Polymerizable composition for optical material and optical material
AssigneeMitsui Chemicals, Inc.
InventorsHidetaka TSUKADA, Kenichi GOTO, Atsushi MIYATA, Toshihiko NAKAGAWA, Satoshi YAMASAKI, Hirokazu MORITA
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Abstract
Disclosed is a polymerizable composition for an optical material containing polyisocyanate (a) which is obtained from a plant-derived raw material and includes a modified product of aliphatic polyisocyanate, alicyclic polyisocyanate (b), and polyol (c) which has a hydroxyl value of 300 mgKOH/g to 650 mgKOH/g and the average number of functional groups of 2 or more and less than 7, and which is obtained from a plant-derived raw material.
Claims33
A polymerizable composition for an optical material, comprising:
- polyisocyanate (a) which is obtained from a plant-derived raw material and includes a modified product of aliphatic polyisocyanate;
- alicyclic polyisocyanate (b);
- and
- polyol (c) which has a hydroxyl value of 300 mgKOH/g to 650 mgKOH/g and the average number of functional groups of 2 or more and less than 7, and which is obtained from a plant-derived raw material.
A polymerizable composition for an optical material, comprising:
- polyisocyanate (a) which is obtained from a plant-derived raw material and includes a modified product of aliphatic polyisocyanate;
- alicyclic polyisocyanate (b);
- (poly)glycerin fatty acid esters (e) represented by General Formula (1);
- and
- polyol (d) which is a plant-derived compound;
- wherein in General Formula (1), R represents a C5 to C19 alkyl group or a C5 to C19 alkenyl group, the alkyl group or the alkenyl group may have a straight chain or a branched chain;
- X represents a hydrogen atom or a RCO group, wherein R represents a C5 to C19 alkyl group or a C5 to C19 alkenyl group), a plurality of Xs may be identical to each other or different from each other;
- and n represents an integer of 0 to 3.
Dependencies are inferred from the claim text.