Polyester film and process for the preparation thereof

Details Polyester film and process for the preparation thereof Polyester film and process for the preparation thereof

1996-06-25

1999-10-26

Chen, Vivian

Stock material or miscellaneous articles

Liquid crystal optical display having layer of specified...

With charge transferring layer of specified composition

428327, 428364, 428401, 428480, 525437, 525444, B32B 502, B32B 2718, B32B 2736

Patent

active

059724390

ABSTRACT:
A novel polyester film and a process for its preparation are disclosed wherein said film is composed of (a) liquid crystal polyester; (b) non-liquid crystal polyester; and (c) fiberizer capable of substantially fiberizing said liquid crystal polyester (a). Said polyester film shows remarkable improvements in various properties compared with the prior art polyester films: polyester film according to the present invention exhibits: (a) a high modulus of elasticity; (b) a high toughness; (c) a small content of: (1) oligomer, (2) thermal decomposition products and (3) gelation products; and (d) excellent electrical properties, so that this film can be used as a base film for electrical insulating material, capacitors, magnetic recording mediums, etc.

REFERENCES:
patent: 4980232 (1990-12-01), Prevorsek et al.
patent: 5043400 (1991-08-01), Tsuruta et al.
patent: 5225489 (1993-07-01), Prevorsek et al.
patent: 5256759 (1993-10-01), Kuo
patent: 5395470 (1995-03-01), Toh et al.
patent: 5529620 (1996-06-01), Corbett et al.
patent: 5626703 (1997-05-01), Tomita et al.

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