Imperial Chemical Industries Limited

Allen Crabtree

Peter W Austin

Alan T Costello

David William Plant

William J Marshall

A process for the coloration of a hydroxy substituted organic polymeric substrate by heating it to at least 93.degree. C. with a water-soluble dyestuff containing one or more groups of the formula: ##STR1## WHERE M is a metal N IS 0 OR 1

Dyeing process and compositions for use therein

Reactive azine dyestuffs of the formula: ##STR1## wherein Am is selected from a group consisting of anilino, di(lower alkyl)amino and N(lower alkyl)benzylamino radicals, one of Y.sup.1 and Y.sup.2 is H or SO.sub.3 H and the other is H or an alkyl or alkoxy group of 1-4 carbon atoms, one of X.sup.1 or X.sup.2 is H, SO.sub.3 H, -SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH=CH.sub.2 and the other is H, an alkyl or alkoxy group of 1-4 carbon atoms, Cl or CO.sub.2 H, X.sup.3 is H, an alkyl group of 1-4 carbon atoms or SO.sub.3 H, when the dotted fused ring is present B is absent and when the dotted fused ring is absent B is H or an alkyl or alkoxy group of 1-4 carbon atoms, At least one of the pendant benzene nuclei contains a NHQ group where Q is a cellulose-reactive group except when X.sup.1 or X.sup.2 is --SO.sub.2 CH.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH=CH.sub.2 and the dyestuff as a whole contains at least 2 sulphonic acid groups. The products are reactive dyes for cellulose which are colored in strong bright blue or reddish-blue shades of excellent fastness to washing and of a reasonable fastness to light, especially in respect of wet fading.

Reactive dyestuffs

Reactive azine dyestuffs of the formula: ##SPC1## Wherein Am is selected from a group consisting of anilino, di(lower alkyl)amino, di(hydroxyethyl)amino, di(cyanoethyl)amino and N(lower alkyl)benzylamino radicals; one of Y.sup.1 and Y.sup.2 is H or SO.sub.3 H and the other is H or an alkyl or alkoxy group of 1-4 carbon atoms; one of X.sup.1 or X.sup.2 is H, SO.sub.3 H, and the other is H an alkyl or alkoxy group of 1-4 carbon atoms, Cl or CO.sub.2 H; X.sup.3 is H, an alkyl group of 1-4 carbon atoms or SO.sub.3 H, when the dotted fused ring is present B is absent and when the dotted fused ring is absent B is H or an alkyl or alkoxy group of 1-4 carbon atoms; at least one of the pendant benzene nuclei contains a NHQ group where Q is a cellulose-reactive group of the diazine series and the dyestuff as a whole contains at least 2 sulphonic acid groups. The products are reactive dyes for cellulose which are colored in strong bright blue or reddish-blue shades of excellent fastness to washing and of a reasonable fastness to light, especially in respect of wet fading.

Diazine dyestuffs

Dyestuffs of the formula: ##SPC1## In which

Reactive triazinyl dyestuffs

Reactive azine dyestuffs of the formula: ##SPC1## Wherein Am is selected from a group consisting of anilino, di(lower alkyl)amino and N(lower alkyl)benzylamino radicals, one of Y.sup.1 and Y.sup.2 is H or SO.sub.3 H and the other is H or an alkyl or alkoxy group of 1-4 carbon atoms, One of X.sup.1 or X.sup.2 is H, SO.sub.3 H, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH=CH.sub.2 and the other is H, an alkyl or alkoxy group of 1-4 carbon atoms, Cl or CO.sub.2 H, X.sup.3 is H, an alkyl group of 1-4 carbon atoms or SO.sub.3 H, when the dotted fused ring is present B is absent and when the dotted fused ring is absent B is H or an alkyl or alkoxy group of 1-4 carbon atoms, At least one of the pendant benzene nuclei contains a NHQ group where Q is a cellulose-reactive group except when X.sup.1 or X.sup.2 is --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH=CH.sub.2 and the dyestuff as a whole contains at least 2 sulphonic acid groups. The products are reactive dyes for cellulose which are colored in strong bright blue or reddish-blue shades of excellent fastness to washing and of a reasonable fastness to light, especially in respect of wet fading.

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Manchester, United Kingdom

Allen Crabtree