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:
May. 25, 2004
Filed:
Feb. 21, 2003
Applicant:
Inventors:
Assignee:
Dow Global Technologies Inc., Midland, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F 5/20 ; C08C 1/900 ; B01J 3/900 ;
U.S. Cl.
CPC ...
C08F 5/20 ; C08C 1/900 ; B01J 3/900 ;
Abstract
A strong-acid cation exchange resin in acid form is contacted with an alkylcarhamoyl alkylthioester in the presence of water for producing a strong-acid cation exchange resin comprising a plurality of acid groups being partially neutralized with a mercaptoalkylamine. The produced partially neutralized cation exchange resin is useful as a catalyst in a process of producing a bisphienol by reaction of a phenolic compound with a carhonyl compound.