Fiber with improved complexation qualities and...

Details Fiber with improved complexation qualities and... Fiber with improved complexation qualities and...

2006-05-23

2006-05-23

Gray, Jill (Department: 1774)

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

C008S115600, C008S116100

Reexamination Certificate

active

07048769

ABSTRACT:
The present invention concerns a process for treating a fiber or a fiber-based material such as a yarn, a woven, knitted or nonwoven textile material, paper, or leather, to improve its adsorption properties, wherein the following successive operations are carried out on said fiber or said material:a) applying a solid mixture of cyclodextrin(s) and/or cyclodextrin derivative(s) and/or inclusion complex(es) of cyclodextrin and/or cyclodextrin derivatives, at least one poly(carboxylic) acid and/or at least one poly(carboxylic) acid anhydride and optionally a catalyst;b) heating to a temperature in the range 150° C. to 220° C.;c) washing with water; andd) drying.The present invention also concerns fibers or fiber-based materials with improved cation exchange properties and improved hydrophilic characteristics.

REFERENCES:
patent: 5728823 (1998-03-01), Reuscher et al.
patent: 2003/0035748 (2003-02-01), Trinh et al.

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