Liquid crystalline polyesters for optical data storage

Details Liquid crystalline polyesters for optical data storage Liquid crystalline polyesters for optical data storage

1991-02-19

1993-11-16

Stoll, Robert L.

Compositions

Liquid crystal compositions

428 1, 528176, 528191, 528192, 528194, C09K 1952, C08G 6300

Patent

active

052620816

ABSTRACT:
The invention comprises liquid crystalline polyesters suited to be used as a medium for optical data storage, especially reversible (or erasable) optical data storage. The polyesters comprise the polycondensation product of an aliphatic dicarboxylic acid or a derivative thereof and propane diol which on its center carbon bears a mesogenic substituent comprising two rings, either alicyclic or aromatic. Preferably also the dicarboxylic acid or derivative thereof is mesogenically substituted. The invention further comprises a medium for optical data storage containing polyesters of the above type.

REFERENCES:
patent: 4762901 (1988-08-01), Dhein et al.
patent: 4837745 (1989-06-01), Eich et al.
patent: 4886718 (1989-12-01), Eich et al.
patent: 4896292 (1990-01-01), Eich et al.
patent: 4959448 (1990-09-01), Wreesmann et al.
patent: 5024784 (1991-06-01), Eich et al.
Textbook of Practical Organic Chemistry, Vogel, A., 4th ed., Longman Ltd., 978, p. 754.

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