Low-irritation compositions and methods of making the same
View Patent ↗Provided are compositions comprising low molecular weight polymeric materials and surfactants having reduced irritation associated therewith, methods of reducing the irritation associated with a personal care composition comprising an anionic and/or amphoteric surfactant, the methods comprising combining a low molecular weight polymeric material capable of binding a surfactant thereto with an anionic surfactant to produce a reduced irritation personal care composition, and methods of using such compositions to cleanse the hair or skin with reduced irritation.
1. A method of reducing the irritation associated with a personal care composition comprising combining a low molecular weight polymeric material selected from the group consisting of polysaccharide polymers derived from starch, inulin, guar, xanthan, carragenan, chitosan, pectin, or schizophyllan, such polymers having a molecular weight of from about 3,500 to about 500,000 g/mol, and an alternating octadecene/maleic anhydride copolymer having a molecular weight of from about 20,000 to about 25,000 and capable of binding a surfactant thereto, with at least one surfactant selected from the group consisting of anionic surfactants in an amount of from about 0.1 to about 12.5 weight % active surfactant in composition, amphoteric surfactants, and combinations of two or more thereof.
2. The method of claim 1 wherein said low molecular weight polymeric material is a hydrophobically-modified polysaccharide polymer derived from starch, inulin, guar, xanthan, carragenan, chitosan, pectin, or schizophyllan that has a molecular weight of from about 3,500 to about 100,000 g/mol.
3. The method of claim 1 wherein said low molecular weight polymeric material and surfactant exhibit a C 90 value of greater than 250 mg/L.
4. The method of claim 1 wherein said low molecular weight polymeric material and surfactant exhibit a C 90 value of about 300 mg/L or greater.
5. The method of claim 1 wherein said low molecular weight polymeric material and surfactant exhibit a C 90 value of about 450 mg/L or greater.
6. The method of claim 1 wherein said reduced irritation composition has a Delta CMC of at least about 80.
7. The method of claim 1 wherein said reduced irritation composition has a Delta CMC of at least about 300.
8. The method of claim 1 wherein said reduced irritation composition has a TEP of about 1.5 or greater.
9. The method of claim 1 wherein said reduced irritation composition has a TEP of about 2 or greater.
10. The method of claim 1 wherein said reduced irritation composition has a TEP of about 3 or greater.
11. The method of claim 1 wherein polysaccharide polymer is selected from the group consisting of hydrophobically-modified starches, hydrophobically-modified inulins and combinations of two or more thereof.
12. The method of claim 1 wherein said low molecular weight polymeric material is an alternating octadecene/maleic anhydride copolymer, having a molecular weight of from about 20,000 to about 25,000.
13. The method of claim 1 wherein the low molecular weight polymeric material is a hydrophobically-modified inulin polysaccharide.
14. The method of claim 1 wherein said at least one anionic surfactant comprises at least one surfactant selected from the group consisting of sodium trideceth sulfate, sodium laureth sulfate, and combinations thereof.
15. The method of claim 1 wherein said at least one surfactant comprises at least one amphoteric surfactant.
16. The method of claim 15 wherein said at least one amphoteric surfactant comprises a betaine.
17. A method of reducing the irritation associated with a personal care composition comprising combining a low molecular weight polymeric material selected from the group consisting of polysaccharide polymers derived from starch, inulin, guar, xanthan, carragenan, chitosan, pectin, or schizophyllan, such polymers having a molecular weight of from about 3,500 to about 500,000 g/mol, and an alternating octadecene/maleic anhydride copolymer having a molecular weight of from about 20,000 to about 25,000 and capable of binding a surfactant thereto, with at least one anionic surfactant selected from the group consisting of alkyl sulfates, alkyl ether sulfates, alkyl monoglyceryl ether sulfates, alkyl sulfonates, alkylaryl sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl sulfosuccinamates, alkyl amidosulfosuccinates, alkyl carboxylates, alkyl amidoethercarboxylates, alkyl succinates, fatty acyl sarcosinates, fatty acyl amino acids, fatty acyl taurates, fatty alkyl sulfoacetates, alkyl phosphates, and mixtures of two or more thereof to produce a reduced irritation personal care composition.
18. The method of claim 17 wherein said low molecular weight polymeric material is a hydrophobically-modified polysaccharide polymer derived from starch, inulin, guar xanthan, carragenan, chitosan, pectin, or schizophyllan that has a molecular weight of from about 3,500 to about 100,000 g/mol.
19. The method of claim 17 wherein said low molecular weight polymeric material is a hydrophobically-modified inulin polysaccharide or an alternating octadecene/maleic anhydride copolymer, having a molecular weight of from about 20,000 to about 25,000.
20. The method of claim 17 wherein said at least one anionic surfactant comprises at least one surfactant selected from the group consisting of sodium trideceth sulfate, sodium laureth sulfate, and combinations thereof.
21. The method of claim 17 wherein said composition further comprises at least one amphoteric surfactant.
22. The method of claim 17 wherein said reduced irritation composition has a Delta CMC of at least about 80.
23. A method of reducing the irritation associated with a personal care composition comprising combining a low molecular weight polymeric material selected from the group consisting of polysaccharide polymers derived from starch, inulin, guar, xanthan, carragenan, chitosan, pectin, or schizophyllan, such polymers having a molecular weight of from about 3,500 to about 100,000 g/mol, and an alternating octadecene/maleic anhydride copolymer having a molecular weight of from about 20,000 to about 25,000 and capable of binding a surfactant thereto, with at least one amphoteric surfactant.
24. The method of claim 23 wherein said low molecular weight polymeric material is a hydrophobically-modified polysaccharide polymer derived from starch, inulin, guar xanthan, carragenan, chitosan, pectin, or schizophyllan that has a molecular weight of from about 3,500 to about 100,000 g/mol.
25. The method of claim 23 wherein said low molecular weight polymeric material is a hydrophobically-modified inulin polysaccharide or an alternating octadecene/maleic anhydride copolymer, having a molecular weight of from about 20,000 to about 25,000.
26. The method of claim 23 wherein said at least one amphoteric surfactant comprises a betaine.
27. The method of claim 23 wherein said composition further comprises at least one anionic surfactant.
28. The method of claim 27 wherein said at least one anionic surfactant comprises at least one surfactant selected from the group consisting of sodium trideceth sulfate, sodium laureth sulfate, and combinations thereof.
29. The method of claim 23 wherein said reduced irritation composition has a Delta CMC of at least about 80.