Title:
PLASTIC OPTICAL ARTICLE
Document Type and Number:
Japanese Patent JP3216197
Kind Code:
B2
Abstract:
PURPOSE: To provide a plastic optical article having excellent heat resistance, solvent resistance, chemical resistance and transparency and suitable as an optical member by disposing a transparent coating film on a transparent crosslinked resin having a glass transition temperature above a constant temperature.
CONSTITUTION: A transparent coating film preferably containing an organic polymer and a finely particulate inorganic oxide as main components is disposed on a transparent crosslinked resin comprising a copolymer and having a glass transition temperature of ≥130°C to provide the objective optical article. The copolymer is produced by polymerizing a composition containing 20-98wt.% of a monomer, preferably an N-methylmaleimide compound of the formula (R3 is H, 1-20C hydrocarbon group; R1, R2 are H, methyl, ethyl, etc.,) and 2-80wt.% of a multi-functional monomer having two or more unsaturated groups, such as ethylene glycol (meth)acrylate in their total amount of ≥30wt.%.
Inventors:
Shinichi Yamada
Naoki Shimoyama
Takashi Taniguchi
Shunji Kawano
Naoki Shimoyama
Takashi Taniguchi
Shunji Kawano
Application Number:
JP2696792A
Publication Date:
October 09, 2001
Filing Date:
February 13, 1992
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
B29C39/10; B32B27/00; B32B27/30; C08J7/04; C08L79/00; G06F3/041; B29K105/32; B29L11/00; (IPC1-7): C08J7/04; B32B27/30
Domestic Patent References:
| JP6280041A |