Styrene-butadiene block copolymer polystyrene mixt. releasing little styrene monomer

A mixt. (I) of (A) 1-99 wt.% mixt. of 90-99.9 wt.% styrene-butadiene block copolymer (SBS) and 0.1-10 wt.% volatile phenolic stabiliser and (B) 1-99 wt.% polystyrene (PS) or mixt. of 90-99.9 wt.% PS and 0.1-10 wt.% hardly volatile phenolic stabiliser is claimed. Also claimed is a method of producing...

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Hauptverfasser:	NIESNER, NORBERT., 67159 FRIEDELSHEIM, DE, BENDER, DIETMAR., 67459 BOEHL-IGGELHEIM, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	A mixt. (I) of (A) 1-99 wt.% mixt. of 90-99.9 wt.% styrene-butadiene block copolymer (SBS) and 0.1-10 wt.% volatile phenolic stabiliser and (B) 1-99 wt.% polystyrene (PS) or mixt. of 90-99.9 wt.% PS and 0.1-10 wt.% hardly volatile phenolic stabiliser is claimed. Also claimed is a method of producing a mixt. of PS and SBS stabilised against the liberation of styrene monomer by preparing mixt. (I). Pref. the volatile stabiliser is 2,6-di-tert.-butyl-4-methylphenol (II).