| 摘要 |
The invention relates to the use of an alkaline aqueous composition comprising;a) an amine oxide
b) a nonionic surfactant, not being an amine oxide, and
c) a cationic hydrotrope having the formula (I)
;;where R=C6-C22 hydrocarbyl, R1 and R2 are independently C1-C4 alkyl, n is at least 12, and at most 25, and X− is an anion, e.g. halide or methylsulphate;
for removal of dirt from hard surfaces. In particular the composition significantly reduces the amount of traffic film remaining on the surface after brushless vehicle cleaning as compared to presently applied formulation concepts. Further, the invention relates to certain such compositions and intermediates to make these. |
| 主权项 |
1. A method for cleaning vehicle surfaces, the method comprises contacting the vehicle surfaces with an alkaline aqueous composition comprising
a) 0.03-20% by weight of an amine oxide, b) 0.03-20% by weight of a nonionic surfactant, not being an amine oxide, c) 0.015-20% by weight of a cationic hydrotrope having the formula (I) where R=C6-C22 hydrocarbyl, R1 and R2 are independently C1-C4 alkyl, n is at least 12, and at most 25; and X− is an anion and further wherein the weight ratio of the sum of amine oxide and nonionic surfactant to hydrotrope is between 1:3 and 5:3, d) 0.03-40% by weight of alkali hydroxides, alkali builders and/or alkaline complexing agents; e) optionally other conventional additives selected from the group consisting of hydrotropes, surfactants, thickening agents, solvents, colorants, soil antiredeposition agents, preservatives, corrosion inhibitors and foam regulators, and f) balance water; with the proviso that if any anionic and/or amphoteric surfactant is present in the composition, then the molar amount of cationic hydrotrope of formula (I) is greater than the molar amount of any anionic groups that are part of an anionic and/or amphoteric surfactant. |
