Personal care composition for a keratin substrate comprising conditioning and/or styling polymer
View Patent ↗A personal care conditioning and/or styling composition for a keratin substrate comprising: (A) at least one conditioning and/or styling ter/tetra polymer obtained by polymerizing: (i) about 50 wt. % to 97 wt. % of at least one cationic or pseudo-cationic monomer selected from the group consisting of diallyl dimethyl ammonium chloride (DADMAC), Hydroxyethyl-pyrrolidone-methacrylate (MO6), and/or Vinylpyrrolidone (VP); (ii) about 1 wt. % to 30 wt. % of at least one anionic monomer selected from the group consisting of (a) acrylic acid (AA), (b) acrylamido methylpropyl sulfonate (AMPS), and/or (c) sodium methyl allyl sulfonate (SMAS); and (iii) about 0.1 wt. % to 20 wt. % of at least one hydrophobic monomer selected from the group consisting of (a) polyoxyethylene (PEG)-18-behenylether-methacrylate (BEM) (b) Lauryl-ethoxylated-methacrylate (LEM), (c) stearyl acrylate (SA), (d) Streath-10-allyl-ether, and/or (e) Vinylcaprolactam (V-cap); and wherein said ter/tetra polymer has a cationic degree of substitution (Cat-DS) of greater than about 0.001 units, and wherein the cationic charge density is in the range of about 1 meq/g to about 6.5 meq/g; (B) at least one cosmetically acceptable excipient; and (C) optionally, at least one effective amount of personal care active ingredient. Also, disclosed is a process of preparing said ter/tetra polymer, and its method of use.
1. A conditioning and/or styling copolymer for a keratin substrate obtained from polymerizing:
i. about 50 wt. % to 97 wt. % of diallyl dimethyl ammonium chloride (DADMAC);
ii. about 1 wt. % to 20 wt. % of acrylic acid (AA);
iii. about 0.1 wt. % to 20 wt. % of polyoxyethylene (PEG)-18-behenylether-methacrylate (BEM); and
iv. about 0.1 wt. % to 10 wt. % of vinylcaprolactam (V-cap);
and wherein said co-polymer is a tetrapolymer having a cationic degree of substitution (Cat-DS) of greater than about 0.001 units, and wherein the cationic charge density is in the range of about 1 meq/g to about 6.5 meq/g.
2. The copolymer according to claim 1 , wherein said keratin substrate is hair or skin.
3. The copolymer according to claim 1 , wherein the average molecular weight of said tetra polymer is in the range of from about 75,000 to 1000,000 g/mol as determined by gel permeation chromatography.
4. The copolymer according to claim 1 , wherein the average molecular weight of said tetra polymer ranges from about 120,000 to 500,000 g/mol as determined by gel permeation chromatography.
5. A process for preparing a conditioning and/or styling copolymer comprising polymerizing:
i. about 50 wt. % to 97 wt. % of diallyl dimethyl ammonium chloride (DADMAC);
ii. about 1 wt. % to 20 wt. % of acrylic acid (AA);
iii. about 0.1 wt. % to 20 wt. % of polyoxyethylene (PEG)-18-behenylether methacrylate (BEM); and
iv. about 0.1 wt. % to 10 wt. % of vinylcaprolactam (V-cap);
and wherein the prepared copolymer has a cationic degree of substitution (Cat-DS) of greater than about 0.001 units, and wherein the cationic charge density is in the range of about 1 meq/g to about 6.5 meq/g.
6. The process according to claim 5 , wherein the copolymer is prepared by radical polymerization, emulsion polymerization, ionic chain polymerization, bulk polymerization, suspension polymerization or precipitation polymerization.
7. The process according to claim 5 , wherein the average molecular weight of the copolymer is in the range of from about 75,000 to 1000,000 g/mol as determined by gel permeation chromatography.
8. A method for washing or caring a keratin substrate comprising applying an effective amount of a personal care composition, wherein the composition comprises the conditioning and/or styling copolymer of claim 1 .
9. A method of protecting dyed hair color from fading or wash-out during exposure to air and/or shampooing which comprises contacting/treating said dyed hair with an effective amount a personal care composition, wherein the composition comprises the conditioning and/or styling of claim 1 .