Abstract: A hard surface cleaning composition forming upon agitation a relatively unstable emulsion breakable when applied to the hard surface to be cleaned comprising on a weight basis from about 2 to about 10% of an organic polar solvent; from about 0.1 to about 2.0% of a volatile organosiloxane; from about 0.1 to about 2.0% of a volatile surfactant having the formula: ##STR1## wherein R.sub.1 is an alkynyl of from 2 to 5 carbons; R.sub.2 is hydrogen or an alkyl of less than 4 carbons, and R.sub.3 is an alkyl or hydroxy alkyl of from 1 to 8 carbons, the total number of carbons being from 4 to 12, and water, the ratio of said volatile surfactant to said volatile organosiloxane being between about 3:1 to about 1:3. The preferred volatile surfactant is 3,5-dimethyl-1-hexyn-3-ol, while the preferred siloxane is the dimethyl siloxane cyclic tetramer.

Abstract: A cleaning and polishing composition for acrylic plastic substrates, including Plexiglas, Lexan and the like, as well as other hard surfaces is provided by an aqueous dispersion of a fluid silicone oil such as polydimethylsiloxane, a nonionic or anionic surfactant such as sodium lauryl sulfate and a fluorinated organic surface-active compound, the balance being water. These compositions provide fast, streak-free and dust repelling cleaning and polishing, especially suitable for Plexiglas and other acrylic plastic materials.

Abstract: A composition for cleaning a wide variety of hard surfaces in a no rinse mode, comprised of a mixture of organic solvents at least one having a low boiling point and at least one having a relatively higher boiling point, an alkali-metal polyphosphate, fugitive alkaline material, a first surfactant which is a nonionic or anionic surfactant, a second surfactant which is a fluorinated hydrocarbon anionic or nonionic surfactant, and water.