Abstract: Foamable silicone compositions, containing (A) at least one organopolysiloxane containing at least two alkenyl groups bonded to silicon per molecule, (B) at least one organopolysiloxane containing at least two hydrogen atoms bonded to silicon per molecule, (C) at least one porogenic agent generating gaseous hydrogen in the presence of component (B), and (D) at least one hydrosilylation catalyst. Foams obtained by curing such foamable silicone compositions have excellent resilience, moderate hardness, good mechanical properties, and flame retardancy, suitable for the sealing of battery pack cases.

Abstract: Silicon carbon composite particles and anode materials for use within lithium-ion batteries utilizing the silicon carbon composite particles. Where the silicon carbon composite particles have an alkali metal or alkaline earth metal concentration of 0.05 to 10 wt% and a pH > 7.5.

Abstract: Moisture-curing coating compositions, processes for making the same and uses for the same. The composition includes a Component (A) of one or more linear hydroxyl terminated organopolysiloxanes, a Component (B) of one or more organopolysiloxane resins, a Component (C) of one or more organosilicates, a Component (C) of one or more organosilicates, a Component (D) of one or more alkoxysilanes having at least one tertiary amino group, a Component (E) of one or more alkoxysilanes having at least one primary or secondary amino group and a Component (F) of one or more UV-fluorescent pigments. Where the one or more alkoxysilanes having at least one tertiary amino groups (D) have the following general formula (IV) R3R4N—(CR52)—Si(R2)3-x(OR1)x.

Abstract: Block-modified polysiloxanes and compositions comprising the block-modified polysiloxanes are useful in the field of textile finishing. Emulsions comprising the compositions have a very small and narrowly distributed particle size which increases penetration, and provide good softening properties coupled with good hydrophilicity.

Abstract: Alkyl-silicates and alkyl-silicate-containing organosilicon compounds. The alkyl-silicate-containing organosilicon compound includes at least 90% by weight, preferably at least 95% by weight, of alkyl silicates of average formula (I) Where the radicals Rx are each independently selected from radicals that meet at least one of the following conditions: (a) where Rx is a substituted or unsubstituted, C4-C20 hydrocarbon radical that is branched at the ?-carbon atom, (b) where Rx is a substituted or unsubstituted, C5-C20 hydrocarbon radical that is doubly branched at the ?-carbon atom, and/or (c) where Rx is an unsubstituted or alkyl-substituted cyclopentyl, cyclohexyl or cycloheptyl radical having a total of not more than 9 carbon atoms. Where the radicals R3 are each independently selected from (i) hydrogen, (ii) methyl radical, and (iii) ethyl radical.

Abstract: A cross-linkable composition along with processes for producing the same, uses for the same and articles made therefrom. The cross-linkable composition includes (A) at least one organic compound that is free of siloxane units having at least two reactive cyanate ester groups (?“N?C—O—”) and (B) at least one cyclosiloxane having the general formula (I) [RaRb1SiO2/2]m ??(I). Where R may be identical or different and represents monovalent, SiC-bonded, saturated aliphatic hydrocarbon radicals; where R1 may be identical or different and represents monovalent, SiC-bonded, halogen- or phosphorus-substituted, aromatic hydrocarbon radicals; where a is 0, 1 or 2, preferably 0 or 1, particularly preferably 0; where b is 0, 1 or 2, preferably 1 or 2, particularly preferably 2; where m is 3, 4 or 5, preferably 3 or 4, particularly preferably 4; and where a+b is 2 and at least three radicals R1 are present per siloxane molecule (B).

Abstract: Genetically modified microorganism strains for the fermentative production of cysteine provide higher yields of L-cysteine or L-cystine during fermentation. Cysteine production is improved in the genetically modified microorganism strains by attenuating or inactivating phosphoenolpyruvate synthase enzyme activity, alone or in combination with the overexpression of efflux proteins and proteins that reduce feedback inhibition by cysteine and by serine.

Abstract: A silirane-functionalized compound, a process for preparing the same, and a process for preparing siloxanes using a silirane-functionalized compound are described herein.

Abstract: A transport container. The transport container is used for the packaging and transportation of silicon fragments. Where the transport container includes 8 to 14 flat film bags or 8 to 12 flat double film bags that contain an amount of the silicon fragments therein.

Abstract: A composition crosslinkable by condensation reaction and producible using (A) organopolysiloxanes of the formula (R2O)3-aSiR1aO(SiR2O)nSiR1a(OR2)3-a (I), (B1) silanes of the formula R34-b(R4O)bSi (II), and optionally (B2) silicon compounds consisting of units of the formula R7c(R8O)dSiO(4-c-d)/2 (III). The composition contains organosilicon compounds having a molecular weight of less than or equal to 195 g/mol maximally in amounts of less than 0.5 wt%, based on organopolysiloxane (A).

Abstract: Polycrystalline silicon is produced in a chemical vapour deposition reactor, wherein, outside the reactor at at least one position on at least one reactor component, vibrations of the reactor are measured using a measurement device and optionally recorded. The vibrations may be used to identify rod fall over and other events occurring within the reactor.

Abstract: Metallurgical silicon containing impurities of carbon and/or carbon-containing compounds is classified and subsequently used selectively for chlorosilane production. The process comprises the steps of: a) determining the free carbon proportion which reacts with oxygen up to a temperature of 700° C., b) directing metallurgical silicon in which the free carbon proportion is ?150 ppmw to a process for producing chlorosilanes and/or directing metallurgical silicon in which the free carbon proportion is >150 ppmw to a process for producing methylchlorosilanes. As a result of the process, metallurgical silicon having a total carbon content of up to 2500 ppmw can be used for producing chlorosilanes.

Abstract: Compositions containing an aliphatically unsaturated silicone resin, an organic compound containing a (meth)acrylate or (meth)acrylamide group, a free radical initiator, and an organylammonium salt are useful in preparing composite articles, especially artificial stone.

Abstract: Polyvinyl alcohol-stabilized (meth)acrylic ester polymers, processes for preparing and uses for the same. Where the polyvinyl alcohol-stabilized (meth)acrylic ester polymers have particle sizes Dw of from 100 to 900 nm in the form of aqueous dispersions or water-redispersible powders. Where the (meth)acrylic ester polymers are based on (a) 1% to 30% by weight of one or more vinyl esters of carboxylic acids having 5 to 15 carbon atoms, (b) 20% to 80% by weight of one or more (meth)acrylic esters, wherein the homopolymer of which has a glass transition temperature Tg of ?20° C., (c) 10% to 70% by weight of one or more (meth)acrylic esters, wherein the homopolymer of which has a glass transition temperature Tg of ?50° C., and (d) optionally one or more further ethylenically unsaturated monomers. The percentages by weight are based on the total weight of the (meth)acrylic ester polymers.

Abstract: Powder paint composition, processes for preparing and uses for the same. The composition includes (a) at least one polymer powder redispersible in water, (b) pigment and filler and (c) optionally further additives. Where (a) is a polymer stabilized with polyvinyl alcohol, based on (a1) 20 to 100% by weight of at least one monomer from the group consisting of acrylic esters of branched or unbranched alcohols having 1 to 12 carbon atoms, (a2) 0 to 60% by weight of at least one monomer from the group consisting of methacrylic esters of branched or unbranched alcohols having 1 to 12 carbon atoms and styrene, (a3) 0 to 40% by weight of at least one monomer from the group consisting of vinyl esters of branched or unbranched carboxylic acids having 2 to 12 carbon atoms, and (a4) 0 to 20% by weight of other ethylenically unsaturated comonomers copolymerizable therewith.

Abstract: Vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers along with processes for preparing the same and uses for the same. Wherein the vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers are in the form of water-redispersible powders for producing hydraulically-setting building material dry formulations. Where the storage stability of the protective-colloid-stabilized vinyl acetate-ethylene or styrene-(meth)acrylic ester copolymers in the form of water-redispersible powders is improved by drying aqueous dispersions comprising protective-colloid-stabilized vinyl acetate-ethylene and/or styrene-(meth)acrylic ester copolymers, one or more water-soluble inorganic salts, and one or more desiccants.

Abstract: Crosslinkable compositions, processes for producing the same and products made therefrom. Where the crosslinkable compositions include a component (A) organosilicon compounds having at least two silanol groups and having a viscosity of 103 to 106 mPas at 25° C., mixtures (M) containing a component (B) of organosilicon compounds of the formula (I) and/or partial hydrolyzates thereof R6R7N—CR12SiRa(OR2)3-a??(I), a component (C), selected from (C2) compounds of the formula (III) R5OH??(III). The crosslinkable compositions may optionally also include a catalyst (D).

Abstract: Branched organopolysiloxanes are prepared from alkoxysilanes and polydiorganosiloxanes over two stages by basic equilibration and subsequent acid-catalyzed reaction with water to the desired degree of condensation, wherein the entire process does not require the use of additional organic solvent, no wastewater is generated and the process is particularly suitable for the controlled production of so-called DT resins.

Abstract: The invention relates to a process for preparing polycrystalline silicon, comprising introducing a reaction gas containing hydrogen and silane and/or halogen silane into a reactor, wherein the reactor comprises at least one heated carrier body, on which elementary silicon has been deposited by means of pyrolysis, forming the polycrystalline silicon. In a continuous process, waste gas is led out of the reactor and hydrogen recovered from said waste gas is fed to the reactor again as circulating gas. The circulating gas has a nitrogen content of less than 1000 ppmv. The invention further relates to polycrystalline silicon having a nitrogen component of less than 2 ppba.

Abstract: An organo(poly)siloxane (A) consists of units of general formula (I) RnSiO(4-n/2), where R is selected from the radicals R1, —OR2, Ru, RS and Q, wherein R1 denotes a monovalent substituted or unsubstituted hydrocarbon radical having 1 to 18 carbon atoms, R2 denotes a hydrogen atom or a monovalent substituted or unsubstituted hydrocarbon radical having 1 to 6 carbon atoms, Ru denotes a monovalent aliphatic unsaturated hydrocarbon radical having 2 to 18 carbon atoms, RS denotes a monovalent thiol-functionalized hydrocarbon radical, Q is a nitrogen functional group of formula (II) —CR5R6—NR4R3, where R3 and R4 each independently denote hydrogen or a substituted or unsubstituted hydrocarbon radical, and R5 and R6 each independently denote hydrogen or the methyl radical. The organo(poly)siloxane (A) contains per molecule at least one unit of general formula (III) Q-Si(OR7)2O1/2, at least 1 aliphatically unsaturated radical Ru, and at least 2 thiol-functionalized groups RS.