Absorbent fibers and process for their preparation

Details Absorbent fibers and process for their preparation Absorbent fibers and process for their preparation

1974-09-09

1976-05-04

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

128156, 128284, 128296, 264184, 264205, 264340, 428364, 81155, 526 54, 526 55, 526272, C08F 844, A61L 1500

Patent

active

039547213

ABSTRACT:
Water-insoluble, water-swellable fibers adapted to bind aqueous fluids such as body exudates are prepared by spinning fibers from an organic solvent solution of a copolymer of maleic anhydride with suitable vinyl aromatic monomers. The copolymer solution also contains a small amount of a polyfunctional cross-linking agent such as an adduct of glycerine with ethylene oxide and propylene oxide which reacts to cross-link and plasticize the copolymer chains when the fibers are heated and dried. The cross-linked copolymer fibers are then rendered hydrophilic and water-swellable by reaction with ammonia.

REFERENCES:
patent: 2733272 (1956-01-01), Horsley et al.
patent: 2933460 (1960-04-01), Richter et al.
patent: 2988539 (1961-06-01), Cohen et al.
patent: 3085986 (1963-04-01), Muskat
patent: 3245933 (1966-04-01), Muskat
patent: 3398092 (1968-08-01), Fields
patent: 3642726 (1972-02-01), Heilman
patent: 3810468 (1974-05-01), Harper et al.

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