Title:
SULFUR-CONTAINING (METH) ACRYLATE COMPOUND AND ITS USE
Document Type and Number:
Japanese Patent JP3556027
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a (meth)acrylate compound useful as an optical material improved in optical properties, high in refractive index and excellent in scratching resistance.
SOLUTION: This sulfur-containing (meth)acrylate compound is shown by formula I (R is H or methyl). The compound is obtained by reacting 1mol polythiol compound of formula II with 4-6mol (meth)acrylic acid chloride, etc. at -20 to 60°C. In order to remove hydrogen chloride evolving during the reaction, a base (e.g. trimethylamine) as a hydrogen chloride scavenger is preferably added to the reaction system. The compound of formula I is copolymerized with another monomer such as benzyl acrylate so that the content of the compound is ≥60wt.% based on the total of the compound and the monomer to give a sulfur-containing resin useful as an optical material.
Inventors:
Seiichi Kobayashi
Keiya Kawauchi
Suzuki Junyuki
Masao Imai
Kenichi Fujii
Keiya Kawauchi
Suzuki Junyuki
Masao Imai
Kenichi Fujii
Application Number:
JP29103095A
Publication Date:
August 18, 2004
Filing Date:
November 09, 1995
Export Citation:
Assignee:
Mitsui Chemicals, Inc.
International Classes:
G02B1/04; C07C327/22; C08F20/38; C08F28/02; C08F220/38; (IPC1-7): C07C327/22; C08F20/38; C08F220/38; G02B1/04
Domestic Patent References:
| JP7252207A | ||||
| JP1110666A | ||||
| JP6234733A |