EP4077340A1 - Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyse - Google Patents
Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyseInfo
- Publication number
- EP4077340A1 EP4077340A1 EP20823822.0A EP20823822A EP4077340A1 EP 4077340 A1 EP4077340 A1 EP 4077340A1 EP 20823822 A EP20823822 A EP 20823822A EP 4077340 A1 EP4077340 A1 EP 4077340A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- formula
- polysulfanesilanes
- preparation
- phase transfer
- distillation
- 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
Links
- 238000004519 manufacturing process Methods 0.000 title abstract description 10
- 238000003408 phase transfer catalysis Methods 0.000 title description 10
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003444 phase transfer catalyst Substances 0.000 claims abstract description 22
- 238000006243 chemical reaction Methods 0.000 claims abstract description 21
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910000077 silane Inorganic materials 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 13
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 27
- 238000002360 preparation method Methods 0.000 claims description 16
- 239000007857 degradation product Substances 0.000 claims description 15
- 239000008346 aqueous phase Substances 0.000 claims description 13
- 238000001256 steam distillation Methods 0.000 claims description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 10
- 239000011593 sulfur Substances 0.000 claims description 10
- 125000001931 aliphatic group Chemical group 0.000 claims description 8
- 229910052708 sodium Inorganic materials 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 125000001183 hydrocarbyl group Chemical group 0.000 claims description 4
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 238000011065 in-situ storage Methods 0.000 claims description 3
- 125000000027 (C1-C10) alkoxy group Chemical group 0.000 claims description 2
- 125000000008 (C1-C10) alkyl group Chemical group 0.000 claims description 2
- 125000006736 (C6-C20) aryl group Chemical group 0.000 claims description 2
- 125000003358 C2-C20 alkenyl group Chemical group 0.000 claims description 2
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 2
- 125000003342 alkenyl group Chemical group 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052740 iodine Inorganic materials 0.000 claims description 2
- 125000000951 phenoxy group Chemical group [H]C1=C([H])C([H])=C(O*)C([H])=C1[H] 0.000 claims description 2
- 229920000570 polyether Polymers 0.000 claims description 2
- 238000006798 ring closing metathesis reaction Methods 0.000 claims description 2
- 125000001424 substituent group Chemical group 0.000 claims description 2
- 238000004821 distillation Methods 0.000 abstract description 42
- 239000005864 Sulphur Substances 0.000 abstract 1
- IMFACGCPASFAPR-UHFFFAOYSA-N tributylamine Chemical compound CCCCN(CCCC)CCCC IMFACGCPASFAPR-UHFFFAOYSA-N 0.000 description 27
- 238000004817 gas chromatography Methods 0.000 description 24
- 239000000047 product Substances 0.000 description 21
- VTHOKNTVYKTUPI-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyltetrasulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSSSCCC[Si](OCC)(OCC)OCC VTHOKNTVYKTUPI-UHFFFAOYSA-N 0.000 description 21
- FBBATURSCRIBHN-UHFFFAOYSA-N triethoxy-[3-(3-triethoxysilylpropyldisulfanyl)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCSSCCC[Si](OCC)(OCC)OCC FBBATURSCRIBHN-UHFFFAOYSA-N 0.000 description 15
- -1 3-chlorobutyl Chemical group 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 14
- 238000004128 high performance liquid chromatography Methods 0.000 description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 239000007795 chemical reaction product Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000011734 sodium Substances 0.000 description 8
- 125000001340 2-chloroethyl group Chemical group [H]C([H])(Cl)C([H])([H])* 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 7
- 239000003570 air Substances 0.000 description 6
- 238000013112 stability test Methods 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 5
- 239000007864 aqueous solution Substances 0.000 description 5
- 239000002585 base Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 4
- QQQSFSZALRVCSZ-UHFFFAOYSA-N triethoxysilane Chemical compound CCO[SiH](OCC)OCC QQQSFSZALRVCSZ-UHFFFAOYSA-N 0.000 description 4
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- RECJVUVMDRZCPY-UHFFFAOYSA-N diethoxymethoxysilane Chemical compound C(C)OC(O[SiH3])OCC RECJVUVMDRZCPY-UHFFFAOYSA-N 0.000 description 3
- NBBQQQJUOYRZCA-UHFFFAOYSA-N diethoxymethylsilane Chemical compound CCOC([SiH3])OCC NBBQQQJUOYRZCA-UHFFFAOYSA-N 0.000 description 3
- XYYQWMDBQFSCPB-UHFFFAOYSA-N dimethoxymethylsilane Chemical compound COC([SiH3])OC XYYQWMDBQFSCPB-UHFFFAOYSA-N 0.000 description 3
- DRUOQOFQRYFQGB-UHFFFAOYSA-N ethoxy(dimethyl)silicon Chemical compound CCO[Si](C)C DRUOQOFQRYFQGB-UHFFFAOYSA-N 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- VJOOEHFQQLYDJI-UHFFFAOYSA-N methoxy(dimethyl)silane Chemical compound CO[SiH](C)C VJOOEHFQQLYDJI-UHFFFAOYSA-N 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 229910000057 polysulfane Inorganic materials 0.000 description 3
- 150000004756 silanes Chemical class 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KSCAZPYHLGGNPZ-UHFFFAOYSA-N 3-chloropropyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)CCCCl KSCAZPYHLGGNPZ-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000006385 ozonation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 239000005046 Chlorosilane Substances 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- RBFQJDQYXXHULB-UHFFFAOYSA-N arsane Chemical class [AsH3] RBFQJDQYXXHULB-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001944 continuous distillation Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- INQOMBQAUSQDDS-UHFFFAOYSA-N iodomethane Chemical compound IC INQOMBQAUSQDDS-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 150000001282 organosilanes Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 150000003003 phosphines Chemical class 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- ARZGJPVQNURLFJ-UHFFFAOYSA-N silyl thiocyanate Chemical class [SiH3]SC#N ARZGJPVQNURLFJ-UHFFFAOYSA-N 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- TXDNPSYEJHXKMK-UHFFFAOYSA-N sulfanylsilane Chemical class S[SiH3] TXDNPSYEJHXKMK-UHFFFAOYSA-N 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- CQKAPARXKPTKBK-UHFFFAOYSA-N tert-butylazanium;bromide Chemical compound Br.CC(C)(C)N CQKAPARXKPTKBK-UHFFFAOYSA-N 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
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
-
- 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
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
-
- 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
- C07F7/20—Purification, separation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
- B01D3/343—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances the substance being a gas
- B01D3/346—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances the substance being a gas the gas being used for removing vapours, e.g. transport gas
-
- 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
- C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
- C07F7/1892—Preparation; Treatments not provided for in C07F7/20 by reactions not provided for in C07F7/1876 - C07F7/1888
Definitions
- the invention relates to a process for the production of polysulfane silanes by means of phase transfer catalysis.
- the preparation of compounds of the formula Z-Alk-S n -Alk-Z by means of phase transfer catalysis is known from US 5,405,985, US 5,583,245 and US 5,663,396.
- US 5,468,893 discloses the production of polysulfane silanes with phase transfer catalysis in the presence of an alkali halide or alkali sulfate.
- the invention relates to processes for preparing polysulfanesilanes of the formula I (R 1 ) 3-m R 2 m Si-R 3 -S x -R 3 -SiR 2 m (R 1 ) 3-m I where R 1 are identical or different and C1-C10-alkoxy group, phenoxy group or alkyl polyether group - (R'-O) r R “with R 'are identical or different and a branched or unbranched, saturated or unsaturated, aliphatic, aromatic or mixed aliphatic / aromatic double-bonded C1-C30 Are hydrocarbon groups, r is an integer from 1 to 30 and R "is an unsubstituted or substituted, branched or unbranched monovalent alkyl, alkenyl, aryl or aralkyl group,
- R 2 are identical or different and are C6-C20-aryl group, C1-C10-alkyl group, C2-C20-alkenyl group, C7-C20-aralkyl group or halogen,
- Hal CI can preferably be.
- the polysulfanesilane of the formula I can preferably be:
- Phase transfer catalysts of the formula III can be:
- Na 2 CO 3 or NaOH can be used as the base.
- the process according to the invention for the preparation of polysulfanesilanes of the formula I can be carried out at temperatures from 25.degree. C. to 200.degree. C., preferably from 70.degree. C. to 160.degree.
- the phase transfer catalyst of the formula III and then the silane of the formula II can be added to the aqueous phase, prepared by M (SH) y , preferably NaSH, and / or M Z S, preferably Na 2 S, and / or M g S h , a base, preferably NaOH or Na 2 CO 3 and sulfur in aqueous solution / suspension, add.
- M (SH) y and / or M Z S and / or M g S h can be prepared in situ from MOH and sulfur.
- the molar quantitative ratio between the silane of the formula II used and the NaSH used can be between 0.35 and 1.0, preferably between 0.45 and 0.55.
- the molar quantitative ratio between the silane of the formula II used and the base can be between 0.35 and 1.0, preferably between 0.45 and 0.60.
- the molar quantitative ratio between the silane of the formula II used and sulfur can be between 0.4 and 3.0, preferably between 0.5 and 1.5.
- the molar quantitative ratio between the silane of the formula II used and the phase transfer catalyst of the formula III can be between 0.001 and 0.1, preferably between 0.003 and 0.05.
- the process according to the invention for the preparation of polysulfanesilanes of the formula I can be carried out without an organic solvent.
- the aqueous phase used can contain process salts from the preliminary batch.
- some or all of the amount of the phase transfer catalyst of the formula III can be added.
- the remaining amount can be added in portions or continuously, preferably continuously, during the metering in of the silane of the formula II.
- the M (SH) y and / or M Z S and / or M g S h used to prepare polysulfanesilanes of the formula I can be prepared before or during the reaction.
- the aqueous phase can be mixed with the silane of the formula II. Both the aqueous phase can be metered into the silane of the formula II and the silane of the formula II can be metered into the aqueous phase.
- the silane of the formula II is preferably metered into the aqueous phase.
- the silane of the formula II can be added in portions or continuously, preferably continuously.
- the process according to the invention can be carried out in an atmospherically open or closed reaction vessel.
- the contents of the reaction vessel can be mixed.
- External circulations, agitation of the contents of the reaction vessel by gases or stirrers, preferably stirrers, are suitable for mixing the contents of the reaction vessel.
- the process can be carried out continuously or batchwise.
- phase transfer catalyst of the formula III can be added in portions or continuously, preferably continuously, during the reaction.
- the aqueous phase can be separated off from the organic phase.
- the carrier steam generation for the carrier steam distillation can take place in situ or externally, preferably externally.
- the carrier substance used in the carrier vapor distillation can be nitrogen, steam, alcohols or a combination of the aforementioned substances.
- the carrier vapor distillation can be a single-stage distillation, for example still, or multistage distillation, for example several bubbles or column (s) with trays, random packings or a packed column, preferably a packed column.
- the carrier steam distillation can be carried out continuously or batchwise, preferably continuously.
- the carrier vapor distillation can be carried out under vacuum, preferably at a pressure of less than 100 mbar abs.
- the reaction product can be separated from the aqueous phase by phase separation before the carrier vapor distillation.
- the reaction product can be separated from solids, for example NaCl, by filtration before the carrier vapor distillation.
- the reaction product can be purified by distillation before the carrier vapor distillation.
- the top product of the carrier vapor distillation can be used to recover silicon-containing
- degradation products of the phase transfer catalyst of the formula III can be partially or completely removed from the silicon-containing constituents of the top product.
- the degradation products of the phase transfer catalyst of the formula III can be removed from the top product of the carrier vapor distillation by treatment with ozone and / or distillation in any order.
- a further carrier steam distillation can be used as the distillation.
- a distillation to purify the top product can be carried out either as a separate distillation or as an integral part of the carrier vapor distillation.
- the overhead product can be purified by distillation before or after its condensation.
- a distillative purification of the top product can be carried out after a phase separation following the condensation.
- the top product which has been partially or completely freed from the degradation products of the phase transfer catalyst of the formula III can be used both outside the process and in any desired step before the carrier vapor distillation.
- Pure ozone or ozone diluted in other gases for example air, oxygen or nitrogen, preferably air, can be used for the ozone treatment.
- the ozone treatment can be carried out continuously or batchwise, preferably continuously.
- the ozone can be produced by means of an ozone generator.
- the reaction product Before the ozone treatment, the reaction product can be separated from the aqueous phase by phase separation.
- the reaction product can be separated from solids, for example NaCl, by filtration before the ozone treatment.
- the reaction product can be purified by distillation before the ozone treatment. Highly volatile decomposition products from ozonization can be removed from the product by distillation.
- Continuous and discontinuous distillation processes can be used to remove the volatile decomposition products of ozonization by distillation.
- thin-film evaporators can be used for continuous distillation processes.
- carrier vapor distillation and / or ozone treatment can separate or break down the breakdown products of the phase transfer catalyst of the formula III, for example arsines, phosphines or amines, preferably tributylamine, which arise in the PTC process.
- the phase transfer catalyst of the formula III for example arsines, phosphines or amines, preferably tributylamine, which arise in the PTC process.
- a carbon aftertreatment can also be carried out.
- Activated carbon can be used for the carbon aftertreatment.
- the coal aftertreatment can be carried out after the carrier steam distillation and / or after the ozone treatment.
- the carbon aftertreatment can be carried out by adding carbon to the polysulfanesilanes of the formula I and subsequent filtration or by passing polysulfanesilanes of the formula I through a fixed bed containing carbon.
- phase transfer catalyst of the formula III for example tributylamine
- iodine chlorosilanes, peroxides or methyl iodide
- Another object of the invention is the use of a carrier steam distillation and / or ozone treatment to remove degradation products of a phase transfer catalyst.
- phase transfer catalyst preferably a phase transfer catalyst of the formula III
- sulfur-containing organosilanes preferably polysulfanesilanes, thiocyanatosilanes, blocked and unblocked mercaptosilanes.
- the carrier steam distillation and / or ozone treatment can be followed by an activated carbon treatment.
- the advantage of the process according to the invention is the removal of degradation products, some of which are toxic or harmful to health, of the phase transfer catalyst of the formula III in the end product and, associated with this, improved storage stability (color and S distribution).
- GC analytical gas chromatography
- Tetra-n-butylammonium bromide (17 g, 0.03 mol, 0.01 equiv., 50% aqueous solution) and (3-chloropropyl) triethoxysilane (999 g, 4.2 mol, 2.0 equiv.)
- water (249 g) was added and the Phases separated at 71 ° C.
- the crude product (1.1 kg) was obtained as a yellow liquid. Low boilers were then by means of a thin film evaporator at 140 ° C and 10 mbar abs. removed, so that the bis (triethoxysilylpropyl) tetrasulfane was isolated as the bottom product and then filtered.
- Example 1 Carrier vapor distillation of bis (triethoxysilylpropyl) disulfane
- the bis (triethoxysilylpropyl) disulfane from Comparative Example 1 was preheated to 97 ° C. and heated from above at 30 ml / min to a 160 ° C. heated to 20 mbar abs. given evacuated column. In countercurrent, steam and nitrogen were fed in from the lower part of the column, which were distilled off at the upper part of the column via a distillation bridge. The distillate was enriched in tributylamine and the bis (triethoxysilylpropyl) disulfane was isolated as the purified bottom product.
- Example 2 Carrier vapor distillation of bis (triethoxysilylpropyl) tetrasulfane
- Example 4 Carrier vapor distillation of bis (triethoxysilylpropyl) tetrasulfane Several batches of bis (triethoxysilylpropyl) tetrasulfane prepared according to Comparative Example 2 were preheated to 140 ° C. and heated from above at 25 kg / h to a 140 ° C. to 35 mbar abs. given evacuated column. In countercurrent, steam (3 kg / h) and nitrogen (0.5 nL / min) were fed in from the lower part of the column and were distilled off at the upper part of the column via a distillation bridge. The distillate was enriched in tributylamine and the bis (triethoxysilylpropyl) tetrasulfane was isolated as the purified bottom product.
- Output of the ozone generator approx. 130 mg / h in air GC before ozone treatment: 0.1% ethanol, 0.16% tributylamine (breakdown product of the PTC
- Example 7 Activated carbon treatment of bis (triethoxysilylpropyl) disulfane
- Bis (triethoxysilylpropyl) disulfane was treated according to Example 1 by means of the method according to the invention with carrier steam distillation. In the following step, the bis (triethoxysilylpropyl) disulfane from Example 1 was mixed with 1% or 2% activated carbon at room temperature and then filtered. GC before activated carbon: 0.01% tributylamine
- Example 8 Activated carbon treatment of bis (triethoxysilylpropyl) tetrasulfane
- Bis (triethoxysilylpropyl) tetrasulfane was treated according to Example 2 by means of distillation according to the invention with carrier steam distillation. In the following step, the bis (triethoxysilylpropyl) tetrasulfane from Example 2 was mixed with 1% or 2% activated carbon at room temperature and then filtered.
- Example 9 Stability tests of bis (triethoxysilylpropyl) tetrasulfane with 0.28% tributylamine:
- Comparative Example 2 was subjected to a long-term storage stability test.
- the bis (triethoxysilylpropyl) tetrasulfane was analyzed by HPLC at defined time intervals. S2 and S3 levels are not stable after manufacture.
- Example 10 Stability tests of bis (triethoxysilylpropyl) tetrasulfane with ⁇ 0.01% tributylamine:
- Example 2 according to the invention was subjected to a long-term storage stability test.
- the bis (triethoxysilylpropyl) tetrasulfane was analyzed by HPLC at defined time intervals. S2 and S3 levels are stable after manufacture.
- Example 5 according to the invention was subjected to a long-term storage stability test.
- the bis (triethoxysilylpropyl) tetrasulfane was analyzed by HPLC at defined time intervals. S2 and S3 levels are stable after manufacture. HPLC after approx. 1 day: S2 content: 17% by weight, S3 content: 31% by weight,
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Abstract
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EP19217272.4A EP3838905A1 (de) | 2019-12-18 | 2019-12-18 | Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyse |
PCT/EP2020/086042 WO2021122484A1 (de) | 2019-12-18 | 2020-12-14 | Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyse |
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EP4077340A1 true EP4077340A1 (de) | 2022-10-26 |
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EP19217272.4A Withdrawn EP3838905A1 (de) | 2019-12-18 | 2019-12-18 | Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyse |
EP20823822.0A Pending EP4077340A1 (de) | 2019-12-18 | 2020-12-14 | Verfahren zur herstellung von polysulfansilanen mittels phasentransferkatalyse |
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US (1) | US20230039979A1 (de) |
EP (2) | EP3838905A1 (de) |
JP (1) | JP2023507998A (de) |
CN (1) | CN113366003A (de) |
WO (1) | WO2021122484A1 (de) |
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DE3216126A1 (de) * | 1982-04-30 | 1983-11-03 | Cassella Ag, 6000 Frankfurt | Verfahren zur herstellung von disulfiden |
US5468893A (en) | 1994-07-08 | 1995-11-21 | The Goodyear Tire & Rubber Company | Preparation of sulfur-containing organosilicon compounds |
US5405985A (en) | 1994-07-08 | 1995-04-11 | The Goodyear Tire & Rubber Company | Preparation of sulfur-containing organosilicon compounds |
DE19519793C2 (de) * | 1995-05-30 | 1998-02-19 | Projekt Entwicklungs Zentrum I | Verfahren, Reaktor und Vorrichtung zum Abbau von Elastomeren |
US5583245A (en) | 1996-03-06 | 1996-12-10 | The Goodyear Tire & Rubber Company | Preparation of sulfur-containing organosilicon compounds |
US5663396A (en) | 1996-10-31 | 1997-09-02 | The Goodyear Tire & Rubber Company | Preparation of sulfur-containing organosilicon compounds |
US6534668B2 (en) | 2001-06-29 | 2003-03-18 | Dow Corning Corporation | Preparation of sulfur-containing organosilicon compounds using a buffered phase transfer catalysis process |
US6384255B1 (en) | 2001-06-29 | 2002-05-07 | Dow Corning Corporation | Process for the preparation of sulfur-containing organosilicon compounds |
US6448426B1 (en) | 2001-06-29 | 2002-09-10 | Dow Corning Corporation | Process for the preparation of sulfur-containing organosilicon compounds |
US6384256B1 (en) | 2001-06-29 | 2002-05-07 | Dow Corning Corporation | Process for the preparation of sulfur-containing organosilicon compounds |
US6740767B1 (en) | 2002-11-12 | 2004-05-25 | Dow Corning Corporation | Method of making sulfur containing organosilicon compounds |
CN101307069A (zh) * | 2007-05-15 | 2008-11-19 | 德古萨有限责任公司 | 制备丙烯酰氧基烷基烷氧基硅烷的方法,其提纯方法,在组合物中的稳定化方法及其应用 |
DE102008035623A1 (de) * | 2008-07-31 | 2010-02-04 | Evonik Degussa Gmbh | Verfahren zur Herstellung von Organosilanen |
CN104024265B (zh) * | 2011-12-02 | 2017-03-01 | 道康宁公司 | 酯官能化硅烷及其制备和用途;以及亚胺化合物作为相转移催化剂的用途 |
CN103772427B (zh) * | 2014-01-28 | 2016-03-02 | 南京曙光硅烷化工有限公司 | 双[丙基三乙氧基硅烷]二硫化物的制备方法 |
CN108250233A (zh) * | 2018-01-26 | 2018-07-06 | 青岛科技大学 | 一种在水相中制备硅烷偶联剂—Si-69的方法 |
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2019
- 2019-12-18 EP EP19217272.4A patent/EP3838905A1/de not_active Withdrawn
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2020
- 2020-12-14 CN CN202080010900.8A patent/CN113366003A/zh active Pending
- 2020-12-14 JP JP2022537522A patent/JP2023507998A/ja active Pending
- 2020-12-14 WO PCT/EP2020/086042 patent/WO2021122484A1/de unknown
- 2020-12-14 EP EP20823822.0A patent/EP4077340A1/de active Pending
- 2020-12-14 US US17/787,278 patent/US20230039979A1/en active Pending
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US20230039979A1 (en) | 2023-02-09 |
CN113366003A (zh) | 2021-09-07 |
JP2023507998A (ja) | 2023-02-28 |
EP3838905A1 (de) | 2021-06-23 |
WO2021122484A1 (de) | 2021-06-24 |
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