(2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl napht

Details (2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl napht (2,5-diisopropoxycarbonylbenzene-azo-2-hydroxy-3-carbamoyl napht

1984-10-17

1988-01-12

Higel, Floyd D.

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

Organic compounds

Azo

534575, 534887, 106288Q, 106308Q, 106 23, C09B 33048, C09B 35033, C09B 3530, C09B 31075

Patent

active

047192933

ABSTRACT:
The invention relates to disazo pigments of the formula ##STR1## wherein R is an ethyl, propyl or isopropyl radical. These pigments colour plastics, especially rigid PVC, in brown shades of excellent fastness properties.

REFERENCES:
patent: 3562249 (1971-02-01), Schnabel et al.

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