降低α系列硅烷偶联剂氯含量的方法  

Method for Reducing the Chlorine Content of Alpha Series Silane Coupling Agents

作　　者：李进红 LI Jinhong

机构地区：[1]潜江宜生新材料有限公司,湖北潜江433131

出　　处：《化工设计通讯》2024年第11期25-27,共3页Chemical Engineering Design Communications

摘　　要：一氯甲基三乙氧基硅烷中微量的二氯甲基三乙氧硅烷与胺类反应速度慢,制成成品后氯元素还在缓慢释放导致偶联剂氯含量超标。将一氯甲基三乙氧基硅烷粗品用镁中和后加入少量的乙醇钠能将其中微量的二氯甲基三乙氧基硅烷破坏完全。在胺基化工艺中反应产生的盐会将原料包裹造成物料反应不完全,将过滤后的物料存放一定时间后可以使反应进行得较彻底。经过二步处理后的最终成品中总氯含量可以降低至50×10^(-6)mg/L以内。Trace amounts of dichloromethyltriethoxysilane in dichloromethyltriethoxysilane react slowly with amines,resulting in slow release of chlorine elements after production,leading to excessive chlorine content in the coupling agent.Neutralizing the crude product of dichloromethyltriethoxysilane with magnesium and adding a small amount of sodium ethanol can completely destroy the trace amount of dichloromethyltriethoxysilane.The salt produced during the amination process will wrap the raw materials,causing incomplete reaction of the materials.Storing thefiltered materials for a certain period of time can make the reaction proceed more thoroughly.The total chlorine content in thefinal product after two-step processing can be reduced to within 50×10^(-6)mg/L.

关 键 词：一氯甲基三乙氧基硅烷 二氯甲基三乙氧基硅烷 镁 乙醇钠 

分 类 号：O636.11[理学—高分子化学]