| 摘要 |
Provided is a surface treatment agent that does not use a fluorine-containing monomer, and in particular does not use a monomer containing a fluoroalkyl group. Disclosed are (1) a non-fluorinated polymer that comprises a repeating unit that is derived from a long-chain (meth)acrylate ester monomer indicated by formula (a), CH2=CA11-C(=O)-O-A12 (wherein A11 is a hydrogen atom or a methyl group, and A12 is a straight chain or branched aliphatic hydrocarbon group that has 18-30 carbons), (2) a surfactant that contains a surface-active compound that has either or both an amide group and an amino group, and (3) a surface treatment agent that is an aqueous emulsion that contains a liquid medium that contains water. |
