-
公开(公告)号：WO9936356A3
公开(公告)日：1999-12-09
申请号：PCT/US9900166
申请日：1999-01-13
Applicant: CABOT CORP
Inventor： MENON VINAYAN C , WALLACE STEPHEN , MASKARA ALOK , SMITH DOUGLAS M , KOEHLERT KENNETH C
IPC: C01B33/149 , C01B33/159 , C01B33/18 , C09C1/30
CPC classification number: C01B33/159 , C01B33/149 , C01B33/18 , C01P2002/87 , C01P2002/88 , C01P2004/80 , C01P2006/10 , C01P2006/12 , C01P2006/90 , C09C1/3081 , Y10T428/2995
Abstract: The present invention provides a method of treating silica wherein silica is reacted with a di- or tri-functional organosilane in an aqueous acid medium to provide a crude organosilane-capped silica product containing organosilicon impurities. The organosilicon impurities are extracted from the crude product with an organic liquid to provide a purified product consisting essentially of organosilane-capped silica. The purified product is dried to provide a dry organosilane-capped silica. The aqueous acid medium can include a displacing reagent which displaces at least one reactive functional group of the di- or tri-functional organosilane. The present invention further provides continuous methods of treating silica with di- and tri-functional organosilanes, wherein the organic liquid and/or the organosilicon impurities are recycled and reused.
Abstract translation: 本发明提供了一种处理二氧化硅的方法，其中二氧化硅与含水酸性介质中的二官能或三官能有机硅烷反应，以提供含有有机硅杂质的粗有机硅烷封端二氧化硅产物。 用有机液体从粗产物中提取有机硅杂质，以提供基本上由有机硅烷封端的二氧化硅组成的纯化产物。 将纯化的产物干燥以提供干燥的有机硅烷封端二氧化硅。 含水酸性介质可以包括置换试剂，其置换二官能或三官能有机硅烷的至少一个反应性官能团。 本发明还提供了用二 - 和三官能有机硅烷处理二氧化硅的连续方法，其中有机液体和/或有机硅杂质被再循环和重复使用。
-
公开(公告)号：DE69827951D1
公开(公告)日：2005-01-05
申请号：DE69827951
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： WALLACE STEPHEN , SMITH M , ACKERMAN C
IPC: C01B13/14 , B01J13/00 , C01B33/158
Abstract: Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface treatment. The processes comprise drying a wet gel comprising gel solids and a drying agent to remove the drying agent while minimizing shrinkage of the gel during drying.
-
公开(公告)号：DE69902223T2
公开(公告)日：2003-01-23
申请号：DE69902223
申请日：1999-01-13
Applicant: CABOT CORP
Inventor： MENON C , WALLACE STEPHEN , MASKARA ALOK , SMITH M , KOEHLERT C
IPC: C01B33/149 , C01B33/159 , C01B33/18 , C09C1/30 , C01B33/00
Abstract: The present invention provides a method of treating silica wherein silica is reacted with a di- or tri-functional organosilane in an aqueous acid medium to provide a crude organosilane-capped silica product containing organosilicon impurities. The organosilicon impurities are extracted from the crude product with an organic liquid to provide a purified product consisting essentially of organosilane-capped silica. The purified product is dried to provide a dry organosilane-capped silica. The aqueous acid medium can include a displacing reagent which displaces at least one reactive functional group of the di- or tri-functional organosilane. The present invention further provides-continuous methods of treating silica with di- and tri-functional organosilanes, wherein the organic liquid and/or the organosilicon impurities are recycled and reused.
-
公开(公告)号：AU6968398A
公开(公告)日：1998-10-30
申请号：AU6968398
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： WALLACE STEPHEN , SMITH DOUGLAS M , ACKERMAN WILLIAM C
IPC: C01B13/14 , B01J13/00 , C01B33/158 , B01F13/00
Abstract: Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface treatment. The processes comprise drying a wet gel comprising gel solids and a drying agent to remove the drying agent while minimizing shrinkage of the gel during drying.
-
公开(公告)号：DE69902223D1
公开(公告)日：2002-08-29
申请号：DE69902223
申请日：1999-01-13
Applicant: CABOT CORP
Inventor： MENON C , WALLACE STEPHEN , MASKARA ALOK , SMITH M , KOEHLERT C
IPC: C01B33/149 , C01B33/159 , C01B33/18 , C09C1/30 , C01B33/00
Abstract: The present invention provides a method of treating silica wherein silica is reacted with a di- or tri-functional organosilane in an aqueous acid medium to provide a crude organosilane-capped silica product containing organosilicon impurities. The organosilicon impurities are extracted from the crude product with an organic liquid to provide a purified product consisting essentially of organosilane-capped silica. The purified product is dried to provide a dry organosilane-capped silica. The aqueous acid medium can include a displacing reagent which displaces at least one reactive functional group of the di- or tri-functional organosilane. The present invention further provides-continuous methods of treating silica with di- and tri-functional organosilanes, wherein the organic liquid and/or the organosilicon impurities are recycled and reused.
-
Patent Agency Ranking
公开(公告)号：BR9814240A
公开(公告)日：2002-02-05
申请号：BR9814240
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： SMITH DOUGLAS M , ACKERMAN WILLIAM C , WALLACE STEPHEN , LOKEY ELSBETH R
Abstract: Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to 0.15 g/cc, and/or a tap density of less than or equal to 0.2 g/cc through contact with at least one esterification agent and at least one catalyst. The processes may be utilized to produce low density gel compositions without the need for a supercritical drying step or thermal treatment.
-
公开(公告)号：AU6894898A
公开(公告)日：1998-10-30
申请号：AU6894898
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： KOEHLERT KENNETH C , SMITH DOUGLAS M , ACKERMAN WILLIAM C , WALLACE STEPHEN , KAUL DAVID J
Abstract: A for producing metal oxide and/or organo-metal oxide compositions from metal oxide and organo-metal oxide precursors utilizing a rate modifying drying agent. The process allows metal oxide and/or organo-metal oxide compositions to be produced from a wide variety of metal oxide and organo-metal oxide precursors including metal halides and organometallic halides.
-
公开(公告)号：CA2286149A1
公开(公告)日：1998-10-15
申请号：CA2286149
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： WALLACE STEPHEN , KOEHLERT KENNETH C , SMITH DOUGLAS M , ACKERMAN WILLIAM C , KAUL DAVID J
Abstract: A process for producing metal oxide and/or organo-metal oxide compositions from metal oxide and organo-metal oxide precursors utilizing a rate modifying drying agent. The process allows metal oxide and/or organo-metal oxide compositions to be produced from a wide variety of metal oxide and organometal oxide precursors including metal halides and organometallic halides.
-
公开(公告)号：CA2286147A1
公开(公告)日：1998-10-15
申请号：CA2286147
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： WALLACE STEPHEN , SMITH DOUGLAS M , ACKERMAN WILLIAM C , LOKEY ELSBETH R
Abstract: Processes for producing gel compositions comprising: esterifying a portion of the surface of a gel composition sufficient to produce a gel composition having a rod density of less than or equal to 0.27 g/cc, and/or a tap density of less than or equal to 0.2 g/cc through contact with at least one esterification agent and at least one catalyst. The processes may be utilized to produce low density gel compositions without the need for a supercritical drying step or thermal treatment.
-
公开(公告)号：DE69827951T2
公开(公告)日：2005-11-24
申请号：DE69827951
申请日：1998-04-09
Applicant: CABOT CORP
Inventor： WALLACE STEPHEN , SMITH M , ACKERMAN C
IPC: C01B13/14 , B01J13/00 , C01B33/158
Abstract: Disclosed are processes for producing gel composition which may be utilized to produce low density gel compositions without the need for supercritical drying, thermal treatment or surface treatment. The processes comprise drying a wet gel comprising gel solids and a drying agent to remove the drying agent while minimizing shrinkage of the gel during drying.
-
-
-
-
-
-
-
-
-
Search Results
17
records
(took 0.022 seconds)
