WO2009003806A1 - Verfahren zur umwandlung von si-h-verbindungen in si-halogen-verbindungen - Google Patents
Verfahren zur umwandlung von si-h-verbindungen in si-halogen-verbindungen Download PDFInfo
- Publication number
- WO2009003806A1 WO2009003806A1 PCT/EP2008/057257 EP2008057257W WO2009003806A1 WO 2009003806 A1 WO2009003806 A1 WO 2009003806A1 EP 2008057257 W EP2008057257 W EP 2008057257W WO 2009003806 A1 WO2009003806 A1 WO 2009003806A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compounds
- halogen
- catalysts
- silicon compounds
- general formula
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 title claims description 9
- 239000003054 catalyst Substances 0.000 claims abstract description 20
- 150000003377 silicon compounds Chemical class 0.000 claims abstract description 17
- 229910000039 hydrogen halide Inorganic materials 0.000 claims abstract description 11
- 239000012433 hydrogen halide Substances 0.000 claims abstract description 11
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 9
- 150000004820 halides Chemical class 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 5
- 125000005842 heteroatom Chemical group 0.000 claims abstract description 5
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 5
- 150000004756 silanes Chemical class 0.000 claims description 9
- 229930195733 hydrocarbon Natural products 0.000 claims description 8
- 239000004215 Carbon black (E152) Substances 0.000 claims description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 5
- 229910000041 hydrogen chloride Inorganic materials 0.000 claims description 5
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 claims description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 3
- 125000005843 halogen group Chemical group 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 239000001257 hydrogen Substances 0.000 claims description 3
- 150000004693 imidazolium salts Chemical class 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims 1
- 238000006467 substitution reaction Methods 0.000 abstract 1
- -1 hydrocarbon radical Chemical class 0.000 description 13
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000000460 chlorine Substances 0.000 description 10
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 8
- 229910052801 chlorine Inorganic materials 0.000 description 8
- 239000000203 mixture Substances 0.000 description 5
- CPELXLSAUQHCOX-UHFFFAOYSA-N Hydrogen bromide Chemical compound Br CPELXLSAUQHCOX-UHFFFAOYSA-N 0.000 description 4
- 150000003254 radicals Chemical class 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- YGZSVWMBUCGDCV-UHFFFAOYSA-N chloro(methyl)silane Chemical class C[SiH2]Cl YGZSVWMBUCGDCV-UHFFFAOYSA-N 0.000 description 3
- 150000002367 halogens Chemical group 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- CXWXQJXEFPUFDZ-UHFFFAOYSA-N tetralin Chemical compound C1=CC=C2CCCCC2=C1 CXWXQJXEFPUFDZ-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- NNBZCPXTIHJBJL-UHFFFAOYSA-N decalin Chemical compound C1CCCC2CCCCC21 NNBZCPXTIHJBJL-UHFFFAOYSA-N 0.000 description 2
- PFMKUUJQLUQKHT-UHFFFAOYSA-N dichloro(ethyl)silicon Chemical compound CC[Si](Cl)Cl PFMKUUJQLUQKHT-UHFFFAOYSA-N 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 150000008282 halocarbons Chemical class 0.000 description 2
- 229910000042 hydrogen bromide Inorganic materials 0.000 description 2
- 239000002608 ionic liquid Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 150000001282 organosilanes Chemical class 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 125000002877 alkyl aryl group Chemical group 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 230000029936 alkylation Effects 0.000 description 1
- 238000005804 alkylation reaction Methods 0.000 description 1
- RMRFFCXPLWYOOY-UHFFFAOYSA-N allyl radical Chemical compound [CH2]C=C RMRFFCXPLWYOOY-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000002815 homogeneous catalyst Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000003003 phosphines Chemical group 0.000 description 1
- 125000004437 phosphorous atom Chemical group 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000011949 solid catalyst Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- IBWGNZVCJVLSHB-UHFFFAOYSA-M tetrabutylphosphanium;chloride Chemical compound [Cl-].CCCC[P+](CCCC)(CCCC)CCCC IBWGNZVCJVLSHB-UHFFFAOYSA-M 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- PXXNTAGJWPJAGM-UHFFFAOYSA-N vertaline Natural products C1C2C=3C=C(OC)C(OC)=CC=3OC(C=C3)=CC=C3CCC(=O)OC1CC1N2CCCC1 PXXNTAGJWPJAGM-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/12—Organo silicon halides
- C07F7/121—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20
- C07F7/123—Preparation or treatment not provided for in C07F7/14, C07F7/16 or C07F7/20 by reactions involving the formation of Si-halogen linkages
Definitions
- the invention relates to a process for the conversion of Si-H compounds in Si-halogen compounds in the gas phase with hydrogen halide.
- halosilanes or organohalosilanes are often mixtures, which also contain Si-containing silanes. These silanes may be desired and isolated purely from the mixtures. But they can also be undesirable and must therefore be removed.
- the most common method of separating silane mixtures is distillation. If the boiling points of Si-H-containing silanes and one or more other silanes are quite close together or even an azeotrope is formed, the distillation becomes expensive and expensive.
- EP 423948 A describes the reaction of Si-H-containing organosilanes with hydrogen halide on metal catalysts such as Pd, Pt, Ni to Organohalogensilanen.
- the catalysts are expensive and there is an inactivation of the catalysts by slow oxidation to metal halides instead.
- US 5302736 A for Ag or Au catalysts are described, but the reaction proceeds too slowly.
- US 3754077 A describes the conversion of halosilanes having one or more Si-H bonds in the gas phase with hydrogen halide to solid catalysts such as activated carbon, Al 2 O 3 or SiO 2 in tetrahalosilane. The process is only developed for silanes without organic residues and requires temperatures above 200 ° C.
- the object of the invention is to provide an improved process for the reaction of the Si-H-containing silanes in silanes with modified boiling points.
- the invention relates to a process for the conversion of silicon compounds (H), which have Si-H compounds, into silicon compounds (Cl), the Si-halogen
- the process proceeds at low temperatures and is suitable for all evaporable silicon compounds (H) which have Si-H compounds.
- the catalyst has very long lifetimes and is very easy to handle.
- Preferred silicon compounds (H) having Si-H compounds are organopolysiloxanes, organopolysilanes and especially monosilanes.
- the silanes (H) preferably have the general formula 1
- R is a monovalent, C] _- C] _g hydrocarbon radical, which with
- Halogen radicals may be substituted or a halogen radical and x is 1, 2 or 3.
- Phenyl radicals or C] _Cg-alkyl radicals vinyl or allyl radical, in particular methyl or ethyl radicals.
- Halogen substituents on R are preferably fluorine, chlorine and bromine, in particular chlorine.
- Halogen radicals R are preferably fluorine, chlorine and bromine, in particular chlorine.
- the inventive method is suitable for use in the purification of crude products and prepurified products from the direct synthesis of methylchlorosilanes, in particular methylchlorosilanes, as by-products silicon compounds (H), in particular EtHSiCl2 and optionally further
- the preferred concentration of silicon compounds (H) in the methylchlorosilanes is 10 to 5000 ppm.
- the hydrogen halide used is preferably chlorine or hydrogen bromide, in particular hydrogen chloride.
- catalysts (a) and (b) are preferably used:
- R 1 and R 1 represent an optionally halogen-substituted, optionally heteroatom-containing C 1 -C 4 -g-
- Hydrocarbon radical and X ⁇ and X ⁇ represent a halogen atom.
- RI and R ⁇ can e.g. branched, unbranched or cyclic alkyl radicals and multiple bond systems, such as aryl, alkaryl and aralkyl radicals.
- the radicals R ⁇ - and R ⁇ have 1 to 10 carbon atoms, in particular the radical R ⁇ - and R ⁇ is an alkyl radical having 2 to 8 carbon atoms.
- the halogen atom X ⁇ and X ⁇ is preferably chlorine, bromine or iodine, in particular chlorine.
- catalysts (c) are preferably used: halide salts of positively charged heterocycles in which nitrogen or phosphorus atoms are organically substituted.
- Preferred positively charged heterocycles are imidazolium salts and pyridinium salts, in particular imidazolium salts of general formula 4
- R ° hydrogen and the meanings of R ⁇ and R ⁇ , R ⁇ , R ⁇ and R- ⁇ O have the meanings of R ⁇ and R ⁇ and X ⁇ and X ⁇ have the meanings of X ⁇ and X ⁇ .
- the halogen of the hydrogen halide used corresponds to the halogen of X ⁇ X ⁇ , ⁇ 3 and X ⁇ .
- X ⁇ - X ⁇ , ⁇ 3 and X ⁇ are hydrogen chloride.
- the catalysts (c) are ionic liquids, namely low-melting salts. Their preferred melting points are for the present process at 1 bar at most 150 0 C, preferably at most 100 0 C.
- radicals of the cations of the ionic liquids preferably correspond to the above-described radicals R ⁇ - and R ⁇ .
- the hydrogen halide used is preferably chlorine or hydrogen bromide, in particular hydrogen chloride.
- the catalysts (a), (b), and (c) are preferably used in pure substance, or dissolved in a preferably high-boiling inert organic solvent, preferably hydrocarbon, such as tetralin or decalin.
- the catalysts (a), (b), and (c) can also be used on solid supports.
- Pressure and temperature are variable within wide limits and are preferably adapted to the conditions of an upstream column containing a fraction enriched
- Silicon compounds (H), in particular EtHSiCl2 provides.
- the process according to the invention is preferably carried out at temperatures at which the silicon compounds (Cl) are liquid.
- the process according to the invention is carried out in particular at at least 30 ° C., in particular at least 70 ° C., and preferably at temperatures of at most 160 ° C., in particular at most 120 ° C.
- the process according to the invention is preferably carried out in a tubular reactor, the mixture preferably being fed in vapor form.
- a heated with heat transfer tube reactor of 20 mm inner diameter and 600 mm in length is 80 g
- Tetrabutylphosphonium chloride filled There are 230 g / h of a gaseous Methylchlorsilanfr neglect with 360 ppm ethyldichlorosilane and 1300 ppm C7-Cg hydrocarbons at a heat carrier temperature of 90 0 C and an overpressure of 10 mbar with 1 l / h hydrogen chloride passed through the catalyst. The height of the bubble column adjusts to approx. 500 mm.
- the product condensed over a 30 cm long column with light reflux is analyzed by means of GC. It contains 20 ppm ethyldichlorosilane, the C7-Cg hydrocarbons are not split.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010513837A JP2010531833A (ja) | 2007-07-04 | 2008-06-11 | Si−ハロゲン化合物へのSi−H化合物の転化法 |
US12/665,858 US20100168458A1 (en) | 2007-07-04 | 2008-06-11 | Process for converting si-h compounds to si-halogen compounds |
CN2008800232181A CN102015733A (zh) | 2007-07-04 | 2008-06-11 | 用于将Si-H化合物转化成Si-卤素化合物的方法 |
EP08774062A EP2170908A1 (de) | 2007-07-04 | 2008-06-11 | Verfahren zur umwandlung von si-h-verbindungen in si-halogen-verbindungen |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007030948.3 | 2007-07-04 | ||
DE102007030948A DE102007030948A1 (de) | 2007-07-04 | 2007-07-04 | Verfahren zur Umwandlung von Si-H-Verbindungen in Si-Halogen-Verbindungen |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009003806A1 true WO2009003806A1 (de) | 2009-01-08 |
Family
ID=39738186
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/057257 WO2009003806A1 (de) | 2007-07-04 | 2008-06-11 | Verfahren zur umwandlung von si-h-verbindungen in si-halogen-verbindungen |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100168458A1 (de) |
EP (1) | EP2170908A1 (de) |
JP (1) | JP2010531833A (de) |
KR (1) | KR20100031628A (de) |
CN (1) | CN102015733A (de) |
DE (1) | DE102007030948A1 (de) |
WO (1) | WO2009003806A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021170226A1 (de) * | 2020-02-26 | 2021-09-02 | Wacker Chemie Ag | Halogenierte tetrasilylboranate |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102633827B (zh) * | 2012-04-26 | 2015-01-07 | 江苏大学 | 离子液体催化制备多氯代苯基三氯硅烷的方法 |
CN112638921B (zh) * | 2018-09-06 | 2024-05-14 | 瓦克化学股份公司 | 用于二氯硅烷的脱氢的方法 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3754077A (en) * | 1968-03-28 | 1973-08-21 | Degussa | Process of obtaining silicon tetrahalides |
EP0700920A1 (de) * | 1994-09-08 | 1996-03-13 | Wacker-Chemie GmbH | Verfahren zur Herstellung von wasserstoffhaltigen Methylchlorsilanen |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4985579A (en) | 1989-10-16 | 1991-01-15 | Dow Corning Corporation | Removal of hydrogen-containing silanes from organosilane mixtures |
DE4240717A1 (de) | 1992-12-03 | 1994-06-09 | Wacker Chemie Gmbh | Verfahren zur Entfernung von wasserstoffhaltigen Silanen aus Mehtylchlorsilanen |
DE4241696A1 (de) | 1992-12-10 | 1994-06-16 | Wacker Chemie Gmbh | Verfahren zur Entfernung von wasserstoffhaltigen Silanen aus Silanen |
US5292912A (en) * | 1993-07-19 | 1994-03-08 | Dow Corning Corporation | Catalytic conversion of direct process high-boiling component to chlorosilane monomers in the presence of hydrogen chloride |
US5493042A (en) * | 1995-06-15 | 1996-02-20 | Dow Corning Corporation | Process for removing silanes from by-product stream |
US5629438A (en) * | 1996-09-11 | 1997-05-13 | Dow Corning Corporation | Hydrochlorination process for converting high-boiling residue from direct process to monosilanes |
DE102005019252A1 (de) * | 2005-04-26 | 2006-11-09 | Wacker Chemie Ag | Verfahren zur Herstellung von Organylhydrogensilanen |
-
2007
- 2007-07-04 DE DE102007030948A patent/DE102007030948A1/de not_active Withdrawn
-
2008
- 2008-06-11 WO PCT/EP2008/057257 patent/WO2009003806A1/de active Application Filing
- 2008-06-11 EP EP08774062A patent/EP2170908A1/de not_active Withdrawn
- 2008-06-11 JP JP2010513837A patent/JP2010531833A/ja not_active Withdrawn
- 2008-06-11 CN CN2008800232181A patent/CN102015733A/zh active Pending
- 2008-06-11 KR KR1020107001604A patent/KR20100031628A/ko not_active Application Discontinuation
- 2008-06-11 US US12/665,858 patent/US20100168458A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3754077A (en) * | 1968-03-28 | 1973-08-21 | Degussa | Process of obtaining silicon tetrahalides |
EP0700920A1 (de) * | 1994-09-08 | 1996-03-13 | Wacker-Chemie GmbH | Verfahren zur Herstellung von wasserstoffhaltigen Methylchlorsilanen |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021170226A1 (de) * | 2020-02-26 | 2021-09-02 | Wacker Chemie Ag | Halogenierte tetrasilylboranate |
Also Published As
Publication number | Publication date |
---|---|
US20100168458A1 (en) | 2010-07-01 |
DE102007030948A1 (de) | 2009-01-08 |
EP2170908A1 (de) | 2010-04-07 |
KR20100031628A (ko) | 2010-03-23 |
JP2010531833A (ja) | 2010-09-30 |
CN102015733A (zh) | 2011-04-13 |
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