Long chain branched polymers and methods of making same
US-9023967-B2 · May 5, 2015 · US
Long chain branched polymers and methods of making same
US9598513B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9598513-B2 |
| Application number | US-201514676581-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 1, 2015 |
| Priority date | Nov 30, 2011 |
| Publication date | Mar 21, 2017 |
| Grant date | Mar 21, 2017 |
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- Title
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Abstract
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A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 8 long chain branches per million carbon atoms, a polydispersity index of greater than about 20 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than about 1 long chain branches per chain, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution.
First claim
Opening claim text (preview).
What is claimed is: 1. A polyethylene polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms and a polydispersity index (M w /M n ) of greater than about 20, wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. 2. The polymer of claim 1 wherein the long-chain branching content peaks at greater than about 1.0 long-chain branches per chain. 3. The polymer of claim 1 wherein the long-chain branching content peaks at about 25 long chain branches per million carbon atoms. 4. The polymer of claim 1 wherein the long-chain branching content peaks at about 30 long chain branches per million carbon atoms. 5. The polymer of claim 1 having a melt index of from about 0 dg/min to about 1.00 dg/min. 6. The polymer of claim 1 having a density of from about 0.90 g/cc to about 0.97 g/cc. 7. The polymer of claim 1 having a density of from about 0.93 g/cc to about 0.97 g/cc. 8. The polymer of claim 1 having a melt index of from about 0.1 dg/min to about 10 dg/min. 9. The polymer of claim 1 having a polydispersity index of greater than about 25. 10. The polymer of claim 1 wherein the long-chain branching content peaks at greater than about 1.5 long-chain branches per chain. 11. The polymer of claim 1 wherein the long-chain branching content peaks at greater than about 2.0 long-chain branches per chain. 12. A polyethylene polymer having a polydispersity index of greater than about 25 and a long chain branching content wherein the long-chain branching content peaks at greater than about 1.0 long-chain branches per chain and wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. 13. The polymer of claim 12 having a density of from about 0.90 Wee to about 0.97 g/cc. 14. The polymer of claim 12 having a density of from about 0.93 g/cc to about 0.97 g/cc. 15. The polymer of claim 12 having a melt index of from about 0 dg/min to about 100 dg/min. 16. The polymer of claim 12 having a melt index of from about 0.1 dg/min to about 10 dg/min. 17. The polymer of claim 12 wherein the long-chain branching content peaks at about 25 long chain branches per million carbon atoms. 18. The polymer of claim 12 wherein the long-chain branching content peaks at about 30 long chain branches per million carbon atoms. 19. The polymer of claim 12 wherein the long-chain branching content peaks at greater than about 1.5 long-chain branches per chain. 20. The polymer of claim 12 wherein the long-chain branching content peaks at greater than about 2.0 long-chain branches per chain.
Assignees
Inventors
Classifications
Heat treatment {(B01J37/0009, B01J37/0018 take precedence)} · CPC title
Long chain branches · CPC title
Silica · CPC title
Chromium · CPC title
- C08F110/02Primary
Ethene · CPC title
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- What does patent US9598513B2 cover?
- A polymer having a long chain branching content peaking at greater than about 20 long chain branches per million carbon atoms, and a polydispersity index of greater than about 10 wherein the long chain branching decreases to approximately zero at the higher molecular weight portion of the molecular weight distribution. A polymer having a long chain branching content peaking at greater than abou…
- Who is the assignee on this patent?
- Chevron Phillips Chemical Co Lp
- What technology area does this patent fall under?
- Primary CPC classification C08F110/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Mar 21 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).