Processes for producing high propylene content PEDM using tetrahydroindacenyl catalyst systems
AssigneeExxonMobil Chemical Patents Inc.
InventorsJo Ann M. Canich, John R. Hagadorn, Rhutesh Shah, Florin Barsan, Sarah J. Mattler
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Abstract
The present disclosure provides methods for producing an olefin polymer by contacting a C3-C40 olefin, ethylene and a diene with a catalyst system including an activator and a metallocene catalyst compound comprising a substituted or unsubstituted indacenyl group and obtaining a C3-C40 olefin-ethylene-diene terpolymer typically comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C3-C40 olefin, and, optionally, from 0.1 to 10 mol % diene. Preferably, a propylene-ethylene-ethylidene norbornene is obtained.
Claims11
A C3-C40 olefin-ethylene-diene terpolymer comprising from 1 to 35 mol % of ethylene, from 98.9 to 65 mol % C3-C40 olefin, and from 0.1 to 10 mol % diene, wherein the terpolymer has:
- 1) a C3+ olefin tacticity index ratio [m/r] of greater than 0.4 and less than 1.2;
- 2) a crystallinity of from 0% to 3%;
- 3) a melt flow rate at 230° C. from 0.5 g/10 min to 100 g/10 min;
- 4) a glass transition temperature of from −2° C. to −25° C.;
- 5) an Mw/Mn of from 1.5 to 3;
- 6) a number average molecular weight value of from 40,000 g/mol to 250,000 g/mol;
- 7) a weight average molecular weight value of from 50,000 g/mol to 500,000 g/mol;
- and
- 8) a z-average molecular weight value of from 150,000 g/mol to 800,000 g/mol.
A C3-C40-olefin-ethylene-diene terpolymer comprising from 1 to 35 mol % ethylene, from 98.9 to 65 mol % C3-C40 olefin, and from 0.1 to 10 mol % diene, and having a polymer crystallinity of from 0% to 3%;
- a melt flow rate (at 230° C.) of from 0.2 g/10 min to 100 g/10 min;
- a glass transition temperature of from −2° C. to −25° C.;
- and a C3+ olefin tacticity index ratio [m/r] of greater than 0.4 and less than 1.2.
Dependencies are inferred from the claim text.