Quinoxaline-monoazo-acetarylide pigment

Details Quinoxaline-monoazo-acetarylide pigment Quinoxaline-monoazo-acetarylide pigment

C - Chemistry, Metallurgy

09

B

C09B 29/33 (2006.01) C08K 5/3465 (2006.01) C09B 29/52 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2244393

Compounds of the formula (I) ( See formula I) in which R1 and R2 are identical or different and are Cl, COO(C1-C4)-alkyl, CONH2, CONCH3, CON(CH3)2 or SO2NRR', where R and R' are identical or different and are hydrogen, C1-C4-alkyl or phenyl, it being possible for phenyl to be substituted by methyl, ethyl, methoxy, ethoxy or halogen, R3 is hydrogen, methyl, methoxy, ethoxy, chloro or bromo, and R4 is hydrogen, C1-C3 alkyl, chloro or bromo, are useful yellow pigments with high light fastness and weather fastness properties.

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