中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

28 records (took 0.022 seconds)

    POLYFUNCTIONAL ORGANOSILANE TREATMENT OF SILICA
    3.
    发明申请
    POLYFUNCTIONAL ORGANOSILANE TREATMENT OF SILICA 审中-公开
    二氧化硅的多功能有机物处理

    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。

    METHOD OF PREPARING HYDROPHOBIC SILICA
    4.
    发明申请
    METHOD OF PREPARING HYDROPHOBIC SILICA 审中-公开
    制备疏水性二氧化硅的方法

    公开(公告)号：WO9936355A3

    公开(公告)日：1999-12-09

    申请号：PCT/US9900161

    申请日：1999-01-13

    Applicant: CABOT CORP

    Inventor： MENON VINAYAN C ,  SMITH DOUGLAS M ,  KOEHLERT KENNETH C

    IPC: C01B33/149 ,  C01B33/159 ,  C01B33/18 ,  C09C1/30

    CPC classification number: C09C1/3081 ,  C01B33/149 ,  C01B33/159 ,  C01B33/18 ,  C01P2002/87 ,  C01P2002/88 ,  C01P2004/80 ,  C01P2006/10 ,  C01P2006/12 ,  C01P2006/90 ,  Y10T428/2995

    Abstract: The present invention provides a method of treating silica, wherein dry silica is contacted with a reaction medium consisting essentially of concentrated aqueous acid and a hydrophobing agent selected from the group consisting of organosiloxanes and organochlorosilanes. The silica is then reacted with the hydrophobing agent in the reaction medium for about 90 minutes or less at a temperature from about 10 DEG C to about 40 DEG C to provide a hydrophobic treated silica. The hydrophobic treated silica then is recovered.

    Abstract translation: 本发明提供了一种处理二氧化硅的方法，其中干二氧化硅与主要由浓酸水溶液和选自有机硅氧烷和有机氯硅烷的疏水剂组成的反应介质接触。 然后使二氧化硅与疏水剂在反应介质中在约10℃至约40℃的温度下反应约90分钟或更少，以提供疏水处理的二氧化硅。 然后回收疏水处理的二氧化硅。

    Polyfunctional organosilane treatment of silica
    5.
    发明专利
    Polyfunctional organosilane treatment of silica 未知

    公开(公告)号：AU2105499A

    公开(公告)日：1999-08-02

    申请号：AU2105499

    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 ,  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.

    Continuous production of silica via ion exchange
    8.
    发明专利
    Continuous production of silica via ion exchange 未知

    公开(公告)号：AU2105299A

    公开(公告)日：1999-08-02

    申请号：AU2105299

    申请日：1999-01-13

    Applicant: CABOT CORP

    Inventor： SMITH DOUGLAS M ,  RODERICK KEVIN ,  MASKARA ALOK ,  KOEHLERT KENNETH C

    IPC: B01J39/04 ,  B01J47/10 ,  B01J49/00 ,  C01B33/143 ,  C01B33/12

    Abstract: A continuous process for the conversion of sodium silicate to silicic acid, wherein a moving bed of a protonated ion exchange resin is contacted with an inlet stream of sodium silicate to provide an outlet stream of silicic acid. The outlet stream of silicic acid produced thereby can be processed into a variety of silica products. The outlet moving bed of spent sodium-enriched ion-exchange resin is continuously regenerated into protonated ion-exchange resin by contacting the spent resin with an inlet stream of acid of sufficient strength to exchange the sodium ions in the spent resin with a proton. The regenerated protonated ion-exchange resin is continuously recycled back into the sodium silicate stream for further production of silicic acid.

    9.
    发明专利
    未知

    公开(公告)号：AT115519T

    公开(公告)日：1994-12-15

    申请号：AT91906293

    申请日：1991-02-28

    Applicant: CABOT CORP

    Inventor： MENASHI JAMEEL ,  KOEHLERT KENNETH C

    IPC: C01B33/12 ,  C03C1/00 ,  C03C3/06 ,  C04B35/14

    Abstract: A process for making non-porous, dense, silica partices having a diameter of about 3 to 1000 microns, a nitrogen B.E.T. surface area less than about 1 m2/g, a total impurity content of less than about 50 ppm and a metal impurity content content of less than about 15 ppm from an aqueous dispersion of fumed silica. The particles are converted into porous particles and sintered in an atmosphere having a water partial pressure of from about 0.2 to about 0.8 atmosphere for temperatures below about 1200 DEG C.

Patent Agency Ranking