JPH04173729A - Liquid skin detergent composition - Google Patents

Abstract

PURPOSE:To obtain the subject composition, containing a specific acrylic resin, a specified cationic polymer compound and a higher fatty acid soap in respective specified amounts, excellent in foaming properties and creaminess of bubbles in use and good in rinsing properties. CONSTITUTION:A liquid skin detergent composition containing 0.05-4wt.% acrylic resin composed of 100-20000 recurring units expressed by formula I (R is H or methyl; X is H, alkali metal, ammonium, etc.), 0.02-3.0wt.% at least one selected from cationic polymer compounds composed of 100-5000 recurring units expressed by formula II, cationic polymer compounds composed of the total 500-1000 recurring units expressed by formulas III and IV, and 5-30wt.% higher fatty acid soap. The aforementioned composition has excellent foam performance and is simultaneously capable of smoothing the skin after use without sliminess of the skin.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention provides a novel liquid skin cleansing composition, more specifically, it provides a novel liquid skin cleansing composition, which has excellent foaming properties and creamy foam properties, has good smudge properties, and has a smooth texture after use. The present invention relates to a liquid skin cleansing composition that has excellent skin smoothness.

BACKGROUND OF THE INVENTION Conventionally, synthetic anionic surfactants such as higher fatty acid soaps, sodium σ-olefin sulfonate, and alkyl ether sulfates have been known as cleaning active ingredients used in liquid skin cleansers. However, these active cleaning ingredients are not necessarily fully satisfactory from a practical standpoint; for example, higher fatty acid soaps have good rinsability and a refreshing feeling after use, but have the disadvantage of poor foaming properties. However, although synthetic anionic surfactants such as sodium α-olefin sulfonate and alkyl ether sulfate have good foaming properties, they have the drawbacks of poor foam creaminess, rinsability, and refreshing feeling after use. ing.

Therefore, in liquid skin cleansers, the above-mentioned higher fatty acid soaps and synthetic anionic surfactants are rarely used alone, and are usually made by combining higher fatty acid soaps with synthetic anionic surfactants, nonionic surfactants, etc. are used in combination.

However, these combinations do not sufficiently meet the characteristics required of liquid cleaning agents, such as excellent foaming properties, creamy foam properties, and rinsability during use, as well as a good refreshing feeling after use. The current situation is that we cannot obtain anything that satisfies us.

On the other hand, attempts have been made to add cationic polymer compounds for the purpose of producing rich foaming (Japanese Unexamined Patent Publication No. 61
-7399 Publication). However, even in this case, it is difficult to sufficiently increase the creaminess of the foam, and when a cationic polymer compound is used, a highly hydrophobic composite formed by this compound and soap There are disadvantages such as the body remains on the skin after use and the smoothness of the skin after use is impaired.

Problems to be Solved by the Invention The present invention overcomes the drawbacks of conventional liquid skin cleansers, has good foaming properties and creamy foam properties during use, has good rinsability, and is easy to use. The purpose of this invention is to provide a liquid skin cleansing composition that provides excellent skin smoothness afterwards.

Means for Solving the Problems As a result of intensive research to develop a liquid skin cleansing composition having the above-mentioned preferable properties, the present inventors discovered that a specific acrylic resin and a specific cationic polymer compound. We have discovered that by containing specific amounts of each higher fatty acid soap, a skin cleansing agent can be obtained that has good foaming properties, creamy foam properties, and rinsing properties during use, and also has good skin smoothness after use. The present invention was made based on this knowledge.

That is, the present invention is based on the general formula (A) (wherein R is a hydrogen atom or a methyl group, and X is a hydrogen atom, an alkali metal, an ammonium group, an alkanol-substituted ammonium group, or an alkyl group having 1 to 4 carbon atoms) One or more repeating units represented by 100~
Acrylic resin composed of 20,000 pieces 0.05 ~
4% by weight, a cationic polymer compound composed of 100 to 5,000 repeating units represented by formula (BXa) and a total of 500 to 10,000 repeating units represented by formula (b) and repeating units represented by formula. 0.02 to 3.0% by weight of at least one selected from among cationic polymer compounds composed of and (C)
The present invention provides a liquid skin cleansing composition characterized by containing 5 to 30% by weight of a higher fatty acid.

The present invention will be explained in detail below.

The acrylic resin used as component (A) of the composition of the present invention has the general formula (I) as a repeating unit, and the repeating units include acrylic acid, its alkali metal salt, ammonium salt, Mention may be made of units derived from alkanol-substituted ammonium salts, methacrylic acid, its alkali metal salts, ammonium salts, alkanol-substituted ammonium salts, alkyl esters of acrylic acid or methacrylic acid. This acrylic resin may be a polymer consisting of these repeating units, or a copolymer consisting of two or more of these repeating units. And the degree of polymerization is 10
A value within the range of 0 to 20,000 is suitable. Particularly preferred are copolymers of acrylic acid and methacrylic acid, such as about 70% ethyl acrylate.
00 and about 3,000 sodium methacrylate, and a copolymer composed of about 7,000 ethyl acrylate and about 3,000 triethanolammonium methacrylate.

One type of acrylic resin as component (A) may be used, or
Two or more types may be used in combination, and the amount thereof needs to be selected within the range of 0.05 to 4% by weight, preferably 0.1 to 2% by weight, based on the total amount of the composition. If this amount is less than 0.05% by weight, the creaminess of the foam and the effect of imparting smoothness to the skin after washing will not be sufficiently exhibited, while if it exceeds 4% by weight, the rinsing properties of the foam will decrease and the skin will become soft after use. Causes stickiness.

In the composition of the present invention, as component (B), a cationic polymer compound composed of 100 to 5000 repeating units represented by the general formula % formula % or a repeating unit of formula (IV) and a repeating unit represented by the formula A water-soluble cationic polymer compound having at least one quaternary nitrogen selected from copolymer-type cationic polymer compounds composed of a total of 500 to 10,000 repeating units is used.

Examples of the cationic polymer compound consisting only of repeating units represented by the general formula (IV) include Marquat 1OO (manufactured by Merck & Co., Ltd., trade name);
) and (IV) are commercially available, such as Marquat 550 (manufactured by Merck & Co., trade name).

One type of cationic polymer compound as component (B) may be used, or two or more types may be used in combination, and the blending amount is 0.02 to 3.0% by weight based on the total amount of the composition. %, preferably in the range of 0.05 to 1.0% by weight. If this amount is less than 0.02% by weight, the foamability and smoothness of the foam will not be sufficient;
If it exceeds 20%, the viscosity tends to become too high and good liquid properties cannot be obtained.

In the composition of the present invention, it is necessary to use a higher fatty acid soap as component (C), and preferred examples of this soap include alkali metal salts and organic amine salts of higher fatty acids having 8 to 22 carbon atoms.

The higher fatty acids may be saturated fatty acids or unsaturated fatty acids, and may be linear or branched, but especially carbon Straight chain saturated fatty acids of number 10-18 are preferred. Examples of the salts include alkali metal salts such as lithium salts, potassium salts, and sodium salts, and organic amine salts such as mono-, di-, and trialkanolamine salts having alkyl salts having 2 to 4 carbon atoms.

Specific examples of such soaps include myristic acid,
Examples include lithium salts, potassium salts, sodium salts, and triethanol alkyl salts of single fats such as palmitic acid and stearic acid, and mixed fatty acids such as coconut oil fatty acids and beef tallow fatty acids.

In the composition of the present invention, one type of these soaps may be used, or two or more types may be used in combination, and the amount blended is 5 to 30% by weight based on the total amount of the composition.
, preferably in the range of 8 to 25% by weight. If this amount deviates from the above range, the object of the present invention cannot be fully achieved.

There are no particular restrictions on the method for preparing the liquid skin cleansing composition of the present invention, and it can be prepared in liquid or cream form according to commonly used methods. At this time, various components may be added as necessary within a range that does not impair the purpose of the present invention. Components used as necessary include, for example, higher fatty acids having 8 to 22 carbon atoms;
Higher alcohols and their esters and hydrocarbons,
Lanolin derivatives, lenotin and its derivatives, /licones, glycerin, sorbitol, maltitol, low molecular weight polyethylene glycol, propylene glycol, t
, 3-phthylene gellicol, humectants such as sodium pyrrolidonecarboxylate, various surfactants, yang oil fatty acid monoethanolamide, coconut oil fatty acid jetanolamide, or sodium chloride, sodium sulfate, magne/rum chloride, magnesium sulfate. pH buffering agents such as glycine, sodium bicarbonate, potassium dihydrogen phosphate, drugs such as glycyrrhizin, allantoin, aloe powder, vitamins, animal and plant extracts, various fragrances, purified water, etc. It will be done.

These additive components may be used alone or in combination of two or more, or may be blended at an appropriate stage of composition preparation.

Effects of the Invention The liquid skin cleansing composition of the present invention has soap as its main component, and also contains a specific acrylic resin and a cationic polymer compound, and has excellent foaming performance and is effective against skin irritation. It does not have a slimy feel and leaves the skin smooth after use, making it extremely valuable as a product.

Examples Next, the present invention will be explained in more detail with reference to examples.
The present invention is not limited in any way by these examples.

The properties of the composition were evaluated as follows.

(1) Using foaming CaCQ2 and artificial hard water adjusted to German hardness of 3°DH, prepare a solution 20+IQ with a sample concentration of 3% by weight, using a test tube with a 100+mff stopper, and at a temperature of 25°C.
Shake 20 times for 10 seconds under the following conditions, measure the amount of foam 1 minute later, and evaluate the foaming property according to the following criteria.
child.

◎: Very good foaming, foam volume 70 mQ or more ○: Good foaming, foam volume 50 mQ or more and less than 70 mQ △: Normal foaming, foam volume 30 + n12 or more 50 m1
Less than 2 ×: Poor foaming Foam volume less than 30 mQ (2) Usability For each sample, seven panelists evaluated the usability and
That is, the creaminess of the foam, the absence of a slimy feeling during rinsing, and the smoothness of the skin after use were evaluated according to the following criteria.

◎: Very good, if 6 or more out of 7 people answered that it was good ○: Good, if 4 to 5 out of 7 people answered that it was good △: Average, 2 to 3 out of 7 people answered that it was good If 0 to 1 out of 7 people answered ``Good'', then 0 to 1 out of 7 people answered ``Good''. , the performance was evaluated. The results are shown in Table 1.

As is clear from Table 1, the liquid cleansing composition of the present invention is excellent in all of its foaming properties, creamy foam, no slimy feeling during rinsing, and smooth skin after use.

Dormitory Examples 6 to 12 Liquid skin cleansing compositions having the compositions shown in Table 2 were prepared and their performance was evaluated. The results are shown in Table 2.

As is clear from Table 2, all of the liquid skin cleansing compositions of the present invention have excellent performance.

Claims (1)

[Claims] 1 (A) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (In the formula, R is a hydrogen atom or a methyl group, 100 to 100 repeating units represented by one or more repeating units (alkyl group having 1 to 4 carbon atoms)
Acrylic resin composed of 20,000 pieces 0.05 ~
4% by weight, (B) A cationic polymer compound composed of 100 to 5000 repeating units represented by formula (a) ▲ Numerical formula, chemical formula, table, etc. ▼ and formula (b) ▲ Numerical formula, chemical formula, etc. There are tables, etc. ▼ Repeating units and formulas represented by ▲ Numerical formulas, chemical formulas, tables, etc. ▼ 1. A liquid skin cleansing composition comprising 0.02 to 3.0% by weight of one type of soap and 5 to 30% by weight of (C) higher fatty acid soap.