Patent ID: 6624268
Filing Date: 2003-09-23
Classification: C08F,D06M

Abstract:
A process for producing a water and oil repellent aqueous dispersion, comprising emulsifying a stock composition comprising the following polymerizable monomer (A), the following surfactant (B) and the following aqueous medium (C) under pressure and polymerizing the stock composition to form an aqueous dispersion having a polymer (X) comprising polymer units derived from the polymerizable monomer (A) dispersed in the aqueous medium (C):polymerizable monomer (A): a polymerizable monomer consisting of a (meth)acrylate (a1) having a polyfluoroalkyl group or consisting of a (meth)acrylate (a1) having a polyfluoroalkyl group and a polymerizable monomer (a2) other than the (meth)acrylate (a1) having a polyfluoroalkyl group; surfactant (B): a surfactant which is a non-fluorine type surfactant containing no aromatic group and contains from 60 to 100 mass % of a nonionic surfactant; and aqueous medium (C): an aqueous medium consisting of water and a solvent having a viscosity of at least 3 cP at 25Â° C.