Cleaning solvent compositions exhibiting azeotrope-like behavior and their use

A solvent composition having azeotrope-like properties and comprising from about 96 to about 99 weight percent 1,1,1,3,3,3-hexafluoro-2-methoxypropane ether (“HFMOP”) and from about 1 to about 4 weight percent acetone.

A method of cleaning an article of manufacture by contacting the article with a solvent composition having azeotrope-like properties and comprising 1,1,1,3,3,3-hexafluoro-2-methoxypropane ether (“HFMOP”) and acetone, the HFMOP and the acetone being present in a weight ratio of from about 24 to about 99 parts HFMOP to one part acetone, and the composition optionally further comprising, one or more additives which do not adversely affect the azeotrope-like properties of the composition and, if present, are present in an amount not exceeding about 10 weight percent of the composition, the additives, when present, being selected from the class consisting of one or more surfactants selected from one or more of alkylphosphate amine salts, ethoxylated alcohols, and quaternary ammonium salts;

• the lubricants, when present, being selected from one or more of mineral oil, alkyl benzenes, polyol esters, perfluoropolyethers, fluorosilicones, polytetrafluoroethylene, and polytrifluorochloroethylenes;
• and the co-solvents, when present, are selected from the class consisting of one or more of methanol, ethanol, n-propanol, isopropanol, benzyl alcohol, esters, ethers, ether alcohols, pentane, cyclopentane, hexane, cyclohexane, heptane and octane and removing the solvent composition from the article after the contacting of the article with the solvent composition.