公开(公告)号：US20190016879A1

公开(公告)日：2019-01-17

申请号：US16136328

申请日：2018-09-20

Applicant: AGC Inc.

Inventor： Kazunori SUGIYAMA ,  Hiroaki INOUE ,  Yuuichi OOMORI ,  Hiroyuki HARA

IPC: C08L33/14 ,  C08L101/02 ,  C08L101/08 ,  C08L27/06 ,  C08L27/08 ,  C08L27/16 ,  C08L27/18 ,  C08L71/08 ,  C08K5/19 ,  D06M15/277

Abstract: To provide a water repellent composition whereby a moisture permeable waterproof film is rendered less likely to be peeled from an article treated by the water-repellent composition. The water repellent composition comprises a copolymer (A) having structural units based on a monomer (a) and structural units based on a monomer (b), a polymer (B) having an amino group, an ammonium salt group or an amide group as a pendant group, and an aqueous medium. The monomer (a) is a compound represented by RF-Q-Z—C(O)C(R)═CH2 (wherein RF is a C4-6 perfluoroalkyl group, Q is either a divalent hydrocarbon group containing no fluorine atom or a single bond, Z is —O— or NH—, and R is a hydrogen atom, a methyl group or a chlorine atom).The monomer (b) is a (meth)acrylate having no polyfluoroalkyl group and having a C12-22 alkyl group.