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. 01, 2014
Filed:
Jun. 08, 2011
Su-kyung Kim, Daejeon, KR;
Da-eun Sung, Daejeon, KR;
Chang-hun Han, Daejeon, KR;
Byung-il Kang, Daejeon, KR;
Jae-bum Seo, Daejeon, KR;
Eun-jung Choi, Daejeon, KR;
Byoung-kue Chun, Daejeon, KR;
Yu-taek Sung, Daejeon, KR;
Su-Kyung Kim, Daejeon, KR;
Da-Eun Sung, Daejeon, KR;
Chang-Hun Han, Daejeon, KR;
Byung-Il Kang, Daejeon, KR;
Jae-Bum Seo, Daejeon, KR;
Eun-Jung Choi, Daejeon, KR;
Byoung-Kue Chun, Daejeon, KR;
Yu-Taek Sung, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
The present invention relates to an acrylic copolymer having high heat resistance and high strength, and an optical film comprising the same, and more particularly, to an acrylic copolymer for optical films in which alkyl (meth)acrylate monomers; (meth)acrylate monomers comprising aromatic rings and/or aliphatic rings; and (meth)acrylamide monomers are included and polymerized. An acrylic copolymer according to the present invention is excellent in heat resistance while maintaining transparency. Further, an optical film comprising a compound resin including the acrylic copolymer has superior transparency and heat resistance and is excellent in formability, adhesion, retardation properties, and durability.