Method for preparing magnetic recording medium

Details Method for preparing magnetic recording medium Method for preparing magnetic recording medium

1989-03-10

1990-04-17

Pianalto, Bernard

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427128, 427129, 427131, 427132, 428337, 4284735, 428694, 428900, B32B 1508, B05D 512

Patent

active

049179594

ABSTRACT:
A method for preparing a magnetic recording medium, which comprises applying a thermal treatment at a temperature of 100.degree. C. or higher on a polymeric substrate comprising a polybiphenyl type imide having a molecular structure shown below, and then forming a magnetic layer on said substrate, and magnetic recording medium prepared by said method. ##STR1##

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