Abstract: Fiber-treating compositions are described which durably provide water repellency and oil repellency for the treated fiber. These compositions comprise a siloxane component bearing fluorinated hydrocarbon radicals, unsubstituted hydrocarbon radicals and silicon-hydride atoms, and a dehydrogenation condensation catalyst. Curing of the compositions occurs by a dehydrogenation condensation reaction between the silicon-hydride atoms and/or between the silicon-hydride atoms and the hydroxyl radical of an optionally added hydroxyl-endblocked organopolysiloxanes.

Abstract: Improved wax compositions comprising certain hydrocarbon ester-containing organopolysiloxanes are disclosed. These compositions have improved shelf stability and excellent luster-bestowing properties, lubricating properties and water-repellent properties. They are useful in textile manufacture, such as treating sewing threads and textile warps, and for protecting surfaces, such as furniture surfaces and automobile surfaces.

Abstract: Aqueous organopolysiloxane compositions are disclosed which are useful for durably treating substrates such as fibers, textiles and sheet-form materials. The aqueous organopolysiloxane compositions further contain an acid to adjust the pH of the composition to a non-basic value, an organic ester of titanic, zirconic or germanic acid and a surfactant to render the composition homogeneous. The organopolysiloxane contains monovalent hydrocarbon groups, aminohydrocarbon groups, hydroxy- or ether hydrocarbon groups and, optionally silicon-bonded hydroxyl and/or alkoxy groups.

Abstract: Novel photosensitizers are disclosed which are particularly useful in photopolymerizable organopolysiloxane and silicone resins. The photosensitizers are themselves organopolysiloxanes which contain at least one silicon-bonded benzoin-containing radical. Synthesis methods are disclosed for preparing these photosensitizers which employ, as starting materials, an alkenyl-substituted benzoin and a silicon compound containing at least one silicon-bonded hydrogen atom.

Abstract: Disclosed are organopolysiloxane compositions comprising an aminofunctional organopolysiloxane, a surfactant, an organotitanate, --zirconate or --germanate, an organic acid and water. These compositions having a pH of from 2.5 to less than 7.0, are useful for treating fibers to durably provide desirable characteristics, such as crease resistance, softness, elongation recovery and water repellency.

Abstract: The preparation of emulsions of light and heavy brines in a liquid hydrocarbon is described, using a polydiorganosiloxane bearing at least one polyoxyalkylene radical and at least one monovalent hydrocarbon radical having from 6 to 18 carbon atoms. The emulsions are useful in the well-drilling art as drilling fluids, completion fluids, packer fluids, spacer fluids and workover fluids because of their thermal stability and because they can be formulated to have a relatively high density, with or without added weighting agents.

Abstract: Microparticles, such as microspheres and microcapsules, comprising a solid organopolysiloxane are prepared by irradiating a dispersion of discrete entities with ultraviolet light. The discrete entities are dispersed in a UV-transparent fluid continuous phase and are sphere-like particles of a UV-curable, liquid organopolysiloxane composition, or such a liquid organopolysiloxane composition containing a material to be encapsulated. The microparticles may be elastomeric or resinous and are useful as filler particles and time-release capsules.

Abstract: Fiber-treating compositions are disclosed which contain two types of organofunctional polysiloxanes, one bearing amino-functional organic radicals or carboxy-functional organic radicals or epoxy-functional radicals and the other bearing another type of organofunctional radicals selected from the same group. In addition, at least one of the organofunctional polysiloxanes bears one or more polyoxyalkylene radicals.These compositions are useful for durably treating fibers to provide several benefits such as antistatic character, moisture/perspiration absorbability, stain resistance, pliability, smoothness, crease resistance and compression recovery.

Abstract: Fiber-treating compositions are disclosed which contain two types of organofunctional polysiloxanes, one bearing amino-functional organic groups and polyoxyalkylene groups and the other bearing either carboxy-functional organic groups or epoxy-functional groups, in addition to polyoxyalkylene groups.These compositions are useful for durably treating fibers to provide several benefits such as antistatic character, moisture/perspiration absorbability, stain resistance, pliability, smoothness, crease resistance and compression recovery.

Abstract: Fiber-treating compositions are described which durably provide water repellency and oil repellency for the treated fibers. These compositions comprise a cyclic siloxane bearing fluorinated hydrocarbon radicals and silicon-hydride atoms, and a dehydrogenation catalyst. Curing of the compositions occurs by a dehydrogenation condensation reaction between the silicon-hydride atoms and/or between the silicon-hydride atoms and the hydroxyl radicals of an optionally added hydroxyl-endblocked organopolysiloxane.

Abstract: Air- and/or oven-drying lubricant paint compositions are disclosed which are useful for providing dry-film lubrication for substrates. The compositions comprise a binder resin dissolved in an organic solvent, optionally containing an extender, and further containing a polyalkylene wax which may be modified or unmodified. The dry-film lubricant provides a coefficient of friction which is lower, more uniform and of a narrower range than the compositions of the art.

Abstract: A detergent composition, particularly for use as a hair shampoo, consisting of a detergent substance, for example one based on a fatty alcohol or a fatty alcohol ethoxylate, and from 0.5 to 20 percent by weight, based on the total composition, of a cyclic methyl siloxane.The presence of the cyclic siloxane results in reduced drying time of the washed fibres.

Abstract: Vinyl resin compositions are disclosed which possess improved lubricity, mold releasability, water repellency, abrasion resistance, gloss and/or processability. These improvements are obtained by mixing with the vinyl resin a minor portion of an organopolysiloxane which bears one or more acyloxyhydrocarbyl radicals bonded to silicon in the organopolysiloxane.

Abstract: A method for preparing cyclotetrasiloxane, aliphatic chlorides and/or acyl chlorides from a cyclotrisiloxane, a chlorosilane and an acyloxy compound is disclosed. The chlorosilane and the acyloxy compound may be present as substantially equimolar amounts of separate compounds or they may be present in the same molecule in equimolar amounts. The reactants are merely heated sufficiently, with or without a soluble halide salt catalyst, to form the products. Advantageously this method can provide cyclotetrasiloxanes having water-sensitive radicals such as silicon-bonded chlorine atoms and/or silicon-bonded acyl chloride radicals. This method also provides a method for preparing cyclotetrasiloxanes having either one type of siloxane unit (non-mixed cyclotetrasiloxanes) or more than one type of siloxane unit (mixed cyclotetrasiloxanes).

Abstract: A method for preparing cyclotetrasiloxane, aliphatic chlorides and/or acyl chlorides from a chlorosilane and an acyloxy compound is disclosed. The chlorosilane and the acyloxy compound may be present as substantially equimolar amounts of separate compounds or they may be present in the same molecule in equimolar amounts. The reactants are merely heated sufficiently, with or without a soluble halide salt catalyst, to form the products. Advantageously this method can provide cyclotetrasiloxanes having water-sensitive radicals such as silicon-bonded chlorine atoms and/or silicon-bonded acyl chloride radicals.

Abstract: Tacky adhesives are removed from a substrate by a non-stinging, non-drying, non-staining, non-solvent process. The process uses a volatile methylsiloxane fluid to detackify the adhered adhesive, after which it is easily removed. This process is particularly useful for removing tacky adhesives from the human skin. A highly preferred volatile methylpolysiloxane fluid is octamethylcyclotetrasiloxane.

Abstract: Fiber lubricant compositions having unusual lubricating properties for spunbonded, nonwoven polypropylene carpet backing are disclosed. A needle-tufted carpet, prepared from a carpet backing bearing a composition of this invention, has unexpectedly high strength and unexpectedly low flammability. The compositions of this invention comprising a mixture of butyl stearate and certain silicone-glycol copolymers, are useful as a lubricant for synthetic fibers, in general.

Abstract: Curable silicone compositions are disclosed which comprise a liquid copolymeric organopolysiloxane comprising SiO.sub.2 and silicon-bonded hydroxyl radicals and/or silicon-bonded hydrogen radicals in varying amounts and a polydiorganosiloxane containing silicon-bonded vinyl radicals and/or silicon bonded hydroxyl radicals. The curable silicone compositions are useful as coatings for substrates.

Abstract: There is disclosed a composition of matter comprising an aminofunctional-radical-containing polydiorganosiloxane and carboxylfunctional-radical-containing polydiorganosiloxane. These compositions are useful for treating fibers to impart improved properties, such as pliability, smoothness, crease resistance, compression recovery and elongation recovery to fiber materials. The improved properties remain through washing and/or dry cleaning of the treated fiber materials.

Abstract: Water-in-oil type emulsions are disclosed wherein the water phase comprises a water-soluble alcohol and the oil phase comprises a volatile component and a soluble personal-care component.The emulsions further comprise certain polydiorganosiloxane-polyoxyalkylene copolymers and, optionally, a silicon-free organic surfactant having an HLB value of from 2 to 10.A preferred composition is a personal-care emulsion composition wherein the volatile, oil-phase component is a methylsiloxane fluid.