A preparation method of tetramethyl divinyl disilazane

• Main Authors: WANG JIANQIN, WU GUOXIANG, LI CHENGDE, PU WENLUN, FENG JIANHUI
• Format: Patent
• Language: Chinese; English
• Published: 11.06.2019
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMISTRY; METALLURGY; ORGANIC CHEMISTRY

The invention relates to a preparation method of tetramethyl divinyl disilazane, which comprises the following steps: by using dimethyl vinyl ethoxy silane as a raw material, carrying out condensationreaction under the actions of toluene and concentrated sulfuric acid, introducing ammonia gas, ammonifying, and rectifying to obtain tetramethyl divinyl disilazane. According to the method, the yieldand purity of the product can be greatly improved, the raw materials are cheap and easy to obtain, the synthetic route is short, the method is simple and convenient, the reaction conditions are mild,the operation is simple, and the method has a good industrial application prospect. 本发明涉及一种四甲基二乙烯基二硅氮烷的制备方法，所述方法以以二甲基乙烯基乙氧基硅烷为原料，在甲苯和浓硫酸的作用下进行缩合反应，通入氨气进行氨化、精馏制得四甲基二乙烯基二硅氮烷。本发明所述的方法可大大提高产品的收率及纯度，并且原料价廉易得、合成路线短、方法简便、反应条件温和，且操作简单，具有很好的工业应用前景。