Vat dyestuff process for their manufacture and use

Details Vat dyestuff process for their manufacture and use Vat dyestuff process for their manufacture and use

C - Chemistry, Metallurgy

09

B

260/236.12

C09B 5/24 (2006.01) C07D 251/48 (2006.01) C09B 1/467 (2006.01) C09B 1/48 (2006.01) C09B 3/00 (2006.01) C09B 5/02 (2006.01)

Patent

CA 1039280

1. Vat dyestuffs of the formula Image wherein R1 and R2 each represent a hydrogen atom or a low molecular alkyl radical and A1 and A2 represent a different or similar vattable radical with 3 to 6 condensed rings, are suitable for dyeing and printing the most varied materials, in particular for dyeing and printing fibres made from natural or regenerated cellulose in the presence of a reducing agent.

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