PHOTOCHROMIC COMPOUND, NAPHTHOL DERIVATIVE, CURABLE COMPOSITION, OPTICAL ARTICLE, LENS, AND EYEGLASSES
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United States of America Patent
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Issued Date -
Mar 27, 2025
app pub date -
Jan 13, 2023
filing date -
Jan 13, 2023
priority date (Note) -
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status (Latency Note)
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Abstract
The purpose of the present invention is to provide: a photochromic compound having an excellent color fading rate and excellent durability; a naphthol derivative that can become an intermediate for the photochromic compound; and a curable composition, an optical article, a lens and eyeglasses each containing the photochromic compound. According to embodiments, a photochromic compound having a backbone represented by formula (1) is provided. In formula (1), M represents C, Si or Ge; R1 represents a haloalkyl group having 1 to 20 carbon atoms inclusive; R2 represents a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms inclusive or a substituted or unsubstituted haloalkyl group having 1 to 20 carbon atoms inclusive.
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International Classification(s)
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- C07D:HETEROCYCLIC COMPOUNDS
- C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- C09B:ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PROD....
- G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
- C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....
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