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. 03, 2016
Filed:
Oct. 15, 2013
Applicant:
Saudi Basic Industries Corporation, Riyadh, SA;
Inventors:
Alexander Stanislaus, Bangalore, IN;
Venkata Ramanarayanan Ganapathy Bhotla, Bangalore, IN;
P S Sreenivasan, Bangalore, IN;
Philip Wesley Bell, Mount Vernon, IN (US);
Assignee:
SAUDI BASIC INDUSTRIES CORPORATION, Riyadh, SA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J 11/28 (2006.01); C07C 37/00 (2006.01); C08G 64/38 (2006.01); C08J 11/16 (2006.01);
U.S. Cl.
CPC ...
C07C 37/00 (2013.01); C08G 64/38 (2013.01); C08J 11/16 (2013.01); C08J 2369/00 (2013.01); Y02W 30/705 (2015.05);
Abstract
A method for recovering a dihydroxy aromatic compound and urea from a polycarbonate-containing composition comprising a polycarbonate and a phosphorus-containing flame retardant, comprising contacting the composition with ammonia in the presence of a swelling solvent for a time sufficient to depolymerize the polycarbonate producing a dihydroxy aromatic compound and urea.