Abstract:
Methods, systems, and computer-readable media for purification of trimethylsilanol (TMSOH) from a hexamethyldisiloxane (HMDSO) impurity present within an initial feedstock material. A salt-out assisted liquid-liquid extraction (SALLE) process may be used including adding an extraction solution, extracting the HMDSO impurity, and separating/washing to remove the extraction solution and water from the feedstock such that an increased purity product is provided.
Abstract:
Provided is an ultraviolet ray irradiation device, in which a flow tube through which a substance to be irradiated with ultraviolet ray flows is wound in a spiral manner around a bar-shaped ultraviolet ray source. Also provided is a method for purifying an organic compound that contains an organic lead compound as an impurity, the method comprising: a step for irradiating the organic compound with ultraviolet ray using the ultraviolet ray irradiation device; and a step for removing a lead component that is generated as the result of the irradiation of the organic lead compound with the ultraviolet ray from the organic compound.
Abstract:
The present invention relates to a production method for a liquid high-purity organosilicon compound, the method comprising the steps of: adding, to a mixture containing an organosilicon compound selected from a group consisting of organomodified silcones and organomodified silanes and impurities, an organic wax having affinity with the impurities and having a higher melting point than the organosilicon compound, melting and mixing while heating, and introducing the impurities into the melted organic wax; obtaining a solidified product of the organic wax by cooling the organic wax; and performing solid/liquid phase separation on the organosilicon compound and the solidified product of the organic wax. With the present invention, it is possible to provide a useful method for producing a high-purity organosilicon compound stably and on a commercial scale.
Abstract:
A process for preparing an acryloyloxysilane, comprising: reacting a metal salt of a carboxylic acid having the formula [CR22═CR1CO−]aMa+ (I), with a haloorganoalkoxysilane having the formula XR3Si(OR4)nR53-n (II) at a temperature of from 50 to 160° C. and in the presence of a catalyst, and in the presence of water, an alcohol comprising 1 to 5 carbon atoms, or a combination of water and an alcohol comprising 1 to 5 carbon atoms, to form a mixture comprising an acryloyloxysilane and a metal halide having the formula Ma+X−a (III), wherein R1 is H, R7COO−Ma+, or C1-C6 hydrocarbyl, each R2 is independently R1 or [COO−]Ma+, Ma+ is an alkali metal cation or alkaline earth metal cation, a is 1 or 2, X is halo, R3 is C1-C6 hydrocarbylene, each R4 is independently C1-C10 hydrocarbyl, each R5 is independently R1 and n is an integer from 1 to 3.
Abstract:
The present invention relates to a method for separating organohalosilanes. The method includes introducing a mixture including at least a first organohalosilane and a second organohalosilane onto a chromatographic bed including a stationary phase. The method also includes passing a liquid mobile phase through the chromatographic bed to produce an eluate including at least one fraction enriched in the first organohalosilane and at least one fraction enriched in the second organohalosilane.
Abstract:
Disclosed is a method for refining trimethylsilane, including the steps of (1) preparing an activated carbon loaded with at least copper (II) oxide and zinc oxide; (2) adsorbing a trimethylsilane onto the activated carbon; and (3) bringing a trimethylsilane containing silane, methylsilane or dimethylsilane as an impurity into contact with the activated carbon finished with the step (2) to remove the impurity from the trimethylsilane by adsorbing the impurity. According to this method, heat generation of the activated carbon is suppressed and impurities such as dimethylsilane, etc. can be removed efficiently.
Abstract:
A process for removing an impurity from a siloxane comprising i) flowing a first liquid through a fiber bundle comprising a plurality of fibers extending lengthwise in a conduit, wherein the bundle has an upstream end and a downstream end, and the first liquid flows in a direction from the upstream end of the bundle to the downstream end; and ii) while continuing (i), flowing a second liquid comprising a siloxane and an impurity through the fiber bundle in a direction from the upstream end of the bundle to the downstream end of the bundle to effect transfer of at least a portion of the impurity from the second liquid to the first liquid, wherein the first liquid and the second liquid are substantially immiscible.
Abstract:
The invention relates to a process for dechlorinating alkylsilanes and siloxanes, and also to the use of basic anion exchanger resins for dechlorinating alkyl silanes and alkylsiloxanes.
Abstract:
This disclosure relates to new metal complexes, such as compounds of Formula 1, and their application in olefin or alkyne metathesis and to methods of carrying out olefin metathesis reactions.
Abstract:
The invention relates to a process for treating a composition containing silicon compounds, especially organosilanes and/or inorganic silanes, and at least one extraneous metal and/or a compound containing extraneous metal, wherein the composition is contacted with at least one adsorbent and/or a first filter and then a composition in which the content of the extraneous metal and/or of the compound containing extraneous metal has been reduced is obtained. The invention further relates to the use of organic resins, activated carbon, silicates and/or zeolites and/or else of at least one filter with small pore sizes to reduce the level of the compounds mentioned.