Methods of producing kaolin pigments

Details Methods of producing kaolin pigments Methods of producing kaolin pigments

1980-06-03

1981-11-10

McCarthy, Helen M.

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

106288B, 501150, 423264, 423328, C01B 3326, C04B 3304

Patent

active

042998077

ABSTRACT:
A method for producing kaolin pigments of improved coated brightness and opacity is provided in which kaolin is degritted, heated to the level of substantially minimum brightness and then leached. The kaolin may be comminuted before treatment, after heating or after leaching to control particle size distribution.

REFERENCES:
patent: 2339595 (1944-01-01), Williams et al.
patent: 2920832 (1960-01-01), Duke
patent: 3021195 (1962-02-01), Podschus et al.
patent: 3343973 (1967-09-01), Billue
patent: 3528769 (1970-09-01), Lyons
patent: 3853983 (1974-12-01), Abercrombie et al.
patent: 3961971 (1976-06-01), Abercrombie et al.

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