Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1982-03-11
1984-10-09
Higel, Floyd D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
106288Q, 106308Q, 106309, 260208, C09B 2932, C09B 2933, C09D 300, C09D 1102
Patent
active
044760523
ABSTRACT:
Process for the aftertreatment of the azo pigment of the formula ##STR1## C.I. PIGMENT ORANGE 36 wherein the crude pigment obtained after coupling is heated to temperatures from 100.degree. to 150.degree. C. in dry or wet condition in a solvent which is water-immiscible or not indefinitely water-miscible and the pigment is isolated in known manner. The pigment aftertreated in this way shows substantially improved hiding power while the same pigment prepared in the usual way has poor hiding power and can not be used in stoving lacquers.
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patent: 4003886 (1977-01-01), Muller
Carr, "Pigment Handbook", vol. III, Characterization and Physical Relationships, p. 29, (1973).
Hunger Klaus
Ribka Joachim
Rieper Wolfgang
Weingarten Friedrich
Farbwerke Hoechst Aktiengesellschaft
Higel Floyd D.
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