Cleaning compositions and emulsions or microemulsions employing extended chain nonionic surfactants
Synergistic combinations of extended chain surfactants and co-surfactants, emulsions or microemulsions and cleaning compositions incorporating the same are provided. In certain embodiments a surfactant system is disclosed which includes extended nonionic surfactants, and a linker surfactant. This system forms stable emulsions or microemulsions with oils, including non-trans fats and fatty acids and these emulsions or microemulsions are stable, irreversible and can be created at low temperature. The cleaning compositions may include the surfactant system alone, a stable emulsion or microemulsion with oil and the surfactant system, a pre-spotter or other pre-treatment or soft surface and hard surface cleaning compositions comprising the surfactant combination.
1. A surfactant system for forming stable emulsions or microemulsions with oils comprising:
an extended chain nonionic surfactant having an intermediate polarity linking chain between a lipophilic segment and a hydrophilic segment of said surfactant, wherein said linking chain is selected from the group consisting of (PO) x ,(EO) x ,(PO) x (EO) x and combinations thereof, wherein x is from 1 to 16; and
a linker co-surfactant selected from the group consisting of: monoglycerides, diglycerides, fatty acids, fatty di acids and combinations thereof;
wherein the ratio of said extended chain nonionic surfactant and linker co-surfactant is from about 7:1 to about 2:1 on a weight percentage ratio basis, and wherein the system forms an emulsion or microemulsion with oils that is stable and irreversible at temperatures between 60° C. and 100° C.
2. The surfactant system of claim 1 wherein said linker co-surfactant is a monoglyceride or diglyceride.
3. The surfactant system of claim 2 wherein said extended chain nonionic surfactant and linker co-surfactant are present in a weight percent ratio of about 7:1.
4. The sufactant system of claim 1 wherein said linker co-surfactant is a fatty acid or fatty diacid.
5. The surfactant system of claim 4 wherein said extended chain nonionic surfactant and linker co-surfactant are present in a weight percent ratio of about 2:1.
6. An emulsion or microemulsion comprising the surfactant system of claim 1 and an oil component selected from the group consisting of an oil, fatty acid, or triglyceride.
7. The emulsion or microemulsion of claim 6 wherein said oil is a vegetable oil.
8. The emulsion or microemulsion of claim 6 wherein said oil is synthetic oil.
9. The emulsion or microemulsion of claim 6 wherein said oil is a triglyceride.
10. The emulsion or microemulsion of claim 6 wherein said oil is a non-trans fat.
11. The surfactant system of claim 1 wherein said extended chain nonionic surfactant comprises a compound of formula:
—R—[L] x —[O—CH 2 —CH 2 ] y
where R is a linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radical having from about 8 to 20 carbon atoms, L is a linking group, x is the chain length of the linking group ranging from 5-15, and y is the average degree of ethoxylation ranging from 1 to 5.
12. The surfactant system of claim 1 wherein said extended chain nonionic surfactant is one or more of the following:
C 6-10 —(PO) 3 EO) 6 , C 6-10 —(PO) 3 (EO) 8 , C 10 —(PO) a (EO) b , 2-Ethyl Hexyl (PO) m (EO) n , C 6-12 (PO) 3-4 (EO) 4 , C 6-12 (PO) 3-4 (EO) 7 , C 16-18 (PO) 4 (EO) 5 carboxylic acid, C 16-18 (PO) 4 (EO) 2 -carboxylic acid, Iso C 9 —(PO) 2 EO 2 -carboxylic acid, and C 12-14 —(PO) 16 (EO) 12 .
13. The surfactant system of claim 1 wherein said system is used as a pre-spotter.
14. A cleaning composition including the surfactant system of claim 1 .
15. The cleaning composition of claim 14 wherein said cleaning composition is a hard surface cleaner.
16. The cleaning composition of claim 14 wherein said cleaning composition is a laundry detergent.
17. A method for removing a soil from a hard surface comprising applying a cleaning composition containing the surfactant system according to claim 1 to the hard surface and rinsing and/or wiping the cleaning composition from the hard surface.
18. A method for removing a soil from a soft surface comprising applying a cleaning composition containing the surfactant system according to claim 1 to the soft surface and rinsing and/or wiping the cleaning composition from the soft surface.
19. A method of laundering an article that is contacted with a non-trans fat, comprising;
providing a cleaning article that has been contacted with a non-trans fat;
washing the cleaning article;
rinsing the cleaning article;
drying the cleaning article; and
treating the cleaning article with an effective amount of a composition comprising a surfactant system according to claim 1 , wherein the treating occurs prior to or during the washing step.
20. The surfactant system of claim 1 wherein said surfactant system is essentially free of unreacted alcohols.