Composite silicate pigment

Details Composite silicate pigment Composite silicate pigment

1976-03-19

1977-05-31

Douglas, Winston A.

Compositions: coating or plastic

Materials or ingredients

106306, 106308B, 106309, 106 72, C09C 128

Patent

active

040267210

ABSTRACT:
A composite silicate pigment is prepared according to a precipitation reaction when spherical, hydrous metal silicate particles are precipitated on the planar surfaces of clay particles having a platelet-type structure. The result of the precipitation reaction is to produce a product having an unexpected improvement in optical efficiency as compared with the optical efficiency of the clay component alone. When incorporated in a sheet of paper or the like, the spherical metal silicate particles act as spacers between individual clay particles to produce void volume or light scattering sites which in turn provide improved optical properties to the paper.

REFERENCES:
patent: 2296637 (1942-09-01), Hanahan
patent: 3433704 (1969-03-01), Hecklau et al.

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