Disazo pigments having improved heat resistance using lower alky

Details Disazo pigments having improved heat resistance using lower alky Disazo pigments having improved heat resistance using lower alky

1987-02-09

1988-10-25

Higel, Floyd D.

Organic compounds -- part of the class 532-570 series

Organic compounds

Azo

106 23, 106496, 534753, 534739, 534740, 534741, 534742, 534746, 534887, 534582, 8509, 8521, C09B 3508, C09B 4100, C09D 1108

Patent

active

047805331

ABSTRACT:
A disazo pigment is prepared by coupling the tetrazo compound of 3,3'-dichlorobenzidine with an acetoacetanilide compound which is other than those represented by the below-described general formula (I) and is free of water-soluble groups. In the present invention, about 0.5-50 mole % of the acetoacetanilide compound is replaced by a compound represented by the following general formula (I): ##STR1## wherein R means a methyl, ethyl, propyl or butyl group or a substituted or unsubstituted phenyl group.

REFERENCES:
patent: 4341701 (1982-07-01), Pechby et al.
patent: 4648907 (1987-03-01), Hays et ala.

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