Cleaning composition

Claim 1

A cleaning composition having particular utility in the removal of soil from aluminum airplane surfaces and substantially preventing the redeposition thereon, consisting essentially of an aqueous solution, each liter thereof having dissolved therein 1. an effective amount for cleaning said airplane surfaces of at least 1 gram of a nonionic surfactant system consisting essentially of a. a first ethoxylated nonionic surfactant containing 35-55% oxyethylene units by weight, and b. a second ethoxylated nonionic surfactant containing at least 55% oxyethylene units by weight but not less than 10% more oxyethylene units by weight than does the first surfactant, said surfactants being selected from the group consisting of A. polyethoxylated alkyl phenols containing 8 to 12 carbon atoms in the alkyl group, polyethoxylated fatty acids of fatty acids containing about 18 carbon atoms, and polyethoxylated sorbitan esters of fatty acids wherein each fatty acid contains from 12 to 18 carbon atoms wherein the mol ratio of the first ethoxylated surfactant to the second ethoxylated surfactant is about 3.5:1 to 1:3, and B. ethoxylated C 11-15 secondary alkanols wherein the mol ratio of the first ethoxylated surfactant is about 4:1 to 1:3.5, and 2. in a concentration effective to substantially prevent redeposition of soil, at least 0.1 millimol per liter of a fluoroaliphatic phosphate selected from the group consisting of C.sub.8 F.sub.17 SO.sub.2 N(C.sub.2 H.sub.5)C.sub.2 H.sub.4 OPO(OH).sub.2 [cf.sub.3 (cf.sub.2).sub.7 so.sub.2 n(c.sub.2 h.sub.5)c.sub.2 h.sub.4 o]po(onh.sub.4), and [CF.sub.3 (CF.sub.2).sub.5-14 C.sub.2 H.sub.4 O].sub.2 PO[ONH.sub.2 (C.sub.2 H.sub.4 OH).sub.2 ] .