Steroid ester, and cosmetics and ointments containing the same
AssigneeThe Nisshin Oil Mills, Ltd.
InventorsAtsunobu Takada, Yuzo Higaki
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AssigneeThe Nisshin Oil Mills, Ltd.
InventorsAtsunobu Takada, Yuzo Higaki
Estimating the term…
Steroid ester is formed by the reaction between a carboxylic component and cholesterol or methylsterol having two methyl groups attached to the 4-position of the sterol skeleton. The carboxylic component is an .alpha.-branched carboxylic acid having a general formula: ##STR1## (where R.sup.1 is an alkyl group having at least two carbon atoms, and R.sup.2 is an alkyl group having at least four carbon atoms) or a reactive derivative of said .alpha.-branched carboxylic acid. The steroid ester is high in resistance to hydrolysis, exhibits an excellent water-embracing property and, thus, provides an effective oil phase material or base material of cosmetics or ointments.
A cosmetic comprising a cosmetic ingredient and a steroid ester obtained by reacting at least one steroid component which is a trimethylsteroid or a mixture comprising said trimethylsteroid, and wherein the trimethylsteroid is dihydrolanosterol, lanosterol, dihydroagnosterol, agnosterol, cycloartanol, cycloartenol, 2,4-methylenecyloartanol, cyclolaudenol, cyclobranol, isocholesterol or a mixture thereof, with at least one carboxylic acid-based component selected from the group consisting of free .alpha.-branched carboxylic acids having a general formula ##STR6## (where R.sup.1 is an alkyl group having at least two carbon atoms, and R.sup.2 is an alkyl group having at least four carbon atoms) and reactive derivatives of said .alpha.-branched carboxylic acid which are acid halides or anhydrides, said cosmetic is a creamy cosmetic for the skin including a cold cream, a nutritive cream, and a cleansing cream, a stick cosmetic for the skin including a lipstick and an eyeshadow, a pasty cosmetic for the hair including a pomade, or a liquefied or emulsified cosmetic for the hair including a hair dresser and a hair rinse.
An ointment comprising an ointment ingredient and a steroid ester obtained by reacting at least one steroid component which is a trimethylsteroid or a mixture comprising said trimethylsteroid, and wherein the trimethylsteroid is dihydrolanosterol, lanosterol, dihydroagnosterol, agnosterol, cycloartanol, cycloartenol, 2,4-methylenecycloartanol, cyclolaudenol, cyclobranol, isocholesterol or a mixture thereof, with at least one carboxylic acid-based component selected from the group consisting of free .alpha.-branched carboxylic acids having a general formula ##STR9## (where R.sup.1 is an alkyl group having at least two carbon atoms, and R.sup.2 is an alkyl group having at least four carbon atoms) and reactive derivatives of said .alpha.-branched carboxylic acid which are acid halides or anhydrides
The cosmetic of claim 1, 15, 32, or 42, wherein said cosmetic ingredient is a cosmetic oil, wax, surfactant, wetting agent, pigment, perfume, antioxidant, detergent or mixtures thereof.
A cosmetic comprising a cosmetic ingredient and a steroid ester obtained by reacting at least one steroid component which is cholesterol with at least one carboxylic acid-based component selected from the group consisting of free .alpha.-branched carboxylic acids having a general formula ##STR12## (where R.sup.1 is an alkyl group having at least two carbon atoms, and R.sup.2 is an alkyl group having at least four carbon atoms) and reactive derivatives of said .alpha.-branched carboxylic acid which are acid halides or anhydrides, said cosmetic is a creamy cosmetic for the skin including a cold cream, a nutritive cream, and a cleansing cream, a stick cosmetic for the skin including a lipstick and an eyeshadow, a pasty cosmetic for the hair including a pomade, or a liquefied or emulsified cosmetic for the hair including a hair dresser and a hair rinse.
The cosmetic according to claimm 37, wherein the acid chloride is selected from the group consisting of 2-ethylhexanoic acid chloride, 2-hexyldecanoic acid chloride, 2-heptylundecanoic acid chloride, a chloride of an acid of the chemical structure:
An ointment comprising an ointment ingredient and a steroid ester obtained by reacting at least one steroid component which is cholesterol with at least one carboxylic acid-based component selected from the group consisting of free .alpha.-branched carboxylic acids having a general formula ##STR15## (where R.sup.1 is an alkyl group having at least two carbon atoms, and R.sup.2 is an alkyl group having at least four carbon atoms) and reactive derivatives of said .alpha.-branched carboxylic acid which are acid halides or anhydrides
Dependencies are inferred from the claim text.