Abstract: Aminofunctional siloxanes, such as siloxanes bearing ethylenediamine-substituted hydrocarbon radicals, have their amine functionality fully modified by reaction with a monocarboxylic acid anhydride. The modifying functionality includes complete diamide or amide-amine salt formation. The amide-amine salt functionality can further be converted to a mixture of diamide and amide-amine functionality, if desired. The modified aminofunctional siloxanes have utility as components in hair care compositions, textile treating compositions and moldable polymeric compositions.

Abstract: New cationic polydiorganosiloxanes are disclosed that are substantive to proteinaceous substrates. These cationic polydiorganosiloxanes have methyl substituents, and diaminoalkyl substituents reacted with benzyl chloride. These cationic polydiorganosiloxanes are easily emulsified and are useful for treating human hair, human skin, and animal fur.

Abstract: Adhesive-releasing silicone coatings are provided for substrates by applying a composition consisting essentially of a polydiorganosiloxane substituted with methyl, ethyl, propyl, or hydroxyl radicals and an ultraviolet radiation photosensitizer to a substrate, and exposing the applied solution to ultraviolet radiation. By the method of this invention said polydiorganosiloxanes can be crosslinked on substrates to furnish, e.g., adhesive-releasing coatings on paper.

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: Radiation-curable compositions consisting essentially of a triorganosiloxane-endblocked polydiorganosiloxane fluid bearing a small percentage of mercaptoalkyl radicals and a curing agent comprising a 1,1'-oxy-bis-(1-methyl-1-silacyclopentene) are disclosed. When applied to a substrate and exposed to energetic radiation these compositions rapidly cured to provide a coating on the substrate that releases aggressive adhesives. Advantageously, the coating, when cured with ultraviolet light in air, is essentially free of the obnoxious odor which characterizes the analogous compositions of the art which are cured with only polymethylvinylsiloxane as a curing agent.