Phosphite stabilization of polyolefins containing silica supported catalyst

A polyolefin composition is provided containing residual silica supported catalyst and a phosphite and a polyamine. The polyamine is present in the composition to reduce the hydrolysis of the phosphite of polymer exposure of the composition to humidity for extended periods of time. Polyamine is pres...

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Bibliographische Detailangaben
Hauptverfasser:	GARDNER, PAMELA, MAHOOD, JAMES ALAN, ENLOW, WILLIAM PALMER
Format:	Patent
Sprache:	eng ; fre ; 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 polyolefin composition is provided containing residual silica supported catalyst and a phosphite and a polyamine. The polyamine is present in the composition to reduce the hydrolysis of the phosphite of polymer exposure of the composition to humidity for extended periods of time. Polyamine is present at a high level sufficient to provide the phosphite with the desired level of resistance to hydrolysis. Polyolefin compositions are useful for making molded articles.