Anti-microbial compositions
Anti-microbial compositions comprising certain imidazolium ionic liquids and non-ionic or anionic surfactants and methods of using said compositions in the preservation of personal care and cosmetic applications are provided.
1. An anti-microbial composition comprising a non-ionic or anionic surfactant and an anti-microbial ionic liquid of formula (I):
wherein
R is C 8-18 alkyl;
R′ is C 1-4 alkyl;
n is 1;
X − is an anion;
which anti-microbial compositions are effective against gram positive bacteria, gram negative bacteria, yeasts, molds or fungi.
2. A composition according to claim 1 , wherein R is dodecyl, R′ is methyl and n is 1.
3. A method for preserving personal care preparations containing a non-ionic or anionic surfactant by incorporating an anti-microbial ionic liquid of formula (I)
wherein
R is C 8 C 18 ;
R′ is C 1-4 alkyl;
n is 1;
X − is an anion.
4. A method according to claim 3 , wherein R is C 8-18 alkyl, R′ is C 1-4 alkyl and n is 1.
5. A method according to claim 3 , wherein R is dodecyl, R′ is methyl and n is 1.
6. A method for preserving personal care preparations by incorporating a composition comprising a non-ionic or anionic surfactant and an anti-microbial ionic liquid of formula (1):
wherein
R is C 8-18 alkyl;
R′ is C 1-4 alkyl;
n is 1;
X − is an anion.
7. A method according to claim 6 , wherein R is dodecyl, R′ is methyl and n is 1.
8. Personal care preparations comprising a non-ionic or anionic surfactant and an anti-microbial ionic liquid of formula (1)
wherein
R is C 8-18 alkyl;
R′ is C 1-4 alkyl;
n is 1;
X − is an anion.
9. A preparation according to claim 8 , wherein R is dodecyl, R′ is methyl and n is 1.
10. A preparation according to claim 8 comprising from 0.01 to 15% by weight, based on the total weight of the preparation, of the anti-microbial compound according to formula (1).
11. A composition according to claim 1 , which contains an anionic surfactant.
12. A method according to claim 3 , wherein the personal care preparation contains anionic surfactants.
13. A method according to claim 6 , wherein the composition-contains an anionic surfactant.
14. An anti-microbial composition according to claim 1 , which comprises an anionic surfactant.
15. A method for preserving a personal care preparation according to claim 3 , wherein the personal care preparation comprises an anionic surfactant.
16. A method for preserving personal care preparations according to claim 6 , wherein the composition comprises at least one anionic surfactant.
17. Personal care preparations according to claim 8 which comprise an anionic surfactant.
18. The composition according to claim 1 , wherein
R is octyl, decyl or dodecyl;
R′ is butyl and
the compound of formula (I) is effective against fungi.