DE1183687B - Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives - Google Patents

Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives

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Publication number
DE1183687B
DE1183687B DEF24464A DEF0024464A DE1183687B DE 1183687 B DE1183687 B DE 1183687B DE F24464 A DEF24464 A DE F24464A DE F0024464 A DEF0024464 A DE F0024464A DE 1183687 B DE1183687 B DE 1183687B
Authority
DE
Germany
Prior art keywords
silane derivatives
production
finely divided
r3six
six4
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
DEF24464A
Other languages
German (de)
Inventor
Dr Klaus Damm
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.)
Bayer AG
Original Assignee
Bayer 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
Priority claimed from DEF24293A external-priority patent/DE1173659B/en
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEF24464A priority Critical patent/DE1183687B/en
Publication of DE1183687B publication Critical patent/DE1183687B/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)

Description

Verfahren zur Herstellung gleichmäßig feinteiliger fester Hydrolyseprodukte aus flüssigen Silanderivaten Zusatz zur Anmeldung: F 24293 IV d/39 c -Auslegeschrift 1 173 659 Gegenstand der Hauptpatentanmeldung F 24 293 IVd/39c (deutsche Auslegeschrift 1173 659) ist ein Verfahren zur Herstellung gleichmäßig feinteiliger fester Hydrolyseprodukte aus flüssigen Silanderivaten der allgemeinen Formel RR'SiX2 (R = Kohlenwasserstoffrest; X = hydrolytisch abspaltbare Gruppe; R' = R oder X oder H), gegebenenfalls im Gemisch mit Verbindungen der Zusammensetzung SiX4, HSiX3 oder R3SiX, durch Umsetzung mit Wasser im Überschuß, das dadurch gekennzeichnet ist, daß man in einem geräumigen Reaktionsgefäß die flüssigen Silanderivate einer Teilchengröße von 10 bis 30 Mikron in freiem Fall durch eine Nebelschicht aus Wassertröpfchen in Größen zwischen 20 und 200 Mikron leitet.Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives Addition to registration: F 24293 IV d / 39 c -Auslegeschrift 1 173 659 the subject of the main patent application F 24 293 IVd / 39c (German Auslegeschrift 1173 659) is a process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives of the general formula RR'SiX2 (R = hydrocarbon radical; X = hydrolytically cleavable group; R '= R or X or H), optionally in a mixture with compounds of the composition SiX4, HSiX3 or R3SiX, by reaction with Water in excess, which is characterized by the fact that one is in a spacious Reaction vessel the liquid silane derivatives with a particle size of 10 to 30 microns in free fall through a fog layer of water droplets in sizes between 20 and conducts 200 microns.

Die sehr feinteiligen festen Polysiloxane, nach diesem Verfahren beispielsweise aus Methyltrichlorsilan oder Gemischen von diesem und Siliciumtetrachlorid gewonnen, sind auf Grund ihrer großen spezifischen Oberfläche sehr gut als Füllstoffe geeignet. The very finely divided solid polysiloxanes, by this process for example from methyltrichlorosilane or mixtures thereof and silicon tetrachloride are very good as fillers due to their large specific surface area suitable.

Es wurde nun ein Verfahren zur Herstellung gleichmäßig feinteiliger fester Hydrolyseprodukte aus flüssigen Silanderivaten der allgemeinen Formel RR'SiX2 (R = Kohlenwasserstoffrest; X = hydrolytisch abspaltbare Gruppe; R' = R oder X oder H), gegebenenfalls im Gemisch mit Verbindungen der Zusammensetzung SiX4, HSiX3 oder R3SiX, durch Umsetzung mit Wasser im Überschuß in weiterer Ausbildung des Verfahrens gemäß der Hauptpatentanmeldung durch Leitung der flüssigen Silanderivate einer Teilchengröße von 10 bis 30 Mikron in freiem Fall durch eine Nebelschicht aus Wassertröpfchen in Größen zwischen 20 und 200 Mikron in einem geräumigen Reaktionsgefäß gefunden, das dadurch gekennzeichnet ist, daß man als Silanderivat ein Gemisch eines solchen der allgemeinen Formel SiX4 und eines solchen der allgemeinen Formel R3SiX (X = hydrolytisch abspaltbare Gruppe; R = Kohlenwasserstoffrest oder Wasserstoff) verwendet. There has now been a process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives of the general formula RR'SiX2 (R = hydrocarbon radical; X = hydrolytically cleavable group; R '= R or X or H), optionally in a mixture with compounds of the composition SiX4, HSiX3 or R3SiX, through reaction with excess water in further development of the process according to the main patent application by conducting the liquid silane derivatives of one particle size from 10 to 30 microns in free fall through a fog layer of water droplets found in sizes between 20 and 200 microns in a spacious reaction vessel, which is characterized in that a mixture of such is used as the silane derivative of the general formula SiX4 and one of the general formula R3SiX (X = hydrolytically cleavable group; R = hydrocarbon radical or hydrogen) is used.

Das Mengenverhältnis der beiden Mischungskomponenten wird so bemessen, daß 2 bis 20 Mol SiX4 auf jedes Mol R3SiX kommen. The proportions of the two components of the mixture are calculated in such a way that that there are 2 to 20 moles of SiX4 for every mole of R3SiX.

Die erfindungsgemäß aus solchen Gemischen hergestellten Siloxanteilchen bestehen aus einem Kern, dessen Zusammensetzung im wesentlichen der Formel (SiO2)» entspricht und der von einer Schale der Zusammensetzung (R3SiO1 ,2)n umschlossen ist. The siloxane particles produced according to the invention from such mixtures consist of a core, the composition of which essentially corresponds to the formula (SiO2) » and which is enclosed by a shell with the composition (R3SiO1, 2) n is.

Infolge dieser organophilen Außenschicht im Verein mit ihrer Feinteiligkeit eignen sich die Produkte als Füllstoffe für Fette, Kunststoffe, Kautschuk und insbesondere für Organosiloxankautschuk und haben dabei den Vorteil, daß ihre Herstellung nur einen verhältnismäßig geringen Anteil der schwieriger zugänglichen siliciumorganischen Komponente erfordert. As a result of this organophilic outer layer in combination with its fine division The products are suitable as fillers for fats, plastics, and rubber in particular for organosiloxane rubber and have thereby the advantage that their production only a relatively small proportion of the more difficult to access organosilicon Component requires.

Mit einer in einfacher Weise, insbesondere unter Anwendung des Wassers in kompakter Form, durchgeführten Hydrolyse von Silangemischen mit überwiegendem Anteil an Siliciumtetrahalogenid sind ähnliche Produkte wie die nach dem erfindungsgemäßen Verfahren gewonnenen nicht zu erzielen; es scheiden sich dabei große Mengen Kieselsäuregel ab. With a simple way, especially with the use of water in compact form, carried out hydrolysis of silane mixtures with predominant Silicon tetrahalide content are similar products to those according to the invention Procedure not to achieve; large amounts of silica gel separate in the process away.

Claims (2)

Patentansprüche: 1. Verfahren zur Herstellung gleichmäßig feinteiliger fester Hydrolyseprodukte aus flüssigen Silanderivaten der allgemeinen Formel RR'SiX2 (R = Kohlenwasserstoffrest; X = hydrolytisch abspaltbare Gruppe; R' = R oder X oder H), gegebenenfalls im Gemisch mit Verbindungen der Zusammensetzung SiX4, HSiX8 oder R3SiX, durch Umsetzung mit Wasser im Überschuß durch Leitung der flüssigen Silanderivate einer Teilchengröße von 10 bis 30 Mikron im freien Fall in einem geräumigen Reaktionsgefäß durch eine Nebelschicht aus Wassertröpfchen in Größen von 20 und 200 Mikron gemäß Hauptpatentanmeldung F 24293 IVd/39c (deutsche Auslegeschrift 1 173 659), dadurch gekennzeichnet, daß man als Silanderivat ein Gemisch eines solchen der allgemeinen Formel SiX4 und eines solchen der allgemeinen Formel R3SiX (X = hydrolytisch abspaltbare Gruppe; R = Kohlenwasserstoffrest oder Wasserstoff) verwendet. Claims: 1. Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives of the general formula RR'SiX2 (R = hydrocarbon radical; X = hydrolytically cleavable group; R '= R or X or H), optionally in a mixture with compounds of the composition SiX4, HSiX8 or R3SiX, through reaction with excess water through conduction of the liquid silane derivatives a particle size of 10 to 30 microns in free fall in a spacious reaction vessel through a fog layer of water droplets in sizes of 20 and 200 microns according to Main patent application F 24293 IVd / 39c (German Auslegeschrift 1 173 659), thereby marked that one as Silane derivative a mixture of such of the general formula SiX4 and one of the general formula R3SiX (X = hydrolytically cleavable group; R = hydrocarbon radical or hydrogen) is used. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Mischungsverhältnis der Silan- derivate auf 2 bis 20 Mol SiX4 auf jedes Mol R3SiX bemessen wird. 2. The method according to claim 1, characterized in that the mixing ratio the silane derivatives to 2 to 20 moles of SiX4 for every mole of R3SiX. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 968 738, 831 694, 859 163; USA.-Patentschrift Nr. 2483 963. Considered publications: German Patent Specifications No. 968 738, 831 694, 859 163; U.S. Patent No. 2483,963.
DEF24464A 1957-10-31 1957-11-25 Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives Pending DE1183687B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF24464A DE1183687B (en) 1957-10-31 1957-11-25 Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF24293A DE1173659B (en) 1957-10-31 1957-10-31 Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives
DEF24464A DE1183687B (en) 1957-10-31 1957-11-25 Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives

Publications (1)

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DE1183687B true DE1183687B (en) 1964-12-17

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DEF24464A Pending DE1183687B (en) 1957-10-31 1957-11-25 Process for the production of uniformly finely divided solid hydrolysis products from liquid silane derivatives

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DE (1) DE1183687B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3337121A1 (en) * 1982-10-12 1984-04-12 Toray Silicone Co., Ltd., Tokyo CURING PRODUCT FROM SPHERICAL PARTICLES AND METHOD FOR THE PRODUCTION THEREOF
DE3905785A1 (en) * 1988-02-26 1989-08-31 Toshiba Silicone FINE POLYORGANOSILSESQUIOXAN PARTICLES AND METHOD FOR THE PRODUCTION THEREOF
DE4406626A1 (en) * 1993-03-12 1994-09-15 Gen Electric Free flowing silicone resin powder and process for its manufacture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483963A (en) * 1948-11-24 1949-10-04 Dow Corning Production of organosiloxanes
DE831694C (en) * 1950-09-22 1952-02-18 Hellmuth Holz Dr Process for hydrolyzing organosilicon compounds
DE968738C (en) * 1953-01-08 1958-03-27 Goldschmidt Ag Th Method and device for the hydrolysis and / or alcoholysis of silicon or titanium compounds

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2483963A (en) * 1948-11-24 1949-10-04 Dow Corning Production of organosiloxanes
DE859163C (en) * 1948-11-24 1952-12-11 Dow Corning Process for the continuous production of organosiloxanes from organochlorosilanes
DE831694C (en) * 1950-09-22 1952-02-18 Hellmuth Holz Dr Process for hydrolyzing organosilicon compounds
DE968738C (en) * 1953-01-08 1958-03-27 Goldschmidt Ag Th Method and device for the hydrolysis and / or alcoholysis of silicon or titanium compounds

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3337121A1 (en) * 1982-10-12 1984-04-12 Toray Silicone Co., Ltd., Tokyo CURING PRODUCT FROM SPHERICAL PARTICLES AND METHOD FOR THE PRODUCTION THEREOF
DE3905785A1 (en) * 1988-02-26 1989-08-31 Toshiba Silicone FINE POLYORGANOSILSESQUIOXAN PARTICLES AND METHOD FOR THE PRODUCTION THEREOF
DE3905785C2 (en) * 1988-02-26 1994-06-09 Toshiba Silicone Process for the production of fine polyorganosilsesquioxane particles
DE4406626A1 (en) * 1993-03-12 1994-09-15 Gen Electric Free flowing silicone resin powder and process for its manufacture
DE4406626B4 (en) * 1993-03-12 2006-02-09 General Electric Co. Process for producing a free-flowing silicone resin powder

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