公开(公告)号：US5914421A

公开(公告)日：1999-06-22

申请号：US108625

申请日：1998-07-01

申请人： Howard Marvin Bank ,  Robert James Cyr ,  Binh Thanh Nguyen ,  Emmanuel Babatunde

发明人： Howard Marvin Bank ,  Robert James Cyr ,  Binh Thanh Nguyen ,  Emmanuel Babatunde

IPC分类号： C07F7/18 ,  C07F7/20 ,  C07F7/08

CPC分类号： C07F7/20

摘要： A method of preparing an alkoxysilane having reduced halide content. The method comprises contacting a mixture comprising an alkoxysilane and residual halide with a mixture comprising about 1.5 to 15 moles of an alkyl alcohol per mole of residual halide, the alkyl alcohol comprising 1 to about 4 carbon atoms and about 0.1 to 5 moles of an orthoformate per mole of residual halide, to form a mixture comprising additional alkoxysilane and lower boiling species, and separating the lower boiling species and the alkoxysilane. Remaining residual halide may be contacted alkali metal to further reduce the halide content. Alkoxysilanes are useful as catalyst modifiers to manufacture polypropylene.

摘要翻译： 制备卤化物含量降低的烷氧基硅烷的方法。 该方法包括将包含烷氧基硅烷和残余卤化物的混合物与每摩尔残余卤化物包含约1.5至15摩尔烷基醇的混合物，包含1至约4个碳原子的烷基醇和约0.1至5摩尔的原甲酸酯 形成含有另外的烷氧基硅烷和低沸点物质的混合物，并分离低沸点物质和烷氧基硅烷。 剩余的残余卤化物可以与碱金属接触以进一步降低卤化物含量。 烷氧基硅烷可用作制备聚丙烯的催化剂改性剂。