The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 12, 2002
Filed:
Dec. 10, 1999
Applicant:
Inventors:
Hiroyuki Terasaki, Wakayama, JP;
Akira Fujiu, Wakayama, JP;
Kazuhisa Fukuhara, Tokyo, JP;
Yoshihisa Kitano, Tokyo, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A61K 7/06 ;
U.S. Cl.
CPC ...
A61K 7/06 ;
Abstract
The present invention provides a method for the easy preparation of a mixture comprising betaine alkyl ester which gives good softness, smoothness and oily feeling to hair. Thus, according to the present invention, a specific monohalogen carboxylic acid alkyl-ester is made to react with a specific tertiary amine using a specific long-chain alcohol as a reaction solvent and, after a specific betaine alkyl ester is obtained, the excessive above-mentioned tertiary amine is removed whereupon a mixture comprising the said long-chain alcohol and the said betaine alkyl ester is obtained.