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. 12, 2021
Filed:
Sep. 12, 2016
Mitsubishi Gas Chemical Company, Inc., Tokyo, JP;
Yuichiro Satake, Kanagawa, JP;
Yasuaki Yoshimura, Kanagawa, JP;
Eiichi Honda, Kanagawa, JP;
Takashi Motoi, Okayama, JP;
Mitsuharu Kitamura, Niigata, JP;
MITSUBISHI GAS CHEMICAL COMPANY, INC, Tokyo, JP;
Abstract
A polyester resin having a diol constitutional unit and a dicarboxylic acid constitutional unit, wherein 20 to 100 mol % of the diol constitutional unit is a constitutional unit derived from a diol having a dinorbornane ring; a glass transition temperature of the polyester resin is 90° C. or higher; an amount of heat of a crystallization exothermic peak in temperature drop of the polyester resin is 5 J/g or less; and a yellow index (YI) value as measured by a reflection method according to JIS K 7103 is 10 or less.