High modulus cholesteric mesophase polymers

Details High modulus cholesteric mesophase polymers High modulus cholesteric mesophase polymers

1980-08-20

1983-10-25

Hoke, V. P.

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

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

2642902, 356403, 427163, 428215, 428220, 428910, 525440, 525448, 525450, 528288, 528292, 528332, C08G 6936, C08G 6300

Patent

active

044120591

ABSTRACT:
A polymeric material which is capable of forming high modulus, biaxially orientable structures of a cholesteric mesophase, wherein said polymeric material comprises an optically active monomer which is condensation co-polymerized with at least one p-phenylene containing monomer which is itself capable of forming a polymer exhibiting a nematic mesophase, or which is capable of being copolymerized with a second monomer to form a nematic mesophase, or which is capable of being copolymerized with racemic mixture of said optically active monomers to form a nematic mesophase, wherein the resulting copolymer is characterized by a degree of inflexibility sufficient to form a mesophase and wherein said optically active monomer is present in said polymer after copolymerization in an amount sufficient to impart optical activity to said polymer sufficient to form a cholesteric mesophase.

REFERENCES:
patent: 2956987 (1960-10-01), Caldwell et al.
patent: 3352836 (1967-11-01), Schmitt et al.
patent: 3408334 (1968-10-01), Caldwell et al.
patent: 3671524 (1972-06-01), Suzuki
patent: 3991016 (1976-11-01), Morgan
patent: 4118372 (1978-10-01), Schaefgen
Macromolecules 10, No. 6, Nov./Dec. 1977, pp. 1401-1406, M. Panar et al.
CA 82 140624z, 112378d, 98631x.
CA 83 164632x, 179651b.
CA 84 106246j.

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