dispersáo de polìmero finamente particulada, bem como processo para sua preparação e aplicação da mesma

This invention relates to aqueous polymer dispersions obtained by free radical emulsion copolymerization of ethylenically unsaturated monomers comprising(a) 30 to 60% by weight of at least one optionally substituted styrene,(b) 60 to 30% by weight of at least one C1-C4-alkyl (meth)acrylate, and(c) 0...

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Bibliographische Detailangaben
Hauptverfasser:	THOMAS ROICK, GUENTER SACKMANN, JOHAN KIJLSTRA, BERND HAUSCHEL, BERND THIELE, JOACHIM KOENING, GABRIELE KINKEL, ECKHARD WENZ
Format:	Patent
Sprache:	por
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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Beschreibung
Zusammenfassung:	This invention relates to aqueous polymer dispersions obtained by free radical emulsion copolymerization of ethylenically unsaturated monomers comprising(a) 30 to 60% by weight of at least one optionally substituted styrene,(b) 60 to 30% by weight of at least one C1-C4-alkyl (meth)acrylate, and(c) 0 to 10% by weight of other ethylenically unsaturated copolymerizable monomers,in the presence of(d) 10 to 40% by weight of degraded starch having a molecular weight Mn of 500 to 10,000, and(e) a graft-linking, water-soluble redox system as free radical initiator for the free radical emulsion copolymerization,wherein the sum (a)+(b)+(c)+(d) is 100%.