| abstract |
A polymer capable of forming a coating film having both antifouling properties due to super hydrophilicity and water resistance, a resin composition and an antifouling coating composition, a method for producing the polymer, and the polymer are used. The present invention provides a method for generating a zwitterionic structure on the surface of a coating film and a method for regenerating the zwitterionic structure. A polymer having a structure (I) represented by the following formula (I-1) or (I-2). In the formula, R 1 is an alkylene group which may have a substituent, or a group containing —O— or —S— between carbon atoms of the alkylene group, and R 2 to R 5 are each independently a hydrogen atom. , An optionally substituted alkyl group, an alkoxy group, or a phenyl group, and Z − is a counter anion. Even if two of R 2 to R 4 together form an alkylene group which may have a substituent, a group containing —O— between carbon atoms of the alkylene group, or a phenylene group Good. Either one of the two amino groups in formula (I-1) may be in the form of a salt. [Chemical 1] [Selection figure] None |