Process for preparing swellable cross-linked carboxyalkylcellulo

Details Process for preparing swellable cross-linked carboxyalkylcellulo Process for preparing swellable cross-linked carboxyalkylcellulo

1979-05-29

1981-02-03

Clingman, A. Lionel

Bleaching and dyeing; fluid treatment and chemical modification

Chemical modification of textiles or fibers or products thereof

Cellulose fibers

8120, 8181, 8194, 536 84, 536 87, 536 88, 536 98, C08G 5900, C08B 1700

Patent

active

042485959

ABSTRACT:
This invention relates to a process for preparing swellable cross-linked carboxyalkylcelluloses in the form of fibers, by reacting cellulose, a carboxyalkylating etherifying agent, and a cross-linking agent in an aqueous alkaline medium, comprising effecting alkalizing, etherifying, and cross-linking simultaneously in one reaction step using fibers of cellulose hydrate or fiber-based textile sheet materials which contain these fibers, by contacting said fibers or textile sheet materials which contain these fibers with an ample quantity of an aqueous alkaline reaction mixture, removing part of the reaction mixture from the fibers or the textile sheet materials contacted therewith, so that at least the quantity required for reaction is still present, and treating the fibers or the textile sheet materials containing the remainder of the aqueous alkaline reaction mixture with heat energy.

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