Biaxially oriented ordered polymer films

Details Biaxially oriented ordered polymer films Biaxially oriented ordered polymer films

1988-06-13

1990-10-16

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Physical dimension specified

428394, 428409, 2522991, 524417, 528193, 528313, 15624414, 264 85, 264 95, 26417767, 2642107, B32B 900

Patent

active

049634283

ABSTRACT:
This invention relates in general to the formation of multiaxially (e.g., biaxially) oriented films from high molecular weight lyotropic or thermotropic polymers (homopolymers, copolymers, and the like), wherein due to the processing conditions employed, the films have a controlled molecular orientation. The films of the present invention are preferably prepared from rod-like extended-chain, aromatic- heterocyclic polymers. These polymers generally fall into two classes; first, those that are modified in solution form, i.e., lyotropic liquid crystalline polymers; and second, those that are mod

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