Cationic oxazine dyes

Details Cationic oxazine dyes Cationic oxazine dyes

C - Chemistry, Metallurgy

09

B

8/26, 260/244.9

C09B 57/00 (2006.01) C09B 19/00 (2006.01) D06P 1/384 (2006.01)

Patent

CA 1132551

Abstract There are described new blue cationic oxazine dyes of the formula Image in which R1, R2, R3 and R4 independently of one another are each C1-4-alkyl, with R1 and R2 together with the nitrogen atom also being able to form a heterocyclic ring, and X ? is anion; these dyes are distinguished in particular by an excellent migration capacity on polyacrylonitrile fibres.

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