| abstract |
A water repellent oil repellent composition capable of imparting sufficient dynamic water repellency and water repellency after air drying to a surface of the article, and also having a low environmental load, a method for producing the same, and a method for treating the article. A copolymer which has a structural unit based on the following monomer (a), the structural unit based on the following monomer (b), and the structural unit based on the following monomer (c), and whose mass mean molecular weight is 40000 or more, and contains a medium A water and oil repellent composition is used. Monomer (a): a compound represented by (ZY) n X. Z is a polyfluoroalkyl group having 1 to 6 carbon atoms, Y is a divalent organic group, n is 1 or 2, and X is a polymerizable unsaturated group. Monomer (b): The olefin whose glass transition temperature of a homopolymer is 50 degrees C or less. Monomer (c): (meth) acrylate which does not have a polyfluoroalkyl group and has an alkyl group of 12-30 carbon atoms. |