Polyetheramide compositions
View Patent ↗Ethanol soluble or dispersible polyetheramide polymers that have a percent elongation to break of less than 100%. The polymers are formed from a reaction mixture comprising at least one or more poly(alkyleneoxy) diamines and one or more diacids. The reaction mixture can optionally include one or more aliphatic diamines in addition to the one or more poly(alkyleneoxy) diamines. The polyetheramide polymers have application in personal care compositions such as hair fixative compositions, for example, hair spray formulations.
1. A personal care composition comprising a polyetheramide polymer comprising the following structure
wherein R is aliphatic or aromatic; R′ is hydrogen or CH 3 ; R″ is aliphatic, or aromatic; x is 2 to 34; y is 1 to 250; and z is 0 to 350;
and a solvent,
wherein the polymer forms low viscosity solutions and or dispersions of less than about 35 centipoises in the solvent at about 6 weight percent polymer at about 25° C., and
wherein the solvent is an alcohol or alcohol-water blend.
2. The personal care composition according to claim 1 wherein the polymer does not have a 100% modulus between about 8 and 40 kgf/cm 2 .
3. The personal care composition according to claim 1 wherein the composition is a hair fixative composition and the polymer provides curl retention of greater than about 30 percent after 2 hours at 21° C. and 90% humidity.
4. The personal care composition according to claim 1 wherein the composition is a hair fixative composition and the polymer provides a hair swatch stiffness of from about 0.005 to about 0.020 joules.
5. The personal care composition according to claim 3 wherein the hair fixative composition is a hair spray composition.
6. The personal care composition according to claim 1 wherein the alcohol is ethanol.
7. A process for preparing the personal care composition of claim 1 comprising:
reacting a mixture of from about 5 to about 85 weight percent of one or more poly(alkyleneoxy) diamines with from about 15 to about 95 weight percent of one or more diacids, weight percent based upon total weight percent of the polymer, and
dissolving or dispersing the resultant polyetheramide polymer in the solvent,
wherein a 6 weight percent solution or dispersion of the polyetheramide polymer in alcohol at about 25° C. has a viscosity of less than about 35 centipoise.
8. The process according to claim 7 wherein the reaction step further includes the reaction of from about 5 to about 50 weight percent of one or more diamines in addition to the one or more poly(alkyleneoxy) diamines.
9. The process according to claim 7 further comprising dissolving or dispersing other additives in the solvent in addition to the polymer.
10. The process according to claim 9 wherein the other additives comprise plasticizers, actives, neutralizers, colors or fragrances.
11. The process according to claim 7 wherein the reaction mixture does not have any mono-functional reactants that would react with either the amine or the acid groups.
12. The polyetheramide polymer of claim 1 wherein R is a linear aliphatic group.
13. The polyetheramide polymer of claim 12 wherein the linear aliphatic group is selected from the group consisting of 1,4-butane, 1,6-hexane acid, 1,7-heptane, 1,8-octane, 1,9-nonane, 1,10-decane, 1,12dodecane, 1,13-tridecane and 1,14-tetradecane.
14. The polyetheramide polymers of claim 1 wherein R is an aromatic group.
15. The polyetheramide polymer of claim 1 , wherein the polymer is formed from an aromatic diacid selected from the group consisting of phthalic, isophthalic and terephthalic acid.
16. The solvent of claim 1 wherein the alcohol-water blend is an ethanol-water mix and the ethanol is present from about 50 to about 70 percent.
17. The solvent of claim 1 wherein the alcohol-water blend is an ethanol-water mix and the ethanol is present from about 55 to about 65 percent.