Granted Patent B2

US 7,976,730 · App. 12/197,870 · Granted Jul 12, 2011

Abstract

Claims (30)

1. A polymer blend comprising:

a first polymer including a nonionic polymer segment, the first polymer being a fluoroelastomer that is prepared by copolymerizing at least one fluoro-monomer and at least one non-fluoro-monomer wherein the fluoroelastomer has a glass transition temperature below about 25° C.; and

a second polymer having the following chemical moiety:

2. The polymer blend of claim 1 wherein the first polymer exhibits an elongation at break in a tensile mode of at least 50%.

3. The polymer blend of claim 1 wherein the fluoro-elastomer is be prepared by polymerizing at least one fluoro-monomer selected from the group consisting of vinylidene fluoride, tetrafluoroethylene, hexafluoropropylene, vinylfluoride, chlorotrifluoroethylene, perfluorovinylmethyl ether, and trifluoroethylene.

4. The polymer blend of claim 1 wherein the non-fluoro monomer is selected from the group consisting of ethylene, propylene, methyl methacrylate, ethyl acrylate, styrene, vinyl chloride and combinations thereof.

5. The polymer blend of claim 1 wherein the fluoro-elastomer is selected from the group consisting of poly(tetrafluoroethlyene-co-ethylene), poly(tetrafluoroethylene-co-propylene), and terpolymer of ethylene, tetrafluoroethylene and perfluoromethylvinylether.

6. The polymer blend of claim 1 wherein the second polymer is a perfluorosulfonic acid polymer.

7. The polymer blend of claim 1 wherein the second polymer comprises the following repeat unit:

(CF 2 —CF)—(OCF 2 CFX) m —O p —(CF 2 ) n —SO 3 H,

wherein:

X is fluorine or trifluoromethyl;

m is 0 to 3,

n is 1 to 12; and

p is 0 or 1.

8. The polymer blend of claim 1 wherein the second polymer comprises the following repeat unit:

(CF 2 —CF)—(OCF 2 CFX) m —O p —(CF 2 ) n —SO 3 H

wherein m=1, X═CF 3 , p=1, and n=2.

9. The polymer blend of claim 8 wherein the second polymer comprises the following repeat unit:

(CF 2 —CF)—(OCF 2 CFX) m —O p —(CF 2 ) n —SO 3 H

wherein m=0, p=1, and n=2.

10. The polymer blend of claim 8 wherein the second polymer comprises the following repeat unit:

(CF 2 —CF)—(OCF 2 CFX) m —O p —(CF 2 ) n —SO 3 H

wherein m=0, p=1, and n=4.

11. The polymer blend of claim 1 wherein the first polymer is present in an amount from about 1 to about 80 weight percent.

12. The polymer blend of claim 1 wherein the first polymer is present in an amount from about 5 to about 50 weight percent.

13. The polymer blend of claim 1 wherein the first polymer is present in an amount from about 10 to about 30 weight percent.

14. The polymer blend of claim 1 wherein the second polymer is present in an amount from about 50 to about 95 weight percent.

15. The polymer blend of claim 1 wherein the second polymer is present in an amount from about 70 to about 90 weight percent.

16. The polymer blend of claim 1 wherein the second polymer is present in an amount from about 20 to about 99 weight percent.

Assignments (14)