Stabilized magnetic metal pigment

Details Stabilized magnetic metal pigment Stabilized magnetic metal pigment

1988-01-25

1988-10-25

Lieberman, Paul

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106481, 252 6255, 75 05AA, 148105, C09C 162, C08J 704, H01F 104

Patent

active

047801484

ABSTRACT:
This invention relates to a stabilized ferromagnetic metal pigment which is produced by treating metal particles with a passivating reaction product comprising a silane-modified phosphate. The treated pigment is employed in the preparation of a magnetic recording medium which is resistant to storage at elevated temperature and humidity.

REFERENCES:
patent: 4069073 (1978-01-01), Tadokoro et al.
patent: 4093641 (1978-06-01), Plueddemann
patent: 4325739 (1982-04-01), Biermann et al.
patent: 4336310 (1982-06-01), Okuyama et al.
patent: 4437882 (1984-03-01), Umemura et al.
patent: 4475946 (1984-10-01), Matsufuji et al.
patent: 4501795 (1985-02-01), Takeuchi et al.
patent: 4640790 (1987-02-01), Sylvester et al.
patent: 4719121 (1988-01-01), Kimball

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