JPS6272606A - Shampoo composition - Google Patents

Abstract

PURPOSE:A shampoo composition having improved conditioning effect and improved luster providing effects on the hair, obtained by blending a shampoo composition with a specific branched fatty acid cholesteryl ester. CONSTITUTION:A shampoo composition is blended with 0.1-10.0wt%, especially preferably 0.2-2wt% based on the total composition of a branched fatty acid cholesteryl ester shown by the formula (R is 11-23C, preferably 13-19C, espe cially 17C saturated aliphatic hydrocarbon group containing at least one alkyl- substituent group between a carboxyl bond position and the center of a main chain) as a conditioning agent, to give a shampoo composition which can provides the skin with a naturally finishing effect after washing by its condition ing effect and luster providing effect on the hair.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a shampoo composition, more specifically, a shampoo composition containing a specific branched fatty acid cholesteryl ester and having an excellent conditioning effect and an effect of imparting shine to hair. relating to things.

[Conventional technology and its problems]

Conventionally, conditioning agents that are added to shampoos to improve the flexibility and smoothness of the hair after use, and to impart a lingering feeling, include cationic polymers,
Ester oils and the like are known.

However, cationic polymers make the hair hard after drying, causing discomfort after use, and ester oils are oily and sticky after drying, so shampoos containing these as conditioning agents all have a natural finish. This was far from meeting the demands of consumers who seek a sense of sensibility.

[Means for solving problems]

Under these circumstances, the inventors of the present invention have made extensive studies to solve the above problems, and have surprisingly found that the intended purpose can be achieved by using a specific cholesteryl ester, which is a substance similar to sebum, as a conditioning agent. The present invention was completed based on the discovery that it is possible to impart beautiful luster to hair.

That is, the present invention provides general formula (I); Provided is a shampoo composition characterized by containing 0.1 to 10.0% by weight (hereinafter referred to as H) of branched fatty acid cholesteryl ester represented by (which is an aliphatic hydrocarbon group) based on the total composition. It is.

The branched fatty acid cholesteryl ester represented by the formula (I) used in the present invention is produced from a branched fatty acid or a derivative thereof and cholesterol by a conventional method for producing esters (Japanese Publication No. 1982-23320). The branched fatty acid and cholesterol can be directly reacted and esterified, or either of them can be guided to a more reactive derivative and then esterified.

Branched fatty acids (RCOOH), which is a raw material for producing branched fatty acid cholesteryl ester, can have 12 to 24 carbon atoms (R has 11 to 23 carbon atoms);
-20 (R has 13 to 19 carbon atoms) are preferred, and those with 18 carbon atoms are sometimes cited as the most preferred. The branched fatty acid needs to have at least one alkyl substituent from the carboxyl group bonding position to the center of the main chain. Such saturated branched fatty acids can be easily obtained from petrochemical raw materials or oleochemical raw materials.

An example of such a branched fatty acid obtained from petrochemical raw materials is a branched fatty acid having a side chain at the α position, and is represented by the following formula (II).

(In the formula, R1 and R2 are each a linear or branched saturated aliphatic hydrocarbon group, and the sum of the number of carbon atoms of R1 and R2 is 12 to 18.) A branched fatty acid having a side chain at position 0 can be obtained by aldol condensation of a linear or branched aldehyde having 7 to 10 carbon atoms to form an a-branched unsaturated aldehyde, which is then hydrogenated and oxidized to form a branched saturated fatty acid. It can be manufactured by the following method.

V! with a side chain at position 0! Preferred specific examples of Japanese-branched fatty acids include 5,7.7-dolimethyl-2-(I,3,3
-)rimetherbutyl)-octanoic acid, 2-hebutylundecanoic acid, 2-hexyldecanoic acid, and the like.

An example of a saturated branched fatty acid obtained from oleochemical raw materials is a fatty acid having a methyl branched chain represented by the following formula (IIl).

(In the formula, the sum of m, :n is 14, m = n = 7
Such methyl branched chain fatty acids are obtained, for example, as a by-product during the production of oleic acid dimer [see, for example, Journal of American Oil Chemistry, ON Chetn. .

Soc, ) 51,522 (I974)), herein referred to in Toyonaka as methyl branched isostearic acid. Methyl-branched instearic acid is commercially available, for example as its inpropyl ester (eg Emery, USA).

Furthermore, in addition to cholesterol produced by various methods, it is also possible to use cholesterol obtained by extraction or extraction and purification from natural substances, such as the pulp of dried cow brain.

Among these branched fatty acid cholesteryl esters (I), methyl branched instearic acid cholesteryl esters are most preferred.

Branched fatty acid cholesteryl ester (I) is blended in the shampoo composition of the present invention in an amount of 0.1 to 10.0%, particularly preferably 0.2 to 2%.

If it is less than 0.1%, the effects of the present invention will not be sufficiently exhibited;
．． If it exceeds 0%, the system will gel, which is not preferable.

The composition of the present invention comprises branched fatty acid cholesteri) diester (
It is manufactured by blending in accordance with a conventional method a surfactant used as a base of known shampoo compositions, and other components known per se.

Examples of the surfactant include anionic surfactants, nonionic surfactants, amphoteric surfactants, and cationic surfactants as shown below.

Anionic surfactant: (I) An alkyl linear or branched chain argylbenzene sulfonate having an average of 10 to 16 carbon atoms.

■ It has a linear or branched alkyl group or alkenyl group with an average of 10 to 20 carbon atoms, and an average of 0.5 to 8 carbon atoms per molecule.
Moles of ethylene oxide, propylene oxide, butylene oxide, ethylene oxide and propylene oxide are 0.1/9. 9-9. 9/0.
1 or ethylene oxide and butylene oxide in a ratio of 0. 1/9. 9-9, 9/0.
Alkyl or alkenyl ether sulfates added in a ratio of 1:1.

(3) An alkyl or alkenyl sulfate having an alkyl group or alkenyl group having an average carbon number of 10 to 20.

(Olefin sulfonate having an average of 10 to 20 carbon atoms in one molecule.

(5) Alkanesulfone having an average of 10 to 20 carbon atoms in one molecule [1].

(6) A saturated or unsaturated fatty acid salt having an average of 10 to 24 carbon atoms in one molecule.

(7) Contains an alkyl group or alkenyl group having an average of 10 to 20 carbon atoms, with an average of 0. 5-8 moles of ethylene oxide, propylene oxide, butylene oxide, 0 ethylene oxide and propylene oxide
．． 1/9. 9-9. 9/0. At a ratio of 1 or ethylene oxide to butylene oxide to 0
．． 1/9. 9-9. 9/0. Alkyl or alkenyl ether carboxylic acid salts added in a ratio of 1:1.

(8) an a-sulfo fatty acid salt or ester having an alkyl or alkenyl group having an average of 10 to 20 carbon atoms;

(9) N-acylamino acid type surfactant having an acyl group having 8 to 24 carbon atoms and a free carboxylic acid residue.

(c) Phosphoric acid mono- or diester type surfactant having an alkyl group or alkenyl group having 8 to 24 carbon atoms.

Ampholytic surfactant: αυ A 0-position addition type, secondary amide type, or tertiary amide type imidacillin-based amphoteric surfactant having an alkyl group, alkenyl group, or acyl group having 8 to 24 carbon atoms.

a Carbobetaine-based, amidobetaine-based, sulfobetaine-based, hydroxysulfobetaine-based, or amidosulfobetaine-based amphoteric surfactants having an alkyl group, alkenyl group, or acyl group having 8 to 24 carbon atoms.

Nonionic surfactant: (L3 Polyoxyethylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and added with 1 to 20 moles of ethylene oxide.

I has an alkyl group having an average carbon number of 6 to 12, and 1 to 20
Polyoxyethylene alkylphenyl ether with moles of ethylene oxide added.

Kasumi Polyoxypropylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and to which 1 to 20 moles of propylene oxide are added.

αe Polyoxybutylene alkyl or tf flukenyl ether having an alkyl group or alkenyl group having an average carbon number of 10 to 20 and to which 1 to 20 mol of butylene oxide is added.

(I7) A nonionic activator (ethylene oxide and The ratio with propylene oxide or butylene oxide is 0.1/9.9-9.91
0.1) 0υ Higher fatty acid alkanolamide or alkylene oxide adduct thereof having a long chain acyl group having 10 to 20 carbon atoms.

uLJ A sucrose fatty acid ester consisting of a fatty acid with an average carbon number of 10 to 20 and sucrose.

(To) A fatty acid glycerin monoester consisting of a fatty acid with an average carbon number of 10 to 20 and glycerin.

(2) Alkylamine oxide having an alkyl group or alkenyl group having 10 to 20 carbon atoms.

Cationic surfactant: (1) A mono- or di-long-chain alkyl quaternary ammonium salt having a long-chain alkyl group or alkenyl group having 10 to 20 carbon atoms.

Counter ions for the anionic residues of these surfactants include alkali metal ions such as sodium and potassium, alkaline earth metal ions such as calcium and magnesium, ammonium ions, and 1 to 3 furkanol groups having 2 or 3 carbon atoms. Specific alkanolamines (eg, monoethanolamine, jetanolamine, triethanolamine, triimpropanolamine, etc.) can be mentioned. In addition, examples of counter ions for cationic residues include halogen ions such as chlorine, bromine, and iodine, and methosulfate and saracalinate ions.

Among these surfactants, anionic surfactants such as (2) alkyl ether sulfates, (3) alkyl sulfates, (4) olefin sulfonates, and αυ imidacillin-based amphoteric surfactants are particularly useful as main active agents. Preferred examples include sodium polyoxyethylene lauryl ether sulfate (average addition of 2 to 3 moles of ethylene oxide), triethanolamine lauryl sulfate, and sodium a-olefin sulfonate (average carbon number 12 to 14).

These surfactants are preferably blended in the shampoo composition of the present invention in a total amount of 5 to 30%, particularly 10 to 20%.

In addition, other ingredients include propylene glycol, a dissolving agent such as glycerin, ethanol, inorganic salts, higher alcohols, and droxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose,
Viscosity modifiers such as methylcellulose, other fragrances, pigments,
Ultraviolet absorbers, antioxidants, anti-dandruff agents, bactericides, preservatives, etc. can be added as necessary. The remainder is water, which is usually used in a proportion of 50 to 90%, preferably 60 to 80%.

〔Effect of the invention〕

The shampoo composition of the present invention can impart a natural finish to hair after washing due to its conditioning effect and gloss-imparting effect on hair.

〔Example〕

Next, an example will be given and explained.

Example 1 The shampoo compositions shown in Table 1 were prepared by conventional methods, and their performance was evaluated by the following method. The results are shown in Table 1.

(I) After adding warm water (40C) to the system of Conditioning Effect 209, 1 ton of shampoo composition was applied and left for about 1 minute. Next, this was rinsed under running water at 400 °C for 30 seconds, and the residual feeling in the system was sensory evaluated using the following evaluation criteria.

Evaluation criteria 0: Good conditioning effect @: Normal Δ: Slight conditioning effect ×: No conditioning effect at all 11) Shine-imparting effect Japanese women's black hair 101 treated with each hair rinse composition [・40°C] , 30 minutes], and the gloss after drying was compared with that of untreated hair (control), and the gloss imparting effect was evaluated using the following criteria.

×: No difference from control △: Slight gloss imparting effect recognized ○: Obvious gloss imparting effect recognized ◎: Remarkable gloss imparting effect recognized Margin below

Claims (1)

[Claims] 1. General formula (I), ▲ Numerical formulas, chemical formulas, tables, etc. ▼ (I) (In the formula, R has a total of 11 to 23 carbon atoms, and from the carboxyl bond position to the main chain It is characterized by containing 0.1 to 10.0% by weight of the total composition of branched fatty acid cholesteryl ester, which is a saturated aliphatic hydrocarbon group having at least one alkyl substituent, A shampoo composition.