Process for making fibrillated cellulose acetate staple fibers

Details Process for making fibrillated cellulose acetate staple fibers Process for making fibrillated cellulose acetate staple fibers

1995-01-19

1998-07-14

Diamond, Alan

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...

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

Patent

active

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.

REFERENCES:
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patent: 3595605 (1971-07-01), Kimmig
patent: 4040856 (1977-08-01), Litzinger
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patent: 5234720 (1993-08-01), Neal et al.
patent: 5505888 (1996-04-01), Mitchell et al.
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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