Method for production of high solid aqueous calcium carbonate su

Details Method for production of high solid aqueous calcium carbonate su Method for production of high solid aqueous calcium carbonate su

1992-07-31

1994-05-31

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

106465, 526240, C08K 326

Patent

active

053170539

ABSTRACT:
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.

REFERENCES:
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patent: 4775420 (1988-11-01), Gonnet et al.
patent: 4840985 (1989-06-01), Gonnet et al.
patent: 4868228 (1989-09-01), Gonnet et al.
patent: 4892902 (1990-01-01), Shioji

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