Pigmented microporous silica microspheres

Details Pigmented microporous silica microspheres Pigmented microporous silica microspheres

C - Chemistry, Metallurgy

09

D

6/212

C09D 1/00 (2006.01) C09B 67/20 (2006.01) C09C 1/00 (2006.01)

Patent

CA 1070055

ABSTRACT Pigmented silica microsphere having an average diameter from 2 µm to 100 µm and consisting essentially of from 10% to 70% by weight of particulate pigment, dispersed throughout a micro- porous silica matrix and, optionally, containing a coating of dense amorphous silica. The microspheres are produced by acidifying a water-in-oil emulsion. The pigmented silica microspheres are particularly useful as opacifying agents for coating compositions and as fillers for paper.

266320

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