Process for dyeing and printing synthetic, hydrophobic fibre mat

Details Process for dyeing and printing synthetic, hydrophobic fibre mat Process for dyeing and printing synthetic, hydrophobic fibre mat

1982-06-10

1983-09-27

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Process of printing permanently on substrate, other than...

Discharge utilized

8466, 8532, 8533, 8691, 8694, 8922, 260158, C09B 4312, D06P 515

Patent

active

044066619

ABSTRACT:
Azo dyestuffs free from groups imparting solubility in water are used in the process for the production of white or variously colored designs on a colored substrate on textile materials containing hydrophobic, synthetic fibers by impregnating the materials with dye liquors containing dyeing auxiliaries and padding auxiliaries as well as dyestuffs which are dischargeable to white, drying or incipiently drying the impregnated materials, printing the materials with an alkaline discharge reserve paste which contains a discharging agent, and subsequently subjecting the materials to a heat treatment at temperatures from 100.degree. to 230.degree. C., wherein said discharging agent is a base which produces a pH value of at least 8 in a 5% strength aqueous solution and the dyestuffs which are dischargeable to white are of the formula

REFERENCES:
patent: 4252530 (1981-02-01), Ribka et al.
patent: 4265629 (1981-05-01), Ribka et al.

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