METHOD FOR CONTROLLING SIZE DISTRIBUTION OF POLYMER PARTICLES DURING PREPARATION OF AQUEOUS POLYMER DISPERSION, AQUEOUS POLYMER DISPERSION AND ITS USE

The present disclosure relates to a method for controlling size distribution of formed polymer particles during preparation of aqueous polymer dispersion. The method comprises obtaining an aqueous polysaccharide solution, which comprises about 10 to 40 weight-% polysaccharide containing a free hydro...

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Hauptverfasser: HEISKA PERTTU, BRUUN NINA, PEURANEN HELENA, HUHTALA KIMMO
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Sprache:eng ; pol
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creator HEISKA PERTTU
BRUUN NINA
PEURANEN HELENA
HUHTALA KIMMO
description The present disclosure relates to a method for controlling size distribution of formed polymer particles during preparation of aqueous polymer dispersion. The method comprises obtaining an aqueous polysaccharide solution, which comprises about 10 to 40 weight-% polysaccharide containing a free hydroxyl group, such as starch, and polymerising in the polysaccharide solution in the presence of a graft-linking, water-soluble redox system about 30 to 60 weight-% of at least one optionally substituted styrene, about 60 to 30 weight-% of at least one C1-C4-alkyl(meth)acrylate, and 0 to about 10 weight-% of other ethylenically unsaturated copolymerizable monomers. The size distribution of the formed polymer particles is controlled by adjusting viscosity of the polysaccharide solution before the polymerisation to a level less than about 20 mPas.
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subjects CHEMISTRY
COMPOSITIONS BASED THEREON
IMPREGNATING OR COATING OF PAPER
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PAPER NOT OTHERWISE PROVIDED FOR
PAPER-MAKING
PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D
PRODUCTION OF CELLULOSE
PULP COMPOSITIONS
TEXTILES
THEIR PREPARATION OR CHEMICAL WORKING-UP
TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
title METHOD FOR CONTROLLING SIZE DISTRIBUTION OF POLYMER PARTICLES DURING PREPARATION OF AQUEOUS POLYMER DISPERSION, AQUEOUS POLYMER DISPERSION AND ITS USE
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