# US 11,999,824 B2 · Composition for optical material and optical material

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- Number: US 11,999,824 B2
- Document ID: US11999824B2
- Status: Granted
- Kind: B2
- Application number: 17/271,106
- Filed: 2019-08-21
- Published: 2021-08-19
- Granted: 2024-06-04
- Earliest claimed: 2018-09-07
- Assignees: Mitsubishi Gas Chemical Company, Inc.
- Applicants: Mitsubishi Gas Chemical Company, Inc.
- Inventors: Yousuke Imagawa; Hiroshi Horikoshi
- Web page: https://patentgrep.com/patent/US11999824B2

## CPC

- C08G 75/06: from cyclic thioethers
- G02B 1/04: made of organic materials, e.g. plastics (G02B1/08 takes precedence)
- C08G 75/08: from thiiranes
- G02B 1/041: {Lenses}
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present application provides a composition for an optical material containing a compound (a) and/or a compound (b) and a compound (c) which are described below. The proportion of the compound (a) and/or the compound (b) is 0.001-30.0% by mass. The compound (a) is a compound represented by formula (1). The compound (b) is a compound represented by formula (2). The compound (c) is an episulfide compound.

## Claims

### Claim 1

A composition for optical materials, the composition comprising a compound (a) and/or a compound (b), the composition further comprising a compound (c), wherein:
the compound (a) is a compound represented by formula (1):
the compound (b) is a compound represented by formula (2):
and
the compound (c) is an episulfide compound.

### Claim 2 (depends on 1)

The composition for optical materials according to claim 1, wherein an amount of the compound (a) and/or the compound (b) is 0.001 to 30.0% by mass.

### Claim 3 (depends on 2)

A method for producing an optical material, which comprises:
adding a polymerization catalyst to the composition for optical materials according to claim 2 in an amount of 0.0001 to 10 parts by mass relative to 100 parts by mass of the composition for optical materials, and
polymerizing and curing the resultant materials.

### Claim 4 (depends on 1)

A method for producing an optical material, which comprises:
adding a polymerization catalyst to the composition for optical materials according to claim 1 in an amount of 0.0001 to 10 parts by mass relative to 100 parts by mass of the composition for optical materials, and
polymerizing and curing the resultant materials.

### Claim 5 (depends on 4)

An optical material obtained by the method according to claim 4.

### Claim 6 (depends on 5)

An optical lens made of the optical material according to claim 5.