Azo pigments

Details Azo pigments Azo pigments

C - Chemistry, Metallurgy

09

B

260/171, 260/162

C09B 7/00 (2006.01) C09B 29/01 (2006.01) C09B 29/15 (2006.01) C09B 29/20 (2006.01) C09B 29/33 (2006.01) C09B 29/50 (2006.01) C09B 33/02 (2006.01)

Patent

CA 1100491

ABSTRACT OF THE DISCLOSURE Azo pigments having the formula Image (I) Image (II) wherein X represents hydrogen or halogen atom; n represents an integer of 1 to 4; R1 represents a substituted or unsubstituted aromatic group; R2 represents a moiety of a coupling component which has one coupling site and R3 represents a moiety of a coupling component which has two coupling sites. The azo pigments can be produced by coupling a coupling component with a diazonium compound of an aromatic amine having the formula Image (III) wherein X, n and R1 are defined above.

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