Composition, and optical material and lens using same

Patent metadata

Field	Value
Publication number	US-12486352-B2
Application number	US-202118030847-A
Country	US
Kind code	B2
Filing date	Sep 10, 2021
Priority date	Oct 19, 2020
Publication date	Dec 2, 2025
Grant date	Dec 2, 2025

Abstract

A composition containing: a compound (a) represented by Formula (1):

wherein Ar represents an aromatic ring, m represents an integer of 2 to 8, n represents an integer of 0 to 6, provided that m+n is equal to or less than a number of carbon atoms that constitute the aromatic ring, and R 1 each independently represents an alkylthio group, an epoxyalkylthio group, a thiol group, a halogen group, a hydroxy group, a dialkylthiocarbamoyl group, or a dialkylcarbamoylthio group; and 1,2,3,5,6-pentathiepane (b).

First claim

The invention claimed is:

1 . A composition comprising:
a compound (a) represented by Formula (1):

wherein
Ar represents an aromatic ring,
m represents an integer of 2 to 8,
n represents an integer of 0 to 6,
provided that m+n is equal to or less than a number of carbon atoms that constitute the aromatic ring, and
R 1 each independently represents an alkylthio group, an epoxyalkylthio group, a thiol group, a halogen group, a hydroxy group, a dialkylthiocarbamoyl group, or a dialkylcarbamoylthio group; and
1,2,3,5,6-pentathiepane (b).

2 . The composition according to claim 1 , wherein m is 2 or 3.

3 . The composition according to claim 1 , wherein m+n is 2 to 6.

4 . The composition according to claim 1 , wherein a content of the compound (a) is 20 to 80 mass % with respect to a total mass of the composition.

5 . The composition according to claim 1 , wherein a content of the 1,2,3,5,6-pentathiepane (b) is 5 to 40 mass % with respect to a total mass of the composition.

6 . The composition according to claim 1 , further comprising a compound (c) represented by Formula (2):

wherein
p represents an integer of 0 to 4, and
q represents an integer of 0 to 2.

7 . The composition according to claim 6 , wherein a content of the compound (c) is 5 to 40 mass % with respect to a total mass of the composition.

8 . The composition according to claim 1 , further comprising a polythiol (d).

9 . The composition according to claim 8 , wherein the polythiol (d) includes at least one selected from the group consisting of 1,2,6,7-tetramercapto-4-thiaheptane, methanedithiol, (sulfanylmethyldisulfanyl)methanethiol, bis(2-mercaptoethyl)sulfide, 2,5-bis(mercaptomethyl)-1,4-dithiane, 1,2-bis(2-mercaptoethylthio)-3-mercaptopropane, 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 1,1,3,3-tetrakis(mercaptomethylthio)propane, tetramercaptopentaerythritol, 1,3-bis(mercaptomethyl)benzene, 1,4-bis(mercaptomethyl)benzene, and thiiranemethanethiol.

10 . The composition according to claim 1 , further comprising sulfur.

11 . The composition according to claim 1 , further comprising a prepolymerization catalyst.

12 . The composition according to claim 11 , wherein the prepolymerization catalyst includes at least one selected from the group consisting of 2-mercapto-1-methylimidazole, 2-methyl-N-imidazole, and 1,2,2,6,6-pentamethylpiperidyl methacrylate.

13 . A pre-cured product obtained by prepolymerizing the composition according to claim 1 .

14 . An optical material obtained by curing the composition according to claim 1 .

15 . An optical lens comprising the optical material according to claim 14 .

Assignees

• Mitsubishi Gas Chemical Co

Inventors

• IMAGAWA Yousuke
• Takemura Kouhei
• Sugihara Ryosuke
• SADO Mariko

Classifications

• G02C7/02

  Lenses; Lens systems {; Methods of designing lenses} · CPC title

• G02B1/041 Primary

  Lenses · CPC title

• G02C7/00

  Optical parts (characterised by the material G02B1/00) · CPC title

• G02B1/04

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

• C07C321/14

  of an acyclic saturated carbon skeleton · CPC title