Thermotropic copolyester containing units from a mixture of dica

Details Thermotropic copolyester containing units from a mixture of dica Thermotropic copolyester containing units from a mixture of dica

1992-10-28

1994-04-12

Anderson, Harold D.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

528176, 528271, C08G 63133

Patent

active

053026896

ABSTRACT:
A thermotropic liquid crystalline copolyester containing two different recurring units with each of the units linked to another via an ester bond, the two different recurring units having the respective formulae ##STR1## in which X is ##STR2## wherein m is 4-10, inclusive; and Y is ##STR3## wherein n is 11-18, inclusive; and the molar ratio of X to Y in the copolyester ranging from 9:1 to 2:8.

REFERENCES:
Asrar et al., "Thermotropic Homopolyesters. I. The Preparation and Properties of Polymers Based on 4,4'-Dihydroxybiphenyl" Journal of Polymer Science 1119-1131, 1983.
Blumstein et al., "Synthesis and Properties of Some Polyesters with Mesogenic Groups and Flexible Spacers in the Main Chain" Polymer 23:47-52, 1982.
Tsai et al., "Further Characteriztion of the Structure and the Thermal Transistors of Poly(p-Oxybenzoate co-p-Phenylene Isophthalate) Polymers" 40:1499-1510, 1990.

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