging, provided that the emulsion can be easily re-established by shaking the can or two, as is the case in practice. However, given that the cream to be dispensed always requires the container to be shaken first, this shaking is not possible with shaving cream dispensed from a tube, such as the pump type described earlier. Other types of dispensers, such as dispensers, are very inconvenient.

The wood invention has the required good foaming properties in both hard and soft water,
Long-term stability, good anti-float properties.

It is based on the discovery of a range of thickened aqueous surfactant formulations that have a combination of float-dispersing properties. Broadly speaking, these formulations are thickened aqueous surfactant compositions containing the following components: (a) i) long chain (C1 □-013) Ethylene oxide and/or propylene oxide adduct of aliphatic alcohol, acid or amide, ii) Ethylene oxide and/or propylene oxide adduct of long chain (C-C) fatty acid 12 18 polyol ester, ■) C5-C12 A nonionic surfactant derived from an ethylene oxide and/or propylene oxide adduct of alkylphenol, ii) polyoxyalkylene glycol, and m) an aliphatic ether containing a long chain (C12-018) alkyl group; (a) 3-7 %, preferably 4-6%, of long chains (C-
C) an alkali metal or alkanolamine salt, preferably a triethanolamine salt, of a fatty acid, preferably stearic acid, palmitic acid or myristic acid; (3-6%, preferably 4-5%) long chain (C-
C) Alcohol, preferably cetyl alcohol or myristyl alcohol, and or C12-
018 Ampholytic surfactants selected from alkyl-substituted amino acids, betaines, sulfobetaines, imidacillins and imidazoles; (1) Long chain (C1
2-018) Fatty acid alkanolamide; (E) 0.1
- 10% by weight of polyacrylic alcohols, waxes or paste-grade long-chain (C12'18) fatty acid amides, carboxymethylcellulose, starches, self-emulsifying waxes, water-dispersible vinyl resins or other polymeric resins, or e.g. Clay minerals such as montmorillonite or bentonite.

The surfactant creams of the present invention are sometimes present in addition to small amounts of conventional additives such as antioxidants, preservatives, fragrances or fragrances, colorants, clay conditioners, humectants, emollients and lubricants. may contain other functional ingredients. In particular, sulfate ester salts of long-chain (C12-018) aliphatic alcohols, alkyl sulfate salts, alkyl succinate salts, alkyl ether sulfur salts, as long as the above-mentioned components do not perform the functions of foaming agents and foam stabilizers. , alkyl ether succinate, long chain (C-
C) Highly foaming anionic surfactants selected from alkylamides/sulfonates, long alkylamides sulfonates, and carboxylated alcohol ethoxylates, and foam stabilizers.

Such highly foaming anionic surfactants and/or foam stabilizers are present in amounts up to about 10% by weight, preferably 2-8% by weight.

All the above percentages are weight percentages based on the total weight of the aqueous composition. Generally, the formulation is 30-60%
of dry weight, usually in the range of 34-45% dry weight.

The present invention provides, together with the composition itself, the composition in packaged form, particularly a shaving cream tube comprising a squeezable tube container with a dispensing nozzle and a thickened aqueous surfactant composition contained therein. Pre-packaged articles shall extend to liquid soap dispensers of the type containing a container for liquid soap and a manual pump and dispensing nozzle for dispensing the liquid soap formulation from the dispenser.

To produce the thickened aqueous surfactant composition of the present invention 1
The various components can be mixed in any convenient order, eg, under conditions such as high speed mixing or agitation that are most effective to produce a homogeneous and stable emulsion.

Typical shaving cream formulations according to the present invention include: All percentages indicate weight percentages.

Blend 1% polyethylene glycol cetyl ether (Brij
58) 10.00 Triethanol Amine 3.00 Glycerin 5.00 Palmitic Acid 4.00 Lauric Diethanolamide e, o.

Cetyl alcohol 4.00 Ethoxylated lanolin 2.00 Nonionic self-emulsifying wax (Polawax) thickener 4.00 Preservative (Nipastat), 0.20 Fragrance o,
35 Water 6145 After mixing in a high-speed blender, a white, clean, stable emulsion was formed. This product was filled into 71 auxiliary pump type liquid soap dispensers.

Storage tests showed that it could be stored for up to 9 months at 20° C. without segregation or any other deterioration of properties. It has been shown that it can be stored for even longer at low temperatures, for example at 5°C, for up to 14 months.

% Polyethylene glycol cetyl ether (Brij 58) 9.40 Triethanol Amine 4.84 Glycerin 4.70 Palmitic acid 5.64 Lauric acid diethanolamide 5.64 Ethoxylated lanolin 1.88 Cetyl alcohol 3.75 Polyacrylic acid thickener 4.00 Coconethanolamide (C)
D) Foam stabilizer 1.00% silver aliphatic alcohol sulfate ester (Texa
pon C-5,) Highly foaming agent 5.00 Antioxidant
0.20 Fragrance 0.35 Water 53.50 100.00 This composition corresponds to Formulation 1 in terms of wood quality, but contains highly foaming anionic surfactants (7exapon C9S,
) and foam stabilizer Comperlan Kn, and polyacrylic acid instead of Pa Iavax as thickener.

The finished product is a creamy stable pearlescent white emulsion with good whipping properties and good stability. The viscosity of the emulsion is greater than Formulation I, making this formulation ideally suited for dispensing from a tube as a shaving cream. Storage test is 20
At the end of 10 months at 0.degree. C., there was a slight color loss, but there was still no separation of the emulsion. No color loss was avoided on storage at 5°C.

Blend - 3% polyoxyethylene cetyl ether (Brij 5
B) 9.4Q ]・liethanolamine 4.94 Glycerin 4.70 Valmitine 5,84 Lauritetraic acid diethanolamide 5.64 Ethoxylated lanolin 1.88 Cetyl alcohol 3.75 Comperlan KDl, 00 Texaspon C-S, 5.0O Nipastat O, 20, fragrance 0.35 ethylene glycol monostearate (self-emulsifying wax), thickener 1.00 water y■Zheng L 100.00 Instead of polyacrylic acid as a thickener This formulation corresponds to formulation 2 wood-wise, except that a self-emulsifying wax (ethylene glycol monostearate) was used. A viscous creamy pearlescent white emulsion was obtained.

It shows good foaming properties and good stability.

Blend-A % Polyethylene glycol cetyl ether (Bri
j 58) 9.40 Triethanolamine 5.50 Glycerin 4.70 Palmitic acid 5.64 Lauric acid diethanolamide 5.84 Ethoxylated lanolin 1.88 Cetyl alcohol 3.75 Polyacrylic acid, thickener 2.00 Clay Mineral, Bentonite 0.20 Coco Jetanolamide (Comperlan KD
), foam stabilizer 1.00 Mixed long chain aliphatic alcohol sulfate ester salt (Texa
pon C, S,), high foaming agent 5.00 preservative (
NipaStat) 0.20 Antioxidants 0.20 Fragrances 0.35 Water 54.54 100.00 In this formulation, which corresponds to Formulation 2, bentonite improves the consistency, viscosity, and stability of the emulsion; It is intended to be a viscous or creamy emulsion suitable for packaging as a shaving cream. This cream emulsion showed good foaming properties, improved "skin feel" and good long-term storage, especially at room temperature (20 DEG C.).

Many substitutions and variations may be made in the foregoing recipes without departing from the scope of the present invention. In particular, 4L[(C1
2-C13) Ethylene oxide or propylene oxide adducts of aliphatic alcohols are suitable as nonionic components, but other specified nonionic surfactants can be used instead. The same applies to the other components a), t), d), and e), and the same applies to the highly foaming anionic surfactant, which is an optional but desirable component. Such substitutions and modifications can be made by those skilled in the art without departing from the scope of the invention as defined in the claims.

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Claims (1)

[Scope of Claims] (i) Water and a) 8-12% of i) C-C fatty acids, 12 13 fatty alcohols, ethylene oxide and/or propylene oxide adducts of fatty acid amides; 1i) C1□-C
ethylene oxide and/or propylene oxide adducts of esters of 18 fatty acids with polyols; 1ii) C5
- ethylene oxide and/or propylene oxide adducts of C12 alkylphenols; iv) polyoxyalkylene glycols; and V) aliphatic ethers containing long chain alkyl groups having 12-18 carbon atoms. a) Alkali metal salts or alkanolamine salts of Cl2-C18 fatty acids constituting 3-7%, and (d) C-C fatty acid alkyl and or long chain (C-C) alkyl constituting 3-6%. group 12 18 an amphoteric surfactant selected from substituted amino alcohols, betaines, sulfobetaines, imidacillins, and imidazoles; -to% of polyacrylic alcohol, wax or paste grade long chain (C1□-C98) fatty acid amide,
a water-dispersible thickener selected from carboxymethyl cellulose, self-emulsifying waxes, water-dispersible synthetic resins, and clay minerals, the percentages being based on the total weight of the composition; A thickened aqueous surfactant composition characterized in that the total dry weight is 30-60% by weight. 2, i) Long chain (C-C) aliphatic alcohol sulfur 12 1
8 Acid ester salts, alkyl sulfates, and alkyl ether sulfates, ii) Succinate ester salts of long chain (C1□-018) aliphatic alcohols, and ether succinates, 1
An anionic surfactant selected from ii) long chain (c-C'1 alkyla 12 18 minosulfonate and long chain alkylamide sulfonate) and i) carboxylated alcohol ethoxylate is added to all of the compositions. Composition according to claim 1, characterized in that it additionally contains up to 10% by weight. 3. The anionic surfactant is based on the total amount of the composition, 3.
Composition according to claim 2, characterized in that it is present in an amount of -8% by weight. 4. Prepackaged shaving cream, characterized in that it consists of a squeezable tube with a dispensing nozzle and a composition according to any of claims 1 to 3 contained therein. tube. 5. A container with a dispensing nozzle, a pump manually operable to dispense the contents of the container through the nozzle, and claim 1 contained herein as a liquid soap.
A prepackaged liquid soap dispenser, characterized in that it consists of a composition according to any one of items 1 to 3.