Eva polymers for use as beater saturants

Details Eva polymers for use as beater saturants Eva polymers for use as beater saturants

D - Textiles, Paper

21

H

9/58

D21H 17/37 (2006.01) D04H 1/64 (2006.01) D21H 17/34 (2006.01) D21H 17/42 (2006.01)

Patent

CA 2038868

A beater saturation process for forming a nonwoven wet laid composite is provided which comprises the following steps: (I) providing an aqueous dispersion comprising: (a) 10 to 95% by weight of a water-dispersible, but water-insoluble fiber; (b) 0 to 80% by weight of a finely divided, substantially water-insoluble, non-fibrous, inorganic filler; (c) 5 to 50% by weight of an anionically charged emulsion polymer comprising 70 to 90% by weight of a vinyl ester of an alkanoic acid; 10 to 30% by weight ethylene, 0 to 70% by weight of a C2-C8 alkyl acrylate, and 0 to 4% by weight of an anionic functional monomer, (II) colloidally destabilizing the resulting mixture to form a fibrous agglomerate in aqueous suspension; (III) distributing and draining the aqueous suspension on a porous substrate such as a wire to form a wet web, and (IV) drying the web.

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