COMPOSITION OF GROUND LAYER OF MAGNETIC RECORDING MEDIUM

PURPOSE: To improve adhesion of a supporting body to a magnetic layer by using a composition consisting essentially of a polyester or a polyether containing an oxime based block isocyanate group as the ground paint. CONSTITUTION: This composition for a ground layer of the magnetic recording medium i...

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Bibliographic Details
Main Authors ISHIKAWA AKIRA, YAMASHITA KAZUTAKA, NAKAYAMA HIDEHIKO
Format Patent
LanguageEnglish
Published 09.08.1996
Edition6
Subjects
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
PHYSICS
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Summary:PURPOSE: To improve adhesion of a supporting body to a magnetic layer by using a composition consisting essentially of a polyester or a polyether containing an oxime based block isocyanate group as the ground paint. CONSTITUTION: This composition for a ground layer of the magnetic recording medium is composed primarily of a polyester or polyether containing 21 pieces of oxime based block isocyanate groups per molecule. In this composition for the ground layer of the magnetic recording medium, the isocyanate group (reproduced isocyanate group) blocked with a oxime based compd. is introduced in the polyester or the polyether. In this case, a reaction of the polyester or the polyether having the isocyanate group with the oxime based compd. may be executed in a solvent having no active hydrogen or without using solvent.
Bibliography:Application Number: JP19950010200