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:
Jan. 14, 2025
Filed:
Feb. 03, 2020
Applicant:
Teijin Limited, Osaka, JP;
Inventors:
Shoichi Maekawa, Osaka, JP;
Yohei Okada, Osaka, JP;
Assignee:
TEIJIN LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08L 69/00 (2006.01); C08G 64/02 (2006.01); C08G 64/08 (2006.01); C08G 64/16 (2006.01); C08G 64/30 (2006.01); C08J 5/18 (2006.01); G02F 1/1333 (2006.01);
U.S. Cl.
CPC ...
C08L 69/005 (2013.01); C08G 64/0291 (2013.01); C08G 64/085 (2013.01); C08G 64/16 (2013.01); C08G 64/1608 (2013.01); C08G 64/307 (2013.01); C08J 5/18 (2013.01); C08L 69/00 (2013.01); G02F 1/133308 (2013.01); C08J 2369/00 (2013.01); C08L 2201/08 (2013.01); C08L 2201/10 (2013.01); C08L 2203/20 (2013.01); C08L 2205/025 (2013.01);
Abstract
A polycarbonate resin composition or a copolymer, comprising, as main repeating units, a carbonate unit (a-1) having a fluorene ring in a side chain, a carbonate unit (a-2) represented by the following formula (a-2): (wherein W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear-chain alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms optionally having a substituent, and u represents an integer of 0 to 3), and a carbonate unit (a-3) derived from 2,2-bis(4-hydroxyphenyl)propane, wherein