ANTISTATIC AGENT FOR SYNTHETIC POLYMER FILM, AQUEOUS COMPOSITION CONTAINING THIS AND ANTISTATIC TREATMENT PROCESS FOR SYNTHETIC POLYMER FILM USING THIS AQUEOUS COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide an antistatic agent for synthetic polymers which imparts an excellent antistatic property to a synthetic polymer film, even under a low- humidity condition, makes an excellent combination with an adhesive without decreasing its adhesion property and does not limit the reusability of the synthetic polymer films. SOLUTION: An antistatic agent comprises a vinyl homopolymer and/or a vinyl copolymer which has a number average molecular weight of from 5,000 to 1,000,000 and comprises a repeating unit of formula I, wherein R1 is hydrogen or a methyl group; R2-R5 are each a 2-3C hydoxyalkyl group, a 1-6C alkyl group a phenyl group or a benzyl group, wherein one or more is a 2-3C hydroxyalkyl group; and B is a 1-6C alkylene group, a phenylene group, -CONH- R6- or -COO-R7-, wherein R6 and R7 are each a 1-6C alkylene group, wherein all or a part of the repeating units have specific sulfonate anion groups as anion pairs and specific quaternary ammonium salt groups as cation pairs.