Patent ID: 6274060
Filing Date: 2001-08-14
Classification: C08F,D06M

Abstract:
A water- and oil-repellent comprising a copolymer comprising:(a) a fluoroalkyl group-containing monomer having a melting point of 60 to 80.degree. C. in the state of a homopolymer, wherein the fluoroalkyl group-containing monomer (a) is a compound represented by the general formula:R.sub.f --R.sup.1 --X--R.sup.2 C.dbd.CH.sub.2wherein R.sub.f is a C.sub.3 to C.sub.20 straight-chain fluoroalkyl group, R.sup.1 is a C.sub.1 to C.sub.10 straight-chain or branched alkylene group, R.sup.2 is a hydrogen atom or a methyl group, and X is --O--C(.dbd.O)-- or SO.sub.2 --N(A.sup.1)--A.sup.2 -- in which A.sup.1 is a C.sub.1 to C.sub.4 alkyl group and A.sup.2 is a direct bond or --A.sup.3 --O--C(.dbd.O)-- in which A.sup.3 is a C.sub.1 to C.sub.4 alkylene group; and(b) a hydrophilic group-containing monomer, wherein the hydrophilic group-containing monomer (b) is a compound represented by the general formula:CH.sub.2.dbd.CR.sup.3 COO--(R.sup.4 O).sub.n --R.sup.5wherein R.sup.3 and R.sup.5 represent a hydrogen atom or a methyl group; R.sup.4 represents a C.sub.2 to C.sub.6 alkylene group; and n is an integer of 1 to 50; andwherein when the fluoroalkyl group-containing monomer (a) is CF.sub.3 CF.sub.2 (CF.sub.2 CF.sub.2).sub.3 CH.sub.2 CH.sub.2 OCOCH.dbd.CH.sub.2, the hydrophilic group-containing monomer (b) is not CH.sub.2.dbd.C(CH.sub.3)COO(CH.sub.2 CH.sub.2 O).sub.9 CH.sub.3.