Patent Number: 8,796,368

Title: Water-and oil-repellent

Abstract: A water- and oil-repellent comprising an aqueous dispersion of a fluorine-containing copolymer including as a copolymerization unit (a) a perfluoroalkylalkyl (meth)acrylate represented by the general formula C.sub.nF.sub.2n+1C.sub.mH.sub.2mOCOCR.dbd.CH.sub.2 (wherein R represents hydrogen atom or methyl group; n represents 4, 5, or 6; and m represents 1, 2, 3, or 4), (b) benzyl (meth)acrylate, (c) a fluorine-free polymerizable monomer other than benzyl (meth)acrylate, and (d) a cross-linkable group-containing polymerizable monomer; and a blocked isocyanate added to the aqueous dispersion in a weight ratio of 0.05 to 3.0 to the weight of the solid content of the aqueous dispersion.

Inventors: Jin; Ji-Shan (Ibaraki, JP), Mouri; Sumiko (Ibaraki, JP), Sato; Katsuyuki (Ibaraki, JP)

Assignee: Unimatec Co., Ltd.

International Classification: C08F 220/24 (20060101); C08K 5/29 (20060101); C08F 214/08 (20060101); C08F 220/16 (20060101)

Expiration Date: 8/05/12018