FR2451343A1 - PROCESS FOR THE PREPARATION OF SILICA - Google Patents

PROCESS FOR THE PREPARATION OF SILICA

Info

Publication number
FR2451343A1
FR2451343A1 FR8005522A FR8005522A FR2451343A1 FR 2451343 A1 FR2451343 A1 FR 2451343A1 FR 8005522 A FR8005522 A FR 8005522A FR 8005522 A FR8005522 A FR 8005522A FR 2451343 A1 FR2451343 A1 FR 2451343A1
Authority
FR
France
Prior art keywords
silica
combustible
temperature
silicon compounds
extremely fine
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.)
Pending
Application number
FR8005522A
Other languages
French (fr)
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.)
Wacker Chemie AG
Original Assignee
Wacker Chemie AG
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
Application filed by Wacker Chemie AG filed Critical Wacker Chemie AG
Publication of FR2451343A1 publication Critical patent/FR2451343A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/18—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof
    • C01B33/181—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process
    • C01B33/183—Preparation of finely divided silica neither in sol nor in gel form; After-treatment thereof by a dry process by oxidation or hydrolysis in the vapour phase of silicon compounds such as halides, trichlorosilane, monosilane
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/12—Surface area
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Abstract

L'INVENTION CONCERNE UN PROCEDE DE PREPARATION DE SILICE EN PARTICULES EXTREMEMENT FINES PAR REACTION, DANS LA FLAMME, DE COMPOSES DU SILICIUM GAZEUX COMBUSTIBLES AVEC DE L'OXYGENE LIBRE. ON FAIT PASSER A L'ETAT DE VAPEUR OU DE GAZ DES COMPOSES DU SILICIUM COMBUSTIBLES, PAR EXEMPLE DU TRICHLOROSILANE, DU METHYL-TRICHLOROSILANE OU ENCORE DES TETES OU DES QUEUES DE LA DISTILLATION DE PRODUITS PROVENANT D'UNE SYNTHESE DE ROCHOW-MULLER, SOUS UNE PRESSION DE 1,2 A 2,2 BARS, EN MAINTENANT CONSTANT LE NIVEAU DU LIQUIDE DANS L'EVAPORATEUR, ON LES MELANGE AVEC DE L'AIR ET DE LA VAPEUR D'EAU A UNE TEMPERATURE AU MOINS EGALE A LEUR TEMPERATURE D'EBULLITION ET, SANS AJOUTER DE COMBUSTIBLES SUPPLEMENTAIRES, ON LES BRULE DE MANIERE A OBTENIR DE LA SILICE EN PARTICULES EXTREMEMENT FINES. ON PEUT UTILISER CETTE SILICE POUR EPAISSIR DES LIQUIDES POLAIRES OU NON POLAIRES, ET EGALEMENT COMME CHARGES DE RENFORCEMENT, PLUS SPECIALEMENT POUR DES ELASTOMERES DE POLYORGANOSILOXANES.THE INVENTION RELATES TO A PROCESS FOR PREPARING SILICA IN EXTREMELY FINE PARTICLES BY REACTION, IN THE FLAME, OF GASEOUS SILICON COMPOUNDS COMBUSTIBLE WITH FREE OXYGEN. COMBUSTIBLE SILICON COMPOUNDS, FOR EXAMPLE TRICHLOROSILANE, METHYL-TRICHLOROSILANE, OR MORE HEADS OR TAILS OF THE DISTILLATION OF PRODUCTS FROM A SYNTHESIS OF ROCHOW-MULLER, ARE TURNED TO THE STATE OF VAPOR OR GAS. A PRESSURE OF 1.2 TO 2.2 BARS, MAINTAINING THE LEVEL OF THE LIQUID IN THE EVAPORATOR CONSTANT, THEY ARE MIXED WITH AIR AND WATER VAPOR AT A TEMPERATURE AT LEAST EQUAL TO THEIR TEMPERATURE. BOILING AND, WITHOUT ADDING ADDITIONAL FUELS, BURNING THEM TO OBTAIN EXTREMELY FINE PARTICLE SILICA. THIS SILICA CAN BE USED TO THICKEN POLAR OR NON-POLAR LIQUIDS, AND ALSO AS REINFORCING FILLERS, MORE SPECIFICALLY FOR POLYORGANOSILOXANE ELASTOMERS.

FR8005522A 1979-03-13 1980-03-12 PROCESS FOR THE PREPARATION OF SILICA Pending FR2451343A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792909815 DE2909815C2 (en) 1979-03-13 1979-03-13 Process for the production of fumed silica

Publications (1)

Publication Number Publication Date
FR2451343A1 true FR2451343A1 (en) 1980-10-10

Family

ID=6065256

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8005522A Pending FR2451343A1 (en) 1979-03-13 1980-03-12 PROCESS FOR THE PREPARATION OF SILICA

Country Status (4)

Country Link
JP (1) JPS5854085B2 (en)
DE (1) DE2909815C2 (en)
FR (1) FR2451343A1 (en)
GB (1) GB2049641A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0529189A2 (en) * 1991-08-26 1993-03-03 Corning Incorporated Method of making fused silica
DE4312750A1 (en) * 1992-05-15 1993-11-18 Eichmueller Hartmut Knock-down containers for transport with reuse facility
EP0706972A1 (en) * 1994-10-11 1996-04-17 Shin-Etsu Chemical Co., Ltd. Preparation of fine particulate silica
EP0790213A1 (en) * 1996-02-15 1997-08-20 Wacker-Chemie GmbH Process for the preparation of silica
EP0987219A1 (en) * 1998-09-16 2000-03-22 Nippon Aerosil Co., Ltd. Ultrafine particle silicon dioxide and process for producing the same
EP1122212A2 (en) * 1999-11-11 2001-08-08 Degussa AG Composite carbon clack-fumed silica nanostructured particles
US6322765B1 (en) 1996-02-15 2001-11-27 Wacker-Chemie Gmbh Process for preparing silicon dioxide
US6376010B1 (en) 1996-12-16 2002-04-23 Corning Incorporated Germanium doped silica forming feedstock and method

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3016010C2 (en) * 1980-04-25 1985-01-10 Degussa Ag, 6000 Frankfurt Process for the pyrogenic production of silica
DE3050746C2 (en) 1980-04-25 1985-03-14 Degussa Ag, 6000 Frankfurt Process for the pyrogenic production of silica
DE3118130A1 (en) * 1981-05-07 1982-12-02 Siemens AG, 1000 Berlin und 8000 München ELECTRICALLY INSULATING ENCLOSURE MEASUREMENT FOR SEMICONDUCTOR ARRANGEMENTS
EP0111008B1 (en) * 1982-06-01 1989-12-27 MITSUI TOATSU CHEMICALS, Inc. Process for manufacturing metal carbides and their precursors
US4801437A (en) * 1985-12-04 1989-01-31 Japan Oxygen Co., Ltd. Process for treating combustible exhaust gases containing silane and the like
GB8905966D0 (en) * 1989-03-15 1989-04-26 Tsl Group Plc Improved vitreous silica products
US5043002A (en) * 1990-08-16 1991-08-27 Corning Incorporated Method of making fused silica by decomposing siloxanes
DE4322804A1 (en) * 1993-07-08 1995-01-12 Wacker Chemie Gmbh Process for the production of highly disperse silica and device for carrying out the process
DE19530339A1 (en) * 1995-08-18 1997-02-20 Degussa Fumed silica, process for its production and use
KR20000076000A (en) 1997-03-07 2000-12-26 알프레드 엘. 미첼슨 Method of making titania-doped fused silica
DE29712026U1 (en) * 1997-07-09 1998-11-12 Ebara Germany Gmbh Burner for the combustion of exhaust gases with at least one condensable component
JP3750728B2 (en) 2000-12-05 2006-03-01 信越化学工業株式会社 Method for producing fine silica
EP1752991B1 (en) * 2004-04-21 2012-11-21 Nuclear Fuel Industries, Ltd. Apparatus for manufacturing coated fuel particle for high temperature gas-cooled reactor
DE102006009953A1 (en) 2006-03-03 2007-09-06 Wacker Chemie Ag Process for the recycling of high-boiling compounds within a chlorosilane composite
CN101679047B (en) 2006-04-28 2012-08-29 卡伯特公司 Process for the production of fumed silica
EP3390308A1 (en) 2015-12-18 2018-10-24 Heraeus Quarzglas GmbH & Co. KG Glass fibers and preforms made of quartz glass having low oh, cl, and al content
CN109153593A (en) 2015-12-18 2019-01-04 贺利氏石英玻璃有限两合公司 The preparation of synthetic quartz glass powder
US11492282B2 (en) 2015-12-18 2022-11-08 Heraeus Quarzglas Gmbh & Co. Kg Preparation of quartz glass bodies with dew point monitoring in the melting oven
US11339076B2 (en) 2015-12-18 2022-05-24 Heraeus Quarzglas Gmbh & Co. Kg Preparation of carbon-doped silicon dioxide granulate as an intermediate in the preparation of quartz glass
CN108698883A (en) 2015-12-18 2018-10-23 贺利氏石英玻璃有限两合公司 The mist projection granulating of silica in quartz glass preparation
TWI812586B (en) 2015-12-18 2023-08-21 德商何瑞斯廓格拉斯公司 Quartz glass body, manufacturing process and application thereof, and process for controlling a dew point at an outlet of an oven
WO2017103166A2 (en) 2015-12-18 2017-06-22 Heraeus Quarzglas Gmbh & Co. Kg Production of a silica glass article in a multichamber furnace
KR20180095619A (en) 2015-12-18 2018-08-27 헤래우스 크바르츠글라스 게엠베하 ＆ 컴파니 케이지 Increase in silicon content during silica glass production
CN108698880B (en) 2015-12-18 2023-05-02 贺利氏石英玻璃有限两合公司 Preparation of opaque quartz glass bodies
US11492285B2 (en) 2015-12-18 2022-11-08 Heraeus Quarzglas Gmbh & Co. Kg Preparation of quartz glass bodies from silicon dioxide granulate

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1074265A (en) * 1952-04-02 1954-10-04 Degussa Process for the preparation of finely divided oxides, apparatus for carrying out the process, and products conforming to those obtained
DE2620737A1 (en) * 1976-05-11 1977-12-01 Wacker Chemie Gmbh METHOD FOR MANUFACTURING SILICON DIOXIDE

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790704A (en) * 1971-10-28 1973-02-15 Degussa PROCESS FOR THE MANUFACTURE OF OXIDES FINE

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1074265A (en) * 1952-04-02 1954-10-04 Degussa Process for the preparation of finely divided oxides, apparatus for carrying out the process, and products conforming to those obtained
DE2620737A1 (en) * 1976-05-11 1977-12-01 Wacker Chemie Gmbh METHOD FOR MANUFACTURING SILICON DIOXIDE
FR2351052A1 (en) * 1976-05-11 1977-12-09 Wacker Chemie Gmbh PROCESS FOR PREPARING SILICON DIOXIDE

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0529189A2 (en) * 1991-08-26 1993-03-03 Corning Incorporated Method of making fused silica
EP0529189A3 (en) * 1991-08-26 1993-09-08 Corning Incorporated Method of making fused silica
DE4312750A1 (en) * 1992-05-15 1993-11-18 Eichmueller Hartmut Knock-down containers for transport with reuse facility
EP0706972A1 (en) * 1994-10-11 1996-04-17 Shin-Etsu Chemical Co., Ltd. Preparation of fine particulate silica
EP0790213A1 (en) * 1996-02-15 1997-08-20 Wacker-Chemie GmbH Process for the preparation of silica
US6322765B1 (en) 1996-02-15 2001-11-27 Wacker-Chemie Gmbh Process for preparing silicon dioxide
US6376010B1 (en) 1996-12-16 2002-04-23 Corning Incorporated Germanium doped silica forming feedstock and method
EP0987219A1 (en) * 1998-09-16 2000-03-22 Nippon Aerosil Co., Ltd. Ultrafine particle silicon dioxide and process for producing the same
US6352679B1 (en) 1998-09-16 2002-03-05 Nippon Aerosil Co., Ltd. Ultrafine particle silicon dioxide and process for producing the same
EP1122212A2 (en) * 1999-11-11 2001-08-08 Degussa AG Composite carbon clack-fumed silica nanostructured particles
EP1122212A3 (en) * 1999-11-11 2002-01-09 Degussa AG Composite carbon clack-fumed silica nanostructured particles

Also Published As

Publication number Publication date
JPS5854085B2 (en) 1983-12-02
GB2049641A (en) 1980-12-31
JPS55121911A (en) 1980-09-19
DE2909815A1 (en) 1980-09-18
DE2909815C2 (en) 1984-11-22

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