Vinyl alkoxysilane copolymer polyelectrolytes for pitch deposit control
AssigneeNalco Chemical Company
InventorsChandrashekar S. Shetty, Manian Ramesh
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Abstract
A method for controlling pitch in papermaking systems which comprises the step of adding a hydrophobic polyelectrolyte copolymer coagulant to pulp and paper process water. The hydrophobic polyelectrolyte copolymer coagulant preferably comprises a first monomer selected from the group of hydrophilic monomers and hydrophobic monomers, and a vinyl siloxane monomer.
Claims5
A surface active water-soluble polyelectrolyte polymer made by free radical polymerization of 0.01 to 10 mole percent of a vinyl alkoxysilane monomer, and from 90 to 99.99 mole percent of a monomer selected from the group consisting of dimethylaminoethyl(propyl)acrylate methyl chloride quaternary, diallyldimethyl ammonium chloride, dimethylaminoethylacrytate benzyl chloride quaternary, 3-methylacrylamide propyl trimethyl ammonium chloride, and combinations thereof.
Dependencies are inferred from the claim text.