Clarification of aqueous waste streams containing dispersed dyes

Details Clarification of aqueous waste streams containing dispersed dyes Clarification of aqueous waste streams containing dispersed dyes

1973-10-26

1976-03-30

Levy, Donald

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

210 30R, D06P 500

Patent

active

039472485

ABSTRACT:
Polyester textile yarns and fabrics are normally dyed with organic pigments dispersed in water. The waste streams from this process contain residual amounts of color bodies which are removed by the instant process which comprises adding a sufficient amount of a water-soluble cationic polymer (e.g. polyethylenimine) to flocculate the color bodies.

REFERENCES:
patent: 3829380 (1974-08-01), Oohara

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