Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1986-10-09
1988-08-23
Clingman, A. Lionel
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106413, 106493, 106496, 106499, 106500, 106504, 106505, C04B 1400
Patent
active
047658410
ABSTRACT:
An organic pigment dispersion in a non-aqueous medium is prepared directly from an aqueous slurry containing 0.1-20% by weight of the pigment by mixing the aqueous slurry with the non-aqueous medium under vigorous agitation and subsequently isolating the organic pigment dispersion from the residual aqueous phase.
A substantial part of water in the resulting pigment dispersion can be removed by passing the organic pigment dispersion in the non-aqueous medium over a series of surfaces, the surface material thereof having different affinity for water and the non-aqueous medium, respectively, and then removing water and pigment dispersion in the non-aqueous medium, respectively, from respective surfaces.
REFERENCES:
patent: 2822283 (1958-02-01), Blaser et al.
patent: 3728143 (1973-04-01), Pollard
patent: 3980488 (1976-09-01), Barrington et al.
patent: 4300954 (1981-11-01), de Monterey et al.
patent: 4309320 (1982-01-01), Arora et al.
patent: 4340341 (1982-07-01), Arora et al.
patent: 4340431 (1982-07-01), Arora et al.
Chemical Abstract No. 107, 192a, JP 50-157 418, vol. 84, 1976.
Larsen Bjorn E. H.
Madsen Bjorn
Madsen Elun S.
Olsen Steffen C.
Vinther Arne
Clingman A. Lionel
Kemisk Vaerk Koge A/S
Thompson Willie J.
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