Process for the continuous production in solution of styrene thermoplastic resins

Process for the continuous production in solution of styrene thermoplastic resins by polymerization of a vinyl-aromatic monomer and a vinyl-nitrile monomer in the presence of an elastomer and of a starter, wherein polymerization is conducted in two or more steps, wherein the elastomeric component is...

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Bibliographische Detailangaben
Hauptverfasser:	MATARRESE, SAVINO, ROSSI, GRAZIA ANNA, LO CONSOLO, MAURO, CIGNA, GIUSEPPE, BORGHI, ITALO
Format:	Patent
Sprache:	eng ; fre ; ger
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:	Process for the continuous production in solution of styrene thermoplastic resins by polymerization of a vinyl-aromatic monomer and a vinyl-nitrile monomer in the presence of an elastomer and of a starter, wherein polymerization is conducted in two or more steps, wherein the elastomeric component is fed, in solution in the solvent and/or in the monomers, to the first step, polymerization is carried out in the subsequent steps at temperatures ranging from 70 DEG to 150 DEG C, in each step the reaction mass is gently and homogeneously stirred and the reaction product is caused to flow to a thin film evaporator heated at 150 DEG -300 DEG C.