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:
Oct. 14, 2025
Filed:
Nov. 01, 2022
Applicant:
Teijin Limited, Osaka, JP;
Inventors:
Kazunori Nunome, Osaka, JP;
Manabu Matsui, Osaka, JP;
Takatsune Yanagida, Osaka, JP;
Kazuyoshi Ogasawara, Osaka, JP;
Keisuke Sato, Osaka, JP;
Kyosuke Yamada, Osaka, JP;
Tatsuya Oyama, Osaka, JP;
Assignee:
TEIJIN LIMITED, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/64 (2006.01); C08G 63/84 (2006.01); C08G 63/87 (2006.01); C08G 64/06 (2006.01); C08G 64/30 (2006.01); C08L 69/00 (2006.01); G02B 1/04 (2006.01);
U.S. Cl.
CPC ...
C08L 69/005 (2013.01); C08G 63/64 (2013.01); C08G 63/84 (2013.01); C08G 63/87 (2013.01); C08G 64/06 (2013.01); C08G 64/30 (2013.01); C08G 64/305 (2013.01); C08G 64/307 (2013.01); G02B 1/041 (2013.01);
Abstract
An object of the present invention is to provide a novel production method of a poly(ester)carbonate. The present invention relates to a production method of a poly(ester)carbonate, including subjecting a diol and a carbonate ester to a transesterification reaction in the presence of a catalyst, wherein the catalyst comprises aluminum or a compound thereof, and a phosphorus compound.