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1. WO2020112873 - ETHYLENE-BASED POLYMER COMPOSITION WITH BRANCHING AND PROCESS FOR PRODUCING THE SAME

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[ EN ]

CLAIMS

1. An ethylene-based polymer composition formed by high pressure (greater than or equal to 100 MPa), free-radical polymerization, by reacting: ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups.

2. The ethylene-based polymer composition of claim 1, wherein the hydrocarbon-based molecules have the Structure I:

Structure I


wherein n is from 3 to 160, and m is from 0 to 50.

3. The ethylene-based polymer composition of claim 2, wherein the mixture of hydrocarbon-based molecules based on Structure I has a molecular weight distribution from 1.2 to 10.

4. The ethylene-based polymer composition of claim 1, wherein the hydrocarbon-based molecules have the Structure II:

Structure II


wherein n is from 3 to 160, and m is from 0 to 50; x is from 0 to 160, and y is from 0 to 50.

5. The ethylene-based polymer composition of claim 4, wherein the mixture of hydrocarbon-based molecules based on Structure II has a molecular weight distribution from 1.2 to 10.

6. The ethylene-based polymer composition of any of claims 1-5 wherein the ethylene-based polymer composition has a G' value that meets the following relationship:

G' ³ C + Dlog(l2),

wherein C is 185 Pascal and D is -90 Pa/log(g/10 min), and

I2 is the melt index of the ethylene-based polymer composition, measured in grams/10 minutes (g/10 min).

7. The ethylene-based polymer composition of any one of claims 1-6, wherein the ethylene-based polymer composition comprises, in polymerized form, from 95 wt% to 99.98 wt% of ethylene, based on the total weight of the ethylene-based polymer composition.

8. The ethylene-based polymer composition of any one of claims 1-7, wherein the ethylene-based polymer composition comprises, in polymerized form, from 0.02 wt% to 5.0 wt% of the mixture of hydrocarbon-based molecules, based on the total weight of the ethylene-based polymer composition.

9. The ethylene-based polymer composition of any one of claims 1-8, wherein the ethylene-based polymer composition has a melt index (I2) from 0.10 g/10 min to 200 g/10 min.

10. The ethylene-based polymer composition of any one of claims 1-9, wherein the ethylene-based polymer composition has an alkenes content from 0.05/1000 carbons to 3.0/1000 carbons.

11. The ethylene-based polymer composition of any one of claims 1-10, wherein the ethylene-based polymer composition has a GI200 value from 0 mm2/24.6cm3 to 20 mm2/24.6cm3.

12. The ethylene-based polymer composition of any one of claims 1-11, wherein the ethylene-based polymer composition has a density from 0.909 g/cc to 0.940 g/cc.

13. The ethylene-based polymer composition of any one of claims 1-12, wherein the ethylene-based polymer composition is a low density polyethylene comprising, in polymerized form, ethylene monomer and the mixture of hydrocarbon-based molecules.

14. The ethylene-based polymer composition of any one of claims 1-13, further comprising a blend component, wherein the blend component does not include the mixture of hydrocarbon-based molecules.

15. An article comprising the composition of any one of claims 1-14.

16. The article of claim 15, wherein the article is selected from the group consisting of a film, a coating, a coating for a cable, a coating for a wire, and a coated sheet.

17. A process comprising:

reacting, in a polymerization reactor under free-radical polymerization conditions and at a pressure greater than or equal to 100 MPa, ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups; and

forming an ethylene-based polymer composition.

18. The process of claim 17 comprising reacting ethylene monomer with a mixture of hydrocarbon-based molecules, each the hydrocarbon-based molecule having the Structure I:

Structure I


wherein n is from S to 160, and m is from 0 to 50; and

forming an ethylene-based polymer.

19. The process of any of claims 17-18, wherein the polymerization takes place in a reactor configuration comprising at least one tubular reactor.

20. The process of any of claims 17-18, wherein the polymerization takes place in a reactor configuration comprising at least one autoclave reactor.