Title:
BENZOSELENAZOLINE-SPIRO-VINYLPYRAN COMPOUND AND POLYMER COMPRISING THE SAME
Document Type and Number:
WIPO Patent Application WO/1991/013072
Kind Code:
A1
Abstract:
A photochromic compound of general formula (Ia), wherein R?1� represents C�1? to C�20? alkyl or aralkyl; R?2� to R?5� each represents hydrogen, C�1? to C�6? alkyl, aryl, aralkyl, C�1? to C�5? alkoxy, halogeno, cyano, trichloromethyl, trifluoromethyl or nitro; R?6� and R?7� each represents hydrogen, C�1?-C�6? alkyl, aryl, aralkyl, halogeno, cyano or nitro; and X represents oxygen or sulfur; a homopolymer of said compound; and a copolymer thereof with a vinylic compound of the general formula: CH�2?=CYZ, wherein Y represents H or CH�3?, and Z represents carboxyl, alkoxycarbonyl, cyano, carbamoyl, N,N-dimethylcarbamoyl, acetoxy, phenyl or methylphenyl.
Inventors:
MIYASHITA AKIRA (JP)
Application Number:
PCT/JP1991/000202
Publication Date:
September 05, 1991
Filing Date:
February 18, 1991
Export Citation:
Assignee:
OTSUKA KAGAKU KK (JP)
International Classes:
C07D517/10; G03C1/685; (IPC1-7): B41M5/26; C07D517/10; C08F30/00; C08F130/00; C09K9/02; G03C1/685
Domestic Patent References:
| WO1990010007A1 | 1990-09-07 |
Foreign References:
| JPS59227972A | 1984-12-21 | |||
| JPH0278685A | 1990-03-19 |
Other References:
See also references of EP 0470264A4
Attorney, Agent or Firm:
Saegusa, Eiji (2-1-2 Hiranomachi, Chuo-k, Osaka-shi Osaka 541, JP)
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