Skin cleansing compositions with polyglycerol esters and hydrophobically modified polymers
View Patent ↗The methods and compositions of this invention relate to compositions containing polyglyceryl esters of fatty acids, low molecular weight hydrophobically-modified polymers and anionic and/or amphoteric surfactants having low irritation characteristics in combination with one or more additional characteristics, for example, relatively high clarity, relatively high foaming, and/or combinations thereof, as well as methods of making and using such compositions. These compositions have low pH values and are useful in cleansing the skin.
1. A skin cleansing composition comprising:
(a) a low molecular weight, non-crosslinked, hydrophobically modified linear acrylic copolymer wherein the low molecular weight copolymer has a number average molecular weight of about 100,000 or less;
(b) an ester of a fatty acid and a glycerin polymer, wherein said ester has x glycerin repeat units and a carbon chain length of n,
wherein x is from 8 to 14; and n is from 10 to 18;
(c) at least one surfactant selected from the group consisting of an anionic surfactant or an amphoteric or a mixture thereof wherein said surfactants are present in an amount of from about 2 to about 7 weight percent of said skin cleansing composition.
2. A skin cleansing composition according to claim 1 wherein said total surfactant load, including said anionic surfactant, said amphoteric surfactant and said ester of a fatty acid and a glycerin polymer having the formula PGE-x-n of said skin cleansing composition is not greater than about 15 weight percent of the skin cleansing composition.
3. A skin cleansing composition according to claim 1 wherein the ratio of x:n is from about 1 to about 2.
4. A skin cleansing composition according to claim 1 wherein x is from about 10 to about 12.
5. A skin cleansing composition according to claim 1 wherein x is 10.
6. A skin cleansing composition according to claim 1 wherein n is from about 12 to about 18.
7. A skin cleansing composition according to claim 1 wherein n is from about 12 to about 16.
8. A skin cleansing composition according to claim 1 wherein said anionic surfactant is 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.
9. A skin cleansing composition according to claim 1 wherein said ester of a fatty acid and glycerin polymer is selected from the group consisting of Polyglyceryl-8 Caprylate/Caprate, Polyglyceryl-8 Laurate, Polyglyceryl-9 Laurate, Polyglyceryl-10 Laurate, Polyglyceryl-8 Cocoate, Polyglyceryl-9 Cocoate, Polyglyceryl-10 Cocoate, Polyglyceryl-11 Cocoate, Polyglyceryl-12 Cocoate, Polyglyceryl-8 Myristate, Polyglyceryl-9 Myristate, Polyglyceryl-10 Myristate, Polyglyceryl-11 Myristate, Polyglyceryl-12 Myristate, Polyglyceryl-8 Palmitate, Polyglyceryl-9 Palmitate, Polyglyceryl-10 Palmitate, Polyglyceryl-11 Palmitate, Polyglyceryl-12 Palmitate, Polyglyceryl-10 Oleate, Polyglyceryl-11 Oleate, Polyglyceryl-12 Oleate, Polyglyceryl-10 Stearate, Polyglyceryl-12 Stearate, Polyglyceryl-14 Stearate and Polyglyceryl-14 Oleate and combinations of two or more thereof.
10. A skin cleansing composition according to claim 1 wherein said amphoteric surfactant is selected from the group consisting of amphocarboxylates such as alkylamphoacetates (mono or di); alkyl betaines; amidoalkyl betaines; amidoalkyl sultaines; amphophosphates; phosphorylated imidazolines such as phosphobetaines and pyrophosphobetaines; carboxyalkyl alkyl polyamines; alkylimino-dipropionates; alkylamphoglycinates (mono or di); alkylamphoproprionates (mono or di),); N-alkyl β-aminoproprionic acids; alkylpolyamino carboxylates; and mixtures thereof.
11. A skin cleansing composition according to claim 2 wherein said compositions comprise from about 2 to about 7 weight percent total surfactant.
12. A skin cleansing composition according to claim 11 wherein said compositions comprise from about 1.5 to about 5 weight percent total surfactant.
13. A skin cleansing composition according to claim 1 wherein said composition exhibits a foam volume greater than about 100 ml at 30 s with 900 rpm.
14. A skin cleansing composition according to claim 1 wherein said composition exhibits a foam volume greater than about 160 ml at 160 s with 900 rpm.