Abstract: The invention relates to silane-modified silicas having a BET surface area of 40 to 155 m2/g, a sulphur content between 0.05% and 25% by weight and a particle size d5 of ?4 ?m, and d50 of ?16 ?m. The silane-modified silicas are used in rubber mixtures.

Abstract: The invention relates to a process for dismutating at least one halosilane and reducing the content of extraneous metal and/or a compound containing extraneous metal in the at least one halosilane and in the at least one silane obtained, by contacting at least one halosilane of the general formula I, HnSiClm (I), where n and m are integers and n=1, 2 or 3 and m=1, 2 or 3 and n+m=4, with a particulate, organic, amino-functional resin to obtain at least one silane of the general formula II, HaSiClb (II), where a and b are integers and a=0, 2, 3 or 4 and b=0, 1, 2 or 4 where a+b=4, in one step, in which the content of extraneous metal and/or compounds containing extraneous metal has been reduced compared to the halosilane of the formula I. The invention further provides for the use of this resin for dismutating halosilanes and as an absorbent of extraneous metals or compounds containing extraneous metal in a process for preparing monosilane.

Abstract: The invention relates to a composition comprising olefinically functionalized siloxane oligomers derived from olefinically functionalized alkoxysilanes and optionally alkoxysilanes functionalized with saturated hydrocarbons, and also, optionally, a tetraalkoxysilane, which have not more than one olefinic radical on the silicon atom, and whose chloride content is reduced, and also to processes for preparing them and to the use thereof.

Abstract: A silicon-containing azodicarboxamide is obtainable by reacting an azodicarboxy compound with an aminosilane. The silicon-containing azodicarboxamides are suitable for use in cable sheathing, hoses, drive belts, conveyor belts, roll coverings, footwear soles, ring seals and damping elements.

Abstract: The invention relates to mercaptosilane-polymer blends comprising at least one mercaptosilane of the general formula I and at least one polymer selected from the group of polypropylene, polyethylene and ethylene-vinyl acetate. They are produced by mixing the mercaptosilane of the general formula I with the polymer. They can be used in rubber mixtures.

Abstract: The invention relates to silane-modified silicas having a BET surface area of 40 to 155 m2/g, a sulphur content between 0.05% and 25% by weight and a particle size d5 of ?4 ?m, and d50 of ?16 ?m. The silane-modified silicas are used in rubber mixtures.

Abstract: The invention relates to a composition containing olefinically functionalized siloxane oligomers which are derived from olefinically functionalized alkoxy silanes and optionally alkoxy silanes functionalized with saturated hydrocarbons and optionally a tetraalkoxysilane, at most comprising an olefinic group on the silicon atom having a reduced chloride content and the VOC content being lower with respect to the hydrolysable alkoxy-groups. The invention also relates to methods for the production thereof and to the use thereof.

Abstract: The invention relates to a composition containing olefinically functionalized siloxane oligomers which are derived from olefinically functionalized alkoxy silanes and optionally alkoxy silanes functionalized with saturated hydrocarbons and optionally a tetra alkoxysilane, at most comprising an olefinic group on the silicon atom and which has a reduced chloride content and a weight average molecular mass (Mw) of more than 315 g/mol.

Abstract: The invention relates to mercaptosilane-polymer blends comprising at least one mercaptosilane of the general formula I and at least one polymer selected from the group of polypropylene, polyethylene and ethylene-vinyl acetate. They are produced by mixing the mercaptosilane of the general formula I with the polymer. They can be used in rubber mixtures.

Abstract: The invention relates to a composition of a carboxyl-functionalized silicon-containing precursor compound of at least two different organic acids, said composition having two, three, or four carboxyl groups functionalized with various hydrocarbon groups according to formula I and/or II. Said carboxyl groups can be released as carboxylic acids and can be used as silane hydrolysis catalysts and/or silane condensation catalysts. The invention further relates to methods for producing the composition, to the use of the composition for cross-linking polymers, and to a formulation of the composition in the form of a masterbatch.

Abstract: The present invention relates to a binder for composite materials comprising cellulose- or lignocellulose-containing materials, which is based on the components (i) at least one binder from the series consisting of organic resins, isocyanates, natural or near-natural binders and (ii) at least one composition based on an aminoalkylsilane. The invention furthermore relates to a composite material which is at least based on a cellulose- or lignocellulose-containing material and the abovementioned binder, a process for the production of such a composite material and the use of the binder system according to the invention for the production of wood-based materials.

Abstract: The invention relates to a composition containing olefinically functionalized siloxane oligomers which are derived from olefinically functionalized alkoxy silanes and optionally alkoxy silanes functionalized with saturated hydrocarbons and optionally a tetraalkoxysilane, at most comprising an olefinic group on the silicon atom having a reduced chloride content and the VOC content being lower with respect to the hydrolysable alkoxy-groups. The invention also relates to methods for the production thereof and to the use thereof.

Abstract: The invention relates to a composition containing olefinically functionalized siloxane oligomers which are derived from olefinically functionalized alkoxy silanes and optionally alkoxy silanes functionalized with saturated hydrocarbons and optionally a tetra alkoxysilane, at most comprising an olefinic group on the silicon atom and which has a reduced chloride content and a weight average molecular mass (Mw) of more than 315 g/mol.

Abstract: The invention relates to a composition comprising olefinically functionalized siloxane oligomers derived from olefinically functionalized alkoxysilanes and optionally alkoxysilanes functionalized with saturated hydrocarbons, and also, optionally, a tetraalkoxysilane, which have not more than one olefinic radical on the silicon atom, and whose chloride content is reduced, and also to processes for preparing them and to the use thereof.

Abstract: The invention relates to a process for the catalytic hydrodehalogenation of SiCl4 to form HSiCl3, which comprises bringing a gaseous feed mixture comprising hydrogen and silicon tetrachloride into direct contact with at least one heating element of a resistance heating device, with the heating element being composed of a metal or a metal alloy and being heated to carry out the reaction.

Abstract: The invention relates to a process for preparing silicon-containing azodicarbamides of the general formula (I) (R1)3-a(R2)aSi—RI—NH—C(O)—N?N—C(O)—NH—RI—Si(R1)3-a(R2)a (I), by reaction of azobiscarboxy compounds of the general formula II R3—X1—C(O)—N?N—C(O)—X1—R4 (II) with aminosilanes of the general formula III (R1)3-a(R2)aSi—RI—NH2 (III).

Abstract: The present invention provides a composition based on the reaction at least of the following components: (i) a glycidyloxypropylalkoxysilane, (ii) an aqueous silica sol having an SiO2 content of >20% by weight, (iii) an organic acid hydrolysis catalyst, and (iv) n-propyl zirconate, butyl titanate or titanium acetylacetonate as crosslinker, a process for its preparation, and the use thereof, particularly as a composition for scratch resistant coatings, and also provides articles thus coated.

Abstract: The invention relates to an agent for providing substrates based on cellulose and/or starch with water-repellent and simultaneously antifungal, antibacterial, insect-repellent and antialgal properties, which contains water and, as active substance, at least one linear, cyclic, branched or crosslinked co-oligomer or mixtures of co-oligomers from the series consisting of the alkyl-/aminoalkyl-/alkoxy- or hydroxy-siloxanes, the use of such agents and a special treatment process using such agents.

Abstract: The invention relates to a composition of a carboxyl-functionalized silicon-containing precursor compound of at least two different organic acids, said composition having two, three, or four carboxyl groups functionalized with various hydrocarbon groups according to formula I and/or II. Said carboxyl groups can be released as carboxylic acids and can be used as silane hydrolysis catalysts and/or silane condensation catalysts. The invention further relates to methods for producing the composition, to the use of the composition for cross-linking polymers, and to a formulation of the composition in the form of a masterbatch.

Abstract: The invention relates to a process for preparing silicon-containing azodicarbamides of the general formula (I) (R1)3-a(R2)aSi—RI—NH—C(O)—N?N—C(O)—NH—RI—Si(R1)3-a(R2)a (I), by reaction of azobiscarboxy compounds of the general formula II R3—X1—C(O)—N?N—C(O)—X1—R4 (II) with aminosilanes of the general formula III (R1)3-a(R2)aSi—RI—NH2 (III).