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:
Aug. 30, 2016
Filed:
Feb. 07, 2012
Eun-jung Choi, Daejeon, KR;
Chang-hun Han, Daejeon, KR;
Jae-bum Seo, Daejeon, KR;
Beom-seok Kim, Daejeon, KR;
Byoung-il Kang, Daejeon, KR;
Nam-jeong Lee, Daejeon, KR;
Su-kyung Kim, Daejeon, KR;
Jun-geun Um, Daejeon, KR;
Da-eun Sung, Daejeon, KR;
Joong-hoon Lee, Daejeon, KR;
Eun-Jung Choi, Daejeon, KR;
Chang-Hun Han, Daejeon, KR;
Jae-Bum Seo, Daejeon, KR;
Beom-Seok Kim, Daejeon, KR;
Byoung-Il Kang, Daejeon, KR;
Nam-Jeong Lee, Daejeon, KR;
Su-Kyung Kim, Daejeon, KR;
Jun-Geun Um, Daejeon, KR;
Da-Eun Sung, Daejeon, KR;
Joong-Hoon Lee, Daejeon, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
There is provided a method for preparing an acrylic copolymer resin for an optical film includes: suspension-polymerizing an acrylic monomer containing a benzene ring, an alkyl(meth)acrylate monomer, and a (meth)acrylic acid monomer to prepare a copolymer; and thermally treating the copolymer at a temperature ranging from 240° C. to 300° C. As the method for preparing an acrylic copolymer of the present invention, a resin having an effectively lowered CTE can be manufactured by inducing the formation of a glutaric anhydride structure by using suspension polymerization that facilitates adjustment of the molecular weight of a resin.