Title:
PHOTOCHROMIC COMPOUND, NAPHTHOL DERIVATIVE, CURABLE COMPOSITION, OPTICAL ARTICLE, LENS, AND EYEGLASSES
Document Type and Number:
WIPO Patent Application WO/2023/136213
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a photochromic compound that has excellent temperature dependence, decoloration speed, and durability; a naphthol derivative that can be an intermediate of the photochromic compound; a naphthol derivative that can be an intermediate of the photochromic compound; a curable composition that contains the photochromic compound; an optical article; a lens; and eyeglasses. An embodiment of the present invention provides a photochromic compound having a skeleton represented by formula (1). In formula (1), M is C, Si, or Ge. R1 is a group represented by formula (2). R2 is an alkyl group that may contain a halogen atom in a substituent, or a group represented by formula (2).
Inventors:
MIYAZAKI MASAYUKI (JP)
VENU SRINIVAS (JP)
MORI KATSUHIRO (JP)
VENU SRINIVAS (JP)
MORI KATSUHIRO (JP)
Application Number:
PCT/JP2023/000163
Publication Date:
July 20, 2023
Filing Date:
January 06, 2023
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
International Classes:
C07D497/04; C07D311/60; C07D311/78; C09K9/02; G02C7/10
Domestic Patent References:
| WO2013086248A1 | 2013-06-13 |
Foreign References:
| JP2008507618A | 2008-03-13 | |||
| JP2019182866A | 2019-10-24 | |||
| JP2007524857A | 2007-08-30 | |||
| JP2008535971A | 2008-09-04 |
Attorney, Agent or Firm:
KATO Ryuta et al. (JP)
Download PDF:
Previous Patent: SURFACE-COATED CUTTING TOOL
Next Patent: CONCENTRATION METHOD AND CONCENTRATION SYSTEM FOR RAW MATERIAL LIQUID
Next Patent: CONCENTRATION METHOD AND CONCENTRATION SYSTEM FOR RAW MATERIAL LIQUID