Patent ID: 7968612

Claim:
A modified ion exchange resin, wherein at least one cation selected from (A) and (B) shown below is ionically bonded to an acidic functional group of an acidic ion exchange resin, (A) a cation represented by Formula 1: wherein, P is a phosphorous atom; S is a sulfur atom; H is a hydrogen atom; R 1 is an alkylene or an alkenylene group having 1 to 6 carbon atom(s) which may have an alkyl group having 1 to 6 carbon atom(s), a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 5 to 10 carbon atoms, or a hydroxyl group as a substituent, and in which the one carbon may be replaced to a silicon atom and one moiety thereof may have a phenylene group; and each of R 2 , R 3 , and R 4 independently is (1) an alkyl or an alkenyl group having 1 to 6 carbon atom(s) which may have a hydroxyl group or an aryl group having 5 to 10 carbon atoms as a substituent, (2) a cycloalkyl group having 5 to 10 carbon atoms, or (3) an aryl group having 5 to 10 carbon atoms, and any one of R 2 , R 3 , and R 4 may be hydrogen; and (B) a cation represented by Formula 2: wherein, P is a phosphorous atom; S is a sulfur atom; H is a hydrogen atom; R 1 and R 2 each is an alkylene or an alkenylene group having 1 to 6 carbon atom(s) which may have an alkyl group having 1 to 6 carbon atom(s), a cycloalkyl group having 5 to 10 carbon atoms, an aryl group having 5 to 10 carbon atoms, or a hydroxyl group as a substituent, and in which the one carbon may be replaced to a silicon atom and one moiety thereof may have a phenylene group; and each of R 3 and R 4 independently is an alkyl group having 1 to 6 carbon atom(s), a cycloalkyl group having 5 to 10 carbon atoms, or an aryl group having 5 to 10 carbon atoms, and any one of them may be hydrogen, wherein said cation is ionically bonded to 0.1 to 50 mol % of the total acidic functional groups existing in said acidic ion exchange resin.