| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a sulfonated polymer which has excellent hot water resistance even when the amount of sulfonic acid group introduced into the polymer is increased. <P>SOLUTION: The polyarylene-based copolymer includes a condensed aromatic ring constituent unit and a constituent unit having a nitrogen-containing heterocycle group respectively represented by formulas (2) and (8) (in formula (2), each of A and D is a direct bond, -O-, -S-, -CO- etc., B is an oxygen atom or a sulfur atom, Ph is a divalent group having a condensed aromatic ring structure, each of R<SB>1</SB>to R<SB>20</SB>is a hydrogen atom, a fluorine atom, an alkyl group etc., each of l and m is an integer of 0 to 4, q is an integer of 2 or more, t is an integer of 0 to 4, n and p are compositional ratios of respective constituents, p is a value of >0 and ≤1, and n+p=1: in formula (8), Z is a direct bond, -O-, -S-, etc., Y is -CO-, -SO<SB>2</SB>-, -SO-, -CONH-, -COO- etc., R<SB>21</SB>is a nitrogen-containing heterocycle group, q is an integer of 1 to 5, and p is an integer of 0 to 4). <P>COPYRIGHT: (C)2010,JPO&INPIT |
