Abrasive composition and process for polishing

Details Abrasive composition and process for polishing Abrasive composition and process for polishing

1989-03-16

1990-04-10

Lieberman, Paul

Abrasive tool making process, material, or composition

With inorganic material

Metal or metal oxide

51293, 106 3, B24D 302

Patent

active

049157108

ABSTRACT:
An abrasive composition particularly suitable for polishing an aluminum-based substrate for a magnetic recording disc, the composition comprising: an alumineous abrasive, preferably in an amount of 3 to 25% by weight; a polishing accelerator of gluconic and/or lactic acid, preferably in an amount of 0.1 to 3% by weight; optionally with sodium gluconate and/or sodium lactate in an amount of 0.1 to 3% by weight; colloidal alumina, preferably in an amount of 0.1 to 5% by weight; and water, the composition typically having a pH of 3 to 5.

REFERENCES:
patent: 4226623 (1980-10-01), Koshiyama et al.
patent: 4389819 (1983-06-01), Williamson et al.
patent: 4645561 (1987-02-01), Rea
patent: 4685937 (1987-08-01), Hori et al.
patent: 4696697 (1987-09-01), Kitano et al.
patent: 4705566 (1987-11-01), Senda et al.
patent: 4769046 (1988-09-01), Senda et al.
patent: 4769073 (1988-09-01), Tasfu et al.
patent: 4853000 (1989-08-01), Potter

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