Abstract: Fired clay moldings are hydrophobicized by applying a long chain alkyl-substituted alkoxysilane or hydrolysate thereof having up to 5 silicon atoms, and an alkoxy-functional silicone resin. The moldings, which may be roof tiles, are hydrophobicized to a significant depth, without discoloration.

Abstract: Fired clay moldings are hydrophobicized by applying a long chain alkyl-substituted alkoxysilane or hydrolysate thereof having up to 5 silicon atoms, and an alkoxy-functional silicone resin. The moldings, which may be roof tiles, are hydrophobicized to a significant depth, without discoloration.

Abstract: The invention relates to a stable aqueous cream consisting of the following components: (A), which is selected from (A1) C1-C20-alkyl-C2-C6-alkoxysilanes and (A2) organopolysiloxane containing alkoxy groups; (C) an emulsifier; and (D) an organic solvent. The stable aqueous cream is suitable for the hydrophobic impregnation or priming of mineral building materials.

Abstract: Aqueous emulsions contain the components (A) organosilicon compounds which are selected from (A1) C1-C20-hydrocarbon-C1-C6-alkoxysilanes and (A2) branched organopolysiloxanes containing C1-C6-alkoxy groups, (B) organosilicon compounds which are selected from (B1) C1-C6-alkoxysilanes containing aminoalkyl groups and (B2) branched organosiloxanes containing aminoalkyl groups and (C) an emulsifier. The aqueous emulsions are suitable for imparting water repellency to porous mineral building materials and building coatings and to wood. .

Abstract: The building compositions comprise hydrophobicizing powders which contain A) silica as support material and B) a hydrophobicizing component which is liquid at 10° C. and comprises B1) one or more organosilicon compound(s) and, if desired, B2) solvent and/or B3) water and emulsifier, with the proviso that the powders contain from 5 to 80% by weight of organosilicon compound, based on the total weight of the powder.

Abstract: The aqueous compositions for rendering absorbent materials oil-repellent and water-repellent consist essentially of(A) an organosilicon compound,(A1) a C.sub.1 -C.sub.20 -alkyl-C.sub.1 -C.sub.6 -alkoxysilane,(A2) an organopolysiloxane containing C.sub.1 -C.sub.6 -alkoxy groups and optionally groups selected from hydroxyl groups and C.sub.1 -C.sub.30 hydrocarbon groups which optionally contain basic nitrogen, or mixtures of (A1) and (A2),(B) an organofluorine compound consisting of fluorine and carbon atoms and optionally chlorine, hydrogen, oxygen sulfur, silicon, phosphorus and/ or nitrogen atoms, and containing CF bonds,(C) a surfactant and(D) water.

Abstract: The compositions of the present invention comprise the components (A) organosilicon compounds having hydrocarbon radicals, hydroxyl radicals and/or alkoxy radicals and (B) fluorinated organic siloxane compounds containing at least one organic radical having a fluoroalkyl radical comprising 4 to 20 carbon atoms, where the carbon atoms of the fluoroalkyl radicals are saturated with at least 90 mole % of fluorine atoms.

Abstract: The invention relates to a process for stabilizing organopolysiloxanes which contain phosphazenes and/or their reaction products which promote the condensation and/or equilibration of organopolysiloxanes. To stabilize any previously known organopolysiloxanes which contain phosphazenes and/or their reaction products against re-arrangements and also molecular weight changes and viscosity changes resulting therefrom, it is proposed that the said phosphorus compounds be brought into contact with at least one non-basic, solid adsorbent.

Abstract: The invention relates to a process by which organosilicon compounds carrying sulfur-containing organic radicals can easily be prepared by reacting organosilicons of the general formulaR.sub.a (R.sup.1 O).sub.b R.sup.2.sub.c SiO.sub.(4-a-b-c)/2(I)in whichR can be identical or different and is a monovalent organic radical,R.sup.1 can be identical or different and is a hydrogen atom or a monovalent organic radical,R.sup.2 can be identical or different and is a radical --QX, where Q is a divalent hydrocarbon radical and X is a halogen atom,a is 0, 1, 2 or 3,b is 0, 1, 2 or 3 andc is 0, 1, 2 or 3,with the proviso that the organosilicon compound has at least one radical R.sup.2 per molecule and the sum of a, b and c is less than or equal to 4, with sulfite in the presence of water.

Abstract: The present invention relates to oxygen-containing chlorophosphazenes containing organosilicon radicals, in particular those of the formulaZ-PCl.sub.2 =N(-PCl.sub.2 =N).sub.n -PCl.sub.2 O (I)in whichZ is an organosilicon radical bonded to phosphorus via oxygen andn is from 0 to 6, processes for their preparation and their use in processes for the condensation and/or equilibration of organosilicon compounds.

Abstract: A process for the condensation and/or equilibration of organosilicon compounds in the presence of oxygen-containing phosphazenes, in particular those of the formulaY--PCl.sub.2 .dbd.N(--PCl.sub.2 .dbd.N).sub.n --PCl.sub.2 O(I),in whichY represents a chlorine atom or the hydroxyl group andn represents 0 or an integer from 1 to 8, and/or condensation products thereof.

Abstract: Organosilicon compounds which contain Bunte salt groups and contain units of the general formula ##STR1## wherein R is a hydrogen atom or a monovalent organic radical, R.sup.1 is a hydrogen atom or a monovalent organic radical, R.sup.2 is a radical --QS.sub.2 O.sub.3 M, where Q is a divalent hydrocarbon radical and M is an alkali metal radical or optionally a substituted ammonium radical, a is 0, 1, 2 or 3, b is 0, 1, 2 or 3, and c is 0, 1, 2 or 3, processes for preparing the organosilicon compounds and their use are described.