Title:
THIOACETAL COMPOUND, AND MONOMER COMPOSITION AND OPTICAL MATERIAL CONTAINING THE SAME
Document Type and Number:
Japanese Patent JP2000063347
Kind Code:
A
Abstract:
To obtain a thioacetal compound capable of improving its Abbe number while maintaining a high refractive index and transparency, having a small specific gravity and capable of aiming at its light weight, and a monomer composition and an optical material containing the same.
This thioacetal compound is a compound expressed by the following general formula [provided that (m) and (n) in the formula are each 1-4 integer]. The monomer composition contains the thioacetal compound and a polymerizable monomer capable of copolymerizing therewith. The optical material is obtained by polymerizing and curing the thioacetal or the monomer composition containing the thioacetal.
Inventors:
KUWATA MUTSUO
ICHIKAWA HIDEJI
NAKAMURA TOMOYUKI
ICHIKAWA HIDEJI
NAKAMURA TOMOYUKI
Application Number:
JP23102098A
Publication Date:
February 29, 2000
Filing Date:
August 17, 1998
Export Citation:
Assignee:
NOF CORP
International Classes:
G02C7/02; C07C321/20; C08F12/34; G02B1/04; (IPC1-7): C07C321/20; C08F12/34; G02B1/04; G02C7/02
Attorney, Agent or Firm:
Hironobu Onda