Process for preparing a water- and oil-repellent agent of aqueous dispersion type

摘要

The present invention discloses a process for preparing a water- and oil-repellent agent for textile including conducting a polymerization in a mixture of perfluoroalkyl(meth)acrylate (mixture)/alkyl(meth)acrylate/hydroxyalkyl(meth)acrylate/polyoxyalkylene glycol mono(meth)acrylate/non-ionic surfactant/ionic surfactant/vinyl monomer/chain transfer agent/water/organic dissolution agent/free radical initiator under stirring to form an emulsion containing a copolymer particles having an average particle size of about 100 nm, which can be diluted with water as desired to form a water- and oil-repellent agent aqueous dispersion. The process of the present invention does not require a high pressure homogenizer or a special emulsifying equipment.