Optical material composition, and application for same

Patent metadata

Field	Value
Publication number	US-9663618-B2
Application number	US-201615112507-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 31, 2015
Publication date	May 30, 2017
Grant date	May 30, 2017

Abstract

Provided is an optical material composition, with which an optical material is obtained having excellent quality such as excellent color tone and lightfastness, a low level of striae, and high transparency when polymerization-cured. Through use of the optical material composition, which includes a compound represented by formula (1) and an episulfide compound represented by formula (2), the ratio of the compound represented by formula (1) to the combined total amount of the compound represented by formula (1) and the episulfide compound represented by formula (2) being 0.001-5.0% by mass, it is possible to provide an optical material composition for manufacturing an optical material having a high refractive index, the optical material having excellent quality such as transparency, striae, color tone, and lightfastness. (In the formula, m represents an integer of 0-4, and n represents an integer of 0-2.)

First claim

The invention claimed is:

1. A composition for optical material, which comprises a compound represented by the following formula (1) and an episulfide compound represented by the following formula (2), wherein the content of the compound represented by formula (1) is 0.001% to 5.0% by mass relative to the total mass of the compound represented by formula (1) and the episulfide compound represented by formula (2):

(wherein m represents an integer of 0 to 4, and n represents an integer of 0 to 2).

2. The composition for optical material according to claim 1 , which comprises the compound represented by formula (2) in an amount of 40% to 99.999% by mass.

3. The composition for optical material according to claim 2 , which further comprises a polythiol.

4. The composition for optical material according to claim 3 , which further comprises a polyisocyanate.

5. The composition for optical material according to claim 1 , which further comprises sulfur.

6. A polymerization-curable composition, which comprises the composition for optical material according to claim 1 and a polymerization catalyst in an amount of 0.0001% by mass to 10% by mass relative to the total mass of the composition for optical material.

7. An optical material obtainable by curing the composition for optical material according to claim 1 .

8. An optical lens comprising the optical material according to claim 7 .

9. A method for producing an optical material, which comprises polymerization-curing the composition for optical material according to claim 1 by addition of a polymerization catalyst in an amount of 0.0001% to 10% by mass relative to the total mass of the composition for optical material.

10. The method for producing an optical material according to claim 9 , wherein the polymerizable compound represented by formula (2) and sulfur are partially subjected to polymerization reaction, followed by polymerization-curing.

11. An optical material obtainable by curing the composition for optical material according to claim 6 .

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• Takemura Kouhei
• Aoki Takashi

Classifications

• C08L81/02

  Polythioethers; Polythioether-ethers · CPC title

• C08G75/08 Primary

  from thiiranes · CPC title

• C08G18/38

  having heteroatoms other than oxygen (C08G18/32 takes precedence) · CPC title

• C08L81/00

  Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers · CPC title

• G02B1/04

  made of organic materials, e.g. plastics (G02B1/08 takes precedence) · CPC title