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:
Jul. 26, 2016
Filed:
Jan. 31, 2014
Applicant:
Xerox Corporation, Norwalk, CT (US);
Inventors:
Assignee:
XEROX CORPORATION, Norwalk, CT (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G 61/12 (2006.01);
U.S. Cl.
CPC ...
C08G 61/126 (2013.01); C08G 2261/12 (2013.01); C08G 2261/1412 (2013.01); C08G 2261/312 (2013.01); C08G 2261/3221 (2013.01); C08G 2261/3222 (2013.01); C08G 2261/3223 (2013.01); C08G 2261/3243 (2013.01); C08G 2261/334 (2013.01); C08G 2261/344 (2013.01); C08G 2261/364 (2013.01); C08G 2261/411 (2013.01); C08G 2261/414 (2013.01); C08G 2261/712 (2013.01);
Abstract
Processes for purifying diketopyrrolopyrrole (DPP) copolymers are disclosed. An organic phase containing the DPP copolymer is treated with an aqueous ammonia solution and then with a palladium scavenger. The DPP copolymer is then isolated, and has a very low palladium content. The resulting DPP copolymer has high mobility.