PHOTOCHROMIC COMPOUND, PHOTOCHROMIC COMPOSITION, PHOTOCHROMIC ARTICLE, AND EYEGLASSES

Title:

PHOTOCHROMIC COMPOUND, PHOTOCHROMIC COMPOSITION, PHOTOCHROMIC ARTICLE, AND EYEGLASSES

Document Type and Number:

Japanese Patent JP2023111569

Kind Code:

A

Abstract:

To provide a photochromic article with a fast fading rate.SOLUTION: The present invention provides a photochromic compound expressed by general formula 1. In the formula, R represents an unsubstituted aliphatic monocycle having at most six carbon atoms.SELECTED DRAWING: None

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Inventors:

KAWAKAMI HIRONORI
KOBAYASHI TAKASHI
HIGUCHI TSUYOSHI

Application Number:

JP2022013481A

Publication Date:

August 10, 2023

Filing Date:

January 31, 2022

Export Citation:

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Assignee:

HOYA LENS THAILAND LTD

International Classes:

C09K9/02; C07D311/04; C07D413/10; C09B57/00; G02C7/10

Attorney, Agent or Firm:

Sykes Patent Attorney Corporation

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