Method of making a magnetic recording medium and composition

Details Method of making a magnetic recording medium and composition Method of making a magnetic recording medium and composition

1986-06-16

1988-01-12

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

252 6254, 252 6255, 252 6256, 427128, 427130, 427132, 428694, 428900, 528 25, 556404, H01F 1002

Patent

active

047191210

ABSTRACT:
An improved dispersant composition for magnetic media, comprising the reaction product of a phosphate ester and a silicon compound, is described. The silicon compound may be selected from diphenysilanediol or a trialkoxysilane having alkyl, alkenyl, haloalkyl, acryloxypropyl, methacryloxypropyl, or phenyl functionality. A magnetic coating composition and a process for producing a magnetic recording medium having improved magnetic properties, which employ the above dispersant composition, are also disclosed.

REFERENCES:
patent: 4076890 (1978-02-01), Yamada et al.
patent: 4271234 (1981-06-01), Schonafinger et al.
patent: 4419257 (1983-12-01), Frew et al.
patent: 4438156 (1984-03-01), Homola et al.
patent: 4501795 (1985-02-01), Takeuchi et al.

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