Thermally tunable phosphinimine catalysts

A new phosphinimine polymerization catalyst exhibits restricted rotation about a carbon-phosphorous bond. The restricted rotation is demonstrated using variable temperature 1H NMR. Ethylene copolymers made using the catalysts have microstructures which are dependent on the temperature at which polym...

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Bibliographic Details
Main Author Morrison, Darryl J
Format Patent
LanguageEnglish
Published 25.02.2020
Subjects
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PERFORMING OPERATIONS
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
THEIR PREPARATION OR CHEMICAL WORKING-UP
THEIR RELEVANT APPARATUS
TRANSPORTING
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Summary:A new phosphinimine polymerization catalyst exhibits restricted rotation about a carbon-phosphorous bond. The restricted rotation is demonstrated using variable temperature 1H NMR. Ethylene copolymers made using the catalysts have microstructures which are dependent on the temperature at which polymerization takes place.
Bibliography:Application Number: US201716342328