Nalco Chemical Company

Paul F Richardson

Dodd W Fong

Lawrence J Connelly

Bhupati R Bhattacharyya

Ralph W Kaesler

John A Romberger

Suzanne N Dunn

An aqueous slurry of comprising a plurality of synthetic fibers and from 0.1-10 percent by weight based on the weight of the fibers of a water-soluble acrylamide polymer dispersant containg at least 5 percent by weight of 2-acrylamido-2-methylpropanesulfonic acid units, said polymer having an RSV of at least 10.

Acrylamide-2-acrylamido-2-methylpropanesulfonic acid polymers as

A process of flocculating suspended solids which comprises treating such suspension with an effective amount of a flocculant comprising a water-soluble terpolymer which contains sulfonate groups and has an RSV of at least 15.

Sulphonate-containing terpolymers as flocculants for suspended solids

An improved method of dewatering mineral slurries which comprises treating said slurries with a dewatering amount of a copolymer of acrylamide and DADMAC, which polymers are characterized as containing from 3-50 mole percent of acrylamide and having a Reduced Specific Viscosity of at least 2.

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Glen Ellyn, IL, United States of America

Paul F Richardson