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. 21, 2016
Filed:
Jul. 02, 2014
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Krishna M. Bajjuri, San Jose, CA (US);
Jeannette M. Garcia, San Jose, CA (US);
James L. Hedrick, Pleasanton, CA (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 75/00 (2006.01); C08J 11/08 (2006.01); C08G 75/30 (2006.01); C08G 64/08 (2006.01); C08G 75/23 (2006.01);
U.S. Cl.
CPC ...
C08J 11/08 (2013.01); C08G 64/081 (2013.01); C08G 75/23 (2013.01); C08G 75/30 (2013.01); C08J 2369/00 (2013.01); C08J 2381/06 (2013.01); C08J 2381/10 (2013.01);
Abstract
Poly(ether sulfones) (PES) and poly(ether amide sulfones) (PEAS) were prepared from post-consumer polycarbonates and polyesters, respectively, using a single vessel in batch mode (all reactants present when heating was initiated). The depolymerization of the initial polymer occurs concurrently with step growth polymerization to form a product polymer having a number average molecular weight of at least 5000.