ORGANOLEPTICALLY IMPROVED, LOW FILM-BLOCKING STYRENE BUTADIENE BLOCK COPOLYMERS

The invention proposes a linear vinylaromatic diene block copolymer (A) and polymer compositions comprising such SBC for the production of films having organoleptically improved, low film-blocking properties. Block copolymer (A) has sharp block transitions and a molecular weight Mn of at least 140,0...

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Bibliographische Detailangaben
Hauptverfasser:	NIESSNER, Norbert, VERSWYVEL, Michiel
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	The invention proposes a linear vinylaromatic diene block copolymer (A) and polymer compositions comprising such SBC for the production of films having organoleptically improved, low film-blocking properties. Block copolymer (A) has sharp block transitions and a molecular weight Mn of at least 140,000 g/mol, wherein the proportion of a soft phase built from diene is from 15 to 35 vol.-%, and which soft phase-embedded in a vinylaromatic hard phase-has a cylindrical morphology.