Fluorine-containing copolymer, paper processing agent, and coating film-forming agent for cosmetic preparation

A fluorine-containing polymer free from a monomer having an amino group, comprising

• (a) a fluorine-containing monomer of the general formula:
• CH2═C(—X)—C(═O)—Y—[—(CH2)m—Z—]p—(CH2)—Rf (I)
• wherein X is a hydrogen atom, a methyl group, a fluorine atom, a chlorine atom, a bromine atom, a iodine atom, a CFX1X2 group (wherein X1 and X2 is a hydrogen atom, a fluorine atom or a chlorine atom), a cyano group, a linear or branched fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted benzyl group, or a substituted or unsubstituted phenyl group;
• Y is —O— or —NH—;
• Z is —S— or —SO2—;
• Rf is a fluoroalkyl group having 1 to 6 carbon atoms;
• m is from 1 to 10, n is from 0 to 10, and p is 0 or 1,
• (b) an alkoxy group-containing monomer of the general formula:
• CH2═C(X′)—C(═O)—O—(RO)q—H (II)
• wherein X′ is a hydrogen atom or a methyl group;
• R is an alkylene group having 2 to 4 carbon atoms, in which a part or all of hydrogen atoms may be substituted with hydroxyl groups;
• and
• q is an integer of 2-50, and
• (c) a crosslinkable monomer which is di(meth)acrylate of the general formula:
• CH2═C(X″)—C(═O)—O—(R″O)r—C(═O)—C(X″)═CH2 (III)
• wherein each of X″ is a hydrogen atom or a methyl group;
• R″ is an alkylene group having 2 to 10 carbon atoms, in which a part or all of hydrogen atoms may be substituted with hydroxyl groups;
• and
• r is an integer of 1 to 50.