JP4744842B2 - Liquid detergent for skin - Google Patents

Description

  The present invention relates to a skin liquid cleaning agent, and more particularly to a skin liquid cleaning agent that has good foaming and foam quality, is excellent in feeling of use, and does not have a feeling of squeezing or squeezing during rinsing.

  Conventionally, as a liquid cleaning agent for skin, one containing a higher fatty acid salt has been used. Such a cleaning agent is preferred in that it gives a refreshing feel after washing, but has a drawback that the feeling of skin tightness and dryness after use is very strong. This is considered to be caused by excessive washing of oil during washing.

  Therefore, recently, N-acylated amino acid surfactants have been used as surfactants with weak skin irritation. However, the skin cleansing agent containing such a surfactant has a problem that it has a feeling of squeezing after rinsing, although it has a weak feeling of squeezing after use. Moreover, the present condition is that the smooth feeling is not obtained after use by any cleaning agent.

  Furthermore, a skin cleanser formulated with silicone oil is also known in order to achieve both cleansing performance and a good feeling of use (freshness, moist feeling, etc.) during and after rinsing. For example, a skin cleansing composition containing linear silicone has been proposed. (For example, refer patent document 1) Moreover, the detergent composition containing the non-hydrolyzable block copolymer which uses a linear polysiloxane polyoxyalkylene block as a repeating unit is also proposed. (For example, see Patent Document 2)

However, in the cleaning composition containing the linear silicone, the feeling of use is improved, but the refreshing feeling at the time of rinsing is still insufficient. In addition, in the polyorganosiloxane in which a part of dimethylsiloxane described in Patent Document 2 is modified with a polyether group or an amino group, either the feeling of use or the refreshing feeling is improved, but both feelings are satisfied. Things have not yet been obtained.
JP-A-6-17097 JP-A-6-49486

  The present invention has been made to solve these problems, and an object of the present invention is to provide a liquid cleaning agent for skin that has high cleaning performance and is excellent in use feeling and refreshing feeling during rinsing.

  As a result of intensive studies to achieve the above object, the present inventors have found that blending a specific resinous polyorganosiloxane is extremely effective in improving the feeling of use such as a refreshing feeling and a moist feeling. As a result, the present invention has been completed.

That is, the liquid detergent for skin of the present invention has (A) average composition formula:
[(R ¹ ) ₂ R ² SiO _1/2 ] _a [SiO _4/2 ] _c (wherein R ¹ represents a methyl group, R ² represents a methyl group, a monovalent non-valent having 6 to 30 carbon atoms) Represents a group selected from a substituted hydrocarbon group and 2-phenylpropyl group, a / c is 0.2 to 4, and c is a number of less than 30). Resin-like polyorganosiloxane of 0.1 to 1.0 Pa · s, 0.1 to 15% by weight, (B) 2 to 40% by weight of fatty acid soap, and (C) 0.01 to 20% by weight of a cation conditioning agent, And (D) each containing water.

  According to the liquid detergent for skin of the present invention, since the resin-like polyorganosiloxane having a specific composition formula is included, the foaming is good and the skin is highly cleanable, and the skin is refreshed after washing. The balance between feeling and moist feeling is good, and the feeling of use is extremely excellent.

  Hereinafter, embodiments of the liquid detergent for skin according to the present invention will be described. In the embodiment of the present invention, the skin liquid cleaning agent means a liquid cleaning agent directly used for cleaning the skin among general body cleaning agents. More specifically, it includes body soaps, body cleaners called body shampoos, palm soap hand soaps, and facial cleansers.

The liquid cleansing agent for skin according to the embodiment of the present invention has (A) an average composition formula:
[(R ¹ ) ₂ R ² SiO _1/2 ] _a [(R ³ ) ₃ SiO _1/2 ] _b [SiO _4/2 ] _c 0.1-15 wt% of resinous polyorganosiloxane represented by _c , (B) 2-40 wt% fatty acid soap, (C) 0.1-20 wt% cationic conditioning agent, and (D) water. In the formula, R ¹ and R ³ each represent a group selected from a hydrogen group, an aryl group, and a monovalent hydrocarbon group having 1 to 3 carbon atoms, and may be the same or different. R ² represents the same group as R ¹ , a monovalent substituted or unsubstituted hydrocarbon group having 4 to 30 carbon atoms, or an alkoxy group or aralkyl group having 1 to 24 carbon atoms. Further, (a + b) / c is 0.4 to 4, a / c is 0.2 to 4, b / c is 0 to 3.8, and c is a number less than 30.

  Resin-like polyorganosiloxane as component (A) is a component that characterizes the present invention, and can impart a good feeling during use and a feeling of slipping to the skin and a feeling of refreshing when rinsing. it can.

In the average composition formula indicating the component (A), R ¹ is a hydrogen atom, a methyl group having 1 to 3 carbon atoms, an ethyl group, a propyl group, or the hydrogen atoms of these alkyl groups are partially halogen atoms. A group selected from a monovalent hydrocarbon group such as a group substituted with an aryl group such as a phenyl group and a tolyl group, and preferably a methyl group. R ² is the same group as R ¹ , a monovalent substituted or unsubstituted hydrocarbon group having 6 to 30 carbon atoms, or a phenyl group or a lower alkyl substituted phenyl group having up to about 4 carbon atoms, An aralkyl group in which the alkyl part is a lower alkyl group having up to about 4 carbon atoms, such as 2-phenylethyl group, 2-phenylpropyl group, or alkoxy group having 1 to 24 carbon atoms, such as methoxy group, ethoxy group, propoxy group, A group selected from a butoxy group and the like is shown. These 1 type (s) or 2 or more types are used. R ³ is the same hydrogen group or monovalent hydrocarbon group as R ¹ , preferably a methyl group or an ethyl group.

In the average composition formula, c tetrafunctional siloxy units _{[SiO 4/2] c} is less than 30. When the value of c is 30 or more, the molecular weight of the component (A) becomes too large, not only the compatibility with other components is lowered, but also the fluidity becomes unsatisfactory. Viscosity in the range of 1.0 Pa · s (25 ° C.) cannot be obtained. The value of c is more preferably 2-20.

Moreover, monofunctional siloxy number of units (a + b) as the ratio between the number of tetrafunctional siloxy units the value of (a + b) / c is preferably in the 0.4 to 4. If this value is less than 0.4, a viscosity in the range of 0.01 to 1.0 Pa · s (25 ° C.) cannot be obtained, so that good performance cannot be obtained. Can not. Further, the value of a / c is preferably 0.2 to 4, and the value of b / c is preferably 0 to 3.8. If these values are out of the above range, sufficient characteristics cannot be obtained.

  Specific examples of such component (A) include resinous methylpolysiloxanes having both molecular chain ends blocked with trimethylsiloxy groups, and resinous polypolysiloxanes having both molecular chain ends blocked with dimethyl-2-phenylpropyl groups. Siloxane, Resin-like polyalkylsiloxane blocked at both ends of molecular chain with alkyl group, Resin-like methylhydrogenpolysiloxane blocked at both ends of molecular chain with dimethylhydrogensiloxy group and Trimethylsiloxy group, both ends of molecular chain And resin-like methylphenylhydrogenpolysiloxane each blocked with a methylphenylalkyl group. The viscosity of these (A) resinous polyorganosiloxanes is desirably in the range of 0.01 to 1.0 Pa · s at 25 ° C.

  The resin-like polyorganosiloxane as component (A) is, for example, a hydrolysis condensate obtained by hydrolyzing a tetraalkoxysilane such as tetramethoxysilane or tetraethoxysilane in the presence of water or water and alcohol. Can be obtained by blocking the end of each with tetramethyldisiloxane or hexamethyldisiloxane. It can also be obtained by hydrolyzing tetraalkoxysilane and chlorosilane such as trimethylchlorosilane and dimethylhydrogenchlorosilane in the presence of water or alcohol. Furthermore, a desired structure can be obtained by introducing an organic group from a resinous organohydrogenpolysiloxane and a group containing any allyl group using a hydrosilylation reaction by a known method. Among these, the use of a resinous polyorganosiloxane having a dimethyl-2-phenylpropyl group or a dimethylalkyl group (having 6 to 30 carbon atoms) introduced therein is preferred.

  The fatty acid soap of component (B) used in the embodiment of the present invention is preferably a saturated or unsaturated linear or branched fatty acid soap having 10 to 22 carbon atoms. The use of a fatty acid soap having 12 to 18 carbon atoms is more preferable, and particularly, the use of a fatty acid soap having a ratio of a fatty acid having 12 to 14 carbon atoms and a fatty acid having 16 to 18 carbon atoms is 1/1 to 10/1. . Specific examples of preferable fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid and the like.

  In addition, as a cation used for the neutralization of fatty acids in producing soap, alkali metal ions such as sodium and potassium, alkaline earth metal ions such as magnesium, triethanolamine, ammonia and the like can be mentioned. Or triethanolamine is more preferable. In the embodiment of the present invention, these fatty acid soaps may be used alone or in admixture of two or more. The fatty acid soap may be prepared before blending with the cleaning composition of the present invention, but both fatty acid and alkali may be blended into the cleaning composition and reacted in the composition to form fatty acid soap. .

  In the embodiment of the present invention, the resin-like polyorganosiloxane that is the component (A) is blended at a ratio of 0.1 to 15% by weight with respect to the whole liquid detergent for skin. More preferably, it mix | blends in the ratio of 0.2 to 10 weight%. Moreover, the fatty acid soap which is (B) component is mix | blended in the ratio of 2 to 40 weight% with respect to the whole liquid detergent for skin. More preferably 5 to 20% by weight, particularly preferably 10 to 20% by weight. The weight blending ratio of the (A) component and the (B) component ((A) component / (B) component) is preferably in the range of 1/30 to 1/5, and 1/20 to 1 / A range of 10 is more preferred. When the blending ratio is out of the range of 1/30 to 1/5, it is not possible to obtain a liquid detergent for skin that satisfies both the feeling during use and the refreshing feeling during rinsing.

  The (C) cationic conditioning agent used in embodiments of the present invention is selected from the group consisting of cationic surfactants, cationic polymers, and mixtures thereof. These (C) cationic conditioning agents are contained in the liquid detergent for skin in an amount of 0.01 to 20% by weight, preferably 0.05 to 8% by weight, more preferably 0.1 to 3% by weight. The

As the cationic surfactant, those represented by the following general formula (1) are preferably used.

In the formula, at least one of R ⁴ , R ⁵ , R ⁶ and R ⁷ is an aliphatic group having 8 to 30 carbon atoms or an aromatic group having 22 or less carbon atoms, an alkoxy group, Selected from a polyoxyalkylene group, an alkylamide group, a hydroxyalkyl group, an aryl group or an alkylaryl group, the rest being independently an aliphatic group having 1 to 22 carbon atoms, or 22 or fewer carbon atoms Selected from an aromatic group, an alkoxy group, a polyoxyalkylene group, an alkylamide group, a hydroxyalkyl group, an aryl group or an alkylaryl group having X is a salt selected from halogen (eg, chloride, bromide), acetate, citric acid, lactate, glycolate, phosphate, nitrate, sulfonate, sulfate, alkylsulfate and alkylsulfonate radicals, etc. Forming anions.

Aliphatic groups can contain other groups such as ether linkages and amino groups in addition to carbon and hydrogen atoms. Furthermore, long-chain aliphatic groups such as those having 12 or more carbon atoms may be saturated or unsaturated. R ⁴ , R ⁵ , R ⁶ and R ⁷ are preferably independently selected from an alkyl group having 1 to 22 carbon atoms.

  Specific examples of useful cationic surfactants include materials having the following CTFA names: quaternium-8, quaternium-14, quaternium-18, quaternium-18 mesosulfate, quaternium-24, and mixtures thereof, It is not limited to these. “CTFA” represents Cosmetics, Toiletry, and Fragrance Association, Inc.

  Among the cationic surfactants represented by the general formula (1), those containing at least one alkyl chain having at least 16 carbon atoms in the molecule are preferable. Examples of such cationic surfactants are: for example, trade name INCROQUAT TMC-80 manufactured by Croda, or behenyltrimethylammonium chloride available as ECONOL TM22 from Sanyo Kasei. Cetyltrimethylammonium chloride available under the trade name CA-2350 from Nikko Chemicals; hydrogenated tallow alkyltrimethylammonium chloride, dialkyl (14-18) dimethylammonium chloride, ditallowalkyldimethylammonium chloride, two Hydrogenated tallow alkyldimethylammonium chloride, distearyldimethylammonium chloride, dicetyldimethylammonium chloride, di (behenyl / arachidyl) dimethylammonium Loride, dibehenyldimethylammonium chloride, stearyldimethylbenzylammonium chloride, stearylpropylene glycol phosphate dimethylammonium chloride, stearoylamidopropyldimethylbenzylammonium chloride, stearoylamidopropyldimethyl (myristyl acetate) ammonium chloride, and N- (stearoylcholaminoformylmethyl) ) Pyridinium chloride and the like, but not limited thereto.

Preferred cationic surfactants contain one or more aromatic, ether, ester, amide, or amino moieties in which at least one of the substituents is present as a substituent or bond in the radical chain, and R ^At least one of the ^{3 to} R ⁶ groups is an alkoxy group (preferably an alkoxy group having 1 to 3 carbon atoms), a polyoxyalkylene group (preferably a polyoxyalkylene group having 1 to 3 carbon atoms), an alkylamide group, or a hydroxyalkyl group. , Alkyl ester groups, and hydrophilically substituted cationic surfactants containing one or more hydrophilic moieties selected from combinations thereof. The hydrophilically substituted cationic surfactant preferably contains 2 to 10 non-ionic hydrophilic moieties located within the above range. Preferred cationic surfactants that are hydrophilically substituted include those represented by the following formulas (2) to (8):

式（２）中、ｎは８〜２８、ｘ＋ｙは２〜４０の数を表し、Ｚ¹は短鎖アルキル基、好ましくは炭素数１〜３のアルキル基、より好ましくはメチル基、あるいは（ＣＨ_２ＣＨ_２Ｏ）_ｚＨである。ｘ＋ｙ＋ｚは６０以下、Ｘは前記塩形成アニオンである。

In formula (2), n represents 8 to 28, x + y represents a number of 2 to 40, Z ¹ is a short-chain alkyl group, preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group, or (CH a ₂ CH _{2 O) z} H. x + y + z is 60 or less, and X is the salt-forming anion.

式（３）中、ｍは１〜５の数、Ｒ^８、Ｒ^９およびＲ¹⁰のうち１つ以上は、それぞれ独立して炭素数１〜３０のアルキル基であり、その他はＣＨ_２ＣＨ_２ＯＨであり、Ｒ¹¹、Ｒ¹²およびＲ¹³のうち１つまたは２つはそれぞれ炭素数１〜３０のアルキル基であり、その他はＣＨ_２ＣＨ_２ＯＨである。Ｘは前記塩形成アニオンである。

In Formula (3), m is a number of 1 to 5, one or more of R ⁸ , R ⁹ and R ¹⁰ are each independently an alkyl group having 1 to 30 carbon atoms, and the others are CH ₂ CH _2. OH, and one or two of R ¹¹ , R ¹² and R ¹³ are each an alkyl group having 1 to 30 carbon atoms, and the other is CH ₂ CH ₂ OH. X is the salt-forming anion.

式（４）および（５）のそれぞれにおいて、Ｚ^２はアルキル基、好ましくは炭素数１〜３のアルキル基より好ましくはメチル基であり、Ｚ^３は短鎖ヒドロキシアルキル基好ましくはヒドロキシメチル基またはヒドロキシエチル基であり、ｐおよびｑはそれぞれ２〜４の整数で、好ましくは２〜３、より好ましくは２である。Ｒ¹⁴およびＲ¹⁵は、それぞれ置換または非置換炭化水素、好ましくは炭素数１２〜２０のアルキル基またはアルケニル基、Ｘは前記の塩形成アニオンである。

In each of the formulas (4) and (5), Z ² is an alkyl group, preferably a methyl group, more preferably an alkyl group having 1 to 3 carbon atoms, and Z ³ is a short-chain hydroxyalkyl group, preferably a hydroxymethyl group or It is a hydroxyethyl group, and p and q are each an integer of 2 to 4, preferably 2 to 3, more preferably 2. R ¹⁴ and R ¹⁵ are each a substituted or unsubstituted hydrocarbon, preferably an alkyl or alkenyl group having 12 to 20 carbon atoms, and X is the salt-forming anion.

式（６）中、Ｒ¹⁶はヒドロカルビル基、好ましくは炭素数１〜３のアルキル基より好ましくはメチル基であり、Ｚ^４およびＺ^５はそれぞれ短鎖ヒドロカルビル基、好ましくは炭素数２〜４のアルキル基またはアルケニル基より好ましくはエチル基であり、ｒは２〜４０好ましくは７〜３０の数、Ｘは前記の塩形成アニオンである。

In the formula (6), R ¹⁶ is a hydrocarbyl group, preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group, and Z ⁴ and Z ⁵ are each a short-chain hydrocarbyl group, preferably 2 to 4 carbon atoms. An alkyl group or an alkenyl group is more preferably an ethyl group, r is a number of 2 to 40, preferably 7 to 30, and X is a salt-forming anion.

式（７）中、Ｒ¹⁷およびＲ¹⁸は、それぞれ炭素数１〜３のアルキル基より好ましくはメチル基、Ｚ^６は炭素数１２〜２２のヒドロカルビル基、アルキルカルボキシ基またはアルキルアミド基である。Ａはたんぱく質、好ましくはコラーゲン、ケラチン、乳たんぱく質、シルク、大豆たんぱく質、小麦たんぱく質、またはそれらの加水分解型であり、Ｘは前記塩形成アニオンである。

In formula (7), R ¹⁷ and R ¹⁸ are each preferably a methyl group, more preferably an alkyl group having 1 to 3 carbon atoms, and Z ⁶ is a hydrocarbyl group, alkylcarboxy group or alkylamide group having 12 to 22 carbon atoms. A is a protein, preferably collagen, keratin, milk protein, silk, soy protein, wheat protein, or a hydrolyzed form thereof, and X is the salt-forming anion.

式（８）中、ｓは２または３、Ｒ¹⁹およびＲ²⁰は、それぞれ炭素数１〜３のヒドロカルビル基好ましくはメチル基であり、Ｘは前記塩形成アニオンである。

In the formula (8), s is 2 or 3, R ¹⁹ and R ²⁰ are each a hydrocarbyl group having 1 to 3 carbon atoms, preferably a methyl group, and X is the salt-forming anion.

  Examples of useful hydrophilically substituted cationic surfactants include the following CTFA names: quaternium-16, quaternium-26, quaternium-27, quaternium-30, quaternium-33, quaternium-43, quaternium- 52, quaternium-53, quaternium-56, quaternium-60, quaternium-61, quaternium-62, quaternium-70, quaternium-71, quaternium-72, quaternium-75, quaternium-76 hydrolyzed collagen, quaternium-77, quaternium -78, quaternium-79 hydrolyzed collagen, quaternium-79 hydrolyzed keratin, quaternium-79 hydrolyzed milk protein, quaternium-79 hydrolyzed silk, quaternium-79 hydrolyzed soy protein And Quaternium -79 hydrolyzed wheat protein, quaternium -80, Quaternium -81, Quaternium -82, Quaternium -83, and materials and mixtures thereof having a quaternium -84 include, but are not limited to.

  Particularly preferred hydrophilically substituted cationic surfactants include dialkylamidoethylhydroxyethylmonium salts, dialkylamidoethyldimonium salts, dialkyloethylethylhydroxyethylmonium salts, dialkyloylethyldimonium salts, and These mixtures are mentioned.

  These are commercially available under the following trade names: Witco Chemical's VARISOFT 110, VARIQUAT K1215 and 638, McIntyre's MacPro KLP, MacPro WLW, MacPro MLP, MacPro NSP, MacPro NLW, MacPro WWP, MacPro NLP, MacPro SLP, Akzo's Etquad 18/25, Etquad 0 / 12PG, Etquad C / 25, Etquad S / 25, Etduquad, Such as Henkel's DEHYQUA SP and ICI America's ATLAS G265.

  Next, a cationic polymer useful in the embodiment will be described. In the present invention, the term “polymer” includes a substance produced by polymerization of one kind of monomer and a substance produced by two or more kinds of monomers.

  The cationic polymer is preferably a water-soluble cationic polymer. A “water-soluble” cationic polymer is sufficiently soluble in water to form a substantially transparent solution in water at 25 ° C. (distilled or equivalent water) at a concentration of 0.1%. Means polymer. Preferred cationic polymers are sufficiently soluble to form a substantially clear solution at a concentration of 0.5%, more preferably at a concentration of 1.0%.

  Suitable cationic polymers include, for example, copolymers of 1-vinyl-2-pyrrolidone and 1-vinyl-3-methylimidazolium salt (eg, chloride) (referred to as polyquaterium-16 in “CTFA”), BASF Wyandotte (BASF Wyandotte Corp., Parsippany, NJ, USA) under the trade name LUVIQUAT (for example, Rubiquat FC 370); copolymer of 1-vinyl-2-pyrrolidone and dimethylaminoethyl methacrylate (“CTFA”) In the trade name of GAFQUAT (for example, Gafquat 755N) commercially available from Gaf Corporation (Wayne, NJ, USA); dimethyldiallylammonium chloride; Homopolymers and cationic diallyl quaternary ammonium containing polymers, including acrylamide and dimethyldiallylammonium chloride copolymer (referred to in the “CTFA” industry as polyquaternium 6 and polyquaternium 7); US Pat. No. 4,009 , 256 amino acid ester mineral acid salts of unsaturated carboxylic acid homopolymers and copolymers having 3 to 5 carbon atoms.

  Other cationic polymers that can be used include polysaccharide polymers such as cationic cellulose derivatives and cationic starch derivatives. Suitable cationic polysaccharide polymers include those having the following formula:

式中、Ａはデンプン無水グルコース残基またはセルロース無水グルコース残基などの無水グルコース残基であり、Ｒは、アルキレンオキシアルキレン基、ポリオキシアルキレン基、またはヒドロキシアルキレン基またはこれらの組み合わせである。Ｒ²¹、Ｒ²²およびＲ²³は、それぞれ独立してアルキル基、アリール基、アルキルアリール基、アリールアルキル基、アルコキシアルキル基、またはアルコキシアリール基から選択され、それぞれの基は１８個以下の炭素を含有し、各カチオン部分の炭素総数（すなわちＲ²¹、Ｒ²²およびＲ²³の炭素数の合計）は好ましくは２０以下である。Ｘは前述のようなアニオン対イオンである。

In the formula, A is an anhydroglucose residue such as a starch anhydroglucose residue or a cellulose anhydroglucose residue, and R is an alkyleneoxyalkylene group, a polyoxyalkylene group, a hydroxyalkylene group, or a combination thereof. R ²¹ , R ²² and R ²³ are each independently selected from an alkyl group, an aryl group, an alkylaryl group, an arylalkyl group, an alkoxyalkyl group, or an alkoxyaryl group, each group having 18 or fewer carbons. The total number of carbons in each cation moiety (that is, the total carbon number of R ²¹ , R ²² and R ²³ ) is preferably 20 or less. X is an anion counter ion as described above.

  Cationic cellulose is commercially available from Amerchol Corp. (Edison, NJ, USA) as a salt obtained by reacting hydroxyethyl cellulose with a trimethylammonium substituted epoxide under the trade name polymer JR and LR series. In this case, it is called polyquaternium 10. Other types of cationic cellulose include polymeric quaternary ammonium salts reacted with hydroxyethyl cellulose and lauryldimethylammonium substituted epoxide, what is called polyquaternium 24 in the “CTFA” industry. These substances are commercially available from Amercor as trade name polymer LM-200.

  Other cationic polymers include cationic guar rubber derivatives such as guar hydroxypropyltrimonium chloride (trade name Jaguar® series commercially available from Celanese Corp.). Also included are quaternary nitrogen-containing cellulose ethers (such as those described in US Pat. No. 3,962,418), and etherified celluloses and starches (such as those described in US Pat. No. 3,958,581). It is done.

  Of these (C) cationic conditioning agents, the use of cationic polymers is preferred, and the use of cationized cellulose or cationic guar rubber derivatives is particularly preferred.

  In the embodiment of the present invention, water as component (D) is used as a dispersion medium for (A) resinous polyorganosiloxane, (B) fatty acid soap, and (C) a cation conditioning agent. (D) A uniform skin cleanser can be obtained by blending water.

  In the embodiment of the present invention, a liquid detergent composition can be prepared by mixing these components (A) to (D) according to a conventional method. In the composition, if necessary, a surfactant generally used in cosmetics can be blended, and optional components such as a viscosity modifier, preservative, disinfectant, fragrance, and pigment are added. be able to. The composition is preferably an emulsion and can be used as a skin cleanser, particularly a hand, face or whole body cleanser.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples.

(Synthesis Example 1)
A mixture of 124 g of dimethylhydrogenchlorosilane, 135 g of tetramethoxysilane and 79 g of toluene was added to 322 g of water in a 1 liter flask over 30 minutes using a dropping funnel while maintaining a temperature of 60 ° C. or lower. . The mixture was stirred for 20 minutes, and then separated into an oil layer and an aqueous layer by a separatory funnel.

  Next, the oil layer was washed with 300 g of water and then separated again. Furthermore, the obtained oil layer was stripped for 2 hours under the conditions of 150 ° C. and 20 mmHg to obtain a resinous methylhydrogenpolysiloxane.

When infrared absorption (IR) spectrum analysis of the product was performed, absorption bands were observed at 2160 cm ⁻¹ (Si—H) and 1050 cm ⁻¹ (Si—O—Si), respectively. Furthermore, when the viscosity of the product was measured, it was 0.025 Pa · s at 25 ° C.

  Next, 306 g (2.7 mol%) of the obtained resinous methylhydrogenpolysiloxane and 333 g (2.8 mol%) of α-methylstyrene were mixed with 10 ppm of chloroplatinic acid catalyst in 300 g of toluene as a solvent. The hydrosilylation reaction was carried out. Thereafter, stripping was performed at 150 ° C. and 20 mmHg for 2 hours to obtain a terminal 2-phenylpropyl-modified (blocked) resinous polysiloxane (S-1). The viscosity of the resinous polysiloxane thus obtained was measured and found to be 0.35 Pa · s at 25 ° C.

  (IR) From the measured value of the spectrum and viscosity and the molar ratio of the reaction starting materials, etc., c in the average composition formula of the finally obtained resin-like polysiloxane (S-1) is less than 30, and (a + b) It was confirmed that / c is in the range of 0.4 to 4, a / c is in the range of 0.2 to 4, and b / c is in the range of 0 to 3.8.

(Synthesis Example 2)
α-methylstyrene (2.8 mol%) was replaced with the same mol% hexene, and the other terminal hexyl-modified resinous polysiloxane (S-2) was obtained in the same manner as in Synthesis Example 1. When the viscosity of this resinous polysiloxane was measured, it was 0.2 Pa · s at 25 ° C.

(Synthesis Example 3)
α-methylstyrene (2.8 mol%) was replaced with the same mol% of hexadecene, and other than that was carried out in the same manner as in Synthesis Example 1 to obtain a biterminal hexadecyl-modified resinous polysiloxane (S-3). When the viscosity of this resinous polysiloxane was measured, it was 0.15 Pa · s at 25 ° C.

(Synthesis Example 4)
Resin-like methylpolysiloxane (S-4) was synthesized in the same manner as in Synthesis Example 1 except that dimethylhydrogenchlorosilane was replaced with trimethylchlorosilane having the same mol number. When the infrared absorption spectrum analysis of the obtained methylpolysiloxane was conducted, an absorption band was observed at 1050 cm ⁻¹ (Si—O—Si). Furthermore, the viscosity was 0.1 Pa · s at 25 ° C.

Examples 1-4 and Comparative Examples 1-4
Using the resin-like polysiloxanes (S-1) to (S-4) and silicone oils (s-1) to (s-4) obtained in Synthesis Examples 1 to 4, the bodies having the compositions shown in Table 1 were used. A soap was prepared. Next, for the body soap prepared in this way, 10 panelists were given 5 levels of “foaming”, “use feeling”, “crispiness” and “freshness” respectively according to the following criteria. The average value was calculated. These evaluation results are shown in Table 1.

In addition, as silicone oil (s-1)-(s-4), what was shown below was used, respectively.
s-1: Polydimethylsiloxane having a viscosity (25 ° C.) of 500 mPa · s s-2: Amino-modified silicone oil (TSF4703 manufactured by our company)
s-3: Polyether-modified silicone oil (TSF4440 manufactured by our company)
s-4: Methyl phenyl silicone oil (our TSF433)

[Evaluation criteria]
(Bubbles)
5… Good ⇔1… Bad (feeling of use)
5… Smooth and comfortable ⇔1… Not slipping and bad (squeaky)
5… None⇔1… Yes (fresh feeling)
5 ... good ⇔ 1 ... bad

  As is clear from Table 1, the body soaps obtained in Examples 1 to 4 have good foaming and feeling of use, no feeling of squeaking, and excellent refreshing feeling after washing.

  The liquid detergent for skin of the present invention has good foaming and excellent usability, and has no feeling of squeezing or squeezing at the time of rinsing, and has a refreshing feeling and moist feeling after washing. Suitable for cleaning agents for the whole body such as body shampoos, hand soaps for washing palms, and facial cleansers.

Claims (1)

(A) Average composition formula:
[(R ¹ ) ₂ R ² SiO _1/2 ] _a [SiO _4/2 ] _c
(In the formula, R ¹ represents a methyl group. R ² represents a group selected from a methyl group, a monovalent unsubstituted hydrocarbon group having 6 to 30 carbon atoms, and a 2-phenylpropyl group. / C is 0.2 to 4, and c is a number less than 30), and the viscosity is 0.01 to 1.0 Pa · s at 25 ° C. %When,
(B) 2-40% by weight fatty acid soap,
(C) A cation conditioning agent, 0.01 to 20% by weight, and (D) a liquid detergent for skin, each containing water.