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:
Dec. 26, 2006
Filed:
Jun. 04, 2003
Pramod Shankar Kumbhar, Bangalore, IN;
Jegadeesh Thampi, Bangalore, IN;
Bharat Singh, Bangalore, IN;
John W. Fulmer, Mt. Vernon, IN (US);
Prashant Anil Tatake, Bangalore, IN;
Pramod Shankar Kumbhar, Bangalore, IN;
Jegadeesh Thampi, Bangalore, IN;
Bharat Singh, Bangalore, IN;
John W. Fulmer, Mt. Vernon, IN (US);
Prashant Anil Tatake, Bangalore, IN;
General Electric Company, Schenectady, NY (US);
Abstract
Use of a specific combination of catalysts for the first and second steps of the process for the conversion of CHP to BPA provides high yields of BPA and low impurity yields, without a requirement for the intermediate purification steps. In the first step, CHP is cleaved in the presence of a sulfated metal oxide catalyst such as sulfated Zirconia to produce phenol and acetone. In the second step, the phenol and acetone produced is reacted, preferably without intermediate purification, in the presence of a cation exchange resin catalyst that includes a cation exchange resin and a mercaptan or mercaptoalkanoic acid promoter to produce BPA.