Branched diene-modified crystalline polypropylene terpolymers
AssigneeExxonMobil Chemical Patents Inc.
InventorPalanisamy Arjunan
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Abstract
Certain specific embodiments of the invention will now be discussed. For example, a process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer is described, which process includes: contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer, a first diene monomer, and a second diene monomer; and conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a branched crystalline diene-modified polypropylene random terpolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 30 J/g or more
Claims61
A process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer, comprising:
- contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer, a first diene monomer, and a second diene monomer, in which the first diene monomer and the second diene monomer are different non-conjugated dienes, each having 5 or more carbon atoms;
- and
- conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a branched crystalline diene-modified polypropylene random terpolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 30 J/g or more.
A process of preparing a polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer, comprising:
- contacting a metallocene catalyst compound with a polymerization medium that includes at least a propylene monomer, an α, internal non-conjugated diene monomer, and a α, ω non-conjugated diene monomer;
- and
- conducting polymerization of the monomers in the presence of the metallocene catalyst compound for a time sufficient to provide a branched crystalline diene-modified polypropylene random terpolymer that includes monomeric units derived from each of the monomers, and having from 0.0 wt % to 2.0 wt % ethylene and a heat of fusion of 30 J/g or more.
A polymer composition that includes a branched crystalline diene-modified polypropylene random terpolymer having propylene units;
- first diene units;
- second diene units;
- from 0.0 wt % to 2.0 wt % ethylene units;
- and a heat of fusion of 30 J/g or more, wherein the first diene units and the second diene units are derived from different non-conjugated diene monomers, each having 5 or more carbon atoms.
Dependencies are inferred from the claim text.