Liquid crystal copolymer containing alkoxy-substituted para-phen

Details Liquid crystal copolymer containing alkoxy-substituted para-phen Liquid crystal copolymer containing alkoxy-substituted para-phen

1992-10-08

1995-02-14

Wu, Shean

Compositions

Liquid crystal compositions

525437, 525444, 525448, 528219, 528272, 528300, 528301, 528302, 528308, 5283086, C09K 1952, C08G 6300

Patent

active

053892860

ABSTRACT:
Random and block copolyesters which are liquid crystalline can be formed containing: (a) alkoxy-substituted para-phenylene terephthalate groups (i.e., derived from an analogously substituted hydroquinone reagent); and (b) alkylene-terephthalate groups (e.g., where the alkylene moiety contains 2 to 10 carbon atoms).

REFERENCES:
patent: 5171778 (1992-12-01), Dekkers et al.
patent: 5232778 (1993-08-01), Farris et al.
"Synthesis and characterization of extended rod thermotropic polyesters with polyoxyethylene pendant substituents", R. W. Lenz et al., Polymer, 1991, vol. 32, No. 9, pp. 1703-1712.
"Rigid rod polymers having flexible side chains, 1 Thermotropic poly(1,4-phenylene 2,5-dialkoxyterephthalate)s", M. Ballauff, Makromol. Chem., Rapid Commun. 7,407-414 (1986).

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