Selenium-containing transparent optical material
AssigneeMitsui Chemicals, Inc.
InventorsKoju Okazaki, Mamoru Tanaka, Shiro Honma, Hiroyuki Morijiri, Yoshinobu Kanemura, Masahiko Kusumoto
Life of this patent
Estimating the term…
Abstract
There are herein disclosed a transparent optical material containing at least one selenium atom, a plastic lens comprising the transparent optical material, and methods for preparing them. In addition, there are also disclosed novel selenium-containing compounds represented by the following formulae (1), (2) and (4) which are useful for the transparent optical material and the plastic lens: wherein symbols are as defined in the specification.
Claims3
A selenium-containing aliphatic compound having 2 or more functional groups which is represented by formula (4):
- (Z3)—(X2)s (4)
- wherein Z3 represents an Se atom or an alkylene group including at least one Se atom;
- X2 represents a functional group selected from an acryloyl group, methacryloyl group and thioepoxy group, or an alkyl residue having this functional group;
- and s represents an integer from 2 to 6.
Dependencies are inferred from the claim text.