Ethylene-based polymers and processes to make the same

Patent metadata

Field	Value
Publication number	US-9523015-B2
Application number	US-201314438891-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Dec 28, 2012
Publication date	Dec 20, 2016
Grant date	Dec 20, 2016

Abstract

The invention provides a composition comprising an ethylene-based polymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene-based polymer has the following properties: a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; and b) a melt index (I2) from 3 to 30 g/10 min.

First claim

The invention claimed is:

1. A composition comprising an ethylene-based polymer, formed from a high pressure, free-radical polymerization, and wherein the ethylene-based polymer has the following properties:
a) a CO content from “greater than 0” to less than 10 weight percent CO (carbon monoxide), based on the weight of the polymer; and
b) a melt index (I2) from 3 to 30 g/10 min; and
wherein the ethylene-based polymer has a density from 0.910 to 0.950 g/cc; and
wherein the ethylene-based polymer has a melting point, Tm, in ° C., that meets the following relationship: Tm(° C.)<601.4*(Density in g/cc)−447.8(° C.).

2. The composition of claim 1 , wherein the ethylene-based polymer has a melting point, Tm, in ° C., that meets the following relationship:
Tm(° C.)<601.4*(Density in g/cc)−449(° C.).

3. The composition of claim 1 , wherein the ethylene-based polymer passes fiber tear adhesion, at a temperature of less than, or equal to, 320° C.

4. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature, Tm, from 101° C. to 113° C.

5. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature, Tm, from 103° C. to 113° C.

6. The composition of claim 1 , wherein the ethylene-based polymer has a melting temperature, Tm, greater than 102° C.

7. The composition of claim 1 , wherein the ethylene-based polymer has a CO content less than, or equal to, 3 weight percent, based on the weight of the polymer.

8. The composition of claim 1 , wherein the ethylene-based polymer has an amyl group level greater than, or equal to, 0.5 amyl group per 1000 carbon atoms, as determined by 13C NMR.

9. The composition of claim 1 wherein the composition further comprises a second ethylene-based polymer.

10. The composition of claim 9 , wherein the second ethylene-based polymer is selected from a LDPE, an ethylene/alpha-olefin copolymer, or a combination thereof.

11. An article comprising at least one component formed from the composition of claim 1 .

12. The article of claim 11 , wherein the article is a coated substrate.

13. The article of claim 11 , wherein the article is produced by extrusion coating or extrusion lamination.

Assignees

• Dow Global Technologies Llc

Inventors

• Karjala Teresa P
• Cooper James L
• Ortega Jose
• Kardos Lori L

Classifications

• C08L23/06 Primary

  Polyethylene · CPC title

• C08L23/0815

  with aliphatic 1-olefins containing one carbon-to-carbon double bond · CPC title

• B05D1/265

  Extrusion coatings · CPC title

• C09D123/06 Primary

  Polyethylene · CPC title

• C08L2205/02

  containing two or more polymers of the same C08L -group · CPC title