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. 17, 2016
Filed:
Jul. 11, 2012
Applicants:
Carlos Barreto Soler, Porsgrunn, NO;
Siw Bodil Fredriksen, Skien, NO;
Espen Ommundsen, Langesund, NO;
Inventors:
Carlos Barreto Soler, Porsgrunn, NO;
Siw Bodil Fredriksen, Skien, NO;
Espen Ommundsen, Langesund, NO;
Assignee:
NORNER IP AS, Stathelle, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 64/40 (2006.01); C08G 64/02 (2006.01); C08J 5/18 (2006.01); C08G 64/34 (2006.01); C08G 64/00 (2006.01);
U.S. Cl.
CPC ...
C08G 64/406 (2013.01); C08G 64/0208 (2013.01); C08G 64/34 (2013.01); C08J 5/18 (2013.01); C08J 2369/00 (2013.01);
Abstract
A process for purifying a poly(alkylene carbonate), said process comprising the steps of adding said poly(alkylene carbonate) to an aqueous solution, optionally in the presence of an acid compound, in the absence of any organic solvent. subsequently heating said blend to a temperature of up to 200° C.; and removing the aqueous phase and drying the residue.