POLYMERIC DISPERSIONS FROM VINYLAROMATIC AND ACRYLIC MONOMERS PRODUCED IN THE PRESENCE OF SEEDLATEX AND CARBOHYDRATES

POLYMERIC DISPERSIONS FROM VINYLAROMATIC AND ACRYLIC MONOMERS PRODUCED IN THE PRESENCE OF SEEDLATEX AND CARBOHYDRATES

Aqueous polymer dispersions and processes for preparing them are described. The polymer dispersions can be obtained by free-radically initiated emulsion polymerization of from 19.9 to 80 parts by weight of vinylaromatic compounds, from 19.9 to 80 parts by weight of acrylate monomers selected from am...

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Bibliographische Detailangaben
Hauptverfasser: SEYFFER, Hermann, LAWRENZ, Dirk, SCHMIDT-THÜMMES, Jürgen, MOREL, Aurelie, EVSTATIEVA, Elitsa
Format: Patent
Sprache:eng ; fin ; swe
Schlagworte:
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
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Zusammenfassung:Aqueous polymer dispersions and processes for preparing them are described. The polymer dispersions can be obtained by free-radically initiated emulsion polymerization of from 19.9 to 80 parts by weight of vinylaromatic compounds, from 19.9 to 80 parts by weight of acrylate monomers selected from among C1-C10-alkyl acrylates and C1-C10-alkyl methacrylates, from 0.1 to 10 parts by weight of ethylenically unsaturated acids and from 0 to 20 parts by weight of other ethylenically unsaturated monomers, wherein the emulsion polymerization is carried out in an aqueous medium in the presence of free-radical-forming initiators, seed latex and at least one carbohydrate compound in the form of a degraded starch. The polymer dispersions are particularly suitable for producing paper coating compositions.