Patent number: 4256507
Abstract: Formulations of flavanthrone, pyranthrone, indanthrone, indigo, quinacridone, perylene-3,4,9,10-tetracarboxylic acid dianhydride and perylene-3,4,9,10-tetracarboxylic acid diimide pigments which contain, as additives, one or more compounds of the formula ##STR1## where X is an n-valent radical of a flavanthrone, pyranthrone, indigo, quinacridone, perylene-3,4,9,10-tetracarboxylic acid dianhydride or perylene-3,4,9,10-tetracarboxylic acid diimide pigment, R.sup.1, R.sup.3 and R.sup.4 are hydrogen or chlorine, R.sup.2 is hydrogen, chlorine, carboxyl, bromine, nitro, N-C.sub.1 -C.sub.5 -alkylcarbamyl, N-phenylcarbamyl or benzoylamino and n is 1, 2, 3 or 4.In solutions of surface-coating binders or of surface coatings, the above formulations give very deep colorations, coupled with high gloss and high transparency of the resulting films.
Type:
Grant
Filed:
January 29, 1980
Date of Patent:
March 17, 1981
Assignee:
BASF Aktiengesellschaft
Inventors:
Joachim Kranz, Rudolf Polster, Reinhard Sappok, Alois Wiesenberger