MIXTURE COMPRISING SULFONATE GROUP-CONTAINING COMPOUND AND METHOD OF MANUFACTURING THE SAME, SOLUTION COMPOSITION, POLYURETHANE RESIN AND METHOD OF MANUFACTURING THE SAME, AND MAGNETIC RECORDING MEDIUM

摘要

An aspect of the present invention relates to a mixture of a sulfonate group-containing compound denoted by general formula (1) with a protonic acid: wherein, in general formula (1), X denotes a divalent linking group; each of R1 and R2 independently denotes an alkyl group comprising at least one hydroxyl group and equal to or more than three carbon atoms or an aralkyl group comprising at least one hydroxyl group and equal to or more than eight carbon atoms; and M denotes a cation.