Colloid systems and wetting agents; subcombinations thereof; pro – Continuous liquid or supercritical phase: colloid systems;... – Aqueous continuous liquid phase and discontinuous phase...
Patent
1997-12-23
2000-10-31
Lovering, Richard D.
Colloid systems and wetting agents; subcombinations thereof; pro
Continuous liquid or supercritical phase: colloid systems;...
Aqueous continuous liquid phase and discontinuous phase...
516100, 106463, 106464, B01F 312, C09C 102
Patent
active
061403768
ABSTRACT:
A method of producing a dispersed aqueous suspension of an inorganic particulate material which includes the steps of (a) preparing an aqueous suspension of calcium carbonate particles having a particle size distribution such that at least 35% by weight have an esd less than 24 .mu.m, the solids concentration of the suspension being no more than 40% by dry weight; (b) concentrating the suspension by dewatering to increase the solids content to at least 60% by dry weight; and (c) adding a dispersing agent to the concentrated suspension to disperse the calcium carbonate particles and characterized in that the suspension produced by step (c) is pumpable and flowable, the dispersing agent comprising a water soluble copolymer of acrylic acid and maleic acid or a salt thereof having a molar ratio of acrylic acid units to maleic acid units of from 0.5:1 to 10:1 and a mass average molecular mass of from 1,000 to 100,000.
REFERENCES:
patent: 3989195 (1976-11-01), Falcon-Steward
patent: 4159312 (1979-06-01), Shibazaki et al.
patent: 4175066 (1979-11-01), Shibazaki et al.
patent: 4242318 (1980-12-01), Brahm et al.
patent: 4818783 (1989-04-01), Shioji et al.
patent: 5181662 (1993-01-01), Bousquet et al.
patent: 5292365 (1994-03-01), Delfosse
patent: 5531821 (1996-07-01), Wu
patent: 5533679 (1996-07-01), Golly
patent: 5584923 (1996-12-01), Wu
Derwent Abstract 85-077232/13 and JP600028818A Lion, Derwent week 8513.
Golley Christopher Robin Langdon
Mogridge David James
Skuse David Robert
Thrale Deborah Susan
Imerys Minerals Ltd.
Lovering Richard D.
Metzmaier Daniel S.
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