Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1996-07-31
1997-11-18
Marcheschi, Michael
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106442, 106439, 106416, 106486, 106487, 501148, 1621811, 1621818, 524447, C09C 136, C09C 142
Patent
active
056883153
ABSTRACT:
Described is a process for separating a mixture of finely divided minerals into constituents thereof. In particular, the invention relates to a procedure for effecting such separation by a novel selective flocculation technique wherein a dispersed aqueous pulp containing the mixture of minerals is preconditioned for selective flocculation with an anionic polymer by addition of both a fatty acid such as oleic acid and source of polyvalent cation such as calcium chloride. The fatty acid and cation of the salt selectively coat the component of the mixture that is subsequently flocculated with the anionic polymer. A polyacrylate salt dispersant is preferably used in the process. The invention is especially adapted to the separation of colored titaniferous impurities from kaolin clay in which case both a white purified kaolin product and a strongly flocculated dun-colored titania/kaolin mixture are recovered and then dispersed producing a material useful as a paper coating pigment.
REFERENCES:
patent: 3670883 (1972-06-01), Weir
patent: 3701417 (1972-10-01), Mercade
patent: 3826365 (1974-07-01), Mercade
patent: 3837482 (1974-09-01), Sheridon, III
patent: 3857781 (1974-12-01), Maynard
patent: 3862027 (1975-01-01), Mercade
patent: 4014709 (1977-03-01), Dykstra et al.
patent: 4334985 (1982-06-01), Turner, Jr.
patent: 5047375 (1991-09-01), Dunaway et al.
patent: 5154767 (1992-10-01), Kunkle et al.
patent: 5190615 (1993-03-01), Kunkle et al.
Behl Sanjay
Willis Mitchell J.
Young Raymond H.
Engelhard Corporation
Marcheschi Michael
Moselle I. L.
Shatynski T. J.
LandOfFree
Colored titaniferous coating pigment obtained as a flocculated b does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Colored titaniferous coating pigment obtained as a flocculated b, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Colored titaniferous coating pigment obtained as a flocculated b will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1562448