Diazopigments containing pyridine derivatives

Details Diazopigments containing pyridine derivatives Diazopigments containing pyridine derivatives

1975-09-12

1978-03-14

Warren, Charles F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260140, 260155, 260208, 2602948B, 2602955T, 260296H, 106288Q, C09B 3312, C09B 4312

Patent

active

040790525

ABSTRACT:
Diazopigments of the formula ##STR1## wherein A denotes a direct bond or an aliphatic, cycloaliphatic, aromatic or heterocyclic radical, B denotes an aromatic radical, R.sub.1 denotes a H atom, an alkyl group which contains 1-4 C atoms and which is optionally substituted by a phenyl radical, or an aryl radical, R.sub.2 denotes a H atom, an alkyl group containing 1-4 C atoms, a cyano or carbamoyl group, an alkoxycarbonyl or alkylcarbamoyl group containing 2-6 C atoms, or a phenyl, benzoyl or phenylcarbamoyl group which is optionally substituted in the phenyl radical by halogen atoms or alkyl or alkoxy groups containing 1-4 C atoms, R.sub.3 denotes a H atom, an alkyl group containing 1-4 C atoms, a cycloalkyl group containing 5-6 C atoms, a cyano, hydroxyl or carbamoyl group, an alkoxycarbonyl or alkylcarbamoyl group containing 2-6 C atoms, or a phenyl or phenylcarbamoyl group which is optionally substituted by halogen atoms or alkyl or alkoxy groups containing 1-4 C atoms, and Z denotes an O atom or a N atom, and the N atom, conjointly with the radical R.sub.1, forms a benzimidazole ring, which are useful for pigmenting high-molecular organic material.

REFERENCES:
patent: 3759894 (1973-09-01), Angliker et al.

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