Title:
POLYESTER FILM FOR MAGNETIC RECORDING MEDIUM
Document Type and Number:
Japanese Patent JP3413906
Kind Code:
B2
Abstract:
PURPOSE: To obtain a polyester film excellent in scratch resistance, running durability at the time of repeated use and slitting characteristics and useful as a base film for a magnetic recording medium satisfying even the requirement of high image quality.
CONSTITUTION: This polyester film contains 0.005-5.0wt.% spherical silica particles having 0.1-2.0μm volume average particle diameter and a relative standard deviation of >0.5 in polyester and further contains aluminum oxide particles and/or zirconium oxide particles.
Inventors:
Akio Odashima
Kiyohiko Ito
Daiichi Kondo
Kiyohiko Ito
Daiichi Kondo
Application Number:
JP26026493A
Publication Date:
June 09, 2003
Filing Date:
October 18, 1993
Export Citation:
Assignee:
Toray Industries, Inc.
International Classes:
C08J5/18; B29C55/12; B32B27/36; C08K3/22; C08K3/36; C08L67/00; C08L67/02; G11B5/70; G11B5/73; G11B5/733; B29K67/00; B29K105/16; (IPC1-7): G11B5/70; B29C55/12; C08J5/18; C08K3/22; C08K3/36; C08L67/02
Domestic Patent References:
| JP462137A | ||||
| JP63234038A | ||||
| JP4151231A | ||||
| JP5230237A | ||||
| JP584820A | ||||
| JP3137814A | ||||
| JP2108232A | ||||
| JP4238111A | ||||
| JP554367A | ||||
| JP581644A | ||||
| JP4228502A |
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