Title:
PERFLUOROCYCLOPENTENE DERIVATIVE, PHOTOCHROMIC MATERIAL, OPTICAL RECORDING MEDIUM AND OPTICAL RECORDING
Document Type and Number:
Japanese Patent JP3404156
Kind Code:
B
Abstract:
PURPOSE: To obtain a new perfluorocyclopentene derivative useful as an optical recording medium improved in regenerative cycle of recordings, having high degree of isomerization, high optical stability of isomerized molecules to a laser beam in time of read-out and a high threshold value.
CONSTITUTION: This perfluorocyclopentene derivative is expressed by formula I, II or III [R1 is H or a lower alkyl; R2 is a lower alkyl; R is H, an alkyl, an alkoxy, cyano, etc.; (n), (k) and (m) are each 1-5], e.g. 1,2-bis[2,4-dimethyl-5-(4- N-phenylaminophenyl)thiophen-3-yl]perfluorocyclopentene, etc. The perfluorocyclopentene derivative is obtained by condensing a bisiodoarylthienylperfluorocyclopentene derivative with a specific amino compound in a usual method.
Inventors:
Sugai, Akio
Irie, Masahiro
Irie, Masahiro
Application Number:
JP1994000277882
Publication Date:
February 28, 2003
Filing Date:
November 11, 1994
Export Citation:
Assignee:
MITA IND CO LTD
Irie, Masahiro
Irie, Masahiro
International Classes:
G03C1/73; C07D333/20; C07D495/04; C09K9/02; G11B7/00; G11B7/0045; G11B7/24; G11B7/244; G11B7/30; G03C1/73; C07D333/00; C07D495/00; C09K9/02; G11B7/00; G11B7/24; (IPC1-7): C07D333/20; C07D495/04; C09K9/02; G03C1/73; G11B7/00; G11B7/24
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