Polymer and macromolecular solid electrolyte containing the same

A polymer which is obtained by polymerizing a monomer having an acid group to a compound represented by the following formula (2):

• R1O—(—R2O)n—Rhu 3 (2)
• wherein R1 and R3 independently represent a hydrogen atom, a group having a carboxylic acid group or a sulfonic acid group, a linear or branched alkyl group of 1 to 4 carbon atoms, or an aryl group of 6 to 10 carbon atoms;
• R2 represents a linear or branched alkylene of 1 to 4 carbon atoms;
• and
• n is in the range of 3 to 500,
• to obtain a polymer (A), and causing said polymer (A) to react with a cationic nitrogen-containing compound.

A polymer which is obtained by polymerizing a monomer having an acid group to a compound represented by the above-mentioned formula (2):

• R1O—(—R2O)n—R3 (2)
• wherein R1 and R3 independently represent a hydrogen atom, a group having a carboxylic acid group or a sulfonic acid group, a linear or branched alkyl group of 1 to 4 carbon atoms, or an aryl group of 6 to 10 carbon atoms;
• R2 represents a linear or branched alkylene of 1 to 4 carbon atoms;
• and n is in the range of 3 to 500,
• in the presence of a monoethylenic monomer, to obtain a polymer (B), and causing said polymer (B) to react with a cationic nitrogen-containing compound.