C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/162.4
C09B 33/12 (2006.01) C09B 35/031 (2006.01) C09B 35/30 (2006.01) C09B 43/145 (2006.01)
Patent
CA 1058165
DISAZOPIGMENTS Abstract of the Disclosure Disazopigments of the formula Image wherein A denotes a direct bond or an aliphatic, cycloali- phatic, aromatic or heterocyclic radical, B deno'es an aromatic radical, R1 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, R2 denotes a H atom, an alkyl group containing 1-4 C atoms, a cyano or carbamoyl group, an alkoxycarbo-nyl 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, R3 denotes a H atom9 an alkyl group containing 1-4 C atoms, a cycloalkyl group containing 5-6 C atoms, a cyano, hydroxyl or carbamoyl group, an alkoxycarbonyl o. alxyl- carbamoyl 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 R1, forms a benzimidazole ring, which are useful for pigmenting high molecular organic material.
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