Process for the preparation of copper complex disazo compounds

Details Process for the preparation of copper complex disazo compounds Process for the preparation of copper complex disazo compounds

C - Chemistry, Metallurgy

09

B

260/161.8

C09B 45/28 (2006.01) C09B 62/515 (2006.01)

Patent

CA 1266046

ABSTRACT This invention is that of an improved process for preparing 1:1 copper complex disazo compounds which comprises treating a disazo compound of the following general forumula (2): Image (2) wherein: M is hydrogen or the equivalent monovalent or divalent metal and Y is the vinyl group or CH2-CH2-Z wherein Z is a radical that can be eliminated by an alkaline agent with a copper donor at a temperature from about 70° to about 130°C and at a pH from about 3 to about 6. The compounds of the process of the invention are used as dyestuffs.

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