Method for producing anionic polymers and use as resistance agents in a paper-making method

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United States of America

PATENT NO 12043676
SERIAL NO

17043030

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Abstract

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The invention relates to a method for producing anionic polymers that are hydrosoluble in an aqueous solution, comprising at least the following successive steps: b) polymerisation, in an aqueous solution, of anionic monomers containing at least 5 mol % of 2-acrylamido-2-methylpropane sulfonic acid and/or one of the salts thereof and optionally non-ionic monomers up to a mass concentration of polymer A of between 5 and 40%, b) addition of at least one aldehyde into the solution produced in step a), and c) acidification to a pH of between 3 and 4 of the solution produced in step b). The invention also relates to the use thereof in a paper-making method.

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Patent Owner(s)

  • S.P.C.M. SA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Barriere, Cyril Andrezieux, FR 9 13
Hund, René Andrezieux, FR 16 47
Olivier, Rémi Andrezieux, FR 2 0

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