Verfahren zur Verbesserung der Stabilität von Polyolefinen

The stability of a polyolefin is improved by dispersing the purified polyolefin powder in an inert hydrocarbon, admixing therewith a boron halide or boron halide etherate and an organic peroxide, heating, separating and then washing with the inert hydrocarbon. In examples, heptane and hexane are use...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MAEGERLEIN,HELMUT,DR, MEYER,GERHARD,DR, SIGGEL,ERHARD,DR, SCHOEPF,ALBERT,DR
Format:	Patent
Sprache:	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 USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Beschreibung
Zusammenfassung:	The stability of a polyolefin is improved by dispersing the purified polyolefin powder in an inert hydrocarbon, admixing therewith a boron halide or boron halide etherate and an organic peroxide, heating, separating and then washing with the inert hydrocarbon. In examples, heptane and hexane are used as media, dibenzoyl-, diacetyl-, dicumyl- and di-t-butylare the peroxides used, and the boron compound is BF3, BCl3, BF3.O(C2H5)2 or BCl3.O(C2H5)2. The treated products are tested for stability in compositions containing dilauryl thiodipropionate and 4,41-thio-bis-(3-Me-6-t-Bu-phenol).