Disazo dyes

Details Disazo dyes Disazo dyes

C - Chemistry, Metallurgy

09

B

260/164.2

C09B 43/00 (2006.01) C09B 31/08 (2006.01) C09B 35/50 (2006.01) C09B 43/44 (2006.01) C09B 63/00 (2006.01) D21H 21/28 (2006.01)

Patent

CA 1062702

ABSTRACT OF THE DISCLOSURE Disazo dyes are prepared by the alkaline hydrolysis of a compound of the formula R1-A-R2 where R1 is Image , A is carbonyl or solfonyl and R2 is alkyl or aryl. The hydrolysis mass is preferably use as a liquid formulation without further treatment. A preferred dye has the formula Image The dyes have outstanding brightness and have utility in the dyeing of paper and fiberglass.

245847

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