Radically Coupled Resins and Methods of Making and Using Same

Patent metadata

Field	Value
Publication number	US-2016115255-A1
Application number	US-201514933847-A
Country	US
Kind code	A1
Filing date	Nov 5, 2015
Priority date	Mar 13, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

A radically coupled polymer having a density of from about 0.915 g/ml to about 0.975 g/ml characterized by a crossover modulus that is equal to or less than y mn where y mn =18000e −0.15x and x is the number average molecular weight of the radically coupled polymer. An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. %; a level of long chain branching ranging from about 0.001 LCB/10 3 carbons to about 1.5 LCB/10 3 carbons as determined by SEC-MALS; and characterized by a crossover modulus that is equal to or less than y mn where y mn =18000e −0.15x and x is the number average molecular weight of the radically coupled polymer.

First claim

What is claimed is:

1 . A radically coupled polymer having a density of from about 0.915 g/ml to about 0.975 g/ml characterized by a crossover modulus that is equal to or less than y mn where y mn =18000e −0.15x and x is the number average molecular weight of the radically coupled polymer.

2 . The polymer of claim 1 characterized by a crossover modulus that is equal to or less than y mz where y mz =193266e −0.005535x and x is the z-average molecular weight of the radically coupled polymer.

3 . The polymer of claim 1 characterized by a crossover frequency that is equal to or less than the value f mn where f mn =3000e −0.25x and x is the number average molecular weight of the radically coupled polymer.

4 . The polymer of claim 1 characterized by a crossover frequency that is equal to or less than the value f mz where f mz =500e −0.01x and x is the z-average molecular weight of the radically coupled polymer.

5 . The polymer of claim 1 having a weight-average molecular weight ranging from about 25 Kg/mol to about 250 Kg/mol.

6 . The polymer of claim 1 having a polydispersity index of from about 4 to about 40.

7 . The polymer of claim 1 having at least two types of short chain branching.

8 . The polymer of claim 7 wherein the types of short chain branching are selected from the group consisting of ethyl, butyl, hexyl, 4-methylpentyl and octyl.

9 . The polymer of claim 1 having a flow activation energy of from about 35 kJ mol −1 to about 70 kJ mol −1 .

10 . An ethylene polymer having a level of short chain branching ranging from about 0 to about 10 mol. %; a level of long chain branching ranging from about 0.001 LCB/10 3 carbons to about 1.5 LCB/10 3 carbons as determined by SEC-MALS; and characterized by a crossover modulus that is equal to or less than y mn where y mn =18000e −0.15x and x is the number average molecular weight of the radically coupled polymer.

11 . An ethylene polymer characterized by a higher molecular weight (HMW) component and a lower molecular weight (LMW) component having a polydispersity index ranging from about 8 to about 25; a level of long chain branching ranging from about 0.001 LCB/10 3 carbons to about 1.5 LCB/10 3 carbons as determined by SEC-MALS and characterized by a crossover modulus that is equal to or less than y mn where y mn =18000e −0.15x and x is the number average molecular weight of the radically coupled polymer.

12 . The polymer of claim 11 having a weight-average molecular weight ranging from about 350 g/mol to about 50,000 g/mol.

13 . The polymer of claim 11 wherein the LMW component has a weight average molecular weight ranging from about 350 g/mol to about 40,000 g/mol.

14 . The polymer of claim 11 having a polydispersity index of from about 1 to about 50.

15 . The polymer of claim 11 characterized by a crossover modulus that is equal to or less than y mz where y mz =193266e −0.005535x and x is the z-average molecular weight of the radically coupled polymer.

16 . The polymer of claim 11 characterized by a crossover frequency that is equal to or less than the value f mn where f mn =3000e −0.25x and x is the number average molecular weight of the radically coupled polymer.

17 . The polymer of claim 11 characterized by a crossover frequency that is equal to or less than the value f mz where f mz =500e −0.01x and x is the z-average molecular weight of the radically coupled polymer.

18 . The polymer of claim 11 having a high load melt index in the range of from about 100 dg/min. to about 5000 dg/min as determined in accordance with ASTM D1238.

19 . The polymer of claim 11 characterized by a shear response in the range of from about 10 to about 500.

20 . The polymer of claim 11 characterized by a zero shear viscosity in the range of from about 1.0E+00 Pa-s to about 1.0E+06 Pa-s.

Assignees

• Chevron Phillips Chemical Co

Inventors

• Cruz Carlos A
• Mcdaniel Max P
• Yang Qing
• Barr Jared L
• Yu Youlu

Classifications

• C08F2810/20

  leading to a crosslinking, either explicitly or inherently · CPC title

• C08F10/02 Primary

  Ethene · CPC title