Polishing composition for memory hard disc

Details Polishing composition for memory hard disc Polishing composition for memory hard disc

1986-05-21

1987-11-10

Lieberman, Paul

Compositions: coating or plastic

Coating or plastic compositions

Polishes

51309, C09G 102

Patent

active

047055669

ABSTRACT:
A composition for polishing a layer of non-electrolysis nickel plating, an alumite layer or an aluminum substrate in a memory hard disc the composition comprising water, a polishing agent of aluminum oxide, and a polishing accelerator of one of nickel nitrate and aluminum nitrate, or two compounds, nickel nitrate and aluminum nitrate, or two compounds, nickel sulfate and aluminum nitrate.

REFERENCES:
patent: 3930870 (1976-01-01), Basi
patent: 4021263 (1977-05-01), Rosenblum
patent: 4225349 (1980-09-01), Koshiyama et al.
patent: 4475981 (1984-10-01), Rea
patent: 4601755 (1986-07-01), Melard et al.

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