Process for producing oriented film

Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion

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264 13, 264 14, 264 24, 264 78, 264108, 526320, 526326, B29C 3508

Patent

active

048104337

ABSTRACT:
A process for producing a highly uniaxially oriented film is disclosed, comprising supporting a composition comprising two or more liquid crystal monomers displaying a nematic or smectic state and having a polymerizable functional group in the molecule thereof and a photopolymerization initiator on or between a support or supports having been subjected to orientation, and irradiating said composition with radiation while maintaining said composition in a liquid crystal state to cause polymerization of said composition. The resulting film is free from pinholes, strain or unevenness and is excellent in optical transparency.

REFERENCES:
patent: 2346784 (1944-04-01), Pollack
patent: 2887601 (1959-05-01), Bain
patent: 3459839 (1969-08-01), Hutfles
patent: 3927461 (1975-12-01), Peiperl
patent: 3968309 (1976-07-01), Matsuo et al.
patent: 4140369 (1979-02-01), Howland
patent: 4405733 (1983-09-01), Williams et al.
patent: 4412059 (1983-10-01), Krigbaum et al.

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