Personal care products
View Patent ↗Personal care products, particularly hair care products, are made herein by mixing (A) a polymer having defined repeat units of a monomer (e.g. α-olefin) maleic anhydride alkyl half-ester or full acid, maleamic acid and maleimide, which is derivatized with an amine, and (B) a compound or polymer having a carboxylic acid functionality. These products exhibit excellent high humidity curl retention properties, as well as an advantageous blend of toughness and cohesiveness, and a strong affinity to natural fibers, when applied to keratin-based fibers, e.g. hair, skin, or textiles, e.g. cotton, wool; and also they are water-soluble and water-resistant.
1. The product of mixing (A), a polymer characterized structurally by repeat units of (a) a monomer-maleic anhydride alkyl half-ester or full acid, (b) maleamic acid, and (c) maleimide, of the formulas:
where:
R, R 1 , R 2 and R 3 are selected from H, alkyl, alkoxy, cycloalkyl, aryl, ester, acid, hydroxy, hydroxyalkyl, amido, fluoro, halo and silyl, and R 4 is H or alkyl; and
R′ is a polyoxyalkylene amine, having the formula:
where R 5 and R 6 are selected from H and alkyl; and n and m are integers from 1–50; and
x, y and z are present, in mole %, of 0–99.9, 0–50 and 0.1–100, respectively;
and (B) a compound or polymer having a carboxylic acid functionality.
2. A product according to claim 1 wherein x=0–50, y=0–5 and z=5–100.
3. A product according to claim 1 wherein X, Y and Z are presenting a mole ratio of 0–10:40–98:1–10.
4. A product according to claim 1 wherein R 5 is CH 3 and R 6 is H.
5. A product according to claim 1 wherein both R 5 and R 6 are CH 3 .
6. A product according to claim 1 wherein n=32 and m=10.
7. A product according to claim 1 wherein, in (a), said monomer is an α-olefin.
8. A product according to claim 1 wherein (B) is a crosslinked carboxylic acid containing polymer.
9. A product according to claim 8 wherein (B) is a crosslinked acrylic acid polymer.
10. A product according to claim 1 wherein (B) is a linear carboxylic acid containing polymer.
11. A product according to claim 1 wherein (B) is an acrylic acid containing polymer.
12. A product according to claim 1 wherein the mole ratio of maleimide in (A) to the carboxylic units in (B) is about 1:1.