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. 05, 2016
Filed:
Jan. 08, 2014
Shingo Namiki, Fukuoka, JP;
Michiaki Fuji, Mie, JP;
Masanori Yamamoto, Fukuoka, JP;
MITSUBISHI CHEMICAL CORPORATION, Tokyo, JP;
Abstract
The invention is to provide polycarbonate resins having excellent light resistance, transparency, hue, heat resistance, thermal stability, and mechanical strength and to provide processes for efficiently and stably producing a polycarbonate resin which stably shows those performances. The invention includes: polycarbonate resins which at least contain structural units derived from a dihydroxy compound having the portion represented by formula (1) as part of the structure thereof and which have specific properties; and processes for producing the polycarbonate resins,CH—O  (1)where the case where the portion represented by formula (1) is part of —CH—O—H is excluded.