IP Library › Granted Patent US 8,568,701

Granted Patent B2

US 8,568,701 · App. 13/312,211 · Granted Oct 29, 2013

Cationic synthetic polymers with improved solubility and performance in phosphate surfactant-based systems and use in personal care and household applications

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Quick Facts

Patent No.: US 8,568,701
App. No.: 13/312,211
Granted: Oct 29, 2013
Kind: B2

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Abstract

The present invention is related to surfactant-based formulations comprising the polyelectrolytes and blends of such polyelectrolytes with non-cellulosic cationic polysaccharide polymers wherein the surfactant is a phosphate ester. The surfactant-based formulations exhibit improved clarity of the resulting formulations, their improved conditioning of keratin substrates, textile substrates, and hard-surface substrates, their improved deposition of dispersed phase materials onto keratin substrates, textile substrates, and hard-surface substrates, their improved lather performance, and their improved rheology in applications such as personal care and household care products and textile applications.

Claims (48)

1. A cationic polyelectrolyte composition comprising:

1) a solid cationic synthetic water soluble polyelectrolyte comprising a polymer of (meth)acrylamide and one or more of i) a cationic (meth)acrylamide monomer, ii) a cationic (meth)acrylic acid monomer, and iii) hydrolysis stable cationic monomers wherein said polyelectrolyte is formed by adiabatic gel polymerization; and has a weight average molecular weight less than 2 million, a charge density of 0.001 meq/g to 4 meq/g, and a level of unreacted acrylamide monomer less than 50 ppm;

2) a phosphate ester surfactant; and

3) a solvent,

wherein said polyelectrolyte is one of acrylamidopropyltrimethyl ammonium chloride/acrylamide copolymer or acrylamidopropyltrimethyl ammonium chloride/acrylamididoethyltrimethyl ammonium chloride/acrylamide terpolymer.

2. The composition claimed in claim 1 wherein said phosphate ester surfactant is a phosphate ester of a C 6 -C 32 fatty alcohol.

3. The composition claimed in claim 2 wherein said phosphate ester is a blend of esters formed from alkoxylated and nonalkoxylated fatty alcohols.

4. The composition claimed in claim 2 further comprising at least one active personal care ingredient or benefit agent.

5. The composition claimed in claim 4 further comprising a noncellulosic cationic polysaccharide.

6. The composition claimed in claim 5 wherein the polysaccharide is selected from the group consisting of guar, locust bean, tara, honey locust, cassia gum, flame tree, xanthum gum, gellan gum, wellan gum, rhamsan gum; konjac, mannan, gum acacia, soy polysaccharide, xylofructose gums, alginate, and tamarind gum.

7. The composition claimed in claim 4 wherein said active personal care ingredient or benefit agent comprises a conditioning agent.

8. The composition claimed in claim 1 wherein said phosphate ester surfactant has the structure shown in formula 1, formula 2 or a combination thereof:

where:

M and N are hydrogen atoms, alkali metal atoms, alkaline earth atoms, amine, alkanol amine or ammonium;

R 1 , R 2 , R 3 , R 4 , R 5 , R 6 are hydrogen, methyl, ethyl, propyl or butyl groups;

R 7 , R 8 and R 9 are alkyl, alkenyl, alkyl aryl or alkenyl aryl groups, fluorinated alkyl, alkenyl, alkyl aryl or alkenyl aryl groups, or organosilicone groups; and

u, v, w, x, y and z range from 0-20.

9. The composition claimed in claim 8 wherein the phosphate ester surfactant is a mixture of mono- and di-esters wherein

u, v, x, z, w, and y are between 0 and 5;

R 2 , R 4 and R 6 are H; and

R 7 , R 8 and R 9 are an average value of C 18 .

10. The composition claimed in claim 1 comprising 0.01 to 50% by weight of the surfactant.

11. A cationic polyelectrolyte composition comprising:

1) a solid cationic synthetic water soluble polyelectrolyte comprising a polymer of (meth)acrylamide and one or more of i) a cationic (meth)acrylamide monomer, ii) a cationic (meth)acrylic acid monomer, and iii) hydrolysis stable cationic monomers wherein said polyelectrolyte is formed from adiabatic gel polymerization, and has a level of unreacted acrylamide less than 50 ppm, a weight average molecular weight less than 2 million and a charge density of 0.001 meq/g to 4 meq/g;

2) a phosphate ester surfactant;

3) a solvent; and

4) a noncellulosic cationic polysaccharide,

12. The cationic polyelectrolyte composition of claim 11 wherein the phosphate ester surfactant comprises oleyl phosphate having from 0 to 5 moles of ethoxylation between the oleyl group and the phosphate group.

13. The composition claimed in claim 12 further comprising at least one active personal care ingredient or benefit agent.

14. The composition claimed in claim 13 wherein said active personal care ingredient or benefit agent is one or more of silicone oil, jojoba oil, meadowfoam seed oil, seed oils, vegetable oils, glycerin, emollients, or moisturizing agent.

15. The composition claimed in claim 11 comprising 0.01 to 30% by weight of the polyelectrolyte.

16. The composition claimed in claim 15 having a ratio of synthetic water soluble polyelectrolyte to polysaccharide of 5:95 to 95:5 by weight.

17. The composition claimed in claim 15 having a ratio of synthetic water soluble polyelectrolyte to polysaccharide of 0.01:99.99 to 99.99:0.01 by weight.

18. The composition claimed in claim 11 comprising 0.01 to 50% by weight of the surfactant.

19. A method of depositing an oil onto a surface comprising applying a composition comprising:

1) a cationic synthetic water soluble polyelectrolyte comprising a polymer of (meth)acrylamide and one or more of i) a cationic (meth)acrylamide monomer, and ii) a cationic (meth)acrylic acid monomer, and iii) hydrolysis stable cationic monomers wherein said polyelectrolyte has a weight average molecular weight less than 2 million and a charge density of 0.001 meq/g to 4 meq/g; wherein said cationic synthetic water soluble polyelectrolyte is formed by adiabatic gel polymerization and is subsequently milled and has a level of unreacted acrylamide of less than 50 ppm;

2) a phosphate ester surfactant;

3) a solvent;

4) an active personal care ingredient or benefit agent and

5) a cationic polysaccharide onto said surface;

diluting said composition with water to form a diluted solution on said surface; and

rinsing said diluted solution from said surface.

20. The method claimed in claim 19 wherein said phosphate ester surfactant is oleyl phosphate, containing 0 to 5 moles of ethoxylation.

21. The method claimed in claim 19 wherein said surface is hair, skin, wool or other keratin or protein surfaces.

22. The method of claim 19 wherein said surface is a fabric or textile surface.

23. The method of claim 19 wherein said surface is a hard surface.

Assignments (6)

RELEASE OF SECURITY INTEREST Recorded Jan 10, 2020