Claims
- 1. An aqueous hard surface cleaner with improved and rapid soil removal comprising:(a) a surfactant selected from the group consisting of anionic, nonionic surfactants, and mixtures thereof, with optionally, a quaternary ammonium surfactant the total amount of surfactant being present from about 0.001-10% by weight; (b) at least one water-soluble or dispersible organic solvent having a vapor pressure of at least 0.001 mm Hg at 25° C., said at least one organic solvent being selected from the group consisting of alkanols, diols, glycol ethers, and mixtures thereof present from about 1% to to 50% by weight of the cleaner; (c) Tetrapotassium ethylenediamine—tetraacetate (potassium, EDTA) as a chelating agent, said potassium EDTA present from about 0.01-25% weight of said cleaner; and (d) optionally dipotassiun carbonate as a buffer; and (e) the remainder, water.
- 2. The cleaner of claim 1 which comprises a single phase, isotropic solution.
- 3. The cleaner of claim 1 wherein said surfactant is an anionic surfactant of (a), selected from the group consisting of a linear or branched C6-4 alkylbenzene sulfonate, alkane sulfonate, alkyl sulfate, and mixtures thereof.
- 4. The cleaner of claim 1 wherein said surfactant of (a) is a nonionic surfactant, selected from the group consisting of an alkoxylated alkylphenol ether, an alkoxylated alcohol, or a semi-polar nonionic surfactant.
- 5. The cleaner of claim 4 wherein said nonionic surfactant is a semi-polar nonionic surfactant selected from the group consisting of mono-long-chain alkyl, di-short-chain trialkyl amine oxides, alkylamidodialkyl amine oxides, phosphine oxides and sulfoxides.
- 6. The cleaner of claim 5 wherein said nonionic surface of (a) is a mono-long-chain, di-short-chain trialkyl amine oxide.
- 7. The cleaner of claim 4 wherein said nonionic surfactant is an ethoxylated alkylphenol ether selected from the group consisting of ethoxylated octylphenol ethers, ethoxylated nonylphenol ethers, and mixtures thereof.
- 8. The cleaner of claim 7 wherein said nonionic surfactant is an ethoxylated octylphenol, ethoxylated with 1-10 moles of ethylene oxide.
- 9. The cleaner of claim 1 wherein said organic solvent is a C3-24 glycol ether.
- 10. The cleaner of claim 1 further comprising (f) a quaternary ammonium compound.
- 11. The cleaner of claim 10 wherein said quaternary ammonium compound is selected from the group consisting of mono-long-chain, ti-short-chain, tetraalkyl ammonium compounds, di-long-chain, di-short-chain tetra-alkyl ammonium compounds, trialkyl, mono-benzyl ammonium compounds, and mixtures thereof.
- 12. The cleaner of claim 1 further comprising (g) at least one adjunct selected from the group consisting of builders, buffers, fragrances, thickeners, dyes, pigments, foaming stabilizers, water-insoluble organic solvents, and hydrotropes.
- 13. The cleaner of claim 1 wherein said tetrapotassium EDTA is prepared by neutralizing the acid form of EDTA.
- 14. The cleaner of claim 13 wherein the neutralizing agent is potassium hydroxide.
- 15. The cleaner of claim 13 wherein said potassium hydroxide is present in a stoichiometric to slightly greater than stoichiometric amount.
- 16. The cleaner of claim 1 further comprising tetrasodium EDTA as a co-chelant.
Parent Case Info
This is a division, of a application Ser. No. 08/731,653, filed Oct. 17, 1996, now U.S. Pat. No. 5,972,876 entitled “LOW ODOR, HARD SURFACE CLEANER WITH IMPROVED SOIL REMOVAL”
US Referenced Citations (29)
Foreign Referenced Citations (1)
Number |
Date |
Country |
2-180999 |
Jul 1990 |
JP |
Non-Patent Literature Citations (3)
Entry |
FWC (filed Feb. 27, 1997) of previously filed U.S. Patent Application Ser. No. 08/507,543, Jul. 26, 1995, “Antimicrobial Hard Surface Cleaner,” Zhou et al. |
U.S. Patent Application Ser. No. 08/605,822, Feb. 23, 1996, “Composition and Apparatus for Surface Cleaning,” Choy et al. |
U.S. Patent Application Ser. No. 08/632,041, Apr. 12, 1996, “Hard Surface Cleaner with Enhanced Soil Removal,” Mills et al. |