Method of treating and dyeing animal fibers

Details Method of treating and dyeing animal fibers Method of treating and dyeing animal fibers

1994-07-25

1996-02-13

Lieberman, Paul

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

8478, 8481, 8585, 8602, 8 941R, 8930, D06P 300, D06P 500

Patent

active

054908655

ABSTRACT:
The present invention is a process for producing two-tone or multi-color effects on animal fibers and the products derived from these fibers. Pretreatment of the fibers to increase the affinity of the fiber relative to metallic salts or dyes for is accomplished by treatment with an ethanolamine solution containing varying amounts of mono-, di-, or triethanolamine. A mordant treatment with a metallic salt exposes the pretreated fibers to an aqueous solution of organic acids and a metallic salt mordant having affinity for the pretreated fiber. The two-tone or multi-colored effect is achieved by combining the treated fibers with untreated fiber and dyeing the fibers in a dyestuff having affinity for the treated fiber. The dyeing process may also include placing treated and untreated fibers in a dye bath containing dye stuffs that have affinity to treated fibers and dyestuffs that have an affinity to untreated fibers.

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