Recording medium

Details Recording medium Recording medium

1988-08-19

1989-08-15

Michl, Paul R.

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

430 20, 430 21, 430945, 428 1, 3461351, 528328, G03C 1100, C09K 1900, G02F 103

Patent

active

048574279

ABSTRACT:
A recording medium having a base and a recording layer provided on said base, said recording layer consisting essentially of a thermotropic cholesteric liquid crystalline glutamate copolymer represented by the following general formula: ##STR1## wherein R.sub.1 is an alkyl, cycloalkyl, aryl or arylalkyl group having not more than 10 carbon atoms, R.sub.2 is an alkyl, cycloalkyl, aryl or arylalkyl group having 6 to 30 carbon atoms, provided R.sub.1 and R.sub.2 are not the same, and m and n are in the relation of 50.ltoreq.m+n.ltoreq.2,000, m
=80.about.10/20.about.90.

REFERENCES:
patent: 3119794 (1964-01-01), DeVries et al.
patent: 3655971 (1972-04-01), Haas et al.
patent: 4743675 (1988-05-01), Watanabe
Watanabe et al., Macromolecules, 17, 1004-1009, (1984).
Watanabe et al., Macromolecules, 18, 2141-2148, (1985).

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