Hercules Corporation

Solenis Technologies Cayman, L.p.

Erin A S Doherty

Qu-Ming Gu

Huai Nan Cheng

William S Carey

Robert Alan Gelman

Lloyd A Lobo

Fushan Zhang

Jennifer L Rittenhouse-Pruss

Huai N Cheng

John Todd Sarraf

Robert Gelman

Jennifer Rittenhouse-Pruss

Robert A Gelman

The invention relates to a stable aqueous slurry composition comprising clay or clay-like material, hydrophobically associative polymer, and optionally a surfactant; and a method of inhibiting the deposition of organic contaminants in pulp and papermaking applications.

Clay slurries and use thereof in pulp and papermaking applications

Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.

Hydrophobically modified poly(aminoamides)

Methods for inhibiting the depositions of organic contaminants from pulp in pulp and papermaking systems are disclosed. Hydrophobically modified poly[ethylene glycol] are added to the pulp or applied to deposition-prone surfaces of a papermaking system.

Hydrophobically modifed poly[ethylene glycol] for use in pitch and stickies control in pulp and papermaking processes

A method of improving retention and drainage in a papermaking process is disclosed. The method provides for the addition of an associative polymer, prepared by an inverse emulsion polymerization process that utilizes multiple, discrete additions of initiator. Additionally, a process for preparation of an associative polymer, prepared by an inverse emulsion polymerization process that utilizes multiple discrete additions of initiator is disclosed.

Retention and drainage in the manufacture of paper

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Hockessin, DE, United States of America

Erin A S Doherty