Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1998-12-16
2000-05-16
Green, Anthony J
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106410, 106413, 106414, 106419, 106429, 106432, 106433, 106448, 106450, 106451, 106452, 106453, 106455, 106460, 106471, 106476, 106479, 106480, 106491, 106493, 106494, 106495, 106496, 106497, 106498, 106499, 524104, C09C 308, C09B 6702, C09B 6700
Patent
active
060631821
ABSTRACT:
A stir-in pigment composition for coloring high-molecular-weight material, particularly coatings and ink systems, comprises 85 to 99.5 parts by weight of a pigment and 0.5 to 15 parts by weight of an additive comprising a vinylpyrrolidone polymer or copolymer. The stir-in pigment composition is in the form of microgranules and is obtainable by spray drying a high solids content aqueous pigment dispersion containing the pigment and the additive. The new pigment composition powders are easily handled, easily wetted and disperse rapidly to form homogeneous aqueous pigment dispersions which are practically free of larger pigment aggregates and can readily be incorporated into aqueous ink and paint systems as stir-in pigments without a dispersion step in a bead mill.
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Patent Abstracts of Japan, abstract No. JP363191864A, abstract of Japanese Patent Specification No. 03-191864, Aug. 1988.
Ciba Speciality Chemicals Corporation
Crichton David R.
Green Anthony J
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