公开(公告)号：US5021600A

公开(公告)日：1991-06-04

申请号：US393787

申请日：1989-08-15

申请人： Franco Cardinali ,  Maria G. Longobardi ,  Giuseppe C. Viscomi ,  Alessandra Ziggiotti

发明人： Franco Cardinali ,  Maria G. Longobardi ,  Giuseppe C. Viscomi ,  Alessandra Ziggiotti

IPC分类号： B01J20/283 ,  B01J20/10 ,  B01J20/281 ,  B01J20/32 ,  C07F7/02 ,  C07F7/18 ,  G01N30/88

CPC分类号： C07F7/1896 ,  B01J20/103 ,  B01J20/28004 ,  B01J20/286 ,  B01J20/3071 ,  B01J20/3078 ,  B01J20/3085 ,  B01J20/3092 ,  B01J20/3204 ,  B01J20/3246 ,  B01J2220/54 ,  B01J2220/58

摘要： A new mono-silylating agent of general formula (I)(R.sub.1,R.sub.2,R.sub.3)Si--NH--CO--O--Si(R.sub.1,R.sub.2,R.sub.3) (I)is described as well as its use in the preparation of chromatographic supports based on silica with functional groups covalently bonded thereto, the so-called "bonded stationary phases".The new compounds are easy and safe to prepare from the coresponding mono-halosilanes with ammonium carbamate, and their use as silylating agents leads to stationary phases with a higher degree of surface coating than that attainable with the corresponding chlorosilanes.