Abstract: The invention relates to the preparation of organopolysiloxane microemulsions, wherein the components (A) organopolysiloxane, (B) emulsifier, (C) water, optionally, (D) cosurfactant and optionally (E) acid are brought together and mixed in any desired sequence. Microemulsions are formed spontaneously without introduction of energy in the form of heat or severe shearing forces.

Abstract: The invention relates to a process for preparing polyorganosiloxane-containing emulsions having a mean particle size of less than 0.3 .mu.m in which, in a first step,(A) a concentrate is prepared by mixing a polyorganosiloxane with water and an emulsifier which is soluble in the polyorganosiloxane.and, in a second step,(B) the concentrate thus obtained is diluted with water to the desired polyorganosiloxane concentration.These emulsions can be used for impregnating fibres and fabrics.

Abstract: Aqueous emulsions for impregnating organic fibers, comprising, in addition to water and dispersants, (1) a diorganopolysiloxane having a Si-bonded hydroxyl group in each terminal unit and whose organic radicals are free of basic nitrogen atoms; (2) an organopolysiloxane containing diorganosiloxane units in which the two organic radicals are monovalent hydrocarbon radicals and also contains at least two monovalent SiC-bonded organic radicals per molecule having a basic nitrogen atom in which the organopolysiloxane is present in the emulsion in an amount of from 5 to 50 weight percent based on the weight of the diorganopolysiloxane (1); (3) an organosilicon compound selected from an organosilane containing at least two SiOC-bonded monovalent organic radicals consisting of carbon, hydrogen and possibly oxygen and/or partial hydrolyzates thereof, in which the organosilicon compound is present in the emulsion in an amount of from 2 to 6 weight percent based on the total weight of the diorganopolysiloxane (1) and o

Abstract: Organopolysiloxanes having SiC-bonded oxyalkylene units and Si-bonded hydroxyl groups, in which an average of at least 15 mol percent of the siloxane units contain only one SiC-bonded monovalent organic radical and the silicon valences which are not satisfied by the SiC-bonded monovalent organic radical are satisfied by siloxane oxygen atoms or oxygen atoms of hydroxyl groups. These organopolysiloxanes are preferably prepared by reacting triorganosiloxy end-blocked organopolysiloxanes consisting of diorganosiloxane units, in which at least part of these units contain SiC-bonded oxyalkylene units and, if appropriate, organohydrogensiloxane units or organohydroxyl siloxane units or organoalkoxysiloxane units of mixtures of at least two such monoorganosiloxy units with water in the presence of an acid or base or, and subsequently with a silane or simultaneously with water and a silane in which the silane contains one SiC-bonded monovalent organic radical, or partially hydrolyzed products of the silane.

Abstract: A process for coating a substrate which comprises applying to the substrate an aqueous emulsion containing:(1) A diorganopolysiloxane having terminal SiC-bonded vinyl groups;(2) An organopolysiloxane containing at least three Si-bonded hydrogen atoms per molecule;(3) A catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond; and if desired,(4) An agent which delays or retards the addition at room temperature; and(5) A thickening agent, which may be mixed with or added separately to the emulsion, and prior to cross-linking the organopolysiloxane, applying separately or together with one or more of the constituents (1) through (5);(6) A vinyl-containing trimethylsiloxy end-blocked diorganopolysiloxane in which the vinyl group is bonded to from 10 to 50 percent of the number of the silicon atoms of the diorganopolysiloxane units, and the other organic radicals are free of aliphatic multiple bonds;(7) An organosilicon adhesive compound; and(8) At least one aqueous dispersion of a

Abstract: A process for coating a substrate which comprises coating the substrate with a solution containing an organic solvent and(1) a diorganopolysiloxane having terminal SiC-bonded vinyl groups,(2) an organopolysiloxane having at least 3 Si-bonded hydrogen atoms per molecule,(3) a catalyst which promotes the addition of Si-bonded hydrogen to an aliphatic multiple bond; and optionally(4) an agent which delays or retards the addition of Si-bonded hydrogen to an aliphatic multiple bond at room temperature,(5) a diorganopolysiloxane having a viscosity of at least 10.sup.6 mPa.s at 25.degree. C. in which a vinyl group is bonded to a silicon atom in 0.033 to 3.33 percent of the diorganosiloxane units, while the other organic radicals in the diorganosiloxane units of the diorganopolysiloxane are free of aliphatic multiple bonds, and(6) an organosilicon adhesive compound.