Conditioning/styling tetrapolymers
View Patent ↗What is described herein are conditioning/styling tetrapolymers of vinyl caprolactam (VCL), vinylpyrrolidone (VP), dimethylaminopropyl methacrylamide (DMAPMA) and C 8 -C 24 alkyl quaternized dimethylaminopropyl (meth)acrylamide or methacrylic acid quaternized monomers (QDMAPMA), in a defined compositional range. Hair and skin care compositions which include these tetrapolymers exhibit advantageous low tackiness and high humidity resistance.
1. A hydrophobically-modified cationic tetrapolymer consisting essentially of the following monomers in wt. %;
where:
P is O or NR 2 ; R 1 , R 2 , R 3 , R 4 are independently H or C 1 -C 5 alkyl; R 5 is C 2 -C 16 alkylene; and
where:
P is O or NR 2 ; R 1 , R 2 , R 3 , R 4 are independently H or C 1 -C 5 alkyl; R 5 is a C 2 -C 16 alkylene; R 6 is C 8 -C 24 alkyl; and M is a halide, tosylate or phosphate anion.
2. A tetrapolymer according to claim 1 wherein:
(C) is dimethylaminopropyl methacrylamide, and
(D) is a C 8 -C 18 alkyl quaternized derivative of an acrylamide or acrylic acid.
3. A tetrapolymer according to claim 2 wherein (A) is about 55-75%; (B) is about 20-40%; (C) is about 0.1-5%; and (D) is about 0.5-10%.
4. A tetrapolymer according to claim 2 wherein (D) is a C 12 alkyl quaternized monomer.
5. A tetrapolymer according to claim 1 wherein the weight average molecular weight is 50,000 to 400,000.
6. A tetrapolymer according to claim 5 wherein said molecular weight is 100,000 to 250,000.
7. A tetrapolymer according to claim 2 which is water soluble or water dispersible.
8. A tetrapolymer according to claim 1 which forms a clear, humidity resistant, hydrophobic film when cast upon a support surface.
9. A tetrapolymer according to claim 1 which is surface active and hydrolytically stable.
10. A tetrapolymer according to claim 1 which is a homogeneous tetrapolymer.
11. A tetrapolymer according to claim 1 which (C) is an N-oxide derivative.
12. A cosmetic composition including about 0.1 to 10% by weight of the tetrapolymer of claim 1 .
13. A cosmetic composition according to claim 12 which is a hair or skin care product.
14. A cosmetic composition according to claim 12 which is a skin tightening product.
15. A method of making the tetrapolymer of claim 1 which comprises polymerizing said monomers in an alcohol-water solvent mixture.
16. A method according to claim 15 wherein said solvent mixture is 10-30 wt % ethanol and 70-90 wt % water.