C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
8/47
C09B 67/42 (2006.01) C09B 67/00 (2006.01) G01N 15/06 (2006.01)
Patent
CA 1235256
ABSTRACT OF THE DISCLOSURE A generally permanently non-dusting pigment and dye preparation containing the following dedusting agents: (a) 0.5 - 10% of a surface-active agent and (b) 2 to 25% of a substance (depending on the fineness, morphology and later use of the pigment and dye preparation) which, after being mixed with the dry mixture of pigment and surface-active substance with repeated application of intensive shear stress, brings the mixture to the smear point, the remainder of the preparation consisting of the pigment or the dye. The preparation is obtained by adding to the filter sludge of the pigment or of the dye a suitable surface-active substance, or mixtures thereof, depending on the type of pigment or dye and also on the respective application: then, following homogeneous distribution, the combination of pigment and surface-active substance, possibly after it has been isolated as a pressed cake, is dried and to the dried product is then added a liquid, flowable agent, or an agent which is liquid at a high temperature of 50°C or more, which brings the mixture to the smear point when it is subjected to intensive shear stress; then mixing is carried out while using intensive shear stress and the product is then granulated, if desired, in a known manner.
469019
Adrian Gerhard
Gawol Manfred
Gowling Lafleur Henderson Llp
Heubach (dr. Hans) G.m.b.h. & Co. Kg
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