Kaolinite aggregation using sodium silicate

Details Kaolinite aggregation using sodium silicate Kaolinite aggregation using sodium silicate

1988-01-28

1989-03-28

Schain, Howard E.

Compositions: coating or plastic

Materials or ingredients

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

106 84, 106486, 501146, 501147, 501150, 501148, 427391, 427361, 4285375, 428688, 428446, 162135, 1621816, 1621818, 1621817, 1621814, C04B 1400, C04B 3304, C09C 300, D21F 100

Patent

active

048160741

ABSTRACT:
A process is described in which a structured aggregated kaolin pigment is prepared by mixing substantially dry kaolin in particulate form with an aqueous alkali metal silicate to deposit on the surface of the kaolin particles a substantially molecular level of said silicate without formation of silica gel, drying the treated kaolin without calcination and exposing it to an acidic gas. The product is useful as a pigment in the coating or filling of paper.

REFERENCES:
patent: 4299807 (1981-11-01), Angel et al.
patent: 4419228 (1983-12-01), Cook et al.
patent: 4650521 (1987-03-01), Kuppelman et al.
patent: 4738726 (1988-04-01), Pratt et al.

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