CA1203667A - Process for hydrophobing pyrogenically produced silicon dioxide - Google Patents

Process for hydrophobing pyrogenically produced silicon dioxide

Info

Publication number
CA1203667A
CA1203667A CA000424544A CA424544A CA1203667A CA 1203667 A CA1203667 A CA 1203667A CA 000424544 A CA000424544 A CA 000424544A CA 424544 A CA424544 A CA 424544A CA 1203667 A CA1203667 A CA 1203667A
Authority
CA
Canada
Prior art keywords
silica
process according
waste gases
fluidized bed
inert gas
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA000424544A
Other languages
English (en)
French (fr)
Inventor
Hans Klebe
Detlev Koth
Dieter Kerner
Josef Schmid
Manfred Schmid
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6159547&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA1203667(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Degussa GmbH filed Critical Degussa GmbH
Application granted granted Critical
Publication of CA1203667A publication Critical patent/CA1203667A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3081—Treatment with organo-silicon compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases
    • C01P2004/84—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic phases one phase coated with the other

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Silicon Compounds (AREA)
CA000424544A 1982-03-27 1983-03-25 Process for hydrophobing pyrogenically produced silicon dioxide Expired CA1203667A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP3211431.1 1982-03-27
DE19823211431 DE3211431A1 (de) 1982-03-27 1982-03-27 Verfahren zur hydrophobierung von pyrogen hergestelltem siliciumdioxid

Publications (1)

Publication Number Publication Date
CA1203667A true CA1203667A (en) 1986-04-29

Family

ID=6159547

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000424544A Expired CA1203667A (en) 1982-03-27 1983-03-25 Process for hydrophobing pyrogenically produced silicon dioxide

Country Status (5)

Country Link
US (1) US4503092A (US07655688-20100202-C00010.png)
EP (1) EP0090125B2 (US07655688-20100202-C00010.png)
JP (1) JPS58181715A (US07655688-20100202-C00010.png)
CA (1) CA1203667A (US07655688-20100202-C00010.png)
DE (2) DE3211431A1 (US07655688-20100202-C00010.png)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4554147A (en) * 1984-04-02 1985-11-19 General Electric Company Method for treating fumed silica
US4661056A (en) * 1986-03-14 1987-04-28 American Hoechst Corporation Turbulent incineration of combustible materials supplied in low pressure laminar flow
JPS63103083U (US07655688-20100202-C00010.png) * 1986-12-23 1988-07-04
DE3912504A1 (de) * 1989-04-17 1990-10-18 Degussa Presslinge auf basis von pyrogen hergestelltem siliciumdioxid, verfahren zu ihrer herstellung und ihre verwendung
US5183710A (en) * 1990-08-30 1993-02-02 U-Sus Distributors, Inc. Hydrophobic inorganic materials and process for making same
DE4142897A1 (de) * 1991-12-23 1993-06-24 Sued Chemie Ag Katalysator-formkoerper
DE4240741A1 (de) * 1992-12-03 1994-06-09 Wacker Chemie Gmbh Verfahren zur Hydrophobierung von pyrogen hergestelltem Siliciumdioxid
DE4419234A1 (de) 1994-06-01 1995-12-07 Wacker Chemie Gmbh Verfahren zur Silylierung von anorganischen Oxiden
DE19620942A1 (de) * 1995-06-05 1996-12-12 Gen Electric Effizientes Verfahren zum Hydrophobieren von anorganischem Pulver
JP3229174B2 (ja) 1995-08-21 2001-11-12 日本アエロジル株式会社 表面改質金属酸化物微粉末およびその製造方法
DE19756840A1 (de) * 1997-01-23 1998-07-30 Degussa Pyrogene Oxide und Verfahren zu ihrer Herstellung
US6120596A (en) * 1997-01-23 2000-09-19 Marconi Data Systems Inc. Method for treating pigment particles to improve dispersibility and particle size distribution
DE19756831A1 (de) 1997-12-19 1999-07-01 Wacker Chemie Gmbh Siliciumdioxid, das an seiner Oberfläche teil- oder vollständig silylierte Polykieselsäureketten trägt
US6030660A (en) * 1997-12-19 2000-02-29 General Electric Company Method of steam stripping an inorganic powder
JP3767672B2 (ja) * 2000-04-21 2006-04-19 信越化学工業株式会社 疎水性二酸化珪素微粉末の製造方法
WO2001083369A1 (fr) 2000-04-28 2001-11-08 Mitsui Chemicals, Inc. Silice poreuse hydrofuge, son procede de preparation et d'utilisation
JP3685250B2 (ja) * 2000-08-31 2005-08-17 信越化学工業株式会社 疎水性二酸化珪素微粉末の製造方法及び製造装置
JP3674683B2 (ja) 2000-08-31 2005-07-20 信越化学工業株式会社 疎水性二酸化珪素微粉末の製造方法
US7785560B2 (en) * 2003-08-20 2010-08-31 Evonik Degussa Gmbh Purification of finely divided, pyrogenically prepared metal oxide particles
CN100506921C (zh) * 2005-03-28 2009-07-01 广州吉必时科技实业有限公司 一种通过连续表面处理制备疏水型纳米二氧化硅的方法
CN100575256C (zh) * 2008-03-07 2009-12-30 南京工业大学 一种超疏水二氧化硅的制备方法
US20100061912A1 (en) * 2008-09-08 2010-03-11 Stephen Michael Lord Apparatus for high temperature hydrolysis of water reactive halosilanes and halides and process for making same
EP2357157B1 (en) 2008-10-01 2020-03-11 Nippon Aerosil Co., Ltd. Hydrophobic silica fine particles and electrophotographic toner composition

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031764B (de) * 1943-01-04 1958-06-12 Erik Torvald Linderoth Verfahren und Vorrichtung zum Nassabscheiden von Teilchen aus Gasen
DE1163784C2 (de) * 1962-03-30 1973-05-03 Degussa Verfahren zur Oberflaechenbehandlung von hochdispersen Oxyden
DE2609487C2 (de) * 1976-03-08 1983-09-15 Wacker-Chemie GmbH, 8000 München Verfahren zur Herstellung von hochdispersem Siliciumdioxyd mit verstärkter Verdickungswirkung

Also Published As

Publication number Publication date
EP0090125B2 (de) 1988-07-06
DE3360084D1 (en) 1985-05-09
JPS58181715A (ja) 1983-10-24
JPS6150882B2 (US07655688-20100202-C00010.png) 1986-11-06
DE3211431A1 (de) 1983-09-29
EP0090125B1 (de) 1985-04-03
US4503092A (en) 1985-03-05
EP0090125A1 (de) 1983-10-05

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Legal Events

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