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. 06, 2003
Filed:
Oct. 12, 1999
Tiberiu Mircea Siclovan, Schenectady, NY (US);
Jimmy Lynn Webb, Ballston Spa, NY (US);
Sterling Bruce Brown, Niskayuna, NY (US);
Donald Joseph Buckley, Jr., Schenectady, NY (US);
James Edward Pickett, Schenectady, NY (US);
Joseph Anthony Suriano, Clifton Park, NY (US);
Paul Dean Sybert, Evansville, IN (US);
Daniel Joseph Brunelle, Burnt Hills, NY (US);
Margaret Louise Blohm, Niskayuna, NY (US);
Hongyi Zhou, Niskayuna, NY (US);
Georgia Dris Fishburn, Menands, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
Block copolyestercarbonates may be prepared by first conducting a reaction between at least one of resorcinol or an alkyl- or haloresorcinol and at least one aromatic dicarboxylic acid dichloride, preferably isophthaloyl dichloride, terephthaloyl dichloride or a mixture thereof, to produce a hydroxy-terminated polyester intermediate, and then conducting a reaction of the intermediate with a carbonate precursor, preferably in the presence of a dihydroxy compound such as bisphenol A. The products have excellent physical properties, including a high degree of weatherability. They may be blended with other polymers such as polycarbonates, poly(alkylene carboxylates), polyarylates, polyetherimides, and addition polymers to improve the weatherability thereof.