Multi-acid polymers and methods of making the same
AssigneeNissan North America, Inc.
InventorRameshwar Yadav
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Abstract
A method of making a multi-acid polymer comprising: reacting a polymer precursor in sulfonyl fluoride or sulfonyl chloride form with anhydrous ammonia to obtain a sulfonamide, wherein the polymer precursor in sulfonyl fluoride or sulfonyl chloride form has a formula R—SO2F or R—SO2Cl, respectively, with R being one of more units of the polymer precursor without sulfonyl fluoride or sulfonyl chloride, and wherein the sulfonamide has a formula R—SO2—NH2; and reacting the sulfonamide with a compound of a formula COOH—X-AGG under a mild base condition, wherein X is one of C6H3 or N(CH2)3 and AGG is an acid giving group, to form the multi-acid polymer having an imide base and more than two proton conducting groups.
Claims11
A method of making a multi-acid polymer comprising:
- reacting a polymer precursor in sulfonyl fluoride or sulfonyl chloride form with anhydrous ammonia to obtain a sulfonamide, wherein the polymer precursor in sulfonyl fluoride or sulfonyl chloride form has a formula R—SO2F or R—SO2Cl, respectively, with R being one of more units of the polymer precursor without sulfonyl fluoride or sulfonyl chloride, and wherein the sulfonamide has a formula R—SO2—NH2;
- and
- reacting the sulfonamide with a compound of a formula COOH—X-AGG under a mild base condition, wherein X is one of C6H3 or N(CH2)3 and AGG is an acid giving group, to form the multi-acid polymer having an imide base and more than two proton conducting groups.
Dependencies are inferred from the claim text.