Episulfide compound and optical material composition including same

Patent metadata

Field	Value
Publication number	US-10132961-B2
Application number	US-201615534280-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 31, 2015
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

A preferred embodiment of the present invention can provide an optical material composition that includes an episulfide compound that is represented by formula (1) and a polymerizable compound that is different from the episulfide compound that is represented by formula (1). The optical material composition makes it possible to stably and inexpensively store the polymerizable compound and to achieve an optical material that has a favorable hue and that has favorable lightfastness and transparency. (In the formula, m is an integer from 0 to 4, and n is an integer from 0 to 2.)

First claim

The invention claimed is:

1. An episulfide compound represented by Formula (1) below:

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

2. An optical material composition comprising the episulfide compound according to claim 1 and a polymerizable compound other than the episulfide compound represented by Formula (1).

3. The optical material composition according to claim 2 , wherein the content of the episulfide compound is 0.0001-5.0 mass % with respect to the total mass of the episulfide compound and the polymerizable compound.

4. The optical material composition according to claim 2 , comprising the polymerizable compound in an amount of 95.0-99.9999 mass %.

5. The optical material composition according to claim 2 comprising a compound represented by Formula (2) below as the polymerizable compound:

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

6. The optical material composition according to claim 5 , comprising the compound represented by Formula (2) in an amount of 40-99.999 mass %.

7. The optical material composition according to claim 5 , wherein the content of the episulfide compound is 0.0001-5.0 mass % with respect to the total mass of the episulfide compound and the compound represented by Formula (2).

8. A polymerizable/curable composition comprising the optical material composition according to claim 2 and a polymerization catalyst in an amount of 0.0001 mass %-10 mass % with respect to the total mass of the optical material composition.

9. An optical material obtained by curing the polymerizable/curable composition according to claim 8 .

10. An optical lens comprising the optical material according to claim 9 .

11. A method for producing an optical material, comprising the steps of: adding a polymerization catalyst to the optical material composition according to claim 2 in an amount of 0.0001 mass %-10 mass % with respect to the total mass of the optical material composition; and polymerizing/curing the resultant.

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• KARIYAZONO Kazuki
• Aoki Takashi

Classifications

• G02B1/041 Primary

  Lenses · CPC title

• C08L41/00

  Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a bond to sulfur or by a heterocyclic ring containing sulfur; Compositions of derivatives of such polymers · CPC title

• C08G75/06

  from cyclic thioethers · CPC title

• C08L81/02

  Polythioethers; Polythioether-ethers · CPC title

• C07D409/12 Primary

  linked by a chain containing hetero atoms as chain links · CPC title