METALLOCENE CATALYST BASED ON A TRANSITION METAL OF GROUPS 4 OR 5 OF THE PERIODIC TABLE IMMOBILISED ON A SUPPORT MODIFIED WITH SOLUBLE HYDRID SILICA, METHOD FOR PRODUCING AND USING SAME

METALLOCENE CATALYST BASED ON A TRANSITION METAL OF GROUPS 4 OR 5 OF THE PERIODIC TABLE IMMOBILISED ON A SUPPORT MODIFIED WITH SOLUBLE HYDRID SILICA, METHOD FOR PRODUCING AND USING SAME

The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described...

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Hauptverfasser: GOLLMANN, MARIA ANGÉLICA, CARDOSO, MIRANDA, MÁRCIA, SILVA, LACERDA, BRAMBILLA, RODRIGO, MOREIRA, ANA CRISTINA, FONTES, ROCHA, ETIENNE, MARCOS, DE ALMEIDA
Format: Patent
Sprache:eng ; fre ; 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
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Beschreibung
Zusammenfassung:The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described a process for preparing said catalyst. The supported metallocene catalyst of the present invention has the advantages of high catalytic activity, morphology, besides the fact of producing copolymers of ethylene with alpha-olefins having molecular behavior that will bring benefits in mechanical properties, such as resistance to tearing, piercing and impact, as well as improved optical and weldability properties.