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:
Feb. 27, 2018
Filed:
Sep. 18, 2012
Applicant:
Rhodia Operations, Aubersvilliers, FR;
Inventors:
Assignee:
RHODIA OPERATIONS, Aubersvilliers, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/10 (2006.01); C08L 79/08 (2006.01); C08K 7/06 (2006.01); C08K 3/00 (2018.01);
U.S. Cl.
CPC ...
C08G 73/1028 (2013.01); C08G 73/10 (2013.01); C08G 73/101 (2013.01); C08G 73/1007 (2013.01); C08G 73/1075 (2013.01); C08G 73/1082 (2013.01); C08K 7/06 (2013.01); C08L 79/08 (2013.01); C08K 3/00 (2013.01); Y10T 428/2982 (2015.01);
Abstract
The present invention relates to thermoplastic polyimides and to the synthesis thereof. The invention relates in particular to a method for manufacturing semi-aromatic thermoplastic polyimides by means of the solid-state polymerization of a solid ammonium carboxylate salt formed from an aliphatic diamine and an aromatic tetracarboxylic acid, thereby enabling powders having controlled particle sizes to be produced.