- Method for removing methyldichlorosilane and silicon tetrachloride impurities in trimethyl chlorosilane
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The invention relates to a method for removing methyldichlorosilane and silicon tetrachloride impurities in trimethyl chlorosilane, which comprises a hydrosilylation reaction, a partial esterification reaction and a complete esterification reaction. Firstly, a mixture of trimethylsilyl chloride containing methyldichlorosilane and silicon tetrachloride impurities is added to a reactor for hydrosilylation reaction, and the reaction product enters a separation system. The silicon tetrachloride in the mixture is partially esterified and reacted by adding the low-carbon alcohol as an esterifying agent, and the reaction product enters a separation system. Finally, the partially esterified product is further fully esterified to valuable tetraalkoxy silicon products. The high-efficiency recycling of trimethylchlorosilane is realized, and high-value utilization is also realized.
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Paragraph 0093-0096; 0104
(2021/08/25)
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- Synthesis method of cyano-containing organosilicon compound
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The invention relates to the technical field of synthesis of organosilicon compounds and particularly relates to a synthesis method of a cyano-containing organosilicon compound. The synthesis method is characterized by taking chlorinated nitrile and methyl-containing chlorosilane as raw materials, taking dibromoethane as an initiator and reacting through a one-step Grignard reagent method to generate the cyano-containing organosilicon compound. The structural general formula of chlorinated nitrile is ClCH2(CH2)nCN, wherein n is an integer ranging from 0 to 6; the structural general formula ofmethyl-containing chlorosilane is (CH3)mSiCl4-m, wherein m is an integer ranging from 1 to 3. The synthesis method has the advantages that simple and feasible effects are realized, the raw material reaction rate is high, the synthesis period is short, separation of product is easy and the yield and purity of a target product are high.
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Paragraph 0043-0045
(2019/07/01)
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- Cyano-containing chlorosilane synthesis method
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The invention belongs to the field of organosilicon materials and discloses a cyano-containing chlorosilane synthesis method. The cyano-containing chlorosilane synthesis method includes adding copper chloride, a tertiary amine derivative and cyano-containing olefins into a reactor, dropwise adding hydrogen-containing chlorosilane with stirring under protection of nitrogen at 0-10 DEG C, heating to reach 50-120 DEG C after dropwise adding, conducting holding reaction for 3-48 hours, cooling to a room temperature after reaction is completed, and collecting corresponding fractions through reduced-pressure distillation so as to obtain cyano-containing chlorosilane. The cyano-containing chlorosilane compound is synthesized by addition reaction between the cyano-containing olefins and the hydrogen-containing chlorosilane with the copper chloride as a main catalyst and the tertiary amine derivative as a cocatalyst by means of dropwise adding under the mild conditions. The cyano-containing chlorosilane synthesis method has the advantages of high efficiency, high product selectivity, safe and mild reaction conditions, simple and easily available catalysts and low cost.
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Paragraph 0018; 0019; 0020
(2017/08/29)
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- FUNCTIONALIZED SILANES AND ELECTROLYTE COMPOSITIONS AND ELECTROCHEMICAL DEVICES CONTAINING THEM
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Described are compounds of the structure R4-a-Si-(Sp-Y)a-Zb, wherein "a" is integer from 1 to 4; "b" is an integer from 0 to (3 x a); "Z," which is absent when "b "R" or formula (II), wherein each "R" is halogen, C1-6 linear or branched alkyl, alkenyl, or alkynyl or C1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl; each "Sp" C1-15 linear or branched alkylenyl or CMS linear or branched halo-alkylenyl; and each "Y" an organic polar group. Also described are electrolyte compositions containing one or more of these compounds.
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Page/Page column 33; 34
(2016/04/26)
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- NITRILE-SUBSTITUTED SILANES AND ELECTROLYTE COMPOSITIONS AND ELECTROCHEMICAL DEVICES CONTAINING THEM
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Described herein are liquid, organosilicon compounds that including a substituent that is a cyano (—CN), cyanate (—OCN), isocyanate (—NCO), thiocyanate (—SCN) or isothiocyanate (—NCS). The organosilicon compounds are useful in electrolyte compositions and can be used in any electrochemical device where electrolytes are conventionally used.
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Paragraph 0101; 0102
(2014/12/09)
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