Biaxially oriented polyester film

Details Biaxially oriented polyester film Biaxially oriented polyester film

1993-07-26

1995-07-18

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

428323, 428328, 428331, 428480, 428694ST, 428694SL, 428910, 528279, 528280, 528282, 528283, 524444, 524492, 524493, 524497, 524442, B32B 516, B32B 2736, B32B 2706, G11B 5704

Patent

active

054340004

ABSTRACT:
A biaxially oriented polyester film of a polyester composed of an aromatic dicarboxylic acid as a major acid component and at least one glycol component, said polyester film containing 100-20000 ppm of a particulate compound oxide composed of two or more metals (selected from Al, B, Si, Ti, Zr, W, and Fe) and oxygen whose average primary particle diameter is 0.005-0.1 .mu.m. The compound oxide contains 0.1-5 wt % by weight of chlorine. The polyester film finds use as a base film for magnetic tape with improved scratch resistance.

REFERENCES:
patent: 4221768 (1980-09-01), Inoue et al.
patent: 4292290 (1981-09-01), Tunison, III
patent: 4670319 (1987-06-01), Katoh et al.
patent: 4699770 (1987-10-01), Weston
patent: 4895763 (1990-01-01), Aoyama et al.
patent: 4970182 (1990-11-01), Shirasaki
patent: 4990400 (1991-02-01), Endo et al.
patent: 5169619 (1992-12-01), Yoshimoto et al.
patent: 5179051 (1993-01-01), Bedard et al.
patent: 5236683 (1993-08-01), Nakazawa et al.
patent: 5268135 (1993-12-01), Sasaki et al.

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