PURPOSE: To obtain a water and oil repellent and a stainproofing agent excellent in water and oil repellency, stainproofness, flexibilizing effect, etc., by using a specific fluorinated graft copolymer as the effective component.
CONSTITUTION: A fluorinated graft copolymer is produced by copolymerizing a monomer having a polyfluoroalkyl group (e.g. a compd. of formula I or II) with a nonfluorinated macromonomer having a terminal addition-polymerizable unsatd. group copolymerizable with the above monomer. The copolymer is used as the effective component for producing a water and oil repellent and a stainproofing agent. Examples of the addition-polymerizable unsatd. group of the macromonomer are (meth)acryloyl, styryl, allyl, and vinyl ester groups. A pref. example of the macromonomer is a compd. of formula III (wherein m is 10-500). A macromonomer having a glass transition point or m.p. of 35°C or higher is pref. for obtaining a stainproofing agent for a carpet.
HAYASHI KAZUNORI
ENOMOTO KOJI
MORITA MASAMICHI
UEDA MASAHIKO
SANO TARO
Next Patent: MANUFACTURE OF RUBBER VIBRATION INSULATOR