Cationic fibers

Details Cationic fibers Cationic fibers

2005-02-01

2005-02-01

Chin, Peter (Department: 1731)

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

With chemical or physical modification of liberated fiber

C162S146000, C162S182000, C008S116100, C008S116400, C008S181000, C008S188000, C008S196000

Reexamination Certificate

active

06849156

ABSTRACT:
A cationic cellulosic fibre containing between 1 and 30 cationic groups and between 0.1 and 20 aldehyde groups per 100 anhydroglucose units is a suitable basis for producing paper and tissue products without the necessity of using non-biodegradable cationic polymers as wet strength additives. The cationic cellulosic fibre can be obtained by oxidation of the fibre to introduce aldehyde groups, followed by reaction of part of the aldehyde groups with a nitrogen-containing reagent such as betaine hydrazide hydrochloride. The fibre is advantageously combined with an anionic polymer such as monoaldehyde carboxyl-starch or with anionic cyclodextrin.

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