Abstract: An aqueous emulsion comprises (1) organopolysiloxanes containing SiC-bonded aliphatically unsaturated groups in the terminal units, (2) organopolysiloxanes containing at least 3 Si-bonded hydrogen atoms, (3) a catalyst promoting the addition of Si-bonded hydrogen to aliphatic unsaturation, (4) organosilicon adhesion promoters, (5) silicone resins, (6) an emulsifier, (7) water, and (8) carbon black. The emulsions may be applied to fabric prior to drying and shrinking, and vulcanized while drying the fabric. The coated fabrics exhibit ideal characteristics for use as airbag material.

Abstract: A process for preparing silanes of the formula 1:

Abstract: The invention relates to self-adhesive addition-crosslinking silicone compositions which contain the components (A) diorganopolysiloxanes having aliphatic unsaturation, (B) organohydrogenpolysiloxanes bearing compatability decreasing substituents, (C) compounds having at least one aliphatically unsaturated radical and at least one &bgr;-diketone function or &bgr;-keto ester function and (D) a hydrosilylation catalyst. The compositions are cost effective, and exhibit excellent adhesion to both metallic and non-metallic substrates while maintaining other desirable physical properties.

Abstract: The invention provides a method of producing aqueous, protective colloid stabilized vinyl ester homo- and co-polymer dispersions with a defined solids content by emulsion polymerization in the presence of a protective colloid. The method specifies that a dispersion with a solids content lower than the defined solids content is produced and then thickened to the defined solids content after the polymerization has been completed. The dispersion is thickened by adding a polymer powder which is of the same polymer composition as the emulsion polymerizate and which can be redispersed in water.

Abstract: Organopolysiloxane compositions which are stable on storage in the absence of moisture and can be crosslinked at room temperature on admission of moisture are based on organosilicon compounds containing at least two hydrolyzable groups, and contain, as catalyst, at least one titanium compound of the formula Ti(OR)4-n[(OR1)x—OR2]n  (I) where R may be identical or different and are monovalent, substituted or unsubstituted hydrocarbon radicals, R1 may be identical or different and are divalent, substituted or unsubstituted hydrocarbon radicals, R2 may be identical or different and are as defined for R, n is 1, 2, 3 or 4 and x is an integer greater than or equal to 1.

Abstract: This invention relates to a process for prebinding fiber materials by means of a pulverulent binder composition. It further relates to the use of the prebound fiber material for producing plastics moldings from fiber-reinforced unsaturated polyester resins or epoxy resins by laying up the prebound fiber material, saturating the fiber material with the unsaturated polyester resin or epoxy resin and forming the molding.

Abstract: A process for preparing unsaturated organosilanes containing organic carbonyloxy groups and having the formula

Abstract: A continuous process for the direct synthesis of silanes of the formula

Abstract: A continuous process for the direct synthesis of silanes of the formula 1 RaSiCl4−a  (1) involves reacting finely divided silicon metal with R—Cl in a fluidized bed, where R is hydrogen, methyl or ethyl and a is 0, 1, 2, 3 or 4, where a product stream comprising gaseous silanes of the formula 1, further gaseous reaction products, unreacted RCl and silicon-containing dust is discharged from the fluidized bed, wherein at least part of the dust is introduced in the form of a suspension in a liquid selected from among liquid silanes of the formula 1, further liquid reaction products and mixtures thereof, into the fluidized bed.

Abstract: Disclosed is a process for producing fiber webs by the airlaid process of laying down the fibers and the pulverulent binder in an air stream, which includes a first step of laying a fiber web or fibers up to a basis weight of 10 to 50 g/m2, a subsequent step of laying down fibers and a thermoplastic polymer powder based on polymers of one or more monomers such as a vinyl ester or a (meth)acrylic ester separately or as a mixture in the air stream in an amount of 10 to 300 g/m2 and, if appropriate, repeating this step until the desired basis weight is obtained, and consolidating the fiber material at temperatures of 80° C. to 260° C. and, if appropriate, at a pressure of up to 100 bar.

Abstract: A process for the preparation of multiphase formulations of organosilicon compounds by (A) formation of a mixture containing organic compound(s) (1) containing at least two aliphatic double bonds and of the general formula R2(CR1═CH2)x,  (1) in which R1 are a hydrogen atom or an alkyl radical having 1 to 6 carbon atoms per radical, R2 is a divalent, trivalent or tetravalent hydrocarbon radical having 1 to 25 carbon atoms per radical; and x denotes 2, 3 or 4 corresponding to the valence of R2; and an organopolysiloxane (2) having on average more than one Si-bonded hydrogen atom per molecule; a catalyst (3) promoting the addition of Si-bonded hydrogen at an aliphatic double bond; an emulsifier (4); and an agent (5) immiscible with (1) and (2); and (B) emulsification of the mixture, with the proviso that the ratio of aliphatic double bond in organic compound (1) to Si-bonded hydrogen in the organopolysiloxane (2) in (A) is such that toluene-soluble siloxane copolymers are obtained.

Abstract: A charging material made from semiconductor material, is used for charging or recharging a melting crucible during the Czochralski crucible-pulling process. This charging material has a polycrystalline semiconductor rod, which at one end has a groove, and a monocrystalline semiconductor rod, which at one end has a tongue, which rods are coupled by means of a tongue-and-groove connection. There is also a holding system for holding a polycrystalline silicon rod during the Czochralski crucible-pulling process or the float zone process, which has a tongue-and-groove connection between the polycrystalline semiconductor rod, which at one end has a groove, and a monocrystalline semiconductor rod, which at one end has a tongue.

Abstract: A process is provided for producing fast curing bonded with phenolic resin, which comprises pulverulent phenolic resins mixed with or applied to the substrate to be adhered together with pulverulent addition polymers selected from the group consisting of polyvinyl alcohols and addition polymers, stabilized by hydroxyl-containing protective colloids of at least one monomer selected from the group consisting of the vinyl esters of branched or unbranched carboxylic acids of 1 to 12 carbon atoms, the esters of acrylic acid and methacrylic acid with branched or unbranched alcohols of 1 to 12 carbon atoms, vinylaromatics, vinyl halides, olefins and dienes, and subsequently, by the employment of elevated temperature and optionally elevated pressure, cured and processed into a shaped article.

Abstract: Redispersible polymer powders are prepared by emulsion polymerization of ethylenical, unsaturated monomers in the presence of a protective colloidal stabilizer containing 20 to 95 weight percent of polymerized monomers containing sulfonic acid or sulfonate groups, 5 to 80 weight percent of polymerized monomers containing amide groups or hydroxylalkyl groups, and up to 5 weight percent of polymerized monomers which are hydrophobic, water-insoluble ethylenically unsaturated compounds. The redispersible polymers are suitable for use in construction materials and coatings, and exhibit higher water resistance than similar polymers stabilized with polyvinyl alcohol as a colloidal stabilizer.

Abstract: The invention relates to compositions which can be prepared from at least one polyorganosiloxane, boric acid and water, and which may serve as a pelletizing additive for crosslinkable silicone rubber formulations. A small proportion of the pelletizing additive, when added to a ore component crosslinkable silicone rubber, or to individual components of a two or more component silicone rubber formulation, allow production of free flowing pellets which retain storage stability for extended periods of time.

Abstract: Radiation-curable compositions containing linear organopolysiloxanes bearing (meth)acryloxy groups and a photosensitizer are useful for release coatings particularly release coatings with enhanced adhesion to the substrate onto which they are coated, for example those used for adhesives such as pressure sensitive adhesive labels.

Abstract: Compositions prepared by mixing

Abstract: The invention concerns a dispersion powder composition which is redispersible in water and is made from water-insoluble organic polymers, the composition being characterized in that it contains 0.1 to 30% by wt., relative to the weight of the organic polymers, of one or more silicon compounds which are dispersible in water and which have a boiling point at normal pressure of 160 degrees C., selected from the group comprising the silanes, polysilanes, oligosiloxanes, carbosilanes, polycarbosilanes, carbosiloxanes, polycarbosiloxanes and polysilylenedisiloxanes. The invention also concerns methods for manufacturing such compounds and their use.

Abstract: The invention relates to a process for preparing an aqueous polymer dispersion for removable pressure-sensitive adhesive films by means of free-radically initiated aqueous emulsion polymerization of one or more ethylenically unsaturated monomers from the group consisting of esters of acrylic acid and methacrylic acid with branched or unbranched alcohols having 1 to 12 carbon atoms, vinyl esters of branched or unbranched carboxylic acids having 1 to 12 carbon atoms, vinyl-aromatics, vinyl halides, olefins and dienes, which comprises copolymerizing from 0.01 to 2.0% by weight of polar, ionic or nonionic comonomers or mixtures thereof, and if polar ionic comonomers, alone or in a mixture, are copolymerized, the proportion thereof is not more than 1.0% by weight, and the amounts in % by weight are based in each case on the overall weight of the comonomers.

Abstract: A gastight shut-off device (1) which can be fitted between a supply pipeline (2) and a discharge pipeline (3), in the form of a ball valve, includes a housing (4), a housing flow passage with an inlet section (5) and an outlet section (6), a shut-off ball (7) with a shut-off ball flow passage (8), the shut-off ball (7) being mounted in the housing (4), if appropriate by means of two sealing rings (9, 10), and an actuating drive (11) for the shut-off ball (7); and inlet section (5) is designed in such a manner that it reaches into the shut-off ball flow passage (8), which is designed in such a manner that, in the event of the ball valve closing through rotation of the shut-off ball (7), that part of the inlet section (5) which reaches into the shut-off ball flow passage (8) is accommodated in a slot in the shut-off ball.