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. 18, 1989
Filed:
Sep. 12, 1986
Applicant:
Inventors:
Kazuo Kamaya, Toyonaka, JP;
Yukihisa Takisawa, Misawa, JP;
Assignee:
Sumitomo Chemical Company, Limited, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07 / ;
U.S. Cl.
CPC ...
549317 ;
Abstract
An ascorbic acid or erythorbic acid derivative represented by the following general formula: ##STR1## wherein n represents an integer of 4 to 20; and a process for producing said ascorbic acid or erythorbic acid derivative which comprises heat-treating 2,5,6-triacyl-substituted-ascorbic acid or -erythorbic acid represented by the following general formula: ##STR2## wherein n represents an integer of 4 to 20, in the presence of water and/or a lower aliphatic alcohol at a temperature of 30.degree. C. to 100.degree. C. and thereby selectively eliminating only the acyl group of the 2-position.