Two-phase printing process for preparing conversion articles and

Details Two-phase printing process for preparing conversion articles and Two-phase printing process for preparing conversion articles and

1980-07-01

1982-02-09

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

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

Discharge utilized

8449, 8463, 8465, 8592, 8640, 8642, 8918, D06P 515

Patent

active

043148123

ABSTRACT:
According to two-phase processes multi-color effects are obtained on cellulosic materials, namely conversion effects with reactive and vat dyestuffs on the one hand and discharge resist prints with reactive dyestuffs and, optionally, vat dyestuffs on the other hand, by printing or padding the reactive dyestuff or a mixture of reactive and vat dyestuffs in a weakly acidic medium onto the material, overprinting this material with a neutral paste containing a stable discharging agent of the sulfinic acid series and, if desired, a vat dyestuff, drying the print, contacting the material with an aqueous strongly alkaline liquor, steaming it and finishing the article in known manner, depending on the choice of dyestuffs.

REFERENCES:
patent: 1957491 (1934-05-01), Dreyfus et al.
patent: 3700402 (1972-10-01), Noda et al.
patent: 3972677 (1976-08-01), Feess et al.

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