NEUTRALIZATION OF DEACTIVATED POLYMERIZATION CATALYST USING PHOSPHORIC- OR PHOSPHONIC ACID SALTS

A process for deactivating an active catalyst species in an olefin polyme r stream exiting a polymerization reactor and neutralizing catalyst residues , as well as reducing corrosion, plugging or fouling of olefin production an d recovery equipment and imparting antioxidative properties to an olefin...

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Bibliographic Details
Main Author VANSPEYBROECK, RONY S. L
Format Patent
LanguageEnglish
French
Published 27.12.2007
Subjects
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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Summary:A process for deactivating an active catalyst species in an olefin polyme r stream exiting a polymerization reactor and neutralizing catalyst residues , as well as reducing corrosion, plugging or fouling of olefin production an d recovery equipment and imparting antioxidative properties to an olefin pol ymer comprising adding a catalyst deactivator and an alkaline earth metal sa lt of a phosphoric- or phosphonic acid to an olefin polymer stream exiting a polymerization reactor, each in a quantity at least sufficient to deactivat e active catalytic species in the polymer stream and neutralize catalyst res idues, respectively, and subsequently recovering the resulting polymer produ ct.
Bibliography:Application Number: CA20072656927