Process for making fibrillated cellulose acetate staple fibers

Bleaching and dyeing; fluid treatment and chemical modification – Chemical modification of textiles or fibers or products thereof – Treating textiles or fibers from synthetic resin or natural...

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8125, 8129, 162146, 162 9, 1621576, 162182, 162100, 264143, 264200, 264208, 2642907, 26421112, 428373, 428365, 428375, D06M 1100

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057797366

ABSTRACT:
The present invention discloses a process for producing a fibrillated cellulose acetate fiber comprising contacting cellulose acetate fiber with a strong base solution at conditions sufficient to remove greater than about 5% of bulk acetyl groups from said cellulose acetate fiber. Modified cellulose acetate staple fiber comprising an outer layer of regenerated cellulose in which at least about 5% of the acetyl groups are removed on an overall fiber basis are also disclosed. Paper products incorporating said fibers are also disclosed.

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patent: 5573640 (1996-11-01), Frederick et al.
Y. Fahmy and S. El-Kalyoubi, "on Fibrous Acetylation of Cellulose. Acetylation of Paper Pulps", Cellulose Chemistry and Technology, 4, 1970, pp. 613-619 (Month Unknown).
Synthetic Fibers in Papermaking, D. G. Bannerman, O. A. Battista, Interscience, New York 1964, pp. 69-70, 89, 273-277 (Month Unknown).
Chemical Abstract No. 1216915, Modification of Paper Properties by the Chemical Modification of Pulp, Kapustova, Justina; Letenay, Alexej (Vysk. Ustav Papieru Celul., Bratislava, Czech.), (1970) (Month Unknown).

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