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Title:
PHOTOCHROMIC POLYMERIZABLE COMPOSITION
Document Type and Number:
WIPO Patent Application WO/1999/037734
Kind Code:
A1
Abstract:
A photochromic polymerizable composition comprising (a) a polyfunctional (meth)acrylate monomer, (b) at least one member selected from the group consisting of three kinds of chromene compounds represented by specific structural formulae, and (c) a compound having at least one epoxy group in the molecule. The composition gives a photochromic material which is reduced in initial color, excellent in long-lasting photochromism, and suitable for use as, e.g., a spectacle lens.

Inventors:
HARA TADASHI (JP)
KAWABATA YUICHIRO (JP)
MOMODA JUNJI (JP)
NAGOH HIRONOBU (JP)
Application Number:
PCT/JP1999/000308
Publication Date:
July 29, 1999
Filing Date:
January 26, 1999
Export Citation:
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Assignee:
TOKUYAMA CORP (JP)
HARA TADASHI (JP)
KAWABATA YUICHIRO (JP)
MOMODA JUNJI (JP)
NAGOH HIRONOBU (JP)
International Classes:
G03F7/004; C08F20/20; C08F220/32; C08F234/02; C08K5/1515; C08K5/1545; C08L33/08; C09K9/02; G02B1/04; G02B5/23; G03C1/73; (IPC1-7): C09K9/02; C09K9/00; G02C7/10; G02B1/04; G02B5/23
Foreign References:
JPH09302336A1997-11-25
JPH08295690A1996-11-12
JPH08176139A1996-07-09
JPH08157467A1996-06-18
JPH0748566A1995-02-21
JPH09302011A1997-11-25
Other References:
See also references of EP 0984053A4
Attorney, Agent or Firm:
Suzuki, Ikuo (Atago 1-chome Minato-ku Tokyo, JP)
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