Partially fluorinated elastomers and methods of making and using thereof

Patent metadata

Field	Value
Publication number	US-10329404-B2
Application number	US-201414781939-A
Country	US
Kind code	B2
Filing date	Apr 30, 2014
Priority date	May 2, 2013
Publication date	Jun 25, 2019
Grant date	Jun 25, 2019

Abstract

Described herein is a composition comprising: (i) a partially fluorinated elastomer gum comprising a partially fluorinated polymer; and (ii) less than 10 wt % of an ionic liquid based on the total weight of the partially fluorinated polymer and the ionic liquid.

First claim

What is claimed is:

1. A composition comprising:
(i) a partially fluorinated elastomer gum comprising a partially fluorinated polymer; and
(ii) less than 10 wt % of an ionic liquid based on the total weight of the partially fluorinated polymer and the ionic liquid, wherein partially fluorinated polymer has a first glass transition temperature and the addition of the ionic liquid to the partially fluorinated polymer has a second glass transition temperature and the second glass transition temperature is less than 2° C. different from the first glass transition temperature.

2. The composition according to claim 1 , wherein the amount of the ionic liquid is greater than 0.01 wt % and less than 1.0 wt % based on the total weight of the ionic liquid and the partially fluorinated polymer.

3. The composition according to claim 1 , wherein the amount of the ionic liquid is greater than 1.0 wt % and less than 10.0 wt % based on the total weight of the ionic liquid and the partially fluorinated polymer.

4. The composition according to claim 1 , wherein the ionic liquid has a melting point of about 100° C. or less.

5. The composition according to claim 1 , wherein the partially fluorinated polymer is a copolymer.

6. The composition according to claim 1 with the proviso that the partially fluorinated polymer is not a vinylidene fluoride/hexafluoropropylene copolymer.

7. The composition according to claim 1 , wherein the anion of the ionic liquid comprises a perfluoroalkyl group.

8. The composition according to claim 1 , further comprising an organic filler selected from at least one of a polytetrafluoroethylene powder and a TFE/perfluorovinyl ether copolymer powder.

9. The composition according to claim 1 , wherein the composition is non-conductive.

10. The composition according to claim 1 , wherein the partially fluorinated elastomer gum is peroxide curable.

11. The composition according to claim 1 , wherein the partially fluorinated elastomer gum is bisphenol or amine curable.

12. The composition according to claim 1 , further comprising a cure system.

13. The composition according to claim 1 , wherein the ionic liquid comprises a cation and an anion and the anion is a bis(trifluoromethylsulfonyl) imide.

14. An article comprising the composition according to claim 1 .

15. A cured article comprising the composition according to claim 1 .

16. The cured article according to claim 15 , wherein the cured article is a hose, a gasket, or a seal.

17. A composition comprising:
(i) a cured partially fluorinated elastomer comprising a partially fluorinated polymer; and
(ii) less than 10 wt % of an ionic liquid based on the total weight of the partially fluorinated polymer and the ionic liquid, wherein partially fluorinated polymer has a first glass transition temperature and the addition of the ionic liquid to the partially fluorinated polymer has a second glass transition temperature and the second glass transition temperature is less than 2° C. different from the first glass transition temperature.

18. A method comprising blending (i) partially fluorinated elastomer gum comprising a partially fluorinated polymer and (ii) less than 10 wt % of an ionic liquid based on the total weight of the partially fluorinated polymer and the ionic liquid, wherein partially fluorinated polymer has a first glass transition temperature and the addition of the ionic liquid to the partially fluorinated polymer has a second glass transition temperature and the second glass transition temperature is less than 2° C. different from the first glass transition temperature.

Assignees

• 3M Innovative Properties Co

Inventors

• Suzuki Yuta
• Fukushi Tatsuo

Classifications

• C08L27/16

  Homopolymers or copolymers or vinylidene fluoride · CPC title

• C08K5/43 Primary

  Compounds containing sulfur bound to nitrogen · CPC title

• C08L101/04

  containing halogen atoms · CPC title

• C08L27/20

  Homopolymers or copolymers of hexafluoropropene · CPC title