Personal care composition
View Patent ↗A personal care composition comprising a cationically modified cellulose ether, wherein the cellulose ether comprises from 0.5 to 4 moles of an ether substituent per mole of anhydroglucose repeat unit and the cellulose ether further substituted with a cationic substituent of the formula (I) wherein R 1 , R 2 and R 3 each independently are CH 3 or C 2 H 5 , R 4 is CH 2 —CHOH—CH 2 or CH 2 CH 2 , A z− is an anion, and z is 1, 2 or 3, and the cellulose ether comprises from 1.15 to 1.44 percent of cationic nitrogen, based on the total weight of the cellulose ether. The cationically modified cellulose ethers which comprise from 6,000 to 15,000 anhydroglucose repeat units are novel.
1. A personal care composition comprising:
a water-insoluble active ingredient, and
a cationically modified hydroxyethyl cellulose, wherein
the hydroxyethyl cellulose comprises from 1.5 to 2.5 moles of an hydroxyethyl substituent per mole of anhydroglucose repeat unit, and
the hydroxyethyl cellulose is further substituted with a cationic substituent of the formula I
wherein
R 1 , R 2 and R 3 each independently are CH 3 or C 2 H 5 ,
R 4 is CH 2 —CHOH—CH 2 — or CH 2 CH 2 —,
A z− is an anion, and z is 1, 2 or 3, and
the hydroxyethyl cellulose comprises from 1.15 to 1.44 percent of cationic nitrogen, based on the total weight of the hydroxyethyl cellulose, and
wherein the hydroxyethyl cellulose has 6,000 to 15,000 anhydroglucose repeat units and is not substituted with hydrophobic alkyl or arylalkyl group having 8 to 24 carbon atoms.
2. The personal care composition of claim 1 wherein in the cationic substituent of the formula I R 1 , R 2 and R 3 are CH 3 , R 4 is CH 2 —CHOH—CH 2 —, A z− is a halide ion and z is 1.
3. The personal care composition of claim 1 wherein the cationically modified hydroxyethyl cellulose comprises from 7,000 to 10,000 anhydroglucose repeat units.
4. The personal care composition of claim 1 in the form of a hair or skin care composition.
5. The personal care composition of claim 1 wherein the water-insoluble active ingredient is a silicone oil, petrolatum or a plant oil.
6. The personal care composition of claim 5 wherein the plant oil is sunflower seed oil or soy bean oil.
7. A personal care composition comprising:
a cationically modified hydroxyethyl cellulose wherein
the hydroxyethyl cellulose comprises from 1.5 to 2.5 moles of a hydroxyethyl substituent per mole of anhydroglucose repean unit, and has 7,000 to 10,000 anhydroglucose repeat units, and
the hydroxyethyl cellulose is further substituted with cationic substituent of formula I
wherein
R 1 , R 2 and R 3 each are CH 3 ,
R 4 is CH 2 —CHOH—CH 2 —,
A z− is a halide, and z is 1, and
the hydroxyethyl cellulose comprises from 1.20 to 1.40 percent of cationic nitrogen, based on the total weight of the hydroxyethyl cellulose, wherein the hydroxyethyl cellulose is not substituted with a hydrophobic alkyl or arylalkyl group having 8 to 24 carbon atoms, and
a water-insoluble active ingredient selected from a silicone oil or a plant oil.
8. The personal care composition of claim 7 , wherein the plant oil is sunflower seed oil or soy bean oil.