Process for the treatment of polymer compositions
AssigneeBasell Polyolefine GmbH
InventorsMaurizio Galimberti, Angelo Ferraro, Giovanni Baruzzi, Ofelia Fusco
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Abstract
A process for the preparation of heterophasic elastomeric polymer comprising the step of polymerizing ethylene, an alpha-olefin CH2═CHL, where L is an alkyl, cycloalkyl or aryl radical with 1–10 carbon atoms and a non-conjugated diene in the presence of a catalyst system comprising a transition metal catalyst component supported on a porous alpha-olefin polymer, characterized in that at least part of the diene is impregnated on the porous alpha-olefin polymer.
Claims19
A process for the preparation of elastomeric polymer compositions comprising polymerizing ethylene, an alpha-olefin CH2═CHL, where L is an alkyl, cycloalkyl or aryl radical with 1–10 carbon atoms and a non-conjugated diene in the presence of a catalyst system comprising a transition metal catalyst component supported on a porous alpha-olefin polymer, wherein at least part of the diene is impregnated on the porous alpha-olefin polymer.
A solid catalyst system comprising:
- a porous alpha-olefin polymer impregnated with a non conjugated diene;
- a transition metal catalyst component;
- and
- a cocatalyst.
A process for preparing a thermoplastic elastomeric composition comprising contacting a product obtained by a process comprising polymerizing ethylene, an alpha-olefin CH2═CHL, where L is an alkyl, cycloalkyl or aryl radical with 1–10 carbon atoms and a non-conjugated diene in the presence of a catalyst system comprising a transition metal catalyst component supported on a porous alpha-olefin polymer, wherein at least part of the diene is impregnated on the porous alpha-olefin polymer with crosslinking agents and, optionally coadjuvants of the crosslinking agents, at temperatures of between 140 and 240° C.
Dependencies are inferred from the claim text.