Method and dispersants for production of high solids aqueous...

Details Method and dispersants for production of high solids aqueous... Method and dispersants for production of high solids aqueous...

C - Chemistry, Metallurgy

08

L

C08L 41/00 (2006.01) B01F 17/00 (2006.01) C08K 3/26 (2006.01) C09D 17/00 (2006.01)

Patent

CA 2086231

2086231 9200347 PCTABS00010 A method for producing a high solids aqueous slurry of particulate calcium carbonate having highly stable aging characteristics, comprising dispersing in water at at least 70 % by weight solids, a finely divided particulate calcium carbonate, utilizing as a dispersing agent from 20 to 34 lbs/ton of dry mineral (expressed as 40 % actives), of a copolymer of acrylic acid and a sulfonated vinyl monomer, which is converted to the salt form by from about 30 to 50 % of its carboxylic acid sites being neutralized with a polyvalent cation, and substantially the balance of said carboxylic sites being neutralized with a monovalent cation.

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