Title:
NOVEL SPIROOXAZINE COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/1989/007104
Kind Code:
A1
Abstract:
Novel spirooxazine compounds represented by general formula (A) or (A') are photochromic compounds having excellent resistance to fatigue due to repeated color changes and provide a choice of various hues. In said formulae the alpha ring represents a member selected from among 5-membered and 6-membered rings each having one nitrogen atom and optionally bound to a benzene or naphthalene ring, wherein the nitrogen atom is bound to a C1-20 alkyl group or the like; The beta ring represents a benzene or naphthalene ring; X represents O, S, Se or N-R1 (wherein R1 represents H, C1-20 alkyl, etc.); R2 and R3 each represents OH, amino, C1-20 alkoxy, halogen or the like; and k represents an integer of 0 to 2.
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Inventors:
YAMAMOTO SHINICHI (JP)
TANIGUCHI TAKASHI (JP)
TANIGUCHI TAKASHI (JP)
Application Number:
PCT/JP1989/000124
Publication Date:
August 10, 1989
Filing Date:
February 08, 1989
Export Citation:
Assignee:
TORAY INDUSTRIES (JP)
International Classes:
C07D498/20; C09K9/02; G03C1/685; G11B7/244; (IPC1-7): C07D498/10
Foreign References:
| JPH06263587A | 1994-09-20 |
Other References:
See also references of EP 0358774A1
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