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:
Apr. 01, 2025
Filed:
Jun. 01, 2020
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Toshihito Goto, Ibaraki, JP;
Noriyoshi Ogawa, Ibaraki, JP;
MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo, JP;
Abstract
Provided is a polycarbonate resin having excellent solubility in low-boiling-point non-halogenated solvents and having a high glass transition temperature. The polycarbonate resin includes constituent units (A) represented by general formula (1) (for example 4,4′-(4-methylpentane-2,2-diyl)diphenol) and constituent units (B) represented by general formula (2) (for example 4,4′-(1-phenylethane-1,1-diyl)diphenol), the molar ratio of the constituent units (A) to the constituent units (B), A/B, being 45/55 to 95/5, and includes a terminal structure selected from formula (T1) (for example p-t-butylphenol) and/or formula (T2) (for example 3-(2H-benzotriazol-2-yl)-4-hydroxyphenethylmethacrylate).