Synthesis of P-bi(dimethyl-ethyl-silicone) benzene by sodium condensation
A technology of dimethylethoxysilyl and sodium condensation method, which is applied in chemical instruments and methods, compounds of Group 4/14 elements of the periodic table, organic chemistry, etc. Effects of raw materials and energy consumption
Inactive Publication Date: 2010-12-22
江苏华派新材料科技有限公司
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The purpose of the invention is to adopt improved sodium condensation method to synthesize p-bis(dimethylethoxysilyl) benzene, thereby overcoming the shortcoming that existing method synthesizes p-bis(dimethylethoxysilyl) benzene
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Synthesis of p-bi(methyl ethoxy silicon-base)benzene by sodium condensation is carried out by taking dihalogenated benzene ( X=Cl or Br ) and Me2SiX( OET ) ( X=Cl or Br ) as raw materials, mixing proportionally, dripping into sodium sand suspension with solvent and sodium while agitating to obtain reactant, stratifying, filtering or heating to evaporate out coarse product, and rectifying to obtain final product. It's simple and cheap, has fast reactive speed and shorter reactive period, less consumption, and excellent separation effect.
Description
Technical field The present invention relates to the synthesis of p-bis(dimethylethoxysilyl)benzene by sodium condensation method. Background technique Methylphenyl polysiloxane with phenylene silicon group structure in the main chain has outstanding radiation resistance, high temperature resistance, electrical insulation and physical and mechanical properties. , used as an indispensable and important chemical supporting material for high-energy radiation-resistant sheaths, gaskets, seals and heat-shrinkable tubes. Polysiloxane containing phenylene silicon group structure can be made into special silicone oil with different viscosity, room temperature vulcanized and high temperature vulcanized silicone rubber with different modulus, and can also be made into coatings, adhesives, and electrical insulating varnishes with different hardness. And silicone resin products in various forms such as plastics. Wide application and good effect. P-bis(dimethylalkoxysilyl)benzene (ab...
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IPC IPC(8): C07F7/18
Inventor 张银华王一璐
Owner 江苏华派新材料科技有限公司