Preparation of highly branched, liquid polymers of ethylene and/or α-olefins in the presence of aluminum-based catalyst systems
OwnerAyusman Sen, Louis M. Wojcinski, II +1inventors
InventorsAyusman Sen, Louis M. Wojcinski, II, Shahid Murtuza
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Abstract
Ethylene and/or propylene are polymerized to form highly branched, liquid polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which comprises (1) an alkyl aluminum component, (2) an aluminum or gallium trihalide component, and, optionally, (3) a Group 4 metallocene dihalide component.
Claims19
A process for synthesizing branched, liquid polymers of ethylene and α-olefins, which comprises:
- contacting at least one monomer selected from the group consisting of ethylene and α-olefins, under polymerization reaction conditions and in the presence of an inert reaction medium, with a catalyst system consisting essentially of (1) an alkyl aluminum component and (2) an aluminum trihalide component;
- and
- maintaining contact between said catalyst system and said at least one monomer for a period sufficient to produce a branched, liquid polymer therefrom.
A process for synthesizing highly branched, liquid polymer from ethylene, propylene, or mixtures thereof, comprising:
- contacting a monomer selected from the group consisting of ethylene, propylene, and mixtures of ethylene and propylene, in the presence of an inert polar reaction medium and under polymerization reaction conditions, with a catalyst system consisting essentially of an alkyl aluminum component and an aluminum or gallium trihalide;
- and
- maintaining said contact for a period of time sufficient to form said branched, liquid polymer.
Dependencies are inferred from the claim text.