Water insoluble disazo dyestuffs for polyester

Abstract

Abstract WATER-INSOLUBLE DISAZO DYESTUFFS OF THE FORMULA ((4-C'',2-A,6-B-PHENYL)-N=N-(3-D1,5-C-1,4-PHENYLENE)-N(-R2) -R4'')(X-1)-Z-(4-D2,5-(R1-N(-R2)-)-1,2-PHENYLENE)-N=N- (2-A,6-B-1,4-PHENYLENE)-C''-((3-(R4-N(-R2)-),4-D2-1,2- PHENYLENE)-N=N-(2-A,6-B-1,4-PHENYLENE)-C'')(Z-X) IN WHICH, GENERALLY, R1, R2, R3 AND R4 ARE EACH HYDROGEN, ALKYL OR SUBSTITUTED ALKYL, R''4 IS ALKYLENE, X IS 1 OR 2, EACH A INDEPENDENTLY IS HYDROGEN, HALOGEN, LOWER ALKYL, LOWER ALKOXY, NITRO, CYANO, CARBO-LOWER ALKOXY OR LOWER ALKYLSULPHONYL, EACH B INDEPENDENTLY IS HYDROGEN, HALOGEN, LOWER ALKYL, CYANO OR TRIFLUOROMETHYL, EACH C'' INDEPENDENTLY IS NITRO, CYANO, CARBO-LOWER ALKOXY OR LOWER ALKYLSULPHONYL, AND Z IS A BRIDGING GROUP. THESE DYESTUFFS ARE USEFUL IN DYEING SYNTHETIC FIBERS ESPECIALLY POLYESTER FIBERS TO GIVE DYEINGS WHICH POSSES EXCELLENT FASTNESS PROPERTIES WITH ESPECIALLY GOOD FASTNESS TO LIGHT, SUBLIMATION, DECATIZING, WASHING AND CHLORINATED WATER. DYEINGS ON SECONDARY ACETATE RAYON ALSO GIVE GOOL FASTNESS TO GAS FADING. THESE DYESTUFFS ALSO RESERVE WOOL AND COTTON WELL.

Inventors

• 👤 H Angliker
• 👤 R Peter

Bibliographic Details