Discharge printing of textiles dyed with indigo blue

Details Discharge printing of textiles dyed with indigo blue Discharge printing of textiles dyed with indigo blue

1980-03-26

1981-01-27

Schofer, Joseph L.

Bleaching and dyeing; fluid treatment and chemical modification

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

Vat dye or sulfur dye, e.g., quinonic or indigoid reducible...

8589, 8590, D06P 515

Patent

active

042472954

ABSTRACT:
The discharge printing past contains the sodium or calcium salt of a sulfonated derivative of an N-alkylated benzylphenyl ammonium halide which acts as a sequestering and solubilizing agent for the indigo blue. It is used in conjunction with a reducing agent (or an oxidizing agent) and a bleaching agent or process resistant dye, depending on whether the print is to be white or colored. After developing in the presence of a second removing agent and a strong dispersing agent, the textile stock is washed, dried, subjected to conventional finishing treatments and again dried.

REFERENCES:
patent: 2004476 (1931-10-01), Barz et al.
patent: 2164930 (1937-11-01), Lubs
patent: 2205887 (1938-06-01), Kern
patent: 2420336 (1947-05-01), Orchard
patent: 2759975 (1956-08-01), Chiddix et al.
patent: 2874022 (1959-02-01), Raff et al.
patent: 3097045 (1963-07-01), Bartl et al.
patent: 3591325 (1971-07-01), Sapers
Chem. Abstract 83:180972p 1975.

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