Bleed resistant colored cellulosics and the method of their prep

Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product

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Details

8561, 8562, 8649, 8919, C09B 6200

Patent

active

043989152

ABSTRACT:
There is disclosed a method for bleed-resistant coloring of cellulosic materials. The method comprises cross-linking to the cellulosic a water-insoluble colorant particle which is the cross-linkable reaction product of an organic polymer such as starch with a reactive dye compound. Representative of reactive dye compounds are Procion red, blue and yellow. Advantageous cross-linkers are urea-formaldehyde and melamine-formaldehyde resins. The cellulose materials colored by the method of the invention are new and are characterized-in-part in that they are bleed resistant.

REFERENCES:
patent: 3304297 (1967-02-01), Westmann et al.
patent: 3337288 (1967-08-01), Horisuchi et al.
patent: 3597322 (1971-08-01), Babson
patent: 4167422 (1979-09-01), Bellanca et al.
patent: 4297099 (1981-10-01), Simon et al.

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