Monoazo dyes

C - Chemistry – Metallurgy – 09 – B

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C09B 29/16 (2006.01) C09B 29/01 (2006.01) C09B 29/30 (2006.01) C09B 62/53 (2006.01) D06P 1/06 (2006.01) D06P 1/39 (2006.01)

Patent

CA 1072085

ABSTRACT OF THE DISCLOSURE Water-soluble monoazo dyes for nylon having the formula: Image wherein ring A may optionally be substituted by halogen, trifluoromethyl, alkoxy, acylamino or alkyl having from 1 to .4 carbon atoms, R represents hydrogen or unbranched alkyl having from 1 to 4 carbon atoms, R1 represents hydrogen, alkyl or hydroxyalkyl, X represents unbranched alkyl having from 1 to 6 carbon atoms, cycloalkyl, halogen, nitro, trifluoromethyl, sulpho, vinylsulphonyl, hydroxyethylsulphonyl, sulphatoethylsulphonyl, -SO2NHR2, wherein R2 represents hydrogen or alkyl having from 1 to 4 carbon atoms, or -COOR3 wherein R3 represents hydrogen, alkyl having from 1 to 7 carbon atoms, cycloalkyl or aryl, and n represents an integer of from 0 to 3.

272719

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