Abstract: A process for preparing vinyl acetate-ethylene copolymers in the form of an aqueous dispersion. The process includes providing an aqueous dispersion of vinyl acetate-ethylene copolymers and subjecting the aqueous dispersion of vinyl acetate-ethylene copolymers to radically initiated emulsion polymerization in a continuously operated tubular-reactor. Where one or more dividing plates bearing liquid-permeable openings that are mounted within the tubular-reactor transverse to the flow direction of the reactor contents.

Abstract: A composition includes a peroxidically crosslinked or a condensation crosslinked organopolysiloxane material. The composition includes a silicone polymer. Also, the composition includes at least one of a metal oxide, a metal containing compound, boric acid, or zinc borate. The metal oxide is selected from a group consisting of magnesium oxide, aluminum oxide, tin oxide, calcium oxide, titanium oxide and barium oxide. The metal-containing compound produces a metal oxide of the group on heating. The composition includes a platinum complex containing at least one unsaturated group and 33-100 parts by weight of mica based on 100 parts by weight of the organopolysiloxane material. The composition produces a ceramic material at temperatures of 610° C. or more.

Abstract: Low molecular weight silicone copolymers prepared by reacting an oxamido ester-terminated silicone with a polyetheramine and a primary or secondary amine are useful in treating fabrics to obtain a soft hand and also hydrophilicity, and can be prepared without the use of highly toxic reagents.

Abstract: Chlorosilanes of the general formula HnSiCl4-n and/or HmCl6-mSi2, where n=1-4 and m=0-4, are produced in a fluidized bed reactor by reaction of a hydrogen chloride-containing reaction gas with a silicon contact mass granulation mixture composed of a coarse grain fraction and a fine grain fraction, wherein the average particle size of the fine grain fraction d50,fine is smaller than the average particle size of the coarse grain fraction d50,coarse.

Abstract: Compositions and mixtures along with processes for preparing and uses for the same.

Abstract: Silicon-containing composite particles, the process comprising the steps of: (a) providing a plurality of porous particles comprising micropores and/or mesopores, wherein the D50 particle diameter of the porous particles from 0.5 to 200 ?m; the total pore volume of micropores and mesopores is from 0.4 to 2.2 cm3/g; and the PD50 pore diameter is no more than 30 nm; c (b) combining a charge of the porous particles with a charge of a silicon-containing precursor in a batch pressure reactor, wherein the charge of porous particles has a volume of at least 20 cm3 per litre of reactor volume (cm3/LRV), and wherein the charge of the silicon-containing precursor comprises at least 2 g of silicon per litre of reactor volume (g/LRV); and (c) heating the reactor to a temperature effective to cause deposition of silicon in the pores of the porous particles, thereby providing the silicon-containing composite particles.

Abstract: Processes for preparing aminosiloxanes.

Abstract: Polymeric alkyl silicates along with processes for preparing the same.

Abstract: An aqueous dispersion includes precrosslinked organopolysiloxanes, emulsifiers, and water. The precrosslinked organopolysiloxanes include units of the formula R2SiO2/2 (I), and on average at least one structural unit of the formula SiR1O2/2—Y—SiR1O2/2 (III) where Y is a divalent radical of the formula —R2—[NR3—R4—]nNR3—C(O)—C(O)—NR3—Z—NR3—C(O)—C(O)—NR3—[R4—NR3—]nR2—.

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

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: 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: 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.