公开(公告)号：WO1995007858A1

公开(公告)日：1995-03-23

申请号：PCT/US1994010155

申请日：1994-09-13

Applicant: ALLIEDSIGNAL INC.

Inventor： ALLIEDSIGNAL INC. ,  ANDERSON, David, Joseph

IPC: C01B33/18

CPC classification number: C01B33/18 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/52 ,  C01P2004/53 ,  C01P2004/61

Abstract: A process for producing microspheres of silica having a maximum diameter of at least 2.5 mu m particularly about 2.5 mu m to 10 mu m from the hydrolysis of a silica precursor, such as a tetraalkoxysilane, which is characterized by employing precursor solutions and feed rates which initially yield a two-phase reaction mixture and beginning the hydrolysis reaction with solutions cooled below ambient temperatures, preferably below about 10 DEG C. Either monodisperse or polydisperse microspheres may be formed.

Abstract translation: 一种生产二氧化硅微球的方法，其特征在于使用前体溶液和进料速率，其中二氧化硅前体如四烷氧基硅烷的水解，其最大直径至少为2.5μm，特别是约2.5μm至10μm。 最初产生两相反应混合物，并用冷却至低于环境温度，优选低于约10℃的溶液开始水解反应。可以形成单分散或多分散微球体。

公开(公告)号：EP0719237A1

公开(公告)日：1996-07-03

申请号：EP94929162.0

申请日：1994-09-13

Applicant: AlliedSignal Inc.

Inventor： ANDERSON, David, Joseph

IPC: C01B33

CPC classification number: C01B33/18 ,  C01P2004/03 ,  C01P2004/32 ,  C01P2004/52 ,  C01P2004/53 ,  C01P2004/61

Abstract: A process for producing microspheres of silica having a maximum diameter of at least 2.5 νm particularly about 2.5 νm to 10 νm from the hydrolysis of a silica precursor, such as a tetraalkoxysilane, which is characterized by employing precursor solutions and feed rates which initially yield a two-phase reaction mixture and beginning the hydrolysis reaction with solutions cooled below ambient temperatures, preferably below about 10 °C. Either monodisperse or polydisperse microspheres may be formed.