Abstract: A composition curable upon exposure to ultraviolet light is disclosed which consists essentially of a vinyl-containing siloxane and siloxane-containing, silicon-bonded hydrogen atoms. A mercaptofunctional silicone can be employed in the composition as a cure accelerator. Another composition curable upon exposure to ultraviolet light which is disclosed consists essentially of a mercaptofunctional siloxane and a vinyl-containing siloxane.

Abstract: A method for improving the flame-retardant characteristics of substrates by applying thereto an arylorganobromosilicone compound of the general formula ##STR1## WHEREIN X HAS AN AVERAGE VALUE OF FROM 2 TO 3, R' is selected from the group consisting of ethylene, propylene and butylene radicals, y has a value from 1 to 10, R is selected from the group consisting of hydrocarbon radicals containing from 1 to 18 carbon atoms, fluorinated hydrocarbon radicals containing from 1 to 18 carbon atoms, chlorinated hydrocarbon radicals containing from 1 to 18 carbon atoms and cyanohydrocarbon radicals containing from 1 to 18 carbon atoms, and z has a value from 0 to 25 is disclosed.

Abstract: Arylorganobromosilicone compounds having the general formula ##STR1## WHEREIN X HAS AN AVERAGE VALUE OF FROM 2 TO 3, R' is selected from the group consisting of ethylene, propylene and butylene radicals, y has a value of from 1 to 10, R is selected from the group consisting of hydrocarbon radicals containing from 1 to 18 carbon atoms, fluorinated hydrocarbon radicals containing from 1 to 18 carbon atoms, chlorinated hydrocarbon radicals containing from 1 to 18 carbon atoms and cyanohydrocarbon radicals containing from 1 to 18 carbon atoms, and z has a value of from 0 to 25 are disclosed. These compounds are useful, for example, for improving the fire resistance of other materials.

Abstract: Organobromosilicone fluids having the general formula(BrCH.sub.2).sub.3 CCH.sub.2 O(R.sub.2 SiO).sub.x CH.sub.2 C(CH.sub.2 Br).sub.3wherein each R is selected from the group consisting of hydrocarbon radicals containing from 1 to 18 carbon atoms, fluorinated hydrocarbon radicals containing from 1 to 18 carbon atoms, chlorinated hydrocarbon radicals containing from 1 to 18 carbon atoms and cyanohydrocarbon radicals containing from 1 to 18 carbon atoms, and x has a value of from 1 to 20 are disclosed. These fluids are useful, for example, for improving the fire resistance of cellulosic substrates.

Abstract: A composition consisting essentially of a specific siloxane fluid and a specific type of filler is disclosed to be useful as an electrical coating particularly where arc track resistant characteristics are needed.

Abstract: Metal substrates such as molds and fuser rolls are coated with carboxyfunctional siloxanes to improve their release characteristics.

Abstract: Improved electrical devices such as transformers, and capacitors containing an improved dielectric fluid consisting essentially of a major amount of a liquid polyorganosiloxane and a minor amount of certain selected ketones which are soluble in said siloxane are disclosed.

Abstract: A composition consisting essentially of (1) a siloxane glycol copolymer, (2) a foam control agent, and (3) a hydroxyl endblocked polydimethylsiloxane is disclosed.

Abstract: A composition for controlling foam is disclosed which comprises (1) a base oil of polyoxypropylene polymers, polyoxypropylene-polyoxyethylene copolymers or siloxane glycol copolymers, (2) a foam control agent comprising a liquid polydimethylsiloxane, silica, and optionally a siloxane resin and (3) a siloxane copolymer dispersing agent.

Abstract: Polishes are made detergent resistant by incorporating therein carboxyfunctional siloxanes.

Abstract: Dispersions are disclosed which consist essentially of (A) an unsaturated polyester resin, (B) an additive for the resin which modifies the resin's properties which additive is selected from the group consisting of liquid organopolysiloxanes, siloxane copolymers composed of SiO.sub.2 and R.sub.3 SiO.sub.1 /.sub.2 units, and liquid polyolefins, and (C) select silicone dispersing agents which keep (B) dispersed in (A).

Abstract: Improved electrical devices such as transformers, and capacitors containing an improved dielectric fluid consisting essentially of a major amount of a liquid polyorganosiloxane and a minor amount of certain selected chlorendates which are soluble in said siloxane are disclosed.

Abstract: Organosilicon grease-like compounds having good shear stability and being suitable for optical coupling are prepared by mixing a phenylmethylpolysiloxane fluid or a trimethylsiloxy endblocked fluid consisting of decylmethylsiloxane, tetradecylmethylsiloxane and alpha-methylstyrenemethylsiloxane units, a finely divided silica, and a polyalkylene oxide. A typical compound would be a mixture of 150 parts of a phenylmethylpolysiloxane, 15.5 parts of a fume silica having surface area of 380 square meters per gram, and 4 parts of polypropylene oxide having a molecular weight of 2,000. Such a compound has a light transmission in excess of 80% and excellent work shear stability.