SUPPORTED POLYMERISATION CATALYSTS
Supported ionic metallocene catalyst systems may be prepared by a method comprising the following steps: i) mixing together in a suitable solvent : a ) an organometallic compound, and b) an ionic activator comprising a cation an d an anion; ii) addition of the mixture from step (i) to a support mate...
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| creator | TAYLOR, MICHAEL JOHN MEALARES, CHRISTEL MARIE-CLAUDE |
| description | Supported ionic metallocene catalyst systems may be prepared by a method comprising the following steps: i) mixing together in a suitable solvent : a ) an organometallic compound, and b) an ionic activator comprising a cation an d an anion; ii) addition of the mixture from step (i) to a support material; iii) addition of a metallocene complex in a suitable solvent; iv) further addition of an organometallic compound in a suitable solvent; and v) removal of the solvent. The preferred supported catalysts comprise a constrained geometry metallocene complex for example (t-butylamido) (tetramethyl-.fwdarw .5- cyclopentadienyl) dimethyl silanetitanium- .fwdarw.4-1.3-pentadiene and are particularly suitable for the polymerisation of ethylene or the copolymerisation of ethylene and .alpha.-olefins having from 3 to 10 carbons in the gas phase. The supported metallocene catalysts of the present inventi on show improved productivity compared to supported ionic metallocene catalyst systems of the prior art particularly when used in the gas phase. |
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The preferred supported catalysts comprise a constrained geometry metallocene complex for example (t-butylamido) (tetramethyl-.fwdarw .5- cyclopentadienyl) dimethyl silanetitanium- .fwdarw.4-1.3-pentadiene and are particularly suitable for the polymerisation of ethylene or the copolymerisation of ethylene and .alpha.-olefins having from 3 to 10 carbons in the gas phase. The supported metallocene catalysts of the present inventi on show improved productivity compared to supported ionic metallocene catalyst systems of the prior art particularly when used in the gas phase.</description><language>eng ; fre</language><subject>ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM ; CHEMISTRY ; COMPOSITIONS BASED THEREON ; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS ; METALLURGY ; ORGANIC CHEMISTRY ; ORGANIC MACROMOLECULAR COMPOUNDS ; THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><creationdate>2010</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100105&DB=EPODOC&CC=CA&NR=2416536C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20100105&DB=EPODOC&CC=CA&NR=2416536C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAYLOR, MICHAEL JOHN</creatorcontrib><creatorcontrib>MEALARES, CHRISTEL MARIE-CLAUDE</creatorcontrib><title>SUPPORTED POLYMERISATION CATALYSTS</title><description>Supported ionic metallocene catalyst systems may be prepared by a method comprising the following steps: i) mixing together in a suitable solvent : a ) an organometallic compound, and b) an ionic activator comprising a cation an d an anion; ii) addition of the mixture from step (i) to a support material; iii) addition of a metallocene complex in a suitable solvent; iv) further addition of an organometallic compound in a suitable solvent; and v) removal of the solvent. 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The preferred supported catalysts comprise a constrained geometry metallocene complex for example (t-butylamido) (tetramethyl-.fwdarw .5- cyclopentadienyl) dimethyl silanetitanium- .fwdarw.4-1.3-pentadiene and are particularly suitable for the polymerisation of ethylene or the copolymerisation of ethylene and .alpha.-olefins having from 3 to 10 carbons in the gas phase. The supported metallocene catalysts of the present inventi on show improved productivity compared to supported ionic metallocene catalyst systems of the prior art particularly when used in the gas phase.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP |
| title | SUPPORTED POLYMERISATION CATALYSTS |
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