发明名称 |
Optical film and a production method therefor |
摘要 |
The present invention provides an optical film and s retardation film characterized in that each of them includes: an acrylic resin; and 20-65 parts by weight of at least two graft copolymers containing a conjugated diene-based rubber, based on 100 parts by weight of the acrylic resin, wherein at least two of the graft copolymers have different particle sizes. The present invention also provides a production method therefore. |
申请公布号 |
US8911854(B2) |
申请公布日期 |
2014.12.16 |
申请号 |
US200912993785 |
申请日期 |
2009.06.03 |
申请人 |
LG Chem, Ltd. |
发明人 |
Kang Byoung-II;Han Chang-Hun;Lee Chan-Hong;Lee Dae-Woo;Seo Jae-Bum;Kim Sang-Seop |
分类号 |
B32B27/30;C08L51/04;B82Y20/00;C08J5/18;G02B5/30 |
主分类号 |
B32B27/30 |
代理机构 |
McKenna Long & Aldridge LLP |
代理人 |
McKenna Long & Aldridge LLP |
主权项 |
1. An optical film comprising:
a) an acrylic resin; and b) 20-65 parts by weight of a graft copolymer having a core-shell structure in which a conjugated diene-based rubber constitutes a core and an acrylic resin constitutes shell, based on 100 parts by weight of the acrylic resin, the graft copolymer b) including a graft copolymer having a particle size of 50 to 100 nm and a graft copolymer having a particle size of 200 to 400 nm, the acrylic resin a) including a copolymer of an acrylic monomer, an aromatic vinyl monomer and an acrylonitrile monomer; a copolymer of an acrylic monomer, an aromatic vinyl monomer and an acid anhydride; and a copolymer of an acrylic monomer, an aromatic vinyl monomer, an acrylonitrile monomer and an acid anhydride; or a combination thereof, and the conjugated diene-based rubber including ethylene-propylene-diene rubber, butadiene rubber, or a combination thereof, wherein the weight ratio of the conjugated diene-based rubber to the acrylic resin in the graft copolymer b) is 15-45:85-55, and wherein the acrylic resin in the graft copolymer b) is a copolymer of an acrylic monomer, an aromatic vinyl monomer and an acrylonitrile monomer. |
地址 |
Seoul KR |