Prepolymeric polyols containing mesogenic units

Details Prepolymeric polyols containing mesogenic units Prepolymeric polyols containing mesogenic units

1991-07-19

1993-04-20

Dees, Jose G.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

534807, 534810, 534816, 534823, 534831, 534839, 534852, 560 63, 560 65, 560 66, 560 72, 560 73, 560 76, 560 83, 560 85, 560 35, 560 37, 560 60, 560 91, 560 92, 560 94, 560 96, 560109, 556432, 556489, C07C24506, C07C 6976, C07C22900

Patent

active

052044548

ABSTRACT:
Prepolymer polyols containing mesogenic moieties useful as reactants for the preparation of resinous materials are disclosed. Synthesized by condensing a polyether polyol with bifunctional mesogenic diacids, or diesters, the compounds of the invention are characterized by their reasonably low melt temperature which renders them suitable as additive materials in polymeric molding compositions and as precursors for the preparation of resinous materials.
The liquid crystalline properties of the prepolymers of the invention were found to depend on the type and molecular weight of the glycols and on the molar ratio between the glycols and the mesogenic reactant.

REFERENCES:
patent: 4412059 (1983-10-01), Krigbaum et al.
patent: 4617371 (1986-10-01), Blumstein et al.
patent: 4698397 (1987-10-01), Toya et al.
patent: 4745135 (1988-05-01), Thomas et al.
patent: 4798849 (1989-01-01), Thomas et al.
Liquid Crystal Polymers VII, W. J. Jackson et al pp. 307-326 1985, Journal of Applied Polymer Science: Applied Polymer Symposium.

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