Indeno-fused naphthopyran compound particles, method of producing polymerizable composition and method of producing photochromic article

Patent metadata

Field	Value
Publication number	US-2024141178-A1
Application number	US-202118275030-A
Country	US
Kind code	A1
Filing date	Sep 30, 2021
Priority date	Mar 26, 2021
Publication date	May 2, 2024
Grant date	—

Abstract

There are provided indeno-fused naphthopyran compound particles having a degree of crystallization of 10.00% or less and a maximum primary particle size of 200 μm or less.

First claim

1 . Indeno-fused naphthopyran compound particles having a degree of crystallization of 10.00% or less and a maximum primary particle size of 200 μm or less.

2 . The particles according to claim 1 , which have a degree of crystallization of 7.00% or less.

3 . A method of producing a polymerizable composition, comprising mixing the particles according to claim 1 with one or more polymerizable compounds.

4 . A method of producing a photochromic article, comprising:
producing a polymerizable composition by the production method according to claim 3 ; and curing the produced polymerizable composition to form a cured product containing a photochromic compound.

5 . The method of producing a photochromic article according to claim 4 , comprising
forming a photochromic layer on a substrate directly or indirectly, wherein the cured product is the photochromic layer.

6 . The method of producing a photochromic article according to claim 4 ,
wherein the photochromic article is a spectacle lens.

7 . The method of producing a photochromic article according to claim 4 ,
wherein the photochromic article is a goggle lens.

8 . The method of producing a photochromic article according to claim 4 ,
wherein the photochromic article is a visor part of a sun visor.

9 . The method of producing a photochromic article according to claim 4 ,
wherein the photochromic article is a shield member of a helmet.

10 . A method of producing a polymerizable composition, comprising mixing the particles according to claim 2 with one or more polymerizable compounds.

11 . The method of producing a photochromic article according to claim 5 ,
wherein the photochromic article is a spectacle lens.

12 . The method of producing a photochromic article according to claim 5 ,
wherein the photochromic article is a goggle lens.

13 . The method of producing a photochromic article according to claim 5 ,
wherein the photochromic article is a visor part of a sun visor.

14 . The method of producing a photochromic article according to claim 5 ,
wherein the photochromic article is a shield member of a helmet.

Assignees

• Hoya Lens Thailand Ltd

Inventors

• Shimada Takuya
• Nushi Yusuke
• Yamashita Teruo

Classifications

• G02B1/04

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

• C09D5/29 Primary

  for multicolour effects · CPC title

• C07D311/94

  condensed with rings other than six-membered or with ring systems containing such rings · CPC title

• C08F222/1063

  of alcohol terminated polyethers · CPC title

• C08K5/1545

  Six-membered rings · CPC title