Abstract: One-part room-temperature curable compositions (RTV-1 compositions) based on organosilicon compounds are less toxic compared to conventional compositions containing organotin compounds and, at the same time, have excellent curing properties, a skin formation time which allows proper handling and tooling, and excellent storage stability. The compositions contain: at least one organosilicon compound containing condensable groups; at least one curing agent having the formula R?Si(OOCR?)3, wherein R? is C3-C6 alkyl, and R? is C1-C6 alkyl; at least one organotitanium compound curing catalyst; and at least one filler.

Abstract: Alkoxysilyl-terminated polymers having from 5-60% of ?-silyl groups and also having non-?-silyl groups can be stabilized by conventional water scavengers to produce rapid-curing room temperature vulcanizable one component silicone composition which are storage stable.

Abstract: A methylpolysiloxane mixture along with uses and methods for operating a solar thermal power station (or CSP plant) utilizing the same. The use for the methylpolysiloxane mixture includes providing a mixture (a) wherein the methylpolysiloxane mixture includes a linear methylpolysiloxanes MDxM, wherein x is an integer with 0?x?100, and wherein the mixtures have a molar M:D ratio of 1:15.5 to 1:30; or (b) wherein the methylpolysiloxane mixture includes a linear methylpolysiloxanes MDxM, wherein x is an integer with 0?x?80 and cyclic dimethylpolysiloxanes Dy where y is an integer?3, wherein the sum of the fractions of all cyclic dimethylpolysiloxanes Dy is 10-95 wt %, and wherein the mixtures have a molar M:D ratio of 1:10.5 to 1:30. The methylpolysiloxane mixture is used as a heat transfer fluid in a CSP plant with operating temperatures in a range of 300 to 500° C.

Abstract: Compositions having polyester-polysiloxane copolymers, containing (A) polyolefins which can optionally be substituted and (B) at least one organosilicon compound of the general formula R3-a-b(OR1)aR2 bSi[OSiR2]p[OSiRR2]q[OSiR2 2]rOSiR3-a-b(OR1)aR2 b (I). Along with methods of making the same and products made from the same.

Abstract: The invention provides a process for preparing a mixture (M) which comprises silane-terminated polymers (SP1) of the general formula (I) Y1—[O—C(?O)—NH—(CR12)b—SiRa(OR2)3-a]x??(I), optionally silane-terminated polymers (SP2) of the general formula (II) Y2—[O—C(?O)—NH—(CR12)b—SiRa(OR2)3-a]z??(II) and hydroxy-functional polymers (SP3) of the general formula (III) Y2—[O—C(?O)—NH—(CR12)b—SiRa(OR2)3-a]z-z1(OH)z1??(III) where Y1 and Y2 are polymer radicals and R, R1, R2, x, z, z1, a and b have the definitions indicated in claim 1, wherein, in a first process step, at least one polymer (HP1) of the general formula (IV) Y1—[OH]x??(IV) reacts with at least one isocyanate-functional silane (S) of the general formula (V) O?C?N—(CR12)b—SiRa(OR2)3-a??(V) to give silane-terminated polymers (SP1), and, in a second process step, the unreacted isocyanate groups of the isocyanate-functional silane (S) of the general formula (V) are reacted with at least one oligomer or polymer (HP2) of the ge

Abstract: Crosslinkable compositions based on organopolysiloxanes containing organyloxy groups may have low viscosities and self-leveling properties, and contain (A) organopolysiloxanes containing organyloxy groups of the formula (I) RaR1b(OR2)cSiO(4-a-b-c)/2??(I), (B) organosilicon compounds of the formula (II) (R4O)dSiR3(4-d)??(II), and/or their partial hydrolysates, (C) organosilicon compounds containing basic nitrogen of the formula (III) (R6O)eSiR5(4-e)??(III), and/or their partial hydrolysates, and (D) organosilicon compounds of the formula (IV) (R8O)hSiR7(4-h) and/or their partial hydrolysates.

Abstract: The invention relates to a 3D printing method for the layer-by-layer fabrication of objects using laser transfer printing, and to a 3D printing device for carrying out the method. According to the method, a printing compound (54) applied to a carrier cylinder (51) is irradiated with a laser (50), detached, and transferred to a base plate (27). The resulting printing compound layers are subsequently cured and the process repeated until the object is completely built up. Using said claimed method, objects can be printed from a variety of possible printing materials with high throughput (over 1 kg/h) without affecting the print quality.

Abstract: A process for producing alkyl silicone resins (A) containing at least 80 wt % of units of the general formula (I), R1a(R2O)b(HO)dR3cSiO(4-a-b-c-d)/2 (I), is provided. Alkylalkoxysilane (A1) of the general formula (II), R1aR3cSi(OR2)(4-a-c) (II), is mixed in a first reaction step (R1), alternatively, with a pure acid (S) having pKa of not more than 5, with an at least 5 wt % aqueous solution of an acid (S) having a pKa of not more than 5 or with a halosilane compound (A2) of the general formula (III), R1aR3cSi(X)(4-a-c) (III). Subsequently, in at least one further reaction step, (R2) water is added.

Abstract: Hydrophilic organopolysiloxane gel preparations, methods for making and uses for the hydrophilic organopolysiloxane gel preparations.

Abstract: The present disclosure relates to a hydrogenpolyorganosiloxane of formula X—[SiR12O]m—[SiR1(CaH2a+1)O]n—[SiR1HO]r—[SiR12]—X where a is an arbitrary integer between 6 and 18, n is an arbitrary number between 0.7 and 30, m is an arbitrary number between 10 and 1500, r is an arbitrary number between 0 and 200, R1 is independently at each occurrence a C1-C5 alkyl or phenyl, and X represents one or more groups selected from among hydrogen, alkoxy and hydroxyl, and greater than or equal to 60 mol % of X are hydrogen atoms. The hydrogenpolyorganosiloxane can significantly lower the viscosity and improve the flowability of the resulting silicone composition compared with the existing hydrogenpolyorganosiloxanes at the same thermally conductive filler loading, thereby improving the thermal conductivity.

Abstract: A method of preparing alkyl functionalized polysiloxane, comprising: I) reacting silane oligomer with hydroxyl-terminated polysiloxane in the presence of Catalyst 1, and II) reacting the product of Step (I) with an endcapper in the presence of Catalyst 2. This method could flexibly adjust the polymerization degree and viscosity of the desired long-chain alkyl functionalized polysiloxane for different application fields and introduce multiple alkyl functional groups and further functional groups to obtain bifunctionalized polysiloxane, moreover this method could greatly reduce the proportion of undesired cyclosiloxanes in the equilibrium product and the reaction is mild, easy to operate and environmentally friendly.

Abstract: Oxamide-functional siloxanes are prepared by reacting (A) silanes of the general formula (I) with (B) siloxanes selected from (B1) linear siloxanes of the general formula HO[SiR2O]tH??(II) and (B2) cyclic compounds of the general formula (SiR42O)s??(III), in the presence of (C) catalysts.

Abstract: Subject-matter of the invention is a screen plate for a separating device for classifying bulk material. The screen plate comprises a profile region having a profile having depressions and elevations extending in a direction of a takeoff side, the profile being describable by a circle arc of a first circle K1 and a circle arc of a second circle K2, and the circles K1 and K2 being disposed adjacent to one another, with the circle arc of the first circle K1 with a radius r1 describing elevations and the circle arc of the second circle K2 with a radius r2 describing the depressions. Each depression undergoes transition, in a takeoff region, into an opening which expands in the direction of the takeoff side, the opening having an opening edge with a width corresponding to the length of the radius r2 to 2*r2.

Abstract: Silane-terminated polymers of the formula (I) Y—[Z—C(?O)—NR3—(CR12)b—SiRa(OR2)3-a]x??(I), are produced by reacting at least one hydroxy-functional polymer (a), comprising at least one polyether, polyester and/or polyacrylate unit, with at least one compound having at least one isocyanate group, in the presence of at least one bismuth-containing catalyst (K), with the proviso that the reaction mixture comprises 50 to 250 ppm water at the start of the reaction.

Abstract: Organochlorosilanes are produced by reacting, in a fluidized bed reactor, a chloromethane-containing reactant gas with a particulate contact mass containing silicon and a catalyst, wherein the organochlorosilanes have the general formula (CH3)nHSiCl4-n-m where n=1 to 3 and m=0 or 1, wherein the process is characterized by three dimensions indices K1-K3, which are respectively associated with the reactor, the contact mass, and the reaction conditions, and which are maintained within specified bounds.

Abstract: The method relates to the technical field of organic silicone copolymers, it is suitable for the field of fiber substrate treatment and is more suitable for the field of textile treatment.

Abstract: Non-aggregated carbon-coated silicon particles are prepared, which have average particle diameters d50 of 1 to 15 ?m and contain ?10 wt. % carbon and ?90 wt. % silicon relative to the total weight of the carbon-coated silicon particles, by treating dry mixtures containing silicon particles and one or more polymeric carbon precursors, which contain one or more oxygen atoms and one or more heteroatoms selected from the group consisting of nitrogen, sulfur and phosphorus, in oxidative atmosphere at a temperature of 200 to 400° C. (thermal treatment) and subsequently performing carbonization in inert atmosphere.

Abstract: A lithium-ion battery and a method for pre-lithiating a silicon-containing anode for use therein. The method includes providing a lithium-ion battery including a cathode having a lithium transition metal oxide, an anode, a separator, and an organic electrolyte. Where the end voltage during a battery charging cycle procedure U1 is between 4.35 V and 4.80 V. During subsequent battery charging cycles, the end voltage during discharging of the battery U2 does not drop below 3.01 V and where during subsequent battery charging cycles, the end voltage during charging of the lithium-ion battery U3 is lower than the end voltage during charging of the lithium-ion battery U1. The lithium-ion battery is charged by the cc/cv method and the end voltage during subsequent discharging of the lithium-ion battery U4 is lower than the end voltage during discharging of the lithium-ion battery U2 and does not drop below 3.01 V.

Abstract: A process for preparing siloxanes, wherein at least one alkoxy-organosilicon compound selected from compounds of the general formula (I) and/or from compounds of the general formula (II) is/are reacted in the presence of a cationic silicon and/or germanium compound at a temperature of ?40 to 250° C.

Abstract: A composition for hydrophilic treatment of fibrous substrates that is washfast in terms of softness contains derivatives of amino-functional organopolysiloxanes containing siloxane units of a general formula (I), optionally siloxane units of a general formula (II), siloxane units of general formula (III), and siloxane units of a general formula (IV). Impurities of octamethylcyclotetrasiloxane (D4 cyclics), decamethylcyclopentasiloxane (D5 cyclics) and dodecamethylcyclohexasiloxane (D6 cyclics) are present in proportions of less than 0.1% by weight in each case and after a storage time of 20 days at a temperature of 50° C. the proportions of D4 cyclics, representative of D4, D5 and D6, remain below 0.1% by weight in each case, based in each case on the total weight of the derivatives of amino-functional organopolysiloxanes.