申请人:Okada Takashi
公开号:US20090069503A1
公开(公告)日:2009-03-12
An object of the present invention is to provide a novel sulfur-containing cyclic olefin resin having high transparency and high refractive index and being expected to utilization to optical materials such as various plastic lenses represented by a condensing lens, prism sheets, antireflective films, transparent coating materials such as an optical fiber coating material, optical films and the like, and its production method.
The present invention relates to a sulfur-containing cyclic olefin resin comprising a unit represented by the following general formula (1) and having a weight average molecular weight of from 1,000 to 1,000,000.
(Here, R
1
to R
6
each independently represents a hydrogen atom, an alkyl group having from 1 to 20 carbon atoms, an aralkyl group having from 1 to 20 carbon atoms, an aromatic group having from 1 to 20 carbon atoms, a cyano group, an alkoxy group having from 1 to 10 carbon atoms or a heterocyclic compound, further R
3
to R
6
may be a halogen atom, R
3
and R
4
, and R
5
and R
6
may form a ring containing carbon, oxygen, sulfur or nitrogen, R
7
and R
8′
, each independently represents a hydrogen atom or a methyl group, . . . represents a single bond or a double bond, and 1 and m each is 0 or 1.)