METHODE POUR REDUIRE LA FORMATION DE PARTICULES NON FACONNABLES ET D'INCRUSTATIONS EN POLYMERISATION ET COPOLYMERISATION DE MONOMERES VINYLIQUES

A method for reducing the formation of unprocessable particles and incrustations in the polymerization of vinyl monomers, in particular vinyl chloride, in aqueous suspension, consists of polymerization in the presence of dialkylethers of general formula I, R -O-R2 (I> where R1 and R2 are identica...

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Bibliographische Detailangaben
1. Verfasser:	RUDOLF LUKAS, VLADIMIR PACOVSKY, MIROSLAV KOLINSKY, JAROSLAVA MICHALCOVA, VERA PALECKOVA, STANISLAV SEVCIK ET VERA TYRACKOVA
Format:	Patent
Sprache:	fre
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A method for reducing the formation of unprocessable particles and incrustations in the polymerization of vinyl monomers, in particular vinyl chloride, in aqueous suspension, consists of polymerization in the presence of dialkylethers of general formula I, R -O-R2 (I> where R1 and R2 are identical or different branched or straight-chain alkyls containing 1 to 4 carbon atoms, as individuals or their mixture, and/or cycloalkylethers of general formula II, where R means alkylene containing 4 to 6 carbon atoms, as individuals or their mixtures in an amount up to 20 weight % related to the weight of monomer. Diethyl ether, tert-butylmethyl ether and tetrahydrofuran are the preferred ethers.