JP2006282518A - Silicone emulsion and hair cosmetic composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hair cosmetic composition eliminating a squeaky feeling during washing or rinsing and imparting a smooth touch, excellent combing properties and coherency after drying to hair. <P>SOLUTION: The hair cosmetic composition comprises (A) 0.01-20 wt.% of a silicone emulsion, (B) 0.1-15 wt.% of a high-melting aliphatic compound, (C1) 0.1-10 wt.% of a cationic conditioning agent and (D) water. (A) The silicone emulsion contains (a) a silicone ingredient containing (a1) 5-80 wt.% of a terminal diorganohydroxysilyl group-containing polyorganosiloxane having 100-50,000 Pa s viscosity (25°C) and (a2) 5-80 wt.% of a polyorganosiloxane having 0.01-10 Pa s viscosity (25°C), (b) 0.5-50 wt.% of a surfactant and (c) water, respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a silicone emulsion and a hair cosmetic composition. More specifically, the present invention includes a silicone emulsion having excellent stability and such a silicone emulsion, and can impart a squeaky feeling to hair during washing and rinsing. The present invention relates to a hair cosmetic composition having excellent combing properties after drying.

  Conventionally, oils such as silicone oil, ester oil, and hydrocarbon oil are solubilized, emulsified, or dissolved and blended in hair cosmetics for the purpose of giving the hair gloss and smoothness. In particular, silicone oil has been widely used in recent years because it has a low surface tension, excellent conformity to hair, and can impart good gloss.

  However, when a large amount of silicone oil is used or a consumer uses it for a long period of time, there has been a problem that the squeaky feeling of the hair increases or becomes greasy due to the characteristics of the oil itself.

  In order to solve such a problem, a hair conditioning composition containing emulsion-polymerized dimethiconol (both terminal hydroxy group polydimethylsiloxane) has been proposed (see, for example, Patent Document 1). In addition, a shampoo composition obtained by further treating an emulsion-polymerized silicone emulsion with a cationic surfactant has been proposed (see, for example, Patent Document 2).

However, since emulsion polymerized dimethiconol has a small particle size, it has not been sufficient in terms of adsorptivity to hair. Therefore, the compositions disclosed in Patent Document 1 and Patent Document 2 are also sufficiently satisfactory in terms of the effects of imparting the properties required for hair cosmetics, such as the feel during rinsing and the fingering property during drying. It wasn't. In particular, there has been a strong demand for imparting a smooth and moist hand to damaged hair.
Tokuhei Hei 8-511272 Japanese National Patent Publication No. 11-500459

  The present invention has been made to solve these problems. In particular, the damaged hair caused by coloring or the like eliminates the squeaky feeling during washing and rinsing, so that the comb feels smooth and dry. An object of the present invention is to provide a hair cosmetic composition capable of imparting motility and excellent unity.

  1st invention of this invention is a silicone emulsion, (a) (a1) 5-80 weight% of terminal diorganohydroxysilyl group containing polyorganosiloxane whose viscosity in 25 degreeC is 100-50,000 Pa.s, (A2) a polyorganosiloxane component containing 5 to 80% by weight of a polyorganosiloxane having a viscosity of 0.01 to 10 Pa · s at 25 ° C., (b) 0.5 to 50% by weight of a surfactant, and ( c) It contains water, respectively.

  The second invention of the present invention comprises (A) 0.01 to 20% by weight of a silicone emulsion, (B) 0.1 to 15% by weight of a high melting point aliphatic compound having a melting point of 25 ° C. or higher, and (C1) a cation. A hair cosmetic composition containing 0.1 to 10% by weight of a conditioning agent and (D) water, respectively, wherein the (A) silicone emulsion is the silicone emulsion of the first invention.

  According to a third aspect of the present invention, (A) 0.01 to 20% by weight of a silicone emulsion, (E) 5 to 50% by weight of a detersive surfactant, and (C2) 0.1 to 20% by weight of a conditioning agent. And (D) a hair cosmetic composition containing water, respectively, wherein the (A) silicone emulsion is the silicone emulsion of the first invention.

  In the silicone emulsion of the present invention, an emulsion in which a silicone polymer (polyorganosiloxane) having an appropriate particle size without being too fine is stably dispersed is obtained. And, according to the hair cosmetic composition of the present invention, since such a silicone emulsion is blended, it eliminates the squeaky feeling during washing and rinsing, and gives a smooth and moist feel to the hair. Can do. Moreover, good combing property, cohesiveness and moist feeling can be imparted after drying.

  Hereinafter, embodiments of the present invention will be described.

  The silicone emulsion according to the first embodiment of the present invention contains (a) a polyorganosiloxane component, (b) a surfactant, and (c) water, and (a) a polyorganosiloxane component. (A1) 5 to 80% by weight of a polyorganosiloxane containing a terminal diorganohydroxysilyl group having a viscosity at 25 ° C. of 100 to 50,000 Pa · s, and (a2) a viscosity of 0.01 to 10 Pa · s at 25 ° C. And 5 to 80% by weight of polyorganosiloxane.

  The second embodiment of the present invention is a hair cosmetic composition comprising 0.01 to 20% by weight of (A) a silicone emulsion and 0.1 to 15% by weight of (B) a high melting point aliphatic compound (melting point). 25 ° C. or higher), 0.1 to 10% by weight of (C1) cation conditioning agent, and (D) water. As the (A) silicone emulsion, the silicone emulsion of the first embodiment described above is used.

  First, (A) silicone emulsion which is 1st Embodiment is demonstrated. The main component constituting the silicone emulsion is (a) a polyorganosiloxane component, which can impart good slipping feeling, moist feeling, etc. during washing and after drying to the hair. The first component constituting the (a) polyorganosiloxane component is (a1) a polyorganosiloxane containing a terminal diorganohydroxysilyl group and has a viscosity (25 ° C.) of 100 to 50,000 Pa · s. . Although it has a linear siloxane skeleton basically, it may have some branches. More preferably, the entire molecule has a linear structure.

  Examples of the organic group bonded to the silicon atom in the molecule include an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group; a cycloalkyl group such as a cyclohexyl group; an alkenyl group such as a vinyl group and an allyl group An aryl group such as a phenyl group or a tolyl group; an amino group such as an aminoethyl group or an aminopropyl group; and a group in which a hydrogen atom bonded to a carbon atom of these groups is substituted with a halogen atom or a cyano group, such as chloro Examples include a methyl group, 3,3,3-trifluoropropyl group, cyanomethyl group and the like. As other groups bonded to the silicon atom, an alkoxy group, a hydroxyl group, a hydrogen atom, or the like may be partially included.

  Examples of the terminal group of the molecular chain include a triorganosilyl group or a group in which a hydroxyl group is bonded to a silicon atom instead of a part of the organic group, and a dimethylhydroxysilyl group is preferable. That is, as the (a1) component, the terminal diorganohydroxysilyl group-containing polyorganosiloxane is particularly preferably polydimethylsiloxane (dimethiconol) having dimethylhydroxysilyl groups at both ends.

  When the viscosity (25 ° C.) of the terminal diorganohydroxysilyl group-containing polyorganosiloxane that is the component (a1) is less than 100 Pa · s, a sufficient conditioning effect on hair cannot be obtained, and if it exceeds 50,000 Pa · s Sufficient combability cannot be obtained. A preferable range of the viscosity is 20 to 4,000 Pa · s, and a more preferable range is 20 to 3,000 Pa · s.

  (A) The second component constituting the polyorganosiloxane component is (a2) a polyorganosiloxane having a viscosity at 25 ° C. of 0.01 to 10 Pa · s and basically has a linear siloxane skeleton. Although it may have some branches, it is preferable that the whole molecule has a linear structure. When the viscosity of the component (a2) is less than 0.01 or exceeds 10 Pa · s, it is impossible to give a sufficient unity feeling to the hair. A preferable range of the viscosity is 0.02 to 5 Pa · s, and a more preferable range is 0.03 to 1 Pa · s.

  The organic group bonded to the silicon atom of the polyorganosiloxane as the component (a2) includes an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, and a hexyl group; a cycloalkyl group such as a cyclohexyl group; a vinyl group An alkenyl group such as an allyl group; an aryl group such as a phenyl group or a tolyl group; an amino group such as an aminoethyl group or an aminopropyl group; and a hydrogen atom bonded to a carbon atom of these groups is a halogen atom or a cyano group Examples of the substituted group include a chloromethyl group, a 3,3,3-trifluoropropyl group, and a cyanomethyl group. As other groups bonded to the silicon atom, an alkoxy group, a hydroxyl group, a hydrogen atom, or the like may be partially included.

  Examples of the terminal group of the molecular chain include a triorganosilyl group or a group in which a hydroxyl group is bonded to a silicon atom in place of a part of the organic group, and may be a trimethylsilyl group or a dimethylhydroxysilyl group. A dimethylhydroxysilyl group is particularly preferable. That is, as the component (a2), polydimethylsiloxane (dimethiconol) in which both ends are dimethylhydroxysilyl groups is desirable.

  The blending ratio of the component (a1) and the component (a2) is preferably 5 to 80% by weight with respect to the entire silicone emulsion. Moreover, it is preferable that the compounding ratio of (a1) component and (a2) component is 1: 10-10: 1 by weight ratio. A more preferable range is 2:10 to 10: 2. Outside this range, it is not possible to satisfy all the combing properties, cohesiveness, and conditioning effects.

  In the silicone emulsion of the embodiment of the present invention, (a) the polyorganosiloxane component has a viscosity at 25 ° C. of 0.5 to 500 Pa · s and an amino group content of 0.05 to 2.0% by weight. An N- (2-aminoethyl) -3-aminopropyl group-containing polydimethylsiloxane (amodimethicone) can be further blended. The blending ratio of amodimethicone is preferably 2 to 50% by weight, more preferably 5 to 35% by weight, based on the total amount of the components (a1) and (a2). By blending amodimethicone, it is possible to further impart combing property at the time of rinsing and softness at the time of drying to the hair.

  The (b) surfactant used in the silicone emulsion of the embodiment of the present invention is for emulsifying the (a) polyorganosiloxane component in water, an anionic surfactant, a cationic surfactant, Any nonionic surfactant, amphoteric surfactant and the like can be selected and used.

  Examples of the anionic surfactant include polyoxyethylene alkyl ether sulfuric acid, alkyl sulfuric acid, and salts thereof. Specifically, polyoxyethylene alkyl ether sulfuric acid includes polyoxyethylene (2) octyl ether sulfuric acid, polyoxyethylene (8) decyl ether sulfuric acid, polyoxyethylene (3) lauryl ether sulfuric acid, and the like. Examples thereof include sulfuric acid, myristyl sulfuric acid, cetyl sulfuric acid, and the like, and salts thereof, that is, salt-type anionic surfactants are also included. As the kind of salt, amine salts such as sodium salt, potassium salt, ammonium salt and triethanolamine are preferable, and from the viewpoint of feeling at the time of rinsing, among them, use of triethanolamine and ammonium salt is preferable. As the anionic surfactant, polyoxyethylene alkyl ether carboxylate, N-acyl amino acid salt, N-acyl taurate and the like can also be used.

As the cationic surfactant, those represented by the following general formula [Chemical Formula 1] are preferably used.

In the formula, at least one of R ¹ , R ² , R ³ and R ⁴ 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. It is preferred that R ¹ , R ² , R ³ and R ⁴ are independently selected from alkyl groups having 1 to 22 carbon atoms.

  Specific examples of useful cationic surfactants include the following CTFA (Cosmetics, Toiletry, and Fragrance Association, Inc.) names: Quotanium-8, Quotanium-14, Quotanium Examples include, but are not limited to, -18, quaternium-18 mesosulfate, quaternium-24, and mixtures thereof.

  Among the cationic surfactants represented by the above general formula, 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 Lorido, 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 ^{1 to} R ⁴ 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 [Chemical Formula 2] to [Chemical Formula 7].

式中、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。

式中、ｍは１〜５の数、Ｒ^５、Ｒ^６およびＲ^７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、Ｒ^８、Ｒ^９およびＲ^１０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。

これらの式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。Ｒ^１１およびＲ^１２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。

式中、Ｒ^１３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。

式中、Ｒ^１４およびＲ^１５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。

式中、ｓは２または３、Ｒ^１６およびＲ^１７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, 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 ₂ CH ₂ O) _zH . x + y + z is 60 or less, and X is the salt-forming anion.

In the formula, m is a number of 1 to ⁵ , one or more of R ⁵ , R ⁶ and R ⁷ are each independently an alkyl group having 1 to 30 carbon atoms, and the others are CH ₂ CH ₂ OH. , R ⁸ , R ⁹ and R ¹⁰ 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.

In each of these formulas, Z ² represents an alkyl group, preferably preferably from alkyl groups having 1 to 3 carbon atoms are methyl group, Z ³ is preferably a short chain hydroxyalkyl group be a hydroxymethyl group or a hydroxyethyl group , P and q are each an integer of 2 to 4, preferably 2 to 3, more preferably 2. R ¹¹ and R ¹² are each a substituted or unsubstituted hydrocarbon, preferably an alkyl or alkenyl group having 12 to 20 carbon atoms, and X is the above-mentioned salt-forming anion.

In the formula, R ¹³ 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 an alkyl group having 2 to 4 carbon atoms, 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 as described above.

In the formula, each of R ¹⁴ and R ¹⁵ is more preferably a methyl group than 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.

In the formula, s is 2 or 3, R ¹⁶ and R ¹⁷ 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, Etduqua, Such as Henkel's DEHYQUA SP and ICI America's ATLAS G265.

Primary, secondary, and tertiary aliphatic amine salts are suitable cationic surfactants. The alkyl group of such amines preferably has 12 to 22 carbon atoms and can be substituted or unsubstituted. Amidoamines represented by the general formula: R ¹⁸ CONH (CH ₂ ) ₁ N (R ¹⁹ ) ₂ are particularly useful. In the formula, R ¹⁸ represents a residue of a fatty acid having 11 to 24 carbon atoms, R ¹⁹ represents an alkyl group having 1 to 4 carbon atoms, and 1 is an integer of 1 to 4.

  Preferred amidoamines include stearoamidopropyldimethylamine, stearoamidopropyldiethylamine, stearoamidoethyldiethylamine, stearoamidoethyldimethylamine, palmitoamidopropyldimethylamine, palmitoamidopropyldiethylamine, palmitoamidoethyldiethylamine, Palmitoamidoethyldimethylamine, behenamidopropyldimethylamine, behenamidopropyldiethylamine, behenamidoethyldiethylamine, behenamidoethyldimethylamine, arachidoamidopropyldimethylamine, arachidoamidopropyldiethylamine, arachidoamidoethyldiethylamine, arachidoamidoethyldimethylamine And mixtures thereof. More preferably, stearoamidopropyldimethylamine, stearoamidoethyldiethylamine, and mixtures thereof are mentioned.

  Preferred amidoamines are acids selected from the group consisting of L-glutamic acid, lactic acid, hydrochloric acid, malic acid, succinic acid, acetic acid, fumaric acid, L-glutamic acid hydrochloride, tartaric acid and mixtures thereof, particularly preferably L-glutamic acid, Partly quaternized with lactic acid, hydrochloric acid and mixtures thereof. The molar ratio of amidoamine to acid is preferably 1: 0.3 to 1: 1, more preferably 1: 0.5 to 1: 0.9.

  Nonionic surfactants include, for example, condensation of linear or branched aliphatic (C8 to C18) primary or secondary alcohols or phenols with alkylene oxides (usually ethylene oxide, propylene oxide, butylene oxide). And generally having 3 to 50 ethylene oxide groups. For example, Neugen ET-102 (polyoxyethylene lauryl ether (EO: 5), manufactured by Daiichi Kogyo Seiyaku Co., Ltd.), Neugen YX-400 (polyoxyethylene lauryl ether (EO: 40), Daiichi Kogyo Seiyaku Co., Ltd.) )) Is a commercially available product.

  As the amphoteric surfactant and / or the semipolar surfactant, all those usually used for cosmetic bases and the like are applied, and in particular, they are composed of compounds represented by the following general formulas (9) to (12). One or more selected from the group is preferably used.

で表されるアミドベタイン型両性界面活性剤。

で表されるアミドスルホベタイン型両性界面活性剤。

で表されるベタイン型両性界面活性剤。

で表されるスルホベタイン型両性界面活性剤。

で表されるイミダゾリニウム型両性界面活性剤。 That is,

Amidobetaine-type amphoteric surfactant represented by

Amidosulfobetaine-type amphoteric surfactant represented by

Betaine amphoteric surfactant represented by

A sulfobetaine type amphoteric surfactant represented by the formula:

An imidazolinium type amphoteric surfactant represented by

In the general formulas [Chemical Formula 8] to [Chemical Formula 12], R ²⁰ represents an alkyl group or alkenyl group having 9 to 21 carbon atoms, and the number of carbon atoms is more preferably 1 to 17, most preferably Preferably it is 11-13. If the number of carbon atoms is less than 9, the hydrophilicity is too strong to form a complex, and if the number of carbon atoms exceeds 21, the solubility in water becomes poor and it is difficult to form a complex. R ²¹ each independently represents an alkyl or alkenyl group having 10 to 18 carbon atoms, t represents an integer of 2 to 4, u represents an integer of 0 to 3, and v represents an integer of 1 or 2. .

  Here, as the amide betaine type amphoteric surfactant represented by the general formula: [Chemical Formula 8], for example, coconut oil fatty acid amidopropyldimethylaminoacetic acid betaine and the like can be mentioned, and “Levon 2000” (manufactured by Sanyo Chemical Industries, Ltd.) ), “Anon BDF” (manufactured by NOF Corporation) and the like are exemplified as commercial products. As the amidosulfobetaine type amphoteric surfactant represented by the general formula: [Chemical Formula 9], “Lonzain-CS” (manufactured by Lonza), “Miratine CBS” (manufactured by Milanol), etc. are commercially available products. As an example. Examples of the betaine-type amphoteric surfactant represented by the general formula: [Chemical Formula 10] include lauryldimethylaminoacetic acid betaine and the like, including “Anon BL” (manufactured by NOF Corporation), “Dehington AB-30”. (Henkel Co., Ltd.) etc. are illustrated as a commercial item. As the sulfobetaine-type amphoteric surfactant represented by the general formula: [Chemical Formula 11], “Lonzaine-12CS” (manufactured by Lonza) is exemplified as a commercial product. Furthermore, examples of the imidazolinium type amphoteric surfactant represented by the general formula: [Chemical Formula 12] include 2-undecyl-N, N, N- (hydroxyethylcarboxymethyl) -2-imidazoline sodium. “Obazoline 662-N” (manufactured by Toho Chemical Co., Ltd.), “Anon GLM” (manufactured by Nippon Oil & Fats Co., Ltd.) and the like are exemplified as commercial products. Among these, coconut oil fatty acid amidopropyl betaine is particularly desirable.

式中、Ｒ^２１は炭素原子数１０〜１８のアルキル基またはアルケニル基を表す。 As the semipolar surfactant, all those usually used in cosmetic bases and the like are applied, but tertiary amine oxide type semipolar surfactants represented by the following general formula: [Chemical Formula 13] are most preferable. Used for.

In the formula, R ²¹ represents an alkyl group or alkenyl group having 10 to 18 carbon atoms.

  Examples of the tertiary amine oxide-type semipolar surfactant represented by the above general formula: [Chemical Formula 13] include lauryl dimethylamine oxide, lauric acid amidopropyl dimethylamine oxide, and the like. “Unisafe A-LM” "" (Manufactured by Nippon Oil & Fats Co., Ltd.), "McAmin LAO" (manufactured by McIntyre Co., Ltd.) and the like are exemplified as commercial products. Among these, lauric acid amidopropyldimethylamine oxide is desirable.

  In the silicone emulsion according to the embodiment of the present invention, the surfactant as the component (b) is one or more selected from alkyltrimethylammonium chloride, polyoxyethylene alkyl ether, alkyl oil fatty acid amidopropyl betaine and the like. It is desirable to use

  The blending ratio of the surfactant as component (b) is 0.5 to 50% by weight, more preferably 1 to 20% by weight, based on the entire silicone emulsion. If the amount is less than 0.5% by weight, the stability of the emulsion may be lowered and separated. On the other hand, if the amount exceeds 50% by weight, the emulsion may be thickened and fluidity may be deteriorated.

  The water (c) is a medium in which the (a) polyorganosiloxane component is dispersed and emulsified. The amount of component (c) used is such that the concentrations of component (a1) and component (a2) in the silicone emulsion are both 5 to 80% by weight, more preferably 10 to 80% by weight.

  The silicone emulsion according to the first embodiment of the present invention is obtained by mixing the above-described components, mechanically emulsifying the polyorganosiloxane as component (a) and dispersing it in water. The average particle size of the emulsified and dispersed polyorganosiloxane particles is preferably in the range of 0.5 to 20 μm. When the average particle diameter of the polyorganosiloxane particles is less than 0.5 μm, a sufficient conditioning effect cannot be obtained. Moreover, when an average particle diameter exceeds 20 micrometers, the stability as an emulsion will worsen.

  In the hair cosmetic composition according to the second embodiment of the present invention, the (B) high melting point aliphatic compound to be blended with the silicone emulsion as the component (A) has a melting point of 25 ° C. or higher. Selected from fatty alcohols, fatty acids, derivatives thereof, and mixtures thereof.

  (B) Examples of high melting point aliphatic compounds are described in the International Cosmetic Ingredient Dictionary, 5th edition, 1993, and the CTFA Cosmetic Ingredient Handbook, 2nd edition, 1992. However, it is not limited to these.

  Useful fatty alcohols are those having 14 to 30, preferably 16 to 22 carbon atoms. These aliphatic alcohols are saturated and are preferably linear or branched alcohols. Examples of aliphatic alcohols include, but are not limited to, cetyl alcohol, stearyl alcohol, behenyl alcohol, and mixtures thereof.

  Fatty acids include those having 10 to 30, preferably 12 to 22, more preferably 16 to 22 carbon atoms. These fatty acids can be saturated and have a linear or branched carbon skeleton. Dibasic acids, tribasic acids and higher polybasic acids are included, and salts of these fatty acids are also included. Examples include, but are not limited to, lauric acid, palmitic acid, stearic acid, behenic acid, sebacic acid, and mixtures thereof.

  Examples of the aliphatic alcohol derivative and the fatty acid derivative include the alkyl ether of the aliphatic alcohol, the alkoxylated aliphatic alcohol, the alkyl ether of the alkoxylated aliphatic alcohol, the ester of the aliphatic alcohol, and the fatty acid of the compound having an esterifiable hydroxy group. Esters, hydroxy substituted fatty acids, and mixtures thereof.

  Specific examples of fatty alcohol derivatives and fatty acid derivatives include methyl stearyl ether and the like; ceteth series such as ceteth-1 to ceteth-45, and ethylene glycol ether of cetyl alcohol in which the numerical designation represents the number of ethylene glycol moieties; Steerless series such as -1 to 10 where the numerical designation represents the number of ethylene glycol moieties; ethylene glycol ethers of steareth alcohol; ceteares 1 to 10, ethylene glycol ethers of cetealess alcohol, ie cetyl alcohol and stearyl alcohol A mixture of aliphatic alcohols mainly containing the number of ethylene glycol moieties; the ceteth, steareth, and ceteares compounds having 1 to 30 carbon atoms. Polyoxyethylene ether of behenyl alcohol; ethyl stearate, cetyl stearate, cetyl palmitate, stearyl stearate, myristyl myristate, polyoxyethylene cetyl ether stearate, polyoxyethylene stearyl ether stearate, polyoxyethylene lauryl ether Stearate, ethylene glycol monostearate, polyoxyethylene monostearate, polyoxyethylene distearate, propylene glycol monostearate, propylene glycol distearate, trimethylolpropane distearate, sorbitan stearate, polyglyceryl stearate, Glyceryl monostearate, glyceryl distearate, glyceryl tristearate and it Mixtures of the like.

  High melting point fatty compounds which are single compounds of high purity are preferred, and single compounds of pure fatty alcohols selected from the group consisting of pure cetyl alcohol, stearyl alcohol and behenyl alcohol are particularly preferred.

  In the present specification, the term “pure” means that the compound has a purity of at least 90%, preferably at least 95%. A single compound of high purity exhibits a good rinsing effect during rinsing.

  Commercially available products of such high melting point aliphatic compounds include KONOL series manufactured by Shin Nippon Rika Co., Ltd., NAA series cetyl alcohol, stearyl alcohol, and behenyl alcohol manufactured by Nippon Oil & Fats Co., Ltd., 1- Pure behenyl alcohol from 1-DOCOSANOL, NEO-FAT from Akzo, USA, HYSTRENE from Witco Corp., and Italy Baby (Vevy) DERMA (DERMA).

  The (B) high melting point aliphatic compound having a melting point of 25 ° C. or higher is 0.1 to 15% by weight in the hair cosmetic composition, preferably 0.5 to 10% by weight, and more preferably 0.75 to 0.75%. It is contained at a ratio of 5% by weight. And it provides gel and network structure together with the cationic conditioning agent described later, and various conditioning effects such as smooth and smooth feel in wet hair, softness and moist feeling in dry hair, and suppression of hair splashing Demonstrate.

  In the second embodiment, the cationic conditioning agent as the component (C1) is selected from the group consisting of a cationic surfactant, a cationic polymer, and a mixture thereof. These (C1) cationic conditioning agents are contained in the hair cosmetic composition in an amount of 0.1 to 10% by weight, preferably 0.25 to 8% by weight, more preferably 0.5 to 3% by weight. .

  As the cationic surfactant, those similar to those exemplified as the cationic surfactant among the surfactants (b) in the description of the silicone emulsion according to the first embodiment can be used.

  A cationic polymer useful in the second embodiment is 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%.

  Also, the cationic polymer of embodiments has an average molecular weight of at least 5,000, typically at least 10,000 and less than 10,000.000. A preferred average molecular weight is 100,000 to 2,000,000. It has a cationic nitrogen-containing moiety such as a quaternary ammonium moiety and / or a cationic amino moiety.

  The cationic charge density is preferably 0.1 meq / g or more, more preferably 0.5 meq / g or more, still more preferably 1.1 meq / g, and still more preferably 1.2 meq / g or more. The cationic charge density of the cationic polymer can be measured by the Kjeldahl method. Since the charge density of the amino-containing polymer varies depending on the pH and the isoelectric point of the amino group, the charge density is set within the above range at the pH of the desired application.

  Any anion counterion can be utilized for the cationic polymer as long as the water solubility criteria is met. Suitable counterions include halides (eg, Cl, Br, I or F compounds, preferably Cl, Br or I compounds), sulfates and methyl sulfates, although others can be used.

  The cationic nitrogen-containing moiety is present as a substituent on all monomer units of the cationic polymer. Thus, the cationic polymer contains quaternary ammonium or cationic amine substituted monomer units, and other non-cationic unit copoly or polymers referred to as spacer monomer units. Such polymers are already known in the art and are described, for example, in the International Cosmetic Ingredient Dictionary, 3rd edition, 1982.

  Suitable cationic polymers include acrylamide, methacrylamide, alkyl acrylamide and dialkyl acrylamide, alkyl methacrylamide and dialkyl methacrylamide, alkyl acrylate, alkyl methacrylate, vinyl caprolactone, and water soluble spacer monomers such as vinyl pyrrolidone, cationic amines or Mention may be made of copolymers with vinyl monomers having secondary ammonium functional groups.

  The alkyl-substituted monomer and dialkyl-substituted monomer preferably have an alkyl group having 1 to 7 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms. Other suitable spacer monomers include vinyl esters, vinyl alcohol obtained by hydrolysis of polyvinyl acetate, maleic anhydride, propylene glycol and ethylene glycol.

  The cationic amine can be a primary, secondary or tertiary amine. Secondary and tertiary amines are preferred, and tertiary amines are particularly preferred.

Amine-substituted vinyl monomers can be polymerized in the amine form and then optionally converted to ammonium by a quaternization reaction. The amine can be quaternized in the same way after the polymer is formed. For example, a tertiary amine functional group can be quaternized by reacting with a salt of formula R ⁰ X. Here, R ⁰ is a short-chain alkyl group, preferably an alkyl group having 1 to 7 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms, and X is an anion that forms a water-soluble salt with quaternized ammonium. is there.

  Suitable cationic amino monomers and quaternary ammonium monomers include, for example, dialkylaminoalkyl acrylate, dialkylaminoalkyl methacrylate, monoalkylaminoalkyl acrylate, monoalkylaminoalkyl methacrylate, trialkylmethacryloxyalkylammonium salt, trialkylacryloxyalkyl Ammonium salts, vinyl compounds substituted with diallyl quaternary ammonium salts, and vinyl quaternary ammonium monomers and quaternized pyrrolidones having cyclic cation nitrogen-containing rings such as pyridinium, imidazolium and quaternized pyrrolidones such as alkyl vinyl imidazolium, alkyl vinyl Examples include pyridinium and alkyl vinyl pyrrolidone salts.

  The alkyl part of these monomers is preferably a lower alkyl group such as an alkyl group having 1 to 3 carbon atoms, more preferably an alkyl group having 1 or 2 carbon atoms. Suitable amine substituted vinyl monomers include dialkylaminoalkyl acrylates, dialkylaminoalkyl methacrylates, dialkylaminoalkyl acrylamides, and dialkylaminoalkyl methacrylamides. Here, the alkyl group is preferably a hydrocarbyl group having 1 to 7 carbon atoms, more preferably an alkyl group having 1 to 3 carbon atoms.

  The cationic polymer can comprise a mixture of monomer units derived from amines and / or quaternary ammonium substituted monomers and / or compatible spacer monomers.

  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”) Is called Polyquaterium-11), trade name 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.

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。Ｒ^２２、Ｒ^２３およびＲ^２４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Ｒ^２２、Ｒ^２３およびＲ^２４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。 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:

Where 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, or a hydroxyalkylene group or a combination thereof. R ²² , R ²³ and R ²⁴ 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 number of carbon atoms of R ²² , R ²³ and R ²⁴ ) 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.

  In the second embodiment of the present invention, water as component (D) is used as a dispersion medium for (A) silicone emulsion, (B) high melting point aliphatic compound (melting point 25 ° C. or higher) and (C1) cation conditioning agent. Used. By blending water, a uniform hair cosmetic composition can be obtained.

  The hair cosmetic composition of the third embodiment of the present invention comprises 0.01 to 20% by weight of the (A) silicone emulsion, 5 to 50% by weight of (E) a detersive surfactant, 1 to 20% by weight of (C2) conditioning agent and (D) water are contained.

  In the third embodiment, (E) the detersive surfactant is intended to give the composition a detergency, and is an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, a zwitterionic surfactant. And a surfactant selected from agents and mixtures thereof.

  The term “detergent surfactant” is intended to distinguish these from surfactants that mainly emulsify the surfactant, ie, surfactants that provide emulsification benefits and have low detergency. ing. However, since many surfactants have both detergency and emulsifying properties, emulsifying surfactants are not excluded from the detersive surfactants of the present invention. Further, the detersive surfactant of the component (B) may be the same as or different from the surfactant contained in the silicone emulsion as the component (A).

  This (E) detersive surfactant is contained in a proportion of 5 to 50% by weight, preferably 8 to 30% by weight, more preferably 10 to 25% by weight of the hair cosmetic composition.

  In the third embodiment, a known conditioning agent can be used as the (C2) conditioning agent. Suitable (C2) conditioning agents include the aforementioned cationic surfactants, water-soluble cationic polymers, fatty compounds, non-volatile dispersed silicones, hydrocarbons, proteins and mixtures thereof. These conditioning agents are contained in a proportion of 0.1 to 20% by weight of the hair cosmetic composition.

  Water as component (D) is used as a dispersion medium for the aforementioned (A) silicone emulsion, (E) detersive surfactant, and (C2) conditioning agent. (D) A uniform hair cosmetic composition such as a shampoo composition can be obtained by blending water.

  According to the hair cosmetic composition of the embodiment of the present invention, it exhibits an excellent conditioning effect on the hair, improves the squeaky feeling at the time of washing and rinsing, and is excellent for wet and dry hair A smooth and moist feeling can be given, and good fingering can be achieved.

  EXAMPLES Hereinafter, although an Example is given and this invention is demonstrated concretely, this invention is not limited to these Examples. “Part” and “%” represent “part by weight” and “% by weight”, respectively.

[Preparation of emulsion]
(Preparation Example 1)
30 parts of dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 1,000 Pa · s and 30 parts of dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 0.1 Pa · s, After uniformly mixing at 70 ° C, 4.0 parts of polyoxyethylene (4) lauryl ether and 4.0 parts of polyoxyethylene (23) lauryl ether were added, and stirring was continued at 70 ° C for 1 hour to make the system homogeneous. I made it. Next, 7.0 parts of water was added thereto, and the mixture was stirred for 3 hours to invert the phase to obtain a transparent grease. Thereafter, 24.5 parts of water and 0.5 part of salicylic acid were added and stirred for 1 hour to obtain a uniform O / W emulsion (E-1) having a silicone content of 60%.

  When the particle size of the emulsion (E-1) was measured using a particle size distribution analyzer (manufactured by COULTER, LS100Q) with a refractive index set to 1.45, the average particle size was 3.4 μm. there were. When this emulsion was allowed to stand at 50 ° C. for 1 month, no separation of the emulsion was visually observed.

(Preparation Example 2)
20 parts of dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity of 30,000 Pa · s at 25 ° C. and 40 parts of dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 0.1 Pa · s, After uniformly mixing at 70 ° C, 4.0 parts of polyoxyethylene (4) lauryl ether and 4.0 parts of polyoxyethylene (23) lauryl ether were added, and stirring was continued at 70 ° C for 1 hour to make the system homogeneous. I made it. Next, 7.0 parts of water was added thereto, and the mixture was stirred for 3 hours to invert the phase to obtain a transparent grease. Thereafter, 24.5 parts of water and 0.5 part of salicylic acid were added and stirred for 1 hour to obtain a uniform O / W emulsion (E-2) having a silicone content of 60%.

  When the particle size of this emulsion (E-2) was measured using a particle size distribution measuring device (manufactured by COULTER, LS100Q) with a refractive index of 1.45, the average particle size was 4.3 μm. there were. When this emulsion was allowed to stand at 50 ° C. for 1 month, no separation of the emulsion was visually observed.

(Preparation Example 3)
25 parts of dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity of 3,000 Pa · s at 25 ° C. and 35 parts of tridimethylsilyl group-containing polydimethylsiloxane (dimethicone) having a viscosity of 0.2 Pa · s at 25 ° C. After mixing uniformly at 70 ° C., 4.0 parts of polyoxyethylene (4) lauryl ether and 4.0 parts of polyoxyethylene (23) lauryl ether were added and stirring was continued at 70 ° C. for 1 hour. Made uniform. Next, 7.0 parts of water was added thereto, and the mixture was stirred for 3 hours to invert the phase to obtain a transparent grease. Thereafter, 24.5 parts of water and 0.5 part of salicylic acid were added and stirred for 1 hour to obtain a uniform O / W emulsion (E-3) having a silicone content of 60%.

  The particle size of this emulsion (E-3) was measured using a particle size distribution measuring device (manufactured by COULTER; LS100Q) with a refractive index of 1.45. The average particle size was 4.2 μm. there were. When this emulsion was allowed to stand at 50 ° C. for 1 month, no separation of the emulsion was visually observed.

(Preparation Example 4)
27 parts dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 1,000 Pa · s, 27 parts dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 0.1 Pa · s, and 6 parts of N- (2-aminoethyl) -3-aminopropyl group-containing polydimethylsiloxane (amodimethicone) having a viscosity at 25 ° C. of 1 Pa · s and an amino group content of 1.0% is uniformly obtained at 70 ° C. Then, 3.5 parts of polyoxyethylene (4) lauryl ether and 4.5 parts of polyoxyethylene (23) lauryl ether were added, and stirring was further continued at 70 ° C. for 1 hour to make the system uniform. Next, 6.0 parts of water was added thereto, and the mixture was stirred for 3 hours to invert the phase to obtain a transparent grease. Thereafter, 25 parts of water and 1 part of salicylic acid were added and stirred for 1 hour to obtain a uniform O / W emulsion (E-4) having a silicone content of 60%.

  The particle diameter of this emulsion (E-4) was measured using a particle size distribution measuring device (manufactured by COULTER; LS100Q) with a refractive index of 1.45. The average particle diameter was 1.4 μm. there were. When this emulsion was allowed to stand at 50 ° C. for 1 month, no separation of the emulsion was visually observed.

(Preparation Example 5)
30 parts dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 1,000 Pa · s, 15 parts dimethiconol (both ends hydroxy group polydimethylsiloxane) having a viscosity at 25 ° C. of 0.1 Pa · s, and 15 parts of N- (2-aminoethyl) -3-aminopropyl group-containing polydimethylsiloxane (amodimethicone) having a viscosity of 100 Pa · s at 25 ° C. and an amino group content of 0.1% are uniformly distributed at 70 ° C. Then, 3.5 parts of polyoxyethylene (4) lauryl ether and 4.5 parts of polyoxyethylene (23) lauryl ether were added, and stirring was further continued at 70 ° C. for 1 hour to make the system uniform. Next, 6.0 parts of water was added thereto, and the mixture was stirred for 3 hours to invert the phase to obtain a transparent grease. Thereafter, 25 parts of water and 1 part of salicylic acid were added and stirred for 1 hour to obtain a uniform O / W emulsion (E-5) having a silicone content of 60%.

  When the particle size of this emulsion (E-5) was measured using a particle size distribution measuring device (manufactured by COULTER, LS100Q) with a refractive index set to 1.45, the average particle size was 2.1 μm. there were. When this emulsion was allowed to stand at 50 ° C. for 1 month, no separation of the emulsion was visually observed.

(Preparation Example 6)
A uniform O / W emulsion (E-6) having a silicone content of 60% was obtained in the same manner as in Preparation Example 1 except that both dimethiconols of Preparation Example 1 were replaced with dimethicone. The particle diameter of this emulsion (E-6) was measured using a particle size distribution analyzer (manufactured by COULTER; LS100Q) with a refractive index of 1.45. The average particle diameter was 3.2 μm. there were.

(Preparation Example 7)
A uniform O / W emulsion (E-7) having a silicone content of 60% was obtained in the same manner as in Preparation Example 2, except that both dimethiconols in Preparation Example 2 were replaced with dimethicone. When the particle diameter of this emulsion (E-7) was measured using a particle size distribution measuring apparatus (manufactured by COULTER KK; LS100Q) with a refractive index of 1.45, the average particle diameter was 4.8 μm. there were.

(Synthesis Example 1)
30 parts of dodecylbenzenesulfonic acid was uniformly dispersed in 455 parts of deionized water. To this, 500 parts of octamethylcyclotetrasiloxane was added, premixed by stirring, and then treated twice with a pressure homogenizer (pressure 500 kgf / cm ² ) to obtain an emulsion containing octamethylcyclotetrasiloxane. . The emulsion was kept at 85 ° C. for 3 hours with stirring, cooled to 25 ° C. over 3 hours, and then reacted at 25 ° C. for 10 hours with further stirring. Subsequently, the polymerization reaction was stopped by dropwise addition of a 10% aqueous sodium carbonate solution until the pH reached 7 while continuing the stirring, and an emulsion (E-) containing dimethiconol having a silicone content of 50% (both terminal hydroxy group polydimethylsiloxane). 8) was obtained.

  The particle diameter of this emulsion (E-8) was measured using a particle size distribution measuring apparatus (manufactured by COULTER, Inc .; LS100Q) with a refractive index of 1.45. The average particle diameter was 0.23 μm. The polymer viscosity was 1,200 Pa · s.

  The polymer viscosity was measured as follows. That is, after adding 200 parts of isopropyl alcohol to 100 parts of the obtained emulsion and stirring sufficiently, leaving it for 24 hours to separate it into two layers, only the oil layer was transferred to a petri dish and placed in an oven at 150 ° C. for 45 minutes. I put it in. Thus, the remaining isopropyl alcohol and water were completely evaporated to obtain polyorganosiloxane. This was cooled to 25 ° C., and the viscosity at this time was measured using a rotational viscometer.

Examples 1 to 5, Comparative Examples 1 to 3 [Hair conditioner composition]
Using the silicone emulsions (E-1) to (E-8) obtained in Preparation Examples 1 to 7 and Synthesis Example 1, respectively, hair conditioner compositions having the compositions shown in Table 1 were prepared. And about the prepared hair conditioner composition, the characteristic evaluation was performed according to the method and reference | standard shown below.

[Evaluation methods]
12 panelists soaked 10 g of 25 cm long hair treated with a commercial bleaching agent in 40 ° C. water, spread 2 g of conditioner composition on the wet hair, and after 1 minute 30 seconds of 40 ° C. Rinse with water. Subsequently, it dried with the dryer and the hair sample was created. At the stage of preparing this hair sample, each panelist was given the following feelings of “no squeaking feeling when rinsing”, “feeling of fingering after drying”, “moist feeling after drying” and “feeling of unity after drying”. The average was calculated by scoring 5 levels on the basis.

[Evaluation criteria]
5 ... Excellent 4 ... Excellent 3 ... Good 2 ... Slightly inferior 1 ... Inferior These evaluation results are shown in Table 1.

Examples 6 to 10, Comparative Examples 4 to 6 [Shampoo Composition]
Using the silicone emulsions (E-1) to (E-8) obtained in Preparation Examples 1 to 7 and Synthesis Example 1, respectively, shampoo compositions having the compositions shown in Table 2 were prepared. And about the prepared shampoo composition, the characteristic evaluation was performed according to the method and reference | standard shown below.

[Evaluation methods]
After 10g of 25cm long hair treated with a commercial bleaching agent, each of 12 panelists soaked in 40 ° C water and washed with 2g of shampoo composition for 1 minute, then rinsed with 40 ° C water for 30 seconds, And dried to prepare a hair sample. At the hair sample preparation stage, each panelist was given 5 levels of “no squeaking feeling during washing and rinsing”, “feeling of fingering after drying” and “moist feeling after drying”. The score was calculated and the average value was calculated.

[Evaluation criteria]
5 ... excellent 4 ... excellent 3 ... good 2 ... slightly inferior 1 ... poor evaluation results are shown in Table 2.

  The hair cosmetic composition of the present invention can impart a smooth and moist feel to the hair. In particular, it is excellent as a hair conditioner and shampoo because it is excellent in improving the squeaky feeling and imparting a slipperiness to damaged hair during washing and rinsing, and can give excellent dryness and moist feeling to dry hair. Is suitable.

Claims (8)

(A) (a1) 5 to 80% by weight of a terminal diorganohydroxysilyl group-containing polyorganosiloxane having a viscosity at 25 ° C. of 100 to 50,000 Pa · s, and (a2) a viscosity at 25 ° C. of 0.01 to 10 Pa A polyorganosiloxane component comprising 5-80% by weight of polyorganosiloxane which is s;
(B) A silicone emulsion comprising 0.5 to 50% by weight of a surfactant and (c) water, respectively.   2. The terminal diorganohydroxysilyl group-containing polyorganosiloxane of component (a1) and the polyorganosiloxane of component (a2) are both dimethiconol (both end hydroxyl group polydimethylsiloxane). Silicone emulsion.   The blend ratio of the terminal diorganohydroxysilyl group-containing polyorganosiloxane of the component (a1) and the polyorganosiloxane of the component (a2) is 1:10 to 10: 1 by weight. Item 3. The silicone emulsion according to Item 1 or 2.   The silicone emulsion according to any one of claims 1 to 3, comprising polyorganosiloxane particles having an average particle size of 0.5 to 20 µm.   The silicone emulsion according to any one of claims 1 to 4, which is a mechanical emulsion emulsion.   The (a) polyorganosiloxane component is N- (2-aminoethyl) -3- having a viscosity at 25 ° C. of 0.5 to 500 Pa · s and an amino group content of 0.05 to 2.0% by weight. The aminopropyl group-containing polydimethylsiloxane (amodimethicone) is contained in a proportion of 2 to 50% by weight based on the total amount of the component (a1) and the component (a2). The silicone emulsion of any one of Claims. (A) 0.01 to 20% by weight of a silicone emulsion, (B) 0.1 to 15% by weight of a high melting point aliphatic compound having a melting point of 25 ° C. or higher, and (C1) 0.1 to 10% by weight of a cation conditioning agent. And (D) a composition containing water,
A hair cosmetic composition, wherein the silicone emulsion (A) is the silicone emulsion according to any one of claims 1 to 6. (A) 0.01 to 20% by weight of silicone emulsion, (E) 5 to 50% by weight of detersive surfactant, (C2) 0.1 to 20% by weight of conditioning agent, and (D) water. A composition to
A hair cosmetic composition, wherein the silicone emulsion (A) is the silicone emulsion according to any one of claims 1 to 6.