Composite silicate pigment

Details Composite silicate pigment Composite silicate pigment

1977-03-02

1978-09-26

Lesmes, George F.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Including a second component containing structurally defined...

162181C, 162181D, 428331, 428452, 428454, B32B 516

Patent

active

041171918

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 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: 2599094 (1952-06-01), Craig
patent: 2924549 (1960-02-01), Klein et al.
patent: 3227607 (1966-01-01), Mays et al.
patent: 3586523 (1971-06-01), Fanselow et al.
patent: 3690907 (1972-09-01), Kroening et al.

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