Nalco Chemical Company

Bhupati R Bhattacharyya

Michael Robert St John

Edward G Ballweber

Robert L Wetegrove

Shu-Jen W Huang

Manuel Slovinsky

Chandrashekar S Shetty

John W Sparapany

William J Roe

Ralph W Kaesler

Philip D Dalsin

Nang T Bui

Sanjay R Srivatsa

Yvonne O Dunn

Michael L Dwyer

Paul F Richardson

Raymond J Wachala

Michael L McCullar

Lawrence E Beske

Uma Bhattacharyya

Oversprayed paint in a paint spray operation is detackified by dosing the water of the waste water system of such operation with a composition comprising a polymer and aluminum sulfate. The polymer contains at least about 10 mole percent of cationic mer units of monoethylenically unsaturated monomer.

Method for detackifying oversprayed paint

Water-in-oil emulsion polymers of cationic acrylamides to which are added small quantities of chain transfer agents. These polymers are useful as flocculants in sludge dewatering processes.

Cationic polymers for sludge dewatering

An emulsion polymer having activity as a demulsifier for a w/o emulsion, particularly water-in-crude oil, having the general formula ##STR1##

Water soluble polymer as water-in-oil demulsifier

Hydrophobic cationic terpolymers of monomers of (a) acrylamide and/or methacrylamide, (b) dimethylaminoethylmethacrylate methyl chloride and/or dimethylaminoethylmethacrylate methyl sulfate, and (c) vinyl acetate; water-in-oil and oil-in-water emulsions containing said terpolymers; and dewatering of wastes and sludges utilizing said oil-in-water emulsions in which the terpolymers are present essentially in the aqueous phase.

Hydrophobic cationic terpolymers from acrylamide, unsaturated quaternary

Hydrophobic cationic terpolymers resulting from the polymerization of a mixture of monomers of (a) acrylamide and/or methacrylamide, (b) dimethylaminoethylacrylate methyl chloride and/or dimethylaminoethylacrylate methyl sulfate, and (c) vinyl acetate; water-in-oil and oil-in-water emulsions containing said terpolymers; and dewatering of wastes and sludges utilizing said oil-in-water emulsions in which the terpolymers are present essentially in the aqueous phase.

Hydrophobic cationic terpolymers from acrylamide,

Personal care compositions are provided which have as a thickening agent a lightly cross-linked cationic vinyl addition polymer. Such compositions include water, at least one cosmetically-active agent, and such thickening agent, preferably one derived from the polymerization of a cationic vinyl addition monomer, acrylamide, and a small amount of a difunctional vinyl addition monomer for cross-linking purposes. Alternatively, the cross-linking functionality can be provided by the incorporation of an anionic vinyl addition monomer into the polymer.

Cross-linked cationic polymers for use in personal care products

A water-in-oil emulsion, the aqueous phase of which contains Amidase. An improved method of treating water-in-oil emulsions of acrylamide polymers with Amidase to reduce the acrylamide content thereof which comprises adding the Amidase in the form of a water-in-oil emulsion.

Water-in-oil emulsions of amidase

A method of removing impurities from water which comprises treating these impurity-containing waters with a few parts per million of a water-soluble polymer containing a major portion of Diallyldimethyl Ammonium Chloride and ether.

Ampholytic diallyldimethyl ammonium chloride (DADMAC) copolymers and

High molecular weight DADMAC polymers are produced by polymerizing an inverse latex of DADMAC with 0.5 to 3 weight percent acrylamide. The polymerization uses a low HLB emulsifier and a free radical initiator.

High molecular weight DADMAC polymers by inverse emulsion technology

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.

Acrylamide diallyl dimethyl ammonium chloride copolymers as improved

Novel polymeric compositions useful as thickeners and rheology modifiers for oil-in-water emulsion systems are disclosed. The water-soluble or swellable compositions described contain, prior to polymerization, from:

Terpolymer composition

Non-aqueous dispersion polymers are formed using certain polymer oil-soluble oxygen containing solvents having at least two labile hydrogen atoms and at least one tertiary carbon atom. Non-aqueous dispersion polymers prepared in this manner do not require the use of block or graft copolymer stabilizers.

Non-aqueous dispersion polymerization of vinyl monomers

Dust is controlled on roads, in mines, on mineral and tailings piles, surfaces of pulverized coal and mineral piles contained within open transit cars such as coal cars or trucks, and other surfaces containing coal particles, rock dust, clay, soil particles and other finely divided particles subject to dusting by applying thereto a dust inhibiting amount of a liquid dispersion of watery consistency of highly branched water swellable polymer of acrylamide or an acrylamide-acrylic acid copolymer, branched and/or cross-linked with a multifunctional unsaturated monomer containing more than one ethylenically unsaturated group, said cross-linked polyer or copolymer having a three-dimensional structure and being in the form of microgelatinous particles having a particle size not exceeding approximately one micron in an oil containing emulsion form, and having the properties of swelling dramatically in water and binding dust particles upon adsorption from solution.

Growing community of inventors

Downers Grove, IL, United States of America

Bhupati R Bhattacharyya