Structured surfactant system
An aqueous structured surfactant composition contains an anionic surfactant selected from isethionate surfactants, taurate surfactants, and sarcosinate surfactants, and mixtures thereof, and an electrolyte and is useful in personal care applications.
1 . An aqueous structured surfactant composition, comprising, based on 100 parts by weight of the composition:
(a) from greater than 0 to 40 parts by weight of a first anionic surfactant selected from isethionate surfactants, taurate surfactants, sarcosinate surfactants, and mixtures thereof,
(b) optionally, a second anionic surfactant selected from anionic surfactants other than isethionate surfactants, taurate surfactants, and sarcosinate surfactants,
(c) optionally, one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) optionally, one or more non-ionic surfactants, and
(e) optionally, one or more cationic surfactants,
wherein the total amount of surfactants (a), (b), (c), (d), and (e) is from about 10 to about 40 parts by weight, and
(f) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a), (b), (c), (d) and (e) to provide a structured surfactant composition that comprises a surfactant phase having an ordered liquid crystal structure.
2 . The composition of claim 1 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of a the first anionic surfactant,
(b) from greater than 0 to about 20 parts by weight of a the second anionic surfactant,
(c) from greater than 0 to less than 25 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a), (b), and (c), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
3 . The composition of claim 2 , wherein the composition comprises:
(a) from about 5 to about 25 parts by weight of the first anionic surfactant,
(b) from about 0.1 to about 20 parts by weight of the second anionic surfactant,
(c) 0.5 to about 10 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) from 2 to about 6 parts of the electrolyte.
4 . The composition of claim 3 , wherein the first anionic surfactant comprises a taurate surfactant.
5 . The composition of claim 1 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 20 parts by weight of the second anionic surfactant, and
(c) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a) and (b), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
6 . The composition of claim 1 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 25 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(c) from greater than 0 to about 30 parts by weight of electrolyte, in an amount effective to, in combination with components (a) and (b), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
7 . The composition of claim 1 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from about 10 to about 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with component (a), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
8 . An aqueous personal care composition, comprising, based on 100 parts by weight of the composition:
(a) from greater than 0 to 40 parts by weight of a first anionic surfactant selected from isethionate surfactants, taurate surfactants, sarcosinate surfactants, and mixtures thereof,
(b) optionally, a second anionic surfactant selected from anionic surfactants other than isethionate surfactants, taurate surfactants, and sarcosinate surfactants,
(c) optionally, one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) optionally, one or more non-ionic surfactants, and
(e) optionally, one or more cationic surfactants,
wherein the total amount of surfactants (a), (b), (c), (d), and (e) is from about 10 to about 40 parts by weight, and
(f) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a), (b), (c), (d), and (e), provide a structured surfactant composition that comprises a surfactant phase having an ordered liquid crystal structure, and
(g) greater than 0 parts by weight of one or more personal care benefit agents.
9 . The composition of claim 8 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of the first anionic surfactant,
(b) from greater than 0 to about 20 parts by weight of the second anionic surfactant,
(c) from greater than 0 to less than 25 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a), (b), and (c), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
10 . The composition of claim 8 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 20 parts by weight of the second anionic surfactant, and
(c) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with components (a) and (b), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
11 . The composition of claim 8 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from greater than 0 to less than 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 25 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(c) from greater than 0 to about 30 parts by weight of electrolyte, in an amount effective to, in combination with components (a) and (b), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
12 . The composition of claim 8 , wherein the composition comprises, based on 100 parts by weight of the composition:
(a) from about 10 to about 40 parts by weight of the first anionic surfactant, and
(b) from greater than 0 to about 30 parts by weight of electrolyte in an amount effective to, in combination with component (a) provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals.
13 . The composition of claim 8 , wherein the composition is a skin cleansing composition and personal care benefit agent comprises one or more hydrocolloid polymers, one or more skin conditioning oils, or one or more hydrocolloid polymers and one or more skin conditioning oils.
14 . The composition of claim 13 , wherein the composition comprises, based on 100 parts by weight of the composition, up to about 2 parts by weight of a benefit agent selected from hydrocolloid polymers and mixtures thereof.
15 . The composition of claim 13 , wherein the composition comprises, based on 100 parts by weight of the composition, from about 1 part by weight to about 40 parts by weight, of a benefit agent selected from skin conditioning oils and mixtures thereof.
16 . The composition of claim 13 , wherein the composition comprises, based on 100 parts by weight of the composition, up to about 2 parts by weight of a benefit agent selected from hydrocolloid polymers and mixtures thereof, and further comprises from about 1 parts by weight to about 40 parts by weight of a benefit agent selected from skin conditioning oils and mixtures thereof.
17 . The composition of claim 8 , wherein the composition is a shampoo composition and the personal care benefit agent comprises one or more hair conditioning oils, one or more hair benefit agents other than a hair conditioning oil, or one or more hair conditioning oils one and more hair benefit agents other than a hair conditioning oil.
18 . The composition of claim 17 , wherein the composition comprises, based on 100 parts by weight of the composition, from about 0.1 parts by weight to about 20 parts by weight, of a benefit agent selected from hair conditioning oils and mixtures thereof.
19 . The composition of claim 17 , wherein the composition comprises, based on 100 parts by weight of the composition, from about 0.01 parts by weight to about 5 parts by weight of benefit agent selected from hair benefit agents other than hair conditioning oils and mixtures thereof.
20 . The composition of claim 17 , wherein the composition comprises, based on 100 parts by weight of the composition, from about 0.1 parts by weight to about 20 parts by weight of a benefit agent selected from hair conditioning oils and mixtures thereof, further comprises from about 0.01 parts by weight to about 5 parts by weight of a benefit agent selected from hair benefit agents other than a hair conditioning oils and mixtures thereof.
21 . A personal care composition comprising, based on 100 parts by weight of the composition:
(a) from about 5 to about 25 parts by weight of a first anionic surfactant selected from isethionate surfactants, taurate surfactants, sarcosinate surfactants, and mixtures thereof,
(b) from about 0.1 to about 20 parts by weight of a second anionic surfactant selected from anionic surfactants other than isethionate surfactants, taurate surfactants, and sarcosinate surfactants,
(c) 0.5 to about 10 parts by weight of one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof, and
(d) from 2 to about 6 parts by weight of electrolyte in an amount effective to, in combination with components (a), (b), and (c), provide a structured surfactant composition having an opaque visual appearance and exhibiting a yield strength of greater than 0 Pascals,
(e) up to about 2 parts by weight of a benefit agent selected from hydrocolloid polymers and mixtures thereof, and
(f) from about 1 parts by weight to about 40 parts by weight, of a benefit agent selected from skin conditioning oils and mixtures thereof.
22 . The composition of claim 21 , wherein the first anionic surfactant is a mixture of an isethionate surfactant and a taurate surfactant.
23 . The composition of claim 21 , wherein the second anionic surfactant is a salt of tridecyl sulfate.
24 . The composition of claim 21 , wherein the one or more surfactants selected from amphoteric surfactants, zwitterionic surfactants, and mixtures thereof comprises a salt of lauroamphoacetate or lauroamphodiacetate.
25 . The composition of claim 25 , wherein the benefit agent selected from hydrocolloid polymers and mixtures thereof comprises a cationic derivative of a polysaccharide hydrocolloid polymer.