Novel Polymer Compositions and Methods of Making and Using Same
AssigneeChevron Phillips Chemical Company LP
InventorsMark L. HLAVINKA, Qing YANG, William B. BEAULIEU, Paul J. DESLAURIERS
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Abstract
A polymer reactor-blend comprising at least a first component having a polydispersity index of greater than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer and a second component having a polydispersity index of less than about 20 and is present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer wherein a molecular weight distribution of the second component lies within a molecular weight distribution of the first component.
Claims20
A polymer reactor-blend comprising at least a first component having a polydispersity index of greater than about 20 and present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer and a second component having a polydispersity index of less than about 20 and present in an amount of from about 1 wt. % to about 99 wt. % based on the total weight of the polymer wherein a molecular weight distribution of the second component lies within a molecular weight distribution of the first component.
A method of preparing a polymer pipe comprising:
- obtaining a polymer prepared by contacting ethylene monomer and 1-hexene with a catalyst composition comprising (i) an imine (bis) phenolate compound having Structure XIV
- where M is a Group 3 to Group 12 transition metal or lanthanide
- R2 and R3 can each independently be hydrogen, a halogen, a hydrocarbyl group, or a substituted hydrocarbyl group and (ii) a metallocene complex under conditions suitable for the formation of a polymer and Et2O is optional;
- and
- fabricating the polymer into a pipe wherein the polymer has zero shear viscosity of from about 1E+05 Pa-s to about 1E+10 Pa-s and a tensile natural draw ratio of less than about 600% and wherein the pipe has a PENT value of greater than about 800 hours as determined in accordance with ASTM F1473 using a 3.8 MPa stress.
A polymer reactor blend having a polydispersity index of greater than about 15 and a short-chain branching distribution maximum that occurs between a weight average molecular weight of about 30 kDa and 1000 kDa.
Dependencies are inferred from the claim text.