US 7,615,592 B2
	Process for producing water- and oil-repellent agent
Toshimasa Sagawa, Kitaibaraki (Japan); and Haruyoshi Tatsu, Kitaibaraki (Japan)
Assigned to Unimatec Co., Ltd, Tokyo (Japan)
Appl. No. 11/628,587 PCT Filed May 27, 2005, PCT No. PCT/JP2005/009747 § 371(c)(1), (2), (4) Date Dec. 04, 2006, PCT Pub. No. WO2005/118737, PCT Pub. Date Dec. 15, 2005.
Claims priority of application No. 2004-166542 (JP), filed on Jun. 04, 2004.
Prior Publication US 2008/0071025 A1, Mar. 20, 2008
Int. Cl. C08L 75/00 (2006.01)

U.S. Cl. 524—507  [524/544; 524/556; 524/560; 524/805]

11 Claims

1. A process for producing a water- and oil-repellent agent, which process comprises subjecting (a) 15-85% by weight of polyfluoroalkylethyl acrylate, (b-1) 5-65% by weight of 2-ethylhexyl methacrylate, and (b-2) 1-40% by weight of benzyl methacrylate to an emulsification treatment in the presence of (c) a polyethylene oxide adduct type, cationic surfactant, or both of the cationic surfactant and a polyethylene oxide adduct type, non-ionic surfactant, and (d) a glycol-based compound, followed by copolymerization reaction in the presence of a polymerization initiator, and admixing the resulting aqueous dispersion with (e) a blocked isocyanate.