Patent ID: 9464384
Filing Date: 2016-10-11
CPC Classification: C08F,C08L,D21H

Claim Text:
1. A water- and oil-resistant agent for paper comprising: (I) a fluorine-containing copolymer comprising repeating units derived from: wherein X is a hydrogen atom, a linear or branched alkyl group having 1 to 21 carbon atoms, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a CFX Y is —O— or —NH— group; Z is an aliphatic group having 1 to 10 carbon atoms, an aromatic or cycloaliphatic group having 6 to 10 carbon atoms, a —CH a —CH a —(CH Rf is a linear or branched fluoroalkyl group having 1 to 6 carbon atoms, and wherein X X R is a C n is an integer from 1 to 90, wherein the polypropylene glycol compound (II) is added after the polymerization of the fluorine-containing copolymer.