IP Library › Granted Patent US 10,035,144
Granted Patent B2
US 10,035,144 · App. 15/591,682 · Granted Jul 31, 2018

Multi-acid polymers and methods of making the same

Inventor: Rameshwar Yadav (Novi, MI)
Assignee: Nissan North America, Inc.
B01J39/20B01J39/05C07C311/09C07F9/3873C08F8/36C08F8/40C08J5/225H01M8/0239C08J2327/22C08J2329/10C08J2341/00H01M2250/20
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Quick Facts
Patent No.
US 10,035,144
App. No.
15/591,682
Granted
Jul 31, 2018
Kind
B2
Abstract

Multi-acid polymers for use as a fuel cell membrane, for example, have multi-acid monomers that have an imide base and more than two proton conducting groups. The multi-acid polymers are made by reacting a polymer precursor in sulfonyl fluoride or sulfonyl chloride form with a compound with an acid giving group. One example of a multi-acid polymer is: wherein R is one or more units of a non-SO 2 F or non-SO 2 Cl portion of a polymer precursor in sulfonyl fluoride or sulfonyl chloride form.

Claims (16)

1. A multi-acid polymer having a multi-acid monomer with a following formula:

wherein R is one or more units of a non-SO 2 F or non-SO 2 Cl portion of a polymer precursor in sulfonyl fluoride or sulfonyl chloride form.

2. The multi-acid polymer of claim 1 , wherein the polymer precursor is 2-allyloxy-1,1,2,2-tetrafluoro ethane sulfonyl fluoride.

3. The multi-acid polymer of claim 1 , wherein the polymer precursor is 4-(trifluoro vinyl) benzene sulfonyl fluoride.

4. The multi-acid polymer of claim 1 , wherein the polymer precursor is p-styrene sulfonyl fluoride/chloride.

5. The multi-acid polymer of claim 1 , wherein the polymer precursor is perfluoro (3-oxapent-4-ene) sulfonyl fluoride.

6. The multi-acid polymer of claim 1 , wherein the polymer precursor is ethene sulfonyl fluoride.

7. A multi-acid membrane made from the multi-acid polymer of claim 1 .

8. A multi-acid polymer having a multi-acid monomer with a following formula:

wherein R is one or more units of a non-SO 2 F or non-SO 2 Cl portion of a polymer precursor in sulfonyl fluoride or sulfonyl chloride form.

9. A multi-acid membrane made from the multi-acid polymer of claim 8 .

10. The multi-acid polymer of claim 8 , wherein the polymer precursor is 2-allyloxy-1,1,2,2-tetrafluoro ethane sulfonyl fluoride.

11. The multi-acid polymer of claim 8 , wherein the polymer precursor is 4-(trifluoro vinyl) benzene sulfonyl fluoride.

12. The multi-acid polymer of claim 8 , wherein the polymer precursor is p-styrene sulfonyl fluoride/chloride.

13. The multi-acid polymer of claim 8 , wherein the polymer precursor is perfluoro (3-oxapent-4-ene) sulfonyl fluoride.

14. The multi-acid polymer of claim 8 , wherein the polymer precursor is ethene sulfonyl fluoride.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 15, 2018
From: NISSAN NORTH AMERICA, INC.
To: NISSAN MOTOR CO., LTD.
Reel/Frame 047518/0822 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 10, 2017
From: YADAV, RAMESHWAR
To: NISSAN NORTH AMERICA, INC.
Reel/Frame 042326/0816 →
Continuity (2)
Division 15078374 · Mar 23, 2016
Related Publication 20170274369A1 · Sep 28, 2017