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:
Jun. 27, 2017
Filed:
Sep. 18, 2014
Dic Corporation, Tokyo, JP;
Yusuke Tajiri, Ichihara, JP;
Takanori Ootsubo, Ichihara, JP;
DIC CORPORATION, Tokyo, JP;
Abstract
An object of the present invention is to provide a resin composition that exhibits only a small change in birefringence due to external force and can be suitably used for production of optical members and to provide an optical film obtained by using the resin composition and a liquid crystal display device using the optical film. The provided resin composition for an optical material contains: a polymer (A) obtained by using (meth)acrylic acid or an alkyl(meth)acrylate; and a polyester resin (B). The polyester resin (B) is a polyester resin (B1) that has, in a main chain thereof, an aromatic ring-containing structural unit and has a number average molecular weight of 300 to 5,000, and each end of the main chain is capped with a monocarboxylic acid residue or a monoalcohol residue.