C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
6/48, 6/67, 400/
C09B 31/02 (2006.01) C09B 33/02 (2006.01) C09B 35/02 (2006.01) C09B 35/031 (2006.01) C09B 35/34 (2006.01)
Patent
CA 1045120
NEW DISAZO PIGMENTS AND A PROCESS FOR THEIR MANUFACTURE Abstract of the Disclosure Disazo pigments of the formula Image wherein R1 denotes a H atoms, an alkyl group which contains 1-4 C atoms and is optionally substituted by a phenyl radi- cal, or an aryl radical, R2 denotes a H atom, an alkyl group containing 1-4 C atoms, a cyano or carbamoyl group, or an alkanoylamino group containing 2-4 C atoms, R3 denotes an alkyl group containing 1-4 C atoms, an alkoxycarbonyl group containing 2-6 C atoms, or a phenyl group which is optionally substituted by halogen atoms or alkyl or alkoxy group containing 1-4 C atoms, Z denotes an O atom or a N atom, the N atom forming, conjointly with the radical R1, a benzimidazole ring, X and Y denote H or halogen atoms or methyl or nitro groups, and V denotes an O atom or a -CO- group are useful for coloring plastics in fast yellow to red shades.
231891
Muller Willy
Roueche Armand
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