C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
C09C 3/04 (2006.01) C09C 3/10 (2006.01) C09D 17/00 (2006.01)
Patent
CA 2660924
The process of the present invention produces an aqueous dispersion of mineral materials, suitable for use in pigments and other coatings, by introducing a fully neutralized dispersing agent to an aqueous dispersion of coarse mineral materials, grinding the aqueous dispersion and, during grinding, adding a partially neutralized dispersing agent to the aqueous dispersion. The process of the present invention produces aqueous dispersions of very fine particles, having a solids content of at least 75% by weight, based on the total weight of the aqueous dispersion, and wherein 95% or more of the particles are below 2 microns.
Creamer Marianne
Krasnansky Robert
Manna Joseph
Santos Daniele Cristina
Gowling Lafleur Henderson Llp
Rohm And Haas Company
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