Reactive dyeing system and xylylene diphosphonic acid dyes

Details Reactive dyeing system and xylylene diphosphonic acid dyes Reactive dyeing system and xylylene diphosphonic acid dyes

C - Chemistry, Metallurgy

09

B

260/175.3

C09B 29/00 (2006.01) C07F 9/12 (2006.01) C07F 9/38 (2006.01) C09B 1/32 (2006.01) C09B 1/34 (2006.01) C09B 1/42 (2006.01) C09B 67/26 (2006.01) C09B 69/00 (2006.01) D06P 1/22 (2006.01) D06P 1/384 (2006.01) D06P 1/642 (2006.01) D06P 3/68 (2006.01) D21H 21/28 (2006.01)

Patent

CA 1111844

ABSTRACT OF THE DISCLOSURE Disclosed herein is a novel red dyestuff of the following formula: Image This dye is useful in reactive dyeing of cellulose fibers to give bright red dyeings exhibiting good lightfastness and color strength. Also disclosed are xylylene diphosphonic acid dyestuffs of the general formula: Image where Dye is a chromophore and dyestuffs of the general formula Image where R is hydrogen or lower alkyl, and Dye is a chromophore These dyestuffs are useful in reactive dyeing of textiles substrates having alcoholic hydroxyl, amino, or thiol groups, whereby phosphorus acid substituted chromophores are reactively linked to said textile substrate by means of a phosphorus ester link produced in the presence of a carbodiimide such as cyanamide, dicyandiamide or an alkyl substituted cyanamide or dicyandiamide.

356595

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