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:
Oct. 14, 1997
Filed:
May. 17, 1995
Applicant:
Inventors:
Takeshi Tomifuji, Wakayama, JP;
Hiroshi Abe, Wakayama, JP;
Yoshihisa Matsumura, Wakayama, JP;
Yasumitsu Sakuma, Wakayama, JP;
Assignee:
Kao Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
554158 ; 554125 ; 554141 ; 554145 ; 502 77 ; 502 78 ;
Abstract
A process for preparing branched chain fatty acids or alkyl esters thereof comprising at least a step wherein unsaturated fatty acids having 10 to 25 carbon atoms, alkyl esters thereof or mixtures thereof are subjected to skeletal isomerization reaction in the presence of water or a lower alcohol at a temperature of 150.degree. to 350.degree. C. using a zeolite as a catalyst, the zeolite having a linear pore structure of pore size that is small enough to retard dimerization and large enough to allow diffusion of the branched chain fatty acids or alkyl esters thereof.