Optical recording medium

Details Optical recording medium Optical recording medium

1988-09-26

1990-04-03

Robinson, Ellis P.

Stock material or miscellaneous articles

Circular sheet or circular blank

Recording medium or carrier

428 65, 428913, 346761, 3461351, 430270, 430495, 430945, 369288, B32B 302

Patent

active

049139487

ABSTRACT:
The invention provides an optical recording medium comprising a Langmuir-dgett film made from a mixture of a photochromic compound of the following formula, in which a carboxyl group and an alkyl group have been introduced to the 8-position and the 1'-position, respectively, at the same time, and a long-chain carboxylic acid: ##STR1## wherein R represents a hydrocarbon having 5 to 31 carbon atoms.

REFERENCES:
patent: 3867192 (1975-02-01), Hermans et al.
patent: 3984583 (1976-10-01), Hermans et al.
CA 109:219728w Myazaki Optical Recording Media having Spirogyran.
CA 109:180182m Ando Controls of Photochromic Reactions in L B Films.
CA 108:46886v, Dec. 85, Miyazaki Optical Recording Media.
CA 107:246762t, 1987, Miyazaki Optical Recording Media.

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