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:
Apr. 21, 1987
Filed:
Sep. 25, 1984
Applicant:
Inventor:
Koichi Matsumura, Osaka, JP;
Assignee:
Takeda Chemical Industries, Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07H / ;
U.S. Cl.
CPC ...
536 185 ; 536-41 ; 536120 ; 536124 ;
Abstract
A process is disclosed for production of a sugar ketal, which comprises reacting a sugar with a ketone in the presence of antimony pentachloride or antimony pentafluoride. The process offers characteristic features that the reaction can be allowed to proceed fully in a small amount of the catalyst, the objective sugar ketal being obtained in improved yields.