Polymerizable composition for optical material, molded product, optical material, plastic lens, and laminated plastic lens

Patent metadata

Field	Value
Publication number	US-11807755-B2
Application number	US-202016828181-A
Country	US
Kind code	B2
Filing date	Mar 24, 2020
Priority date	Mar 29, 2019
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

Provided is a polymerizable composition for an optical material including: a polyisocyanate component which includes 1,4-bis(isocyanatomethyl)cyclohexane; a polyol component which includes a diol compound having a molecular weight of 400 or more and having two or more hydroxyl groups; and a polythiol component which includes a polythiol compound having two or more mercapto groups.

First claim

What is claimed is:

1. A polymerizable composition for an optical material, comprising:
a polyisocyanate component which includes 1,4-bis(isocyanatomethyl)cyclohexane;
a polyol component which includes a diol compound having a molecular weight of 400 or more and having two hydroxyl groups; and
a polythiol component which includes a dithiol compound having two mercapto groups,
wherein a ratio (b/c) of a number “b” of moles of the hydroxyl group of the polyol component to a number “c” of moles of the mercapto group of the polythiol component is 0.005 to 0.25, and

wherein an amount of 1,4-bis(isocyanatomethyl)cyclohexane with respect to a whole polyisocyanate component is 20 mol % or more and 80 mol % or less.

2. The polymerizable composition for an optical material according to claim 1 ,
wherein the diol compound having a molecular weight of 400 or more and having two hydroxyl groups includes a polyether diol.

3. The polymerizable composition for an optical material according to claim 2 ,
wherein the polyether diol includes polytetramethylene ether glycol.

4. The polymerizable composition for an optical material according to claim 1 ,
wherein the 1,4-bis(isocyanatomethyl)cyclohexane contains a trans-isomer at a proportion of 70 mol % to 99 mol %.

5. The polymerizable composition for an optical material according to claim 1 ,
wherein the polyisocyanate component further includes an aromatic polyisocyanate compound having two or more isocyanato groups.

6. The polymerizable composition for an optical material according to claim 5 ,
wherein the aromatic polyisocyanate compound includes at least one selected from the group consisting of 4,4′-diphenylmethane diisocyanate, 2,4′-diphenylmethane diisocyanate, and 2,2′-diphenylmethane diisocyanate.

7. The polymerizable composition for an optical material according to claim 1 ,
wherein the dithiol compound includes at least one selected from the group consisting of 1,3-propane dithiol and bis(2-mercaptoethyl) sulfide.

8. The polymerizable composition for an optical material according to claim 1 ,
wherein the polyisocyanate component and the polyol component form a prepolymer.

9. A molded product formed of a cured product of the polymerizable composition for an optical material according to claim 1 .

10. An optical material formed of the molded product according to claim 9 .

11. A plastic lens formed of the molded product according to claim 9 .

12. A laminated plastic lens including:
the plastic lens according to claim 11 ; and
a hard coat layer and an anti-reflective coating layer which are provided on at least one surface of the plastic lens.

Assignees

• Mitsui Chemicals Inc

Inventors

• Hanawa Takayuki

Classifications

• C08L75/04 Primary

  Polyurethanes · CPC title

• C08G18/3206

  aliphatic · CPC title

• C08G18/52

  Polythioethers · CPC title

• C08G18/753

  containing one isocyanate or isothiocyanate group linked to the cycloaliphatic ring by means of an aliphatic group having a primary carbon atom next to the isocyanate or isothiocyanate group · CPC title

• G02B1/041

  Lenses · CPC title