| abstract |
An object of the present invention is to provide a polymer having a high antistatic function, high solubility in solvents and high compatibility in a blend, and an antistatic agent, a curable composition, or a water / oil repellent agent containing the polymer. A linear block polymer, a block star polymer or a block graft polymer, and a composition containing the at least one block, wherein the anion and the counter cation of the polymer side chain form an onium salt. It is preferable that the number average molecular weight of a linear block polymer is 20,000 or less, and it is preferable that a number average molecular weight of a block star polymer and a block graft polymer is 10,000 or more. |