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:
Dec. 29, 2015
Filed:
Sep. 07, 2011
Applicants:
Stephan Rüdiger Blum, Calgary, CA;
Katharina Klein, Paderborn, DE;
Wolfgang Bremser, Dahl, DE;
Inventors:
Assignee:
WHITEFOX TECHNOLOGIES LIMITED, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 73/18 (2006.01); C08G 73/06 (2006.01);
U.S. Cl.
CPC ...
C08G 73/0677 (2013.01); C08G 73/18 (2013.01);
Abstract
The present disclosure provides methods for modifying and cross-linking polybenzimidazoles, PBI. In one embodiment, the polybenzimidazole reacts with a compound, which has a halogen and a double bond functionality and which comprises a halogen and an organic group to form modified polymers by means of a nucleophilic substitution of the amine proton of the benzimidazole functionality in a solution, and a functional group is connected via each resulting free double bond and/or the polymers that are thus modified are cross-linked.