Cleaning compositions employing extended chain anionic surfactants
The invention discloses synergistic combinations of surfactant blends and cleaning compositions employing the same. In certain embodiments a surfactant system is disclosed which includes an extended anionic surfactant with novel linker surfactants including one or more of an alkyl glycerol ether, an ethoxylated alkyl glycerol ether, an alcohol ethoxylate and/or a Gemini surfactant. This system forms emulsions with, and can remove greasy and oily stains, even those comprised of non-trans fats. The compositions may be used alone, as a pre-spotter or other pre-treatment or as a part of a soft surface or hard surface cleaning composition.
1. A surfactant system comprising:
an extended chain anionic surfactant, wherein the chain is a block of polypropylene oxide, polyethylene oxide, polybutylene oxide or a mixture thereof; and
a linker surfactant of an ethoxylated alkyl glycerol ether, and/or an C 2 to C 6 alcohol ethoxylate.
2. The surfactant system of claim 1 wherein said surfactant system is employed under alkaline or acid conditions.
3. The surfactant system of claim 1 wherein said extended chain anionic surfactant and the linker surfactant are present in a ratio of greater than 1:1 percent by weight of extended chain anionic surfactant to linker surfactant.
4. The surfactant system of claim 1 wherein said extended chain anionic surfactant and the linker surfactant are present in a ratio of 1:1.2 or greater percent by weight of extended chain anionic surfactant to linker surfactant.
5. The surfactant system of claim 1 wherein said ethoxylated alkyl glycerol ether has from about 1 to about 3 moles of ethoxylation.
6. The surfactant system of claim 1 wherein said system forms an emulsion or microemulsion with oily soils.
7. The surfactant system of claim 6 wherein said emulsion or microemulsion is formed with non-trans fats.
8. The surfactant system of claim 1 wherein said extended chain anionic surfactant comprises a compound of formula:
R-[L] x -[O—CH 2 —CH 2 ] y -M
where R is a linear or branched, saturated or unsaturated, substituted or unsubstituted, aliphatic or aromatic hydrocarbon radical having from about 6 to 20 carbon atoms; L is a linking group; M is an ionic species comprising carboxylates, sulfonates, sulfates, and/or phosphates; x is the chain length of the linking group ranging from about 2 to about 16; and y is the average degree of ethoxylation ranging from about 1 to about 5.
9. The surfactant system of claim 8 wherein said linking group has 5 or more moles of propoxylation.
10. The surfactant system of claim 9 wherein said extended chain anionic surfactant is C 12 —(PO) 16 -(EO) 2 sulfate.
11. A cleaning composition including the surfactant system of claim 1 .
12. The cleaning composition of claim 11 wherein said cleaning composition is a hard surface cleaner.
13. The cleaning composition of claim 11 wherein said cleaning composition is a detergent.
14. An emulsion product comprising:
the surfactant system of claim 1 and an oil.
15. The emulsion of claim 14 wherein said oil is a vegetable oil.
16. The emulsion of claim 14 wherein said emulsion is an oil based lubricant.
17. The emulsion of claim 14 wherein said oil is a synthetic oil.
18. The emulsion of claim 14 wherein said emulsion is a microemulsion.
19. The emulsion of claim 14 wherein said extended chain anionic surfactant is C 12 —(PO) 16 -(EO) 2 sulfate, wherein said linker surfactant is one of more of an ethoxylated alkyl glycerol ether, an C 2 to C 6 alcohol ethoxylate and/or a Gemini surfactant, and further wherein said extended chain anionic surfactant and said linker surfactant are present in a ratio of greater than 1:1 of extended chain anionic surfactant and linker surfactant.