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:
Jul. 02, 2002
Filed:
Dec. 19, 2000
Applicant:
Inventors:
James Lawrence Spivack, Cobleskill, NY (US);
Jimmy Lynn Webb, Ballston Lake, NY (US);
Victoria Jean Eddy-Helenek, Scotia, NY (US);
Joseph Richard Wetzel, Watervliet, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07L 3/916 ;
U.S. Cl.
CPC ...
C07L 3/916 ;
Abstract
Silylmethanethiols have been found to be useful promoters in the acid catalyzed condensation reaction between phenol and acetone to afford bisphenol A. Silylmethanethiols provide improvements in both the rate and selectivity of bisphenol A formation relative to known thiol promoters such as 3-mercaptopropionic acid or hexanethiol.