17980-47-1Relevant articles and documents
A kind of isobutyl triethoxy silane preparation method
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Paragraph 0023; 0024; 0025; 0026; 0045; 0046, (2017/04/03)
The invention discloses a method for preparing isobutyl triethoxy silane, and relates to silane. The method includes the steps of (1) adding active metal, 2-halogenated propane, solvents and initiators into a reactor, and enabling the active metal, the 2-halogenated propane, the solvents and the initiators to be reacted under protection of inert gas, (2) filtering a product obtained in the step (1), taking and adding filtrate into chlorine methyl triethoxy silane to be reacted, and obtaining an isobutyl triethoxy silane coarse product, and (3) carrying out reduced pressure distillation on the preparing isobutyl triethoxy silane coarse product obtained in the step (2), collecting cut fractions at the temperature of 68-71DEG C, and obtaining the high-purity isobutyl triethoxy silane. The method is short in technological process, simple in equipment and easy to operate. The reaction can be carried out at the normal temperature and pressure, and therefore energy consumption is low. Expensive chloroplatinic acid is not required to be used as a catalyst in the reaction process, and therefore the raw material cost is low. The conversion rate of reactants is high, the prepared isobutyl triethoxy silane is high in purity, and the contents of inorganic chlorine are quire few.
Process for preparing low-chloride or chloride-free alkoxysilanes
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, (2008/06/13)
A process for preparing an alkoxysilane with an acidic chloride content of less than 10 ppm by weight, comprising: reacting a chlorosilane with an alcohol in a water-free and solvent-free phase to form a product mixture containing alkoxysilane and residual acidic chloride, with removal of resultant hydrogen chloride from the product mixture, then adding liquid or gaseous ammonia, in an amount corresponding to a stoichiometric excess, based on the content of acidic chloride, to form an ammonia-containing product mixture, treating the ammonia-containing product mixture at a temperature between 10 and 50 DEG C., wherein the ammonia and acidic chloride undergo neutralization, to form a crude product, and optionally, then separating off a salt formed in the course of neutralization, from the crude product, and recovering the alkoxysilane by distilling the crude product.
