| abstract |
A copolymer is provided which is capable of providing an article surface with sufficient oil repellency against oils having low surface tensions and which places little burden on the environment. Further, a method for producing such a copolymer, an oil repellent composition containing such a copolymer as an effective component, and an article which is excellent in oil repellency against oils having low surface tensions and which contains no material having high environmental burden, are provided. n A copolymer comprising the following polymerized units (a), polymerized units (b), polymerized units (c1) and polymerized units (c2), and an oil repellent composition and article containing it. (a) is polymerized units based on a monomer such as a (meth)acrylate having R 1 , (b) is polymerized units based on a C 6-18 alkyl (meth)acrylate, (c1) is polymerized units based on a monomer having a hydroxy group, and (c2) is polymerized units based on a monomer having a functional group reactive with the hydroxy group in (c1) to form a crosslinked structure. |