Compositions: coating or plastic – Materials or ingredients – Miscellaneous
Patent
1980-01-03
1982-01-05
Lieberman, Allan
Compositions: coating or plastic
Materials or ingredients
Miscellaneous
260 342, 106285, C09C 310, C09D 1700
Patent
active
043092233
ABSTRACT:
This invention relates to a method for producing a pigment-organic vehicle product which comprises forcing an aqueous pulp of the pigment through a conduit and injecting the vehicle into the conduit and aqueous pulp. The mixture is then homogenized, subjected to further mixing and transferred to a traveling horizontal perforated surface whereby some of the water drains from the mixture through the perforations. The aqueous pulp, organic vehicle mixture is then forced through a cylindrical chamber having defined therein an axial opening of a diameter smaller than that of the chamber, and at least one second opening spaced from the axial opening. The mixture is forced through the chamber and axial opening by a rotating helical surface whereby the product is extruded through the axial opening and water is squeezed from the mixture. The water then exits from the chamber through the second opening.
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patent: 2907670 (1959-10-01), Katz et al.
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Mead, "The Encyclopedia of Chemical Process Equipment", pp. 925 & 926.
Jillson Ronald L.
Rouwhorst Dale L.
BASF Wyandotte Corporation
Lieberman Allan
Swick Bernhard R.
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