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:
Jun. 12, 2001
Filed:
Mar. 30, 2000
Applicant:
Inventors:
Mannepalli Lakshmi Kantam, Andhra Pradesh, IN;
Katuri Jeevaratnam, Andhra Pradesh, IN;
Boyapati Manoranjan Choudary, Andhra Pradesh, IN;
Chinta Reddy Venkat Reddy, Andhra Pradesh, IN;
Kondapuram Vijaya Raghavan, Andhra Pradesh, IN;
Lanka Venkata Sivaji, Andhra Pradesh, IN;
Thumma Someshwar, Andhra Pradesh, IN;
Assignee:
Council of Scientific and Industrial Research, New Delhi, IN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 3/916 ;
U.S. Cl.
CPC ...
C07C 3/916 ;
Abstract
The invention relates to a process for the preparation of high quality tetrabromobisphenol-A by reacting bisphenol-A with bromine and hydrogen peroxide as an oxidant in the presence of a heterogeneous catalyst in a biphase system consisting of water and water immiscible organic solvents.