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. 15, 1991
Filed:
Dec. 10, 1990
Applicant:
Inventors:
Daniel R Chisholm, Warwick, NY (US);
Michael H Fisch, Wayne, NJ (US);
Mark E Flanagan, Ft. Collins, CO (US);
Richard D Peveler, Woodcliff Lake, NJ (US);
Assignee:
Witco Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
560152 ; 562512 ;
Abstract
3-alkylthiopropionic acids are provided which are a direct addition reaction product of an alkylmercaptan and acrylic acid of an alkali metal salt thereof, the reaction being carried out by heating the reactants in the presence of an aqueous alkaline solution having a pH of at least about 11. The acids can be esterified with pentaerythritol in order to form tetraesters which are especially useful as stabilizers for polymer resins and polymers.