Abstract:
PENTACOORDINATE ENDBLOCKED SILOXANES USEFUL AS CURING AGENTS FOR EPOXY RESINS AND AS EXTREME PRESSURE ADDITIVES FOR LUBRICANTS ARE DISCLOSED.
Abstract:
Hydrogensilsesquioxane, free of hydroxyl content, of the general formula (HSiO3/2)n where n is an even integer of 10 or more, is disclosed. The condensed hydrogensilsesquioxane is prepared by condensation of trichloro-, trimethoxy- or triacetoxysilanes in a sulfuric acid medium. A specific example is (HSiO3/2)2 where n has an average value of 20 or more. This material is a resinous polymer which contains small amounts of volatile oligomers and is useful as a protective coating.
Abstract:
1,232,874. Lubricants. DOW CORNING CORP. 22 July, 1968 [21 Aug., 1967], No. 34824/68. Heading C5F. [Also in Division C3] Heterocyclic silicon compounds useful as lubricants and hydraulic and heat transfer fluids have the general formula wherein R is hydrogen, hydrocarbon or halo hydrocarbon, at least 2 in each ring being hydrocarbon or halohydrocarbon and all being free of aliphatic unsaturation, R 1 is hydrocarbon or halohydrocarbon, Z is (CR 2 ) n O or (R 1 SiO) x , n is 2 to 5 and x is 0 or an integer which may be up to 10,000.
Abstract:
THIS INVENTION RELATES TO A PROCESS FOR THE PREPARATION OF DI-LITHIO (PERFLUOROALKYLETHYLSILYL) NEOCARBORANES BY REACTING DILITHIONEOCARBORANE WITH A CYCLIC TRISILOXANE.