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US 9,690,027 B2Granted
Optical film and method of preparing same
AssigneeLG Chem, Ltd.
InventorsByoung-Il Kang, Chang-Hun Han, Jung-A Yoo, Song-Taek Oh
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Abstract
The present invention relates to an optical film and method of manufacturing the same. The optical film of the present invention includes an acrylic resin and a core-shell type graft copolymer wherein the core includes a conjugate diene rubber, and the shell includes an acrylic monomer, an aromatic vinyl monomer, and a maleimide monomer.
Claims4
A method of manufacturing an optical film, the method comprising:
- preparing a resin composition comprising an acrylic resin and a core-shell type graft copolymer, wherein the core comprises a conjugate diene rubber, and the shell is a copolymer comprising an acrylic monomer, an aromatic vinyl monomer, and a maleimide monomer, and
- using the resin composition to form the film,
- wherein a weight ratio of each monomer of the copolymer comprising the acrylic monomer, the aromatic vinyl monomer, and the maleimide monomer is 38-88:1-30:1-10.
A method of manufacturing a retardation film, the method comprising:
- preparing a resin composition including an acrylic resin and a core-shell type graft copolymer wherein the core comprises a conjugate diene rubber, and the shell is a copolymer comprising an acrylic monomer, an aromatic vinyl monomer, and a maleimide monomer,
- using the resin composition to form the film, and
- uniaxially or biaxially stretching the film,
- wherein a weight ratio of each monomer of the copolymer comprising the acrylic monomer, the aromatic vinyl monomer, and the maleimide monomer is 38-88:1-30:1-10.
1 more element
Dependencies are inferred from the claim text.