公开(公告)号：US08729158B2

公开(公告)日：2014-05-20

申请号：US13041100

申请日：2011-03-04

Applicant: Sheldon B. Davis ,  Angelica M. Sanchez Garcia ,  David Matheu ,  Yakov E. Kutsovsky

Inventor： Sheldon B. Davis ,  Angelica M. Sanchez Garcia ,  David Matheu ,  Yakov E. Kutsovsky

IPC: C08L63/00 ,  C01B33/12

CPC classification number: C01B33/183 ,  B82Y30/00 ,  C01B13/34 ,  C01F7/30 ,  C01P2004/04 ,  C01P2004/45 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/22 ,  C09C1/30 ,  C09C1/3063 ,  C09C1/3081 ,  C09K3/1409

Abstract: The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

Abstract translation: 本发明提供的热解法二氧化硅包括具有聚集体尺寸和表面积的聚集体，所述聚集体尺寸和表面积满足关于聚集体尺寸与表面积的特定公式，以及在分散时显示特定粘度，幂律指数指数和/或弹性模量特性的聚集体 液体介质。 本发明还提供了通过将二氧化硅前体与可燃性气体流合并，燃烧该物流并产生一种燃烧气体和煅制二氧化硅颗粒的方法，其中引入了掺杂剂，时间/温度曲线或 调节燃烧气体流和气相二氧化硅颗粒的历史以允许后淬火聚集体生长，和/或将另外的二氧化硅前体引入燃烧气体流中。

公开(公告)号：US20110204283A1

公开(公告)日：2011-08-25

申请号：US13041100

申请日：2011-03-04

Applicant: Sheldon B. Davis ,  Angelica M. Sanchez Garcia ,  David Matheu ,  Yakov E. Kutsovsky

Inventor： Sheldon B. Davis ,  Angelica M. Sanchez Garcia ,  David Matheu ,  Yakov E. Kutsovsky

IPC: C09C1/28 ,  C09K3/14 ,  C09K13/00

CPC classification number: C01B33/183 ,  B82Y30/00 ,  C01B13/34 ,  C01F7/30 ,  C01P2004/04 ,  C01P2004/45 ,  C01P2004/64 ,  C01P2006/12 ,  C01P2006/22 ,  C09C1/30 ,  C09C1/3063 ,  C09C1/3081 ,  C09K3/1409

Abstract: The invention provides fumed silica comprising aggregates that have an aggregate size and a surface area that satisfy particular formulas relating aggregate size to surface area, as well as aggregates that exhibit particular viscosity, power law exponent index, and/or elastic modulus characteristics when dispersed in liquid media. The invention also provides processes of preparing such fumed silica by combining a silica precursor with a stream of combustible gas, combusting the stream, and producing a stream of combusted gas and fumed silica particles, wherein dopants are introduced, the time/temperature profile, or history, of the stream of combusted gas and fumed silica particles is adjusted to allow for post-quench aggregate growth, and/or additional silica precursor is introduced into the stream of combusted gas.

Abstract translation: 本发明提供的热解法二氧化硅包括具有聚集体尺寸和表面积的聚集体，所述聚集体尺寸和表面积满足关于聚集体尺寸与表面积的特定公式，以及在分散时显示特定粘度，幂律指数指数和/或弹性模量特性的聚集体 液体介质。 本发明还提供了通过将二氧化硅前体与可燃性气体流合并，燃烧该物流并产生一种燃烧气体和煅制二氧化硅颗粒的方法，其中引入了掺杂剂，时间/温度曲线或 调节燃烧气体流和气相二氧化硅颗粒的历史以允许后淬火聚集体生长，和/或将另外的二氧化硅前体引入燃烧气体流中。