Betz Laboratories, Inc.

Betz Paperchem, Inc.

David D Dreisbach

Gilbert S Gomes

Mark E Laurint

Tien-Feng Ling

Michael A Schuster

Jacqueline K Pease

Davor F Zidovec

Alexander D Fisher

Iris D Barton

A method of inhibiting the deposition of organic contaminants in a pulp and papermaking system comprising adding to the system an effective amount of a detackifying composition comprising a charged polymer and an oppositely charged surfactant, with the proviso that at least the polymer or the surfactant be surface active.

Method for inhibiting the deposition of organic contaminants in polp and

Disclosed are concentrated high flash point surfactant compositions comprising an alcohol ethosulfate free of low flash solvents, a primary alcohol ethoxylate and glacial acetic acid in a weight ratio of 5 to 80% alcohol ethosulfate, 80 to 20% alcohol ethoxylate and 2 to 20% acetic acid. Preferably, a fourth component consisting of a nonionic surfactant such as caster oil ethoxylate is employed in the composition.

Concentrated high flash point surfactant compositions

Method for inhibiting the deposition of organic contaminants in pulp and

Methods for inhibiting deposition of organic contaminants from pulp in pulp and papermaking systems which comprises treating the pulp and papermaking system with an effective amount of a polyalkylene oxide/vinyl acetate graft copolymer.

Methods for controlling the deposition of organic contaminants in pulp

The present invention provides for methods of inhibiting the formation and deposition of barium sulfate on the surfaces of papermaking systems. The inventive treatments comprise adding an effective amount of a poly(amine) compound to the papermaking systems. Representative polymers include polyallylamine, polytrimethylallylammonium chloride and polyvinylamine.

Methods for inhibiting barium sulfate deposition using a

The invention is a process for controlling pitch deposition from pulp in papermaking systems, by an effective amount of a polymer having methyl ether groups pendant to the backbone of the polymer to the pulp term 'polymer'. A preferred embodiment of the invention is controlling pitch deposition by adding an effective amount of a water soluble cellulose ether.

Process for controlling pitch deposition from pulp in papermaking systems

The invention relates to a process for controlling pitch deposition from pulp in papermaking systems which comprises adding to the pulp an effective amount of a polymer having hydroxyl groups pendant to the backbone of the polymer. The polymer can be polyvinyl alcohol having 50% to 100% hydrolysis. The polymer can also be a water-soluble copolymer having recurring units of nonionic hydrophilic monomers, and/or hydrophobic monomers, wherein the copolymer has at least 20 mol percent of vinyl alcohol. In another aspect, this invention comprises adding to the pulp an effective amount of a water-soluble polymer derived by substituting hydroxyl groups onto a preformed reactive polymer, wherein the water-soluble polymer has at least 20 mol percent of hydroxyl groups.

A process for controlling pitch deposition from pulp in papermaking systems which comprises adding to the pulp an effective amount of a polymer containing polymerized units of methyl vinyl ether.

The invention relates to a process for controlling pitch deposition from pulp in papermaking systems which comprises adding to the pulp an effective amount of a water-soluble quaternized polyamine ionene polymer.

Pitch control process utilizing quaternized polyamine ionene polymer

The invention relates to a process for controlling pitch deposition from pulp in papermaking systems which comprises adding to the pulp an effective amount of a polymer having methyl ether groups pendant to the backbone of the polymer.

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Jacksonville, FL, United States of America

David D Dreisbach