Compositions: coating or plastic – Materials or ingredients – Pigment – filler – or aggregate compositions – e.g. – stone,...
Patent
1990-09-14
1992-10-27
Dixon, Jr., William R.
Compositions: coating or plastic
Materials or ingredients
Pigment, filler, or aggregate compositions, e.g., stone,...
106 1412, 106 1413, 106 1414, 106 1421, 423629, 423305, 423503, 423DIG8, C09K 1502, C01B 2536, C01B 2532
Patent
active
051586100
ABSTRACT:
The present invention provides anticorrosive pigments on the basis of tertiary alkaline-earth aluminum phosphates, particularly those where the numerical atomic ratio x:y:z of formula AE.sub.x Al.sub.y (PO.sub.4).sub.z of alkaline earth to aluminum to phosphorus or phosphate is 50-70% to 5-30% to 20-50%. It also provides a process for their production in which an alkaline-earth compound and aluminum compound sufficiently soluble with phosphoric acid are reacted with phosphoric acid, the precipitated pigment is filtered off as usual and dried, optionally calcined and optionally ground.
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Dixon Jr. William R.
Dr. Hans Heubach GmbH & Co. KG
Hertzog Scott L.
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