WO2008017561A1 - Anlage und verfahren zur kontinuierlichen industriellen herstellung von 3-glycidyloxypropylalkoxysilanen - Google Patents
Anlage und verfahren zur kontinuierlichen industriellen herstellung von 3-glycidyloxypropylalkoxysilanen Download PDFInfo
- Publication number
- WO2008017561A1 WO2008017561A1 PCT/EP2007/056974 EP2007056974W WO2008017561A1 WO 2008017561 A1 WO2008017561 A1 WO 2008017561A1 EP 2007056974 W EP2007056974 W EP 2007056974W WO 2008017561 A1 WO2008017561 A1 WO 2008017561A1
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- WIPO (PCT)
- Prior art keywords
- reactor
- reactors
- reaction
- catalyst
- prereactor
- Prior art date
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Classifications
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- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
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- 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
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- 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
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- C07F7/1804—Compounds having Si-O-C linkages
- C07F7/1872—Preparation; Treatments not provided for in C07F7/20
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- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00851—Additional features
- B01J2219/00869—Microreactors placed in parallel, on the same or on different supports
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00873—Heat exchange
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J2219/00781—Aspects relating to microreactors
- B01J2219/00889—Mixing
Definitions
- the present invention relates to a novel reactor and a plant for the continuous industrial production of 3-glycidyloxypropylalkoxysilanes by reacting allyl glycidyl ether with a HSi compound and a related process.
- Organosilanes such as vinylchloro or vinylalkoxysilanes (EP 0 456 901 A1, EP 0 806 427 A2), chloroalkylchlorosilanes (DE-AS 28 15 316, EP 0 519 181 A1, DE 195 34 853 A1, EP 0 823 434 A1, EP 1 020 473 A2), alkylalkoxysilanes (EP 0 714 901 A1, DE 101 52 284 A1), fluoroalkylalkoxysilanes (EP 0 838 467 A1, DE 103 01 997 A1), aminoalkylalkoxysilanes (DE-OS 27 53 124, EP 0 709 391 A2 , EP 0 849 271 A2, EP 1 209 162 A2, EP 1 295 889 A2), glycidyloxyalkylalkoxysilanes (EP 1 070 721 A2, EP 0 934 947 A2), methacryloxy
- Microstructured reactors as such for example for a continuous production of polyether alcohols (DE 10 2004 013 551 A1) or the synthesis of u. a. Ammonia, methanol, MTBE (WO 03/078052) are known. Also microreactors for catalytic reactions are known (WO 01/54807). However, so far the microreactor technology for the industrial production of organosilanes has been omitted or at least not realized. The tendency of alkoxy- and chlorosilanes to hydrolysis - even with small amounts of moisture - and corresponding caking in a Organosilanher einsstrom probably to be seen as a sustainable problem.
- the hydrosilylation of an HSi-containing component B in particular a hydrogenalkoxysilane
- allyl glycidyl ether (component A) in the presence of a Catalyst C in a simple and economical manner in an industrial scale and continuously in a multi-element reactor (5) based systems
- the multi-element reactor (5) at least two reactor units in the form of interchangeable pre-reactors (5.1) and at least one further Pre-reactors downstream reactor unit (5.3) includes.
- pre-reactors can be used in a particularly advantageous manner, which are equipped with packing, which even more targeted and effective separation of hydrolyzate or particles and thus a reduction in constipation tendency and downtime of the system can be achieved by deposits and caking in the reactor.
- the educts vorzumischen immediately before the multi-element reactor continuously can also be done cold, then heat in the multi-element reactor and there targeted and continuously implement. It is also possible to add a catalyst to the educt mixture. Subsequently, the product can be worked up continuously, z. As in a evaporation, rectification and / or in a Kurzweg- or thin-film evaporator - to name just a few options.
- the heat of reaction liberated in the reaction can be advantageous in the multi-element reactor over the large in relation to the reactor volume Surface of the reactor inner walls and - if provided - are discharged to a heat transfer medium.
- the present invention enables the preservation of process reliability in a comparatively simple and economical manner.
- a drastic process intensification by increased yields of up to 20% could be achieved by higher conversions and selectivities.
- the present reactions were carried out in a stainless steel multi-element reactor.
- the multielement reactor before the start of the actual reaction with the reaction mixture, especially if this one Homogeneous catalyst contains, to rinse, ie preconditioned.
- the present invention thus provides a plant for the continuous industrial implementation of a reaction in which allyl glycidyl ether A is reacted with an HSi compound B in the presence of a catalyst C and optionally further auxiliaries and the plant is at least prepared on the reactant (3) for the components A ( 1) and B (2), at least one multielement reactor (5) which in turn contains at least two reactor units in the form of at least one replaceable prereactor (5.1) and at least one further reactor unit (5.3) connected downstream of the prereactor system, and on a product recycle (8). based.
- the present invention furthermore relates to a multielement reactor (5) for reacting hydrolyzable silanes, in particular those containing H-Si units, which in turn has at least two reactor units in the form of at least one replaceable prereactor (5.1) and at least one further reaction unit connected downstream of the prereactor system (5.3).
- Prereactors (5.1) are preferred, which are equipped with packing.
- Suitable fillers are, for example, but not limited to structured fillers, ie regular or irregular particles of the same or different size, preferably having an average particle size of ⁇ 1/3, more preferably 1/5 to 1/100 of the free cross section of Cross-sectional area of the respective reactor unit (5.1) and the average particle cross-sectional area preferably 100 to 10 ⁇ 6 mm 2 corresponds, such as chips, fibers / wool, spheres, splinters, strands with round or approximately circular or polygonal cross-section, spirals, cylinders, tubes, cups , Saddles, Honeycombs, Plates, Grids, fabrics, open-pored sponges, irregular shaped or hollow bodies, (structural) packings or containers of the aforementioned structural bodies, spherical bodies of metal, metal oxide, ceramic, glass or plastic, wherein said packing, for example - but not exclusively - made of steel , Stainless steel, titanium, copper, aluminum, titanium oxide
- FIGS. 1 to 6 show flow diagrams of plants or plant parts as preferred embodiments of the present invention.
- FiguM shows a preferred continuous plant in which the reactant components A and B in the unit (3) are combined, fed to the unit (5), which may contain an immobilized catalyst, where it is reacted and the reaction product in the unit ( 8) is worked up.
- FIG. 2 shows a further preferred embodiment of a continuous plant according to the invention, in which a catalyst C is fed to component B.
- the catalyst can also be fed to the unit (3) or, as can be seen in FIG. 3, the catalyst C metered into a mixture of the components A and B shortly before entry into the multi-reactor unit (5).
- a reactor unit is understood as meaning an element of the multielement reactor (5), each element representing an area or reaction space for the said reaction, cf. for example, (5.1) (reactor unit in the form of a pre-reactor) in Figure 4 and (5.5) [reactor unit of an integrated block reactor (5.3.1)] in Figure 5 and (5.10) [Reactor Unit of a Micro Tubular Heat Exchanger Reactor (5.9)].
- Reactor units of a multielement reactor (5) in the context of the present invention are in particular stainless steel or quartz glass capillaries, stainless steel tubes or well-dimensioned stainless steel reactors, for example pre-reactors (5.1), tubes (5.10) in microtube bundle heat exchanger reactors [e.g. B.
- the inner walls of the reactor elements may be coated, for example with a ceramic layer, a layer of metal oxides, such as Al 2 O 3 , TiO 2 , SiO 2 , ZrO 2 , zeolites, silicates, to name only a few, but also organic polymers, in particular fluoropolymers, such as Teflon, are possible.
- metal oxides such as Al 2 O 3 , TiO 2 , SiO 2 , ZrO 2 , zeolites, silicates, to name only a few, but also organic polymers, in particular fluoropolymers, such as Teflon, are possible.
- a plant according to the invention comprises one or more multi-element reactors (5), which in turn are based on at least 2 to 1,000,000 reactor units, including all natural numbers in between, preferably from 3 to 10,000, in particular from 4 to 1,000 reactor units.
- the reactor or reaction space of at least one reactor unit preferably has a semicircular, semi-oval, round, oval, triangular, square, rectangular or trapezoidal cross-section perpendicular to the flow direction.
- a cross section preferably has a cross-sectional area of 75 ⁇ m 2 to 75 cm 2 .
- Particularly preferred are cross-sectional areas of 0.7 to 120 mm 2 and all numerically intervening numerical values.
- a diameter of> 30 ⁇ m to ⁇ 15 mm, in particular 150 ⁇ m to 10 mm is preferred.
- Square cross-sectional areas preferably have edge lengths of> 30 ⁇ m to ⁇ 15 mm, preferably 0.1 to 12 mm.
- reactor units with differently shaped cross-sectional areas can be present in a multielement reactor (5) of a system according to the invention.
- the structure length in a reactor unit ie from entry of the reaction or product stream into the reactor unit, cf. z. B. (5.1 and 5.1.1) or (5.5 and 5.5.1), until the exit, cf. (5.1.2) or (5.5.2), preferably 5 cm to 500 m, including all numerically intervening numerical values, particularly preferably> 15 cm to 100 m, very particularly preferably 20 cm to 50 m, in particular 25 cm to 30 m.
- reactor units whose respective reaction volume (also referred to as reactor volume, that is to say the product of cross-sectional area and structure length) is 0.01 ml to 100 l, including all numerically intervening numerical values.
- the reactor volume of a reactor unit of a system according to the invention is particularly preferably 0.05 ml to 10 l, very particularly preferably 1 ml to 5 l, very particularly preferably 3 ml to 2 l, in particular 5 ml to 500 ml.
- systems according to the invention can be based on one or more multi-element reactors (5), which are preferably connected in parallel.
- said multi-element reactors (5) can also be switched one behind the other so that the product which originates from the preceding multi-element reactor can be fed to the inlet of the subsequent multi-element reactor.
- Present multielement reactors (5) can advantageously be combined with a reactant component stream (4) or (5.2), which is suitably divided into the respective sub-streams, cf. z. B. (5.4) in Figure 5 and (5.11) in Figure 6, are fed.
- the product streams can be combined, cf. z. B. (5.7) in Figure 5, (5.12) in Figure 6 and (7), and then work up advantageously in a workup unit (8).
- a processing unit (8) initially have a condensation stage or evaporation stage, which follow one or more distillation stages.
- a multielement reactor (5) of a plant according to the invention can be based on at least two parallel connected stainless steel capillaries or on at least two quartz glass capillaries connected in parallel or at least one tube bundle heat exchanger reactor (5.9) or at least one integrated block reactor (5.3.1).
- stainless steel capillaries, reactors or pre-reactors which advantageously consist of a high-strength, high-temperature-resistant and stainless steel; for example, but not exclusively, pre-reactors, capillaries, block reactors, shell-and-tube heat exchanger reactors, etc., are made of type 1 .4571 or 1.4462 steel, cf.
- the steel facing the reaction chamber surface of a stainless steel capillary or a multi-element reactor with a polymer layer, for example a fluorine-containing layer, including Teflon, or a ceramic layer, preferably an optionally porous SiO 2 -, TiO 2 - or AI 2 O 3 layer, in particular for receiving a catalyst be equipped.
- an integrated block reactor as can be seen, for example, as a temperature-controllable block reactor constructed from defined-structured metal plates (also referred to below as a plane) from http://www.heatric.com/phe-construction.html.
- said structured metal plates or planes from which a block reactor can then be produced, can take place, for example, by etching, turning, cutting, milling, embossing, rolling, spark erosion, laser processing, plasma technology or another technique of the processing methods known per se.
- etching turning, cutting, milling, embossing, rolling, spark erosion, laser processing, plasma technology or another technique of the processing methods known per se.
- the respective grooves or joints start on a front side of the metal plate, are continuous and usually end on the opposite end face of the metal plate.
- FIG. 5 shows a plane of an integrated block reactor (5.3.1) with a plurality of reactor units or elements (5.5).
- a level usually consists of a base plate made of metal with metal walls thereon (5.6), the reaction chambers (5.5) together with a cover plate made of metal and a unit for temperature control (6.5, 6.6), preferably a further level or textured metal plate, limit.
- the unit (5.3.1) contains an area (5.4) for feeding and distributing the educt mixture (5.2) into the reactor elements (5.5) and a region (5.7) for combining the product streams from the reaction areas (5.5) and discharging the product stream ( 7).
- an integrated block reactor (5.3.1)
- several such previously described levels may be connected one above the other.
- integrated block reactors (5.3.1) are advantageously surrounded by a temperature control unit (6.5, 6.6), which enables the heating or cooling of the block reactor (5.3.1), ie a targeted temperature control.
- a medium (D) z. B.
- Marlotherm or Mediatherm by means of a heat exchanger (6.7) tempered and fed via line (6.8) a pump (6.9) and line (6.1) of the temperature control unit (6.5) and via (6.6) and (6.2) removed and the heat exchanger unit (6.7 ).
- a heat exchanger 6.7
- the heat of reaction released can be optimally controlled in the shortest possible way, thereby avoiding temperature peaks that adversely affect a targeted reaction.
- a multielement reactor (i) on at least one prereactor (5.1) and at least one stainless steel capillary (5.3) downstream of the prereactor or (ii) on at least one prereactor (5.1) and at least one quartz glass capillary connected downstream of the prereactor (5.3) or (iii) is based on at least one pre-reactor (5.1) and at least one integrated block reactor (5.3 or 5.3.1) or (iv) on at least one pre-reactor (5.1) and at least one microtube bundle heat exchanger reactor (5.3 or 5.9), see. FIG. 4.
- the pre-reactor (5.1) is suitably tempered, that is H. cooled and / or heated, off (D, 6.3, 6.4).
- a prereactor (5.1) in the context of the multi-element reactor (5) in particular for the implementation of silanes, is that in addition to carrying out the continuous reaction by a targeted separation and discharge of hydrolyzates or particles unplanned Stillg , Can advantageously minimize downtime.
- the pre-reactors (5.1) equipped according to the invention can additionally be preceded and / or followed by filters for particle separation.
- a plant according to the invention for the continuous industrial implementation of reactions based on a Eduktzusammen entry (3) for the components A and B, at least one said multi-element reactor (5) and on a product work-up (8), cf. Figures 1, 2 and 3, wherein the multi-element reactor (5) at least two reactor units in the form of replaceable pre-reactors (5.1), which are preferably equipped with packing, and at least one further, the pre-reactor downstream reactor unit (5.3).
- the educt components A and B can each be combined in a targeted manner from a storage unit by means of pumps and optionally by means of differential weighing system in the area (3).
- components A and B are metered at ambient temperature, preferably at 10 to 40 ° C., and mixed in region (3). But you can also preheat at least one of the components, both components or feedstocks or the corresponding mixture.
- the said storage unit can be conditioned and the storage containers can be designed to be temperature-controlled.
- the multielement reactor (5) is preferably brought to or held at the desired operating temperature by means of a temperature control medium D (6.1, 6.2), so that undesirable temperature peaks and temperature fluctuations known from batch systems are advantageously avoided or adequately achieved in the present system according to the invention can become low.
- the product or crude product stream (7) is continuously the product work-up (8), for example, a rectification, fed, for example, over head (10) a low-boiling product F, for example, used in excess and optimally recyclable silane, and on the Swamp (9) a heavy boiling product E can continuously decrease. It is also possible to remove side streams as a product from the unit (8).
- the maximum particle diameter of the suspension catalyst should advantageously be less than 1/3 of the extent of the smallest free cross-sectional area of a reactor unit of the multi-element reactor (5).
- FIG. 2 reveals that it is advantageous to meter in a said catalyst C to component B before it is combined with component A in region (3).
- the educt components A and B can also be further, predominantly liquid auxiliaries, for example-but not exclusively-activators, initiators, stabilizers, inhibitors, solvents or diluents, etc.
- the catalyst C can be present, for example-but not exclusively-on the surface of the reaction space of the respective reactor elements.
- a plant according to the invention for the continuous industrial implementation of the reaction of a said compound A with a compound B is optionally based in the presence of a catalyst and further auxiliaries on at least one reactant combination (3), at least one multi-element reactor (5), which in turn has reactor units (5.1 and 5.3), and on a product work-up (8).
- the reactants or starting materials are provided in a storage unit for carrying out the reaction and fed or metered as required.
- a system according to the invention is equipped with the measuring, metering, shut-off, transport, conveying, monitoring, control units and exhaust gas and waste disposal devices which are conventional in the art.
- system according to the invention can be advantageously accommodated in a portable and stackable container and handled flexibly. So you can bring a system according to the invention quickly and flexibly, for example, to the respective educt or energy sources. With a system according to the invention, but also with all the advantages, it is possible to continuously provide product at the point at which the product is further processed or used further, for example directly at the customer's.
- Another particularly noteworthy advantage of a plant according to the invention for the continuous industrial implementation of a reaction of allyl glycidyl ether (compound A) with an HSi compound B is that it now has a possibility, even small specialty products with Absatzmengen ⁇ between 5 kg and 50 000 t p. a., Preferably 10 kg to 10 000 t p. a., In a simple and economical way to produce continuously and flexibly. In this case, unnecessary downtime, the yield, the selectivity influencing temperature peaks and fluctuations and too long residence times and thus unwanted side reactions can be advantageously avoided. In particular, such an installation can also be used optimally for the production of existing silanes from an economical, ecological and customer-friendly point of view.
- a further subject matter of the present invention is a process for the continuous industrial preparation of a 3-glycidyloxypropylalkoxysilane of the general formula (I) H 2 C (O) CHCH 2 -O- (CH 2 ) 3 -Si (R ') m (OR) 3 - m (I),
- R 'and R independently represent a C 1 to C 4 alkyl group and m is O or 1 or 2,
- reaction of the starting material components A and B is carried out in the presence of a catalyst C and optionally further components in a multi-element reactor (5), which in turn on at least two reactor units in the form of at least one interchangeable prereactor (5.1) and at least one further, the pre-reactor downstream reactor unit (5.3).
- the reaction is preferably carried out in at least one multielement reactor (5) whose reactor units consist of stainless steel or quartz glass or whose reaction spaces are delimited by stainless steel or quartz glass, wherein the surfaces of the reactor units can be coated or occupied, for example with Teflon.
- reactor units whose respective cross-section is semicircular, semi-oval, round, oval, triangular, square, rectangular or trapezoidal.
- reactor units are used whose respective cross-sectional area is 75 ⁇ m 2 to 75 cm 2 .
- reactor units which have a structure length of 5 cm to 200 m, particularly preferably 10 cm to 120 m, very particularly preferably 15 cm to 80 m, in particular 18 cm to 30 m, including all possible numerical values Be included above areas.
- reactor units are suitably used whose respective reaction volume is 0.01 ml to 100 l including all numerically intermediate numerical values, preferably 0.1 ml to 50 l, particularly preferably 1 ml to 20 l, very particularly preferably 2 ml to 10 1, in particular 5 ml to 5 1.
- the said reaction can also advantageously be carried out in a plant with a multielement reactor (5) which (i) has at least two parallel-connected pre-reactors (5.1) and at least one stainless steel capillary downstream of the pre-reactors, or (ii) at least two shunts Prereactors (5.1) and at least one downstream of the pre-reactors quartz glass capillaries or (iii) on at least two parallel connected pre-reactors (5.1) and at least one integrated block reactor (5.3.1) or (iv) on at least two parallel connected pre-reactors (5.1) and at least one Shell-and-tube heat exchanger reactor (5.9) based.
- a multielement reactor (5) which (i) has at least two parallel-connected pre-reactors (5.1) and at least one stainless steel capillary downstream of the pre-reactors, or (ii) at least two shunts Prereactors (5.1) and at least one downstream of the pre-reactors quartz glass capillaries or (iii)
- a multielement reactor (5) which contains at least two replaceable pre-reactors (5.1) according to the invention, these being equipped with fillers, as listed in particular above, for the separation of hydrolysis products of hydrolyzable silanes.
- the process according to the invention is particularly preferably carried out in reactor units made of stainless steel.
- the surface of the reactor units of the multielement reactor which is in contact with the starting material / product mixture is coated with a catalyst.
- the reaction of Components A and B is carried out in the presence of a homogeneous catalyst C
- a homogeneous catalyst C it has surprisingly been found that it is particularly advantageous, the multielement reactor by one or more rinses with a mixture of homogeneous catalyst C and component B or from homogeneous catalyst C and the components A and B or a preconditioning of the plant, for example for 10 to 120 minutes and optionally with a higher catalyst concentration.
- the substances used for the preconditioning of the multielement reactor can be collected and later metered into the educt stream at least proportionally or fed directly to the product work-up and worked up.
- reaction or product mixture can be present in one, two or three phases.
- reaction is preferably carried out in a single-phase, in particular in the liquid phase.
- the process of the invention is advantageously carried out using a multielement reactor at a temperature of 10 to 250 0 C at a pressure of 0.1 to 500 bar abs.
- a multielement reactor at a temperature of 10 to 250 0 C at a pressure of 0.1 to 500 bar abs.
- components A and B in particular a hydrosilylation
- in the multi-element reactor at a temperature of 50 to 200 0 C, preferably at 90 to 180 0 C, in particular at 130 to 150 0 C, and at a pressure of 0 , 5 to 300 bar abs.
- the differential pressure in a erfi ⁇ du ⁇ gsdorfen system d. H. between Eduktzusammen Entry (3) and product work-up (8), 1 to 10 bar abs.
- a pressure-holding valve in particular when using trimethoxysilane (TMOS).
- TMOS trimethoxysilane
- the reaction can be inventively at a linear velocity (LV) of 1 to 1 ⁇ 10 4 h ⁇ 1 i. N. Perform.
- the flow rate of the stream in the reactor units is preferably in the range of 0.0001 to 1 m / s i. N., more preferably 0.0005 to 0.7 m / s, in particular 0.05 to 0.3 m / s, and all possible numbers within the aforementioned ranges.
- the ratio of reactor surface area (A) to reactor volume (V) is predominant for the reaction according to the invention, an AV ratio of 20 to 5,000 m 2 / m 3 is preferred, including all numerically possible individual values which lie within the stated range -
- the ⁇ / V ratio is a measure of the heat transfer and possible heterogeneous (wall) influences.
- reaction in the process according to the invention is advantageously carried out at a mean residence time (.tau.) Of 10 seconds to 60 minutes, preferably 1 to 30 minutes, more preferably 2 to 20 minutes, in particular 5 to 10 minutes.
- a mean residence time Of 10 seconds to 60 minutes, preferably 1 to 30 minutes, more preferably 2 to 20 minutes, in particular 5 to 10 minutes.
- Particularly suitable as components B in the process according to the invention are hydrogensilanes of the general formula (II)
- R 'and R are independently a C1 to C4 alkyl group and m is 0 or 1 or 2, preferably R is methyl or ethyl and R' is methyl.
- trimethoxysilane or methyldimethoxysilane preference is given to using trimethoxysilane or methyldimethoxysilane.
- components A and B are preferably employed in a molar ratio A to B of 1: 5 to 100: 1, more preferably 1: 4 to 5: 1, very preferably 1: 2 to 2: 1, in particular of 1: 1, 5 to 1, 5: 1, including all possible numerical values within the aforementioned ranges, for example, but not limited to, 1 to 0.7 to 1, 2.
- the process according to the invention is preferably carried out in the presence of a homogeneous catalyst C.
- a homogeneous catalyst C it is also possible to operate the process according to the invention without the addition of a catalyst, in which case a clear decrease in the yield is generally to be expected.
- the process according to the invention is used for carrying out a hydrosilylation reaction for the preparation of organosilanes according to formula (I), in particular homogeneous catalysts from the series Pt complex catalyst, for example those of the Karstedt type, such as Pt (0) -divinyltetramethyldisiloxane in xylene, PtCl 4, H 2 [PtCl 6] and H 2 [PtCl 6] ⁇ 6H 2 O, preferably a "Speyer catalyst", cis- (Ph 3 P) 2 PtCl 2 complex catalysts of Pd, Rh, Ru, Cu, Ag, Au, Ir or those of other transitional or precious metals Complex catalysts in an organic, preferably polar solvent for example - but not exclusively - ethers, such as THF, ketones, such as acetone, alcohols, such as isopropanol, aliphatic or aromatic hydrocarbons, such as toluene, xylene solve.
- an activator for example in the form of an organic or inorganic acid such as HCl, H 2 SO 4 , H 3 PO 4 , mono- or dicarboxylic acids, HCOOH, H 3 C-COOH , Propionic Acid, Oxalic Acid, Succinic Acid, Citric Acid, Benzoic Acid, Phthalic Acid - just to name a few.
- an organic or inorganic acid such as HCl, H 2 SO 4 , H 3 PO 4 , mono- or dicarboxylic acids, HCOOH, H 3 C-COOH , Propionic Acid, Oxalic Acid, Succinic Acid, Citric Acid, Benzoic Acid, Phthalic Acid - just to name a few.
- an organic or inorganic acid to the reaction mixture can take on another advantageous function, for example as a stabilizer or inhibitor of impurities in the trace range.
- the olefin component A is added to the catalyst, based on the metal, preferably in a molar ratio of 2,000,000: 1 to 1,000: 1, more preferably 1,000,000: 1 up to 4 000: 1, in particular from 500 000: 1 to 10 000: 1, and all possible numerical values within the abovementioned ranges.
- an immobilized catalyst or heterogeneous catalyst from the series of transition metals or noble metals or a corresponding multielement catalyst for carrying out the hydrosilylation reaction. So you can, for example - but not exclusively - use precious metal sludge or precious metal on activated carbon. But you can also provide a fixed bed for receiving a heterogeneous catalyst in the field of multi-element reactor. So you can, for example - but not exclusively - synonymous Heterogeneous catalysts on a support, such as spheres, strands, pellets, cylinders, stirrers, etc. from, inter alia, SiO 2 , TiO 2 , Al 2 O 3 , ZrO 2 , bring into the reaction region of the Reaktore ⁇ whatsoever.
- solvents or diluents such as alcohols, aliphatic and aromatic hydrocarbons, ethers, esters, ketones, CHCs, CFCs - to name but a few - can be used as auxiliaries.
- Such adjuvants can be removed from the product, for example, in the product work-up.
- inhibitors as they are known per se or corresponding mixtures, can be used as additional auxiliaries.
- the reactant components A, B and, if appropriate, C are metered in, and optionally further auxiliaries, and the mixture is mixed. It is endeavored to meter a homogeneous catalyst with an accuracy of ⁇ ⁇ 20%, preferably ⁇ ⁇ 10%. In special cases, it is also possible to meter the homogeneous catalyst and optionally further auxiliaries into the mixture of components A and B only shortly before entry into the multielement reactor. Subsequently, it is possible to feed the starting material mixture to the multielement reactor and to react the components under temperature control. However, it is also possible first to rinse or precondition the multielement reactor with a catalyst-containing educt or reactant mixture before the temperature is advanced to carry out the reaction.
- the preconditioning of the multielement reactor can also be carried out under slightly elevated Temperature.
- the product streams (crude product) combined or obtained in the multielement reactor can subsequently be worked up in a product work-up of the plant according to the invention in a suitable manner, for example-but not exclusively-by distillation with rectification.
- the process is preferably operated continuously.
- inventive method using a system according to the invention advantageously continuously with a product output of 5 kg to 50 000 t p. a. and, for example, but not limited to, advantageously producing 3-glycidyloxypropyltrimethoxysilane.
- the plant used for the preparation of 3-glycidyloxypropyltrimethoxysilane consisted essentially of the educt reservoirs, diaphragm pumps, control, measuring and metering units, a T-mixer, two exchangeable exchangeable and filled with packing (stainless steel beads with an average diameter of 1, 5 mm)
- Pre-reactors (diameter 5 mm, length 40 mm, stainless steel), a Titankapillaren (1 mm diameter, 50 m length) a thermostatic bath with temperature control for the pre-reactors and capillary, a pressure relief valve, a continuously operated with N 2 stripping and the educt and required for product, recycling and waste gas discharge lines.
- olefin allyl glycidyl ether
- platinum catalyst 53 g hexachloroplatinic acid hexahydrate in 1 l acetone
- Pt 270,000: 1
- TMOS hydrogentrimethoxysilane
- Olefin 0.9: 1 mixed and continuously fed to the reactor system.
- the pressure was 25 ⁇ 10 bar.
- the system was rinsed with the starting material mixture A + C for 2 hours prior to raising the temperature in the reactor system.
- the temperature was raised in the bath, adjusted in the reactor system to 130 0 C and operated continuously for 14 days.
- samples were taken at intervals from the tube product stream and analyzed by GC-WLD measurements. The conversion, based on TMOS, was 79% and the selectivity, based on the target product, was around 86%.
- the thus obtained stream of reaction product was fed continuously to a stripping column operated with N 2 and hydrosilylation product was taken off continuously.
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Abstract
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/376,786 US20100160649A1 (en) | 2006-08-10 | 2007-07-09 | System and process for continuous industrial preparation of 3-glycidyloxypropylalkoxysilanes |
BRPI0715808-4A BRPI0715808A2 (pt) | 2006-08-10 | 2007-07-09 | instalaÇço e processo para a produÇço industrial contÍnua de 3-glicidilàxi-propil-alcàxi-silanos |
CA002660411A CA2660411A1 (en) | 2006-08-10 | 2007-07-09 | System and process for the continuous industrial preparation of 3-glycidyloxypropylalkoxysilanes |
JP2009523227A JP2010500313A (ja) | 2006-08-10 | 2007-07-09 | 3−グリシジルオキシプロピルアルコキシシランの連続的工業的製造のための設備及び方法 |
EP07787250A EP2049245A1 (de) | 2006-08-10 | 2007-07-09 | Anlage und verfahren zur kontinuierlichen industriellen herstellung von 3-glycidyloxypropylalkoxysilanen |
NO20091036A NO20091036L (no) | 2006-08-10 | 2009-03-09 | System og prosess for kontinuerlig industriell fremstilling av 3-glysidyloksypropylalkoksysilaner |
Applications Claiming Priority (4)
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DE102006037406 | 2006-08-10 | ||
DE102006037406.1 | 2006-08-10 | ||
DE102007023762.8 | 2007-05-22 | ||
DE102007023762A DE102007023762A1 (de) | 2006-08-10 | 2007-05-22 | Anlage und Verfahren zur kontinuierlichen industriellen Herstellung von 3-Glycidyloxypropylalkoxysilanen |
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WO2008017561A1 true WO2008017561A1 (de) | 2008-02-14 |
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Family Applications (1)
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PCT/EP2007/056974 WO2008017561A1 (de) | 2006-08-10 | 2007-07-09 | Anlage und verfahren zur kontinuierlichen industriellen herstellung von 3-glycidyloxypropylalkoxysilanen |
Country Status (10)
Country | Link |
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US (1) | US20100160649A1 (de) |
EP (1) | EP2049245A1 (de) |
JP (1) | JP2010500313A (de) |
KR (1) | KR20090037457A (de) |
BR (1) | BRPI0715808A2 (de) |
CA (1) | CA2660411A1 (de) |
DE (1) | DE102007023762A1 (de) |
NO (1) | NO20091036L (de) |
RU (1) | RU2009107874A (de) |
WO (1) | WO2008017561A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2135844A1 (de) | 2008-06-17 | 2009-12-23 | Evonik Degussa GmbH | Verfahren zur Herstellung höherer Hydridosilane |
DE102008043422B3 (de) | 2008-11-03 | 2010-01-07 | Evonik Degussa Gmbh | Verfahren zur Aufreinigung niedermolekularer Hydridosilane |
DE102009048087A1 (de) | 2009-10-02 | 2011-04-07 | Evonik Degussa Gmbh | Verfahren zur Herstellung höherer Hydridosilane |
CN101862634B (zh) * | 2010-06-29 | 2012-11-14 | 沈阳东方钛业有限公司 | 水解反应器 |
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- 2007-07-09 WO PCT/EP2007/056974 patent/WO2008017561A1/de active Application Filing
- 2007-07-09 BR BRPI0715808-4A patent/BRPI0715808A2/pt not_active Application Discontinuation
- 2007-07-09 KR KR1020097002572A patent/KR20090037457A/ko not_active Application Discontinuation
- 2007-07-09 US US12/376,786 patent/US20100160649A1/en not_active Abandoned
- 2007-07-09 JP JP2009523227A patent/JP2010500313A/ja not_active Ceased
- 2007-07-09 CA CA002660411A patent/CA2660411A1/en not_active Abandoned
- 2007-07-09 EP EP07787250A patent/EP2049245A1/de not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP2049245A1 (de) | 2009-04-22 |
KR20090037457A (ko) | 2009-04-15 |
JP2010500313A (ja) | 2010-01-07 |
RU2009107874A (ru) | 2010-09-20 |
CA2660411A1 (en) | 2008-02-14 |
NO20091036L (no) | 2009-05-07 |
BRPI0715808A2 (pt) | 2013-03-05 |
DE102007023762A1 (de) | 2008-02-14 |
US20100160649A1 (en) | 2010-06-24 |
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