Cosmetic
A cosmetic is characterized by containing a polymer which is produced by polymerizing a fluorine atom-containing monomer represented by formula (I) (wherein R 1 represents a hydrogen atom or a methyl group; R 2 represents a hydrogen atom or a fluorine atom; m is an integer of 0 or 1 to 4; and n is an integer of 1 to 12), (B) a betaine monomer represented by formula (II) (wherein R 3 represents a hydrogen atom or a methyl group; R 4 and R 5 independently represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; p represents an integer of 1 to 4: and q represents an integer of 1 to 4) and (C) a monomer component containing an alkyl (meth)acrylate represented by formula (III) (wherein R 6 represents a hydrogen atom or a methyl group and R 7 represents an alkyl group having 8 to 22 carbon atoms) with one another.
1. A cosmetic comprising a polymer formed by a polymerization of a monomer component comprising:
(A) a fluorine atom-containing monomer represented by the formula (I):
wherein R 1 is hydrogen atom or methyl group, R 2 is hydrogen atom or fluorine atom, m is 0 or an integer of 1 to 4, and n is an integer of 1 to 12;
(B) a betaine monomer represented by the formula (II):
wherein R 3 is hydrogen atom or methyl group, each of R 4 and R 5 is independently hydrogen atom or an alkyl group having 1 to 4 carbon atoms, p is an integer of 1 to 4, and q is an integer of 1 to 4; and
(C) an alkyl (meth)acrylate represented by the formula (III):
wherein R 6 is hydrogen atom or methyl group, and R 7 is an alkyl group having 8 to 22 carbon atoms.
2. The cosmetic according to claim 1 , wherein the monomer component further comprises a monomer having a sulfonic acid group or a sulfonate group.
3. The cosmetic according to claim 1 , wherein the monomer component further comprises a cross-linking agent represented by the formula (IV):
wherein each of R 8 and R 9 is independently hydrogen atom or methyl group, R 10 is an alkylene group having 2 or 3 carbon atoms, and r is an integer of 1 to 40.