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:
Jan. 22, 1980
Filed:
Oct. 28, 1977
Applicant:
Inventors:
Henry Bader, Newton, MA (US);
Susan J Pavelko, Malden, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560152 ; 260399 ; 560 10 ; 560 15 ;
Abstract
A process for an acid catalyzed esterification of a mercapto-carboxylic acid followed by an in situ S-alkylation of the mercapto-ester by slow addition of aqueous base to a mixture of said ester and an alkylating agent.