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. 07, 2021
Filed:
Apr. 02, 2020
Applicant:
Zeon Corporation, Tokyo, JP;
Inventors:
Kensaku Fujii, Tokyo, JP;
Takashi Houkawa, Tokyo, JP;
Takuya Komatsubara, Tokyo, JP;
Yasuhiro Shimizu, Tokyo, JP;
Assignee:
ZEON CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 232/00 (2006.01); C08G 61/08 (2006.01); C08F 220/18 (2006.01); C08F 232/08 (2006.01); C08F 132/08 (2006.01); C08F 8/04 (2006.01); C08F 232/04 (2006.01); C08F 4/6592 (2006.01); C07C 13/64 (2006.01); G01N 25/48 (2006.01); G01R 33/46 (2006.01);
U.S. Cl.
CPC ...
C08G 61/08 (2013.01); C08F 8/04 (2013.01); C08F 132/08 (2013.01); C08F 220/18 (2013.01); C08F 232/00 (2013.01); C08F 232/04 (2013.01); C08F 232/08 (2013.01); C07C 13/64 (2013.01); C08F 4/6592 (2013.01); C08G 2261/122 (2013.01); C08G 2261/3325 (2013.01); C08G 2261/418 (2013.01); C08G 2261/60 (2013.01); C08G 2261/62 (2013.01); G01N 25/4866 (2013.01); G01R 33/46 (2013.01);
Abstract
The present invention provides: a copolymer (A) which is a copolymer obtained by copolymerizing one or plural cycloolefin monomers and one or plural acyclic olefin monomers, or a copolymer obtained by copolymerizing two or more cycloolefin monomers, wherein the glass transition temperature (Tg) of the copolymer is 100° C. or higher, the refractive index of the copolymer is 1.545 or higher, and the Abbe's number of the copolymer is 50 or larger, and at least one of the cycloolefin monomers is a deltacyclene.