# US 2016/0355641 A1 · Optical material composition, and application for same

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- Number: US 2016/0355641 A1
- Document ID: US20160355641A1
- Status: Published application
- Kind: A1
- Application number: 15/112,507
- Filed: 2016-03-01
- Published: 2016-12-08
- Earliest claimed: 2015-03-31
- Assignees: Mitsubishi Gas Chemical Company, Inc.
- Applicants: Mitsubishi Gas Chemical Company, Inc.
- Inventors: Kouhei TAKEMURA; Takashi AOKI
- Web page: https://patentgrep.com/patent/US20160355641A1

## CPC

- C08G 75/08: from thiiranes
- C08G 18/38: having heteroatoms other than oxygen (C08G18/32 takes precedence)
- C08L 81/00: 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
- C08L 81/02: Polythioethers; Polythioether-ethers
- G02B 1/04: made of organic materials, e.g. plastics (G02B1/08 takes precedence)
- G02B 1/041: {Lenses}
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## 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.)

## Claims

### Claim 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).

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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

### Claim 4 (depends on 3)

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

### Claim 5 (depends on 1)

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

### Claim 6 (depends on 1)

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.

### Claim 7 (depends on 1)

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

### Claim 8 (depends on 7)

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

### Claim 9 (depends on 1)

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.

### Claim 10 (depends on 9)

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.

### Claim 11 (depends on 6)

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