Polyethylene copolymers and products and methods thereof

Patent metadata

Field	Value
Publication number	US-11326002-B2
Application number	US-202017063488-A
Country	US
Kind code	B2
Filing date	Oct 5, 2020
Priority date	Oct 4, 2019
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A polymer composition may include a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate; wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1 to 60, obtained by GPC.

First claim

What is claimed:

1. A polymer composition, comprising:
a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate;
wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1.5 to 60, obtained by GPC.

2. The polymer composition of claim 1 , wherein the one or more branched vinyl ester monomers have the general structure (II):

wherein R 4 and R 5 have a combined carbon number of 7.

3. The polymer composition of claim 1 , wherein the polymer is a copolymer consisting of ethylene, the one or more branched vinyl ester.

4. The polymer composition of claim 1 , wherein the polymer has a vinyl branched vinyl ester content ranging from 0.01 to 90 wt %.

5. The polymer composition of claim 1 , wherein the polymer is a terpolymer consisting of ethylene, the one or more branched vinyl ester and vinyl acetate.

6. The polymer composition of claim 5 , wherein the polymer has a branched vinyl ester content ranging from 0.01 to 89.99 wt %.

7. The polymer composition of claim 5 , wherein the polymer has a vinyl acetate content ranging from 0.01 to 89.99 wt %.

8. The polymer composition of claim 1 , wherein the polymer is polymerized under conditions comprising a reactor pressure of greater than 40 bar and a reactor temperature of greater than 50° C.

9. The polymer composition of claim 1 , wherein the polymer is polymerized under conditions comprising a reactor pressure of greater than 1000 bar and a reactor temperature of greater than 50° C.

10. The polymer composition of claim 1 , wherein the polymer has an ethylene content ranging from 10 to 99.99 wt %.

11. The polymer composition of claim 1 , wherein the long chain branching frequency ranges from 0 to 10, as measured by GPC.

12. The polymer composition of claim 1 , wherein the long chain branching content ranges from 0 to 10, as measured by 13 CNMR.

13. The polymer composition of claim 1 , wherein the melting temperature of the polymer, according to ASTM D3418, ranges from 0 to 150° C.

14. The polymer composition of claim 1 , wherein the crystallization temperature of the polymer, according to ASTM D3418, ranges from 0 to 150° C.

15. The polymer composition of claim 1 , wherein the heat of crystallization, according to ASTM D3418, ranges from 0 to 280 J/g.

16. The polymer composition of claim 1 , wherein the polymer has a heat flow versus temperature curve, measured by thermal fractionation by successive self-nucleation and annealing with 10° C. steps, that has 0 to 20 minimums.

17. The polymer composition of claim 16 , wherein the minimums are in a temperature range of 0 to 150° C.

18. The polymer composition of claim 1 , wherein a ratio of a first weight loss, between 250 to 400° C., relative to a total comonomer content, ranges from 0 to 2.

19. The polymer composition of claim 1 , wherein the polymer has a storage modulus at 0° C. ranging from 0.1 MPa to 10 GPa.

20. The polymer composition of claim 1 , wherein the polymer has 1 to 2 relaxation maximums in a tan δ versus temperature plot between −75 to 75° C.

21. The polymer composition of claim 20 , wherein T α varies between −75 and 75° C.

22. The polymer composition of claim 20 , wherein T β varies between −75 and 50° C.

23. The polymer composition of claim 1 , wherein the MFR according to ASTM D1238 at 190° C./2.16 kg ranges from 0.01 g/10 min to 1000 g/10 min.

24. The polymer composition of claim 1 , wherein the density according to ASTM D792 ranges from of 0.85 g/cm 3 to 1.3 g/cm 3 .

25. The polymer composition of claim 1 , wherein the bio-based carbon content according to ASTM D6866-18 ranges from of 1% to 100%.

26. An article prepared from the polymer composition of claim 1 .

27. The article of claim 26 , wherein the article is a seal, a hose, a footwear insole, a footwear midsole, a footwear outsole, an automotive bumper, sealing systems, hot melt adhesives, films, conveyor belts, sportive articles, rotomolded articles, primers, linings, industrial flooring, and acoustic insulation.

Assignees

• Braskem Sa

Inventors

• Hanlon Ashley
• Mohammadi Hadi
• Domingues Jr Nei Sebastiao
• Simanke Adriane Gomes
• Cangussu Manoela Ellwanger
• Busch Markus
• Hintenlang Sascha

Classifications

• C08F210/02 Primary

  Ethene · CPC title

• C08F218/10

  of monocarboxylic acids containing three or more carbon atoms · CPC title

• C08F218/08

  Vinyl acetate · CPC title

• C08F216/36

  by a ketonic radical · CPC title