WO2007042480A1 - Verfahren zur farbzahlverbesserung - Google Patents
Verfahren zur farbzahlverbesserung Download PDFInfo
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- WO2007042480A1 WO2007042480A1 PCT/EP2006/067153 EP2006067153W WO2007042480A1 WO 2007042480 A1 WO2007042480 A1 WO 2007042480A1 EP 2006067153 W EP2006067153 W EP 2006067153W WO 2007042480 A1 WO2007042480 A1 WO 2007042480A1
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- Prior art keywords
- cyclododecatriene
- cyclododecanone
- composition
- hydrogenation
- range
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
- C07C45/62—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by hydrogenation of carbon-to-carbon double or triple bonds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
- C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
- C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties
- C07C45/34—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties in unsaturated compounds
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/56—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds
- C07C45/57—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom
- C07C45/58—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds from heterocyclic compounds with oxygen as the only heteroatom in three-membered rings
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
- C07C45/78—Separation; Purification; Stabilisation; Use of additives
- C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
- C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C49/00—Ketones; Ketenes; Dimeric ketenes; Ketonic chelates
- C07C49/385—Saturated compounds containing a keto group being part of a ring
- C07C49/413—Saturated compounds containing a keto group being part of a ring of a seven- to twelve-membered ring
Definitions
- the present invention relates to a process for purifying a composition (I) containing at least cyclododecanone.
- Cyclododecanone is needed for various applications in high purity.
- cyclododecanone is an important intermediate for the preparation of, for example, laurolactam, dodecanedicarboxylic acid, and polyamides derived therefrom such as nylon 12 or nylon 6.12.
- Cyclododecanone is added, for example, by air oxidation of cyclododecane in the presence of boric acid to cyclododecylborate, hydrolysis of the borate
- Another method is based on the epoxidation of cyclododecatriene, wherein cyclododecanone is obtained from the epoxide after hydrogenation and rearrangement. Such a method is disclosed, for example, in EP 1 018 498 A2.
- DE 103 44 595 A and DE 103 44 594 A describe processes for the preparation of cyclododecanone, in which oxidation takes place with nitrous oxide in one process step.
- EP 0 285 372 A2 discloses a process in which cyclic ketones are purified by irradiation with light. Only cyclopentadecanone is mentioned in the examples.
- the present invention was therefore based on the object to provide a method with which cyclododecanone can be obtained easily and with little effort in high purity, wherein the cyclododecanone has a sufficiently low color number.
- Another object of the present invention was to provide a purification method for cyclododecanone which can be easily combined with known production methods or purification methods for cyclododecanone.
- this object is achieved by a process for purifying a composition (I) comprising at least cyclododecanone, at least comprising step (i)
- composition (I) (i) irradiating the composition (I).
- the wavelength during irradiation can be varied within wide ranges.
- the wavelength of the light used should advantageously be chosen so that the light absorption range of the cyclododecanone coincides with the wavelength of the incident light.
- light is irradiated with a wavelength of 200 to 800 nm, preferably from 250 to 550 nm, in particular from 300 to 470 nm, particularly preferably from 400 to 460 nm.
- the present invention relates to a method as described above for purifying a composition (I) at least comprising cyclododecanone, wherein the irradiation is carried out with light having a wavelength of 200 to 800 nm.
- any suitable radiation source can be used as the light source, in particular a radiation source which emits light of a wavelength between 200 and emits 800 nm.
- a radiation source which emits light of a wavelength between 200 and emits 800 nm.
- Suitable sources of radiation are also UV lamps, xenon lamps, fluorescent lamps, indium lamps or metal halide lamps.
- the duration of the irradiation depends, for example, on the original color number of the composition (I) before the irradiation, on the desired color number or on the wavelength of the irradiated light.
- the irradiation according to step (i) takes place for at least 1 minute.
- a suitable irradiation takes place, for example, for 0.1 to 48 hours, preferably 0.5 to 30 hours, in particular 1 to 24 hours, particularly preferably 1.5 to 12 hours.
- the irradiation according to step (i) is carried out with light of a wavelength of 300 to 470 nm and for
- 0.1 to 20 hours preferably 0.1 to 15 hours, in particular 0.1 to 10 hours, particularly preferably 0.1 to 5 hours. According to another preferred
- the irradiation according to step (i) is carried out with light having a wavelength of 400 to 460 nm and for 0.1 to 10 hours, preferably 0.1 to 5 hours, in particular 0.1 to 2 hours, particularly preferably 0, 1 to 1
- the present invention relates to a method as described above for purifying a composition (I) at least containing cyclododecanone, wherein the irradiation takes place for 0.1 to 48 hours.
- composition (I) may contain further components according to the invention. These may be those which are not attacked in the inventive purification process, and those which are separated in the purification process according to the invention.
- the composition (I) may contain, for example, organic compounds, especially those having oxygen-containing functional groups.
- the composition (I) may contain epoxides, aldehydes, alcohols or diketones, especially cyclic diketones.
- the organic compounds may in particular have the same number of C atoms as the cyclododecanone contained in the composition (I).
- the present invention relates at least to a method for the purification of a composition (I) as described above containing cyclododecanone, wherein the composition (I) contains at least one cyclic diketone.
- the composition contains (I) cyclododecanone usually in an amount of more than 80 wt .-%, preferably 85 to 99.9 wt .-%, in particular 90 to 99.5 wt .-%, particularly preferably 92 to 99 wt. -%.
- the secondary components are in the composition (I) before carrying out the cleaning according to the invention in particular less than 20 wt .-%, in particular less than 15 wt .-%, more preferably less than 10 wt .-%.
- the minor components are contained in an amount of 0.001 to 9 wt .-%, preferably from 0.01 to 5 wt .-%.
- the color number of the composition (I) is improved.
- the composition (I) after the irradiation according to step (i) has a color number of less than 50 apha, for example from 0 to 40 apha, in particular from 1 to 15 apha, preferably from 1 to 5 apha, more preferably from 2 to 10 apha.
- the present invention relates to a method as described above for purifying a composition (I) containing at least cyclododecanone, wherein the composition (I) after the irradiation according to step (i) has a color number of 0 to 40 apha.
- the process according to the invention can be carried out discontinuously but also continuously. It is advantageous if the product to be treated is liquid, but it is not absolutely necessary.
- composition (I) may be dissolved in a solvent and then subjected to the irradiation according to (i).
- the process according to the invention can in principle be carried out at any temperature and pressure.
- the irradiation according to (i) is carried out at atmospheric pressure.
- the irradiation according to (i) can be carried out, for example, at a temperature of below 60 ° C, wherein the product is preferably solid.
- the irradiation according to (i) is carried out at a temperature of above 60 ° C, wherein preferably the composition (I) is liquid.
- the temperature during the irradiation according to (i) is particularly preferably between 62 and 150.degree. C., in particular between 65 and 130.degree.
- the process may also comprise at least one further distillation or crystallization or a distillation and a crystallisation of the composition (I).
- the present invention relates to a method as described above for purifying a composition (I) at least comprising cyclododecanone, the process comprising at least one step (ii):
- step (ii) can be carried out before or after step (i). It is also possible that before and after step (i) a distillation or crystallization according to (ii) takes place.
- distillation and / or crystallization can be carried out by all conventional methods known to the person skilled in the art.
- Suitable solvents for the crystallization according to step (ii) are, for example, alcohols, ethers, hydrocarbons, aromatic hydrocarbons, ketones. If a solvent is used, preference is given to using toluene, xylene, methanol, ethanol, propanol, butanol, acetone, diethyl ketone or methyl tert-butyl ether. Preferably, no solvent is used, but a melt crystallization is carried out.
- the distillative purification can be carried out in one or more columns. It is preferably carried out at pressures between 1 and 2000 mbar, for example between 5 and 500 mbar, more preferably between 10 and 200 mbar.
- the temperatures (bottom temperature) are between 100 and 300 ° C. Preferably between 130 and 250 ° C, more preferably between 150 and 220 ° C.
- the desired product is preferably obtained via a side draw (liquid or gaseous). About swamp high boilers, low boilers are separated overhead. If two columns are used, the desired product, together with high-boiling components, preferably passes via the bottom into the second column, from which it is then recovered overhead or again as side draw. It can also be used dividing wall columns.
- Cyclododecanone having a purity of, for example,> 99.5% can be obtained by the process according to the invention.
- the inventive method can in particular following a basically known manufacturing method or Cleaning procedures for cyclododecanone can be performed. As a result, the inventive method can be easily combined with existing systems, so that no costly conversions are required.
- composition (I) containing at least cyclododecanone can be obtained by any conventional production method of cyclododecanone.
- cyclododecanone can be obtained by air oxidation of cyclododecane in the presence of boric acid.
- Cyclododecanone can also be prepared, for example, by hydrogenation of cyclododecadienone, by oxidation of cyclododecane or by hydrogenation of cyclododecatriene epoxide.
- the present invention relates to a method as described above for purifying a composition (I) containing at least cyclododecanone, the composition (I) being obtainable by a process comprising at least the steps
- the composition (I) is at least containing cyclododecanone preferably obtained via a hydrogenation of cyclododecadienone according to step (a-3), which in turn was obtained by oxidation of a cyclododecatriene, preferably with nitrous oxide, according to step (a-2).
- Cyclododecatriene is inventively preferably obtained by trimerization of butadiene according to step (a-1).
- further treatments can be carried out between steps (a-1), (a-2) and (a-3), for example purification steps.
- Step (a-1) involves the trimerization of butadiene.
- 1, 5,9-Cyclododecatriene can be prepared, for example, by trimerization of pure 1,3-butadiene, as described, for example, in T. Schiffer, G. Oenbrink, "Cyclododecatrienes, Cyclooctadienes, and 4-vinylcyclohexenes", Ullmann's Encyclopedia of Industrial Chemistry, 6th Edition (2000), Electronic Release, Wiley VCH.
- titanium catalysts for trimerization While in principle all suitable titanium catalysts for trimerization can be used, in the article by Weber et al. described titanium tetrachloride / ethylaluminum sesquichloride catalyst particularly suitable.
- the butadiene used for the trimerization particularly preferably has a degree of purity of at least 99.6% and more preferably of at least 99.65%, determined by gas chromatography.
- the 1,3-butadiene used contains no 1,2-butadiene and no 2-butyne within the scope of the accuracy of detection.
- mixtures are generally obtained which contain at least 95% by weight, preferably at least 96% by weight and more preferably at least 97% by weight, of cis, trans, trans-1, 5,9-cyclododecatriene.
- the mixtures contain about 98 wt .-% cis, trans, trans-1, 5,9-cyclododecatriene.
- This cis, trans, trans-1, 5,9-cyclododecatriene-containing mixture can be used as such for the reaction according to step (a-2). It is likewise possible, via at least one suitable method, for example preferably via at least one distillation, to separate off the cis, trans, trans-1, 5,9-cyclododecatriene from the mixture and to use it in the reaction according to step (a-2).
- the oxidation according to step (a-2) can be carried out by any suitable method known to the person skilled in the art.
- the oxidation according to step (a-2) is preferably carried out in the context of the process according to the invention by means of dinitrogen monoxide.
- cyclododecatriene is oxidized, preferably by reaction with dinitrogen monoxide.
- At least one suitable solvent or diluent may be used for the reaction of cyclododecatriene with dinitrogen monoxide.
- cyclododecane or cyclododecanone or saturated aliphatic or aromatic, optionally alkyl-substituted hydrocarbons may be mentioned, wherein substantially all conventional solvents and / or diluents are suitable, provided that they neither a CC double bond, nor a CC triple bond , still have an aldehyde group.
- the addition of a solvent or diluent is not necessary.
- the temperatures in the reaction of cyclododecatriene with dinitrogen monoxide are preferably in the range of 140 to 350 ° C, more preferably in the range of 180 to 320 ° C and particularly preferably in the range of 200 to 300 ° C.
- the pressures in the reaction of cyclododecatriene with dinitrogen monoxide are preferably higher than the autogenous pressure of the educt or product mixture at the selected reaction temperature or the selected reaction temperatures.
- the pressures are preferably in the range from 1 to 1000 bar, more preferably in the range from 40 to 300 bar and particularly preferably in the range from 50 to 200 bar.
- reactors which can be used for the reaction of cyclododecatriene with dinitrogen monoxide.
- the reaction can be carried out in batch mode or in continuous mode.
- At least one CSTR Continuous
- Stirred Tank Reactor with at least one internal and / or at least one external heat exchanger, at least one tubular reactor or at least one loop reactor can be used. It is also possible to have at least one of these
- Reactor types or at least two different reactor types are used.
- the reaction of cyclododecatriene with dinitrogen monoxide is preferably carried out in a single reactor. For example, preference is given to the reaction in a continuous mode of operation.
- the residence time of the reaction mixture in the at least one reactor in the reaction of cyclododecatriene with dinitrogen monoxide is generally in the range of up to 20 h, preferably in the range of 0.1 to 20 hours, more preferably in the range of 0.2 to 15 hours and more preferably in the range of 0.25 to 10 hours.
- the molar ratio of nitrous oxide to cyclododecatriene is generally in the range of 0.05 to 4, preferably in the range of 0.06 to 1, more preferably in the range of 0.07 to 0.5 and more preferably in the range of 0.1 to 0.4.
- the reaction of cyclododecatriene with dinitrogen monoxide can be carried out so that at a very high selectivity with respect to cyclododecadienone, a conversion of cyclododecatriene in the range of up to 50%, preferably in the range of 5 to 30% and particularly preferably in the range of 10 to 20% becomes.
- the selectivity, based on cyclododecadienone is generally at least 90%, preferably at least 92.5% and particularly preferably at least 95%.
- any cyclododecatriene or any mixture of two or more different cyclododecatrienes can be reacted with dinitrogen monoxide.
- These include, for example, 1, 5,9-cyclododecatrienes, for example cis, trans, trans-1, 5,9-cyclododecatriene or cis, cis, trans-1, 5,9-cyclododecatriene or all-trans-1, 5, 9-cyclododecatriene, to name a few.
- the cyclododecatriene used is preferably cis, trans, trans-1, 5,9-cyclododecatriene.
- a cyclododeca-4,8-dienone isomer mixture which contains at least two of the isomers cis, trans-cyclododeca-4,8- dienone, trans, cis -cyclododeca-4,8-dienone and trans, trans -cyclododeca-4,8-dienone.
- An example of a typical isomer mixture accordingly has the isomers in molar ratios of about 1: 1: 0.08.
- the reaction of cyclododecatriene with dinitrogen monoxide can in principle be carried out in the presence of a catalyst, but also without the addition of a catalyst.
- all suitable catalysts can be used.
- at least one homogeneous or at least one heterogeneous or both at least one homogeneous and at least one heterogeneous catalyst can be used.
- the catalysts which can be used preferably contain at least one metal from the 7th, the 8th, the 9th, the 10th or the 1 st subgroup of the Periodic Table of the Elements.
- catalysts which can be used according to the invention comprise at least one element selected from the group consisting of Re, Fe, Ru, Co,
- the catalysts which can be used according to the invention contain at least one element selected from the group consisting of Fe, Ni, Pd, Pt and Cu.
- the catalysts which can be used according to the invention particularly preferably comprise Pd, Pt, Ru or Ni.
- Suitable examples are homogeneous catalysts containing at least one element of the 8th, 9th or 10th subgroup. More preferred are homogeneous catalysts containing Ru, Rh, Ir and / or Ni. For example, here, for example, RhCl (TTP) 3 or Ru 4 H 4 (CO) - I to name a. Particularly preferred are those homogeneous catalysts containing Ru. For example, homogeneous catalysts are used, as described in US 5,180,870, US 5,321,176, US 5,177,278, US 3,804,914, US 5,210,349, US 5,128,296, US B 316,917 and DR Fahey in J. Org. Chem. 38 (1973) S.
- Such catalysts are about (TPP) 2 (CO) 3 Ru, [Ru (CO) 4 ] 3 , (TPP) 2 Ru (CO) 2 Cl 2 , (TPP) 3 (CO) RuH 2 , (TPP) 2 ( CO) 2 RuH 2 , (TPP) 2 (CO) 2 RUCIH or (TPP) 3 (CO) RUCI 2 .
- At least one heterogeneous catalyst is suitable, wherein at least one of the abovementioned metals can be used as metal as such, as Raney catalyst and / or applied to a conventional support.
- Preferred support materials are, for example, activated carbons or oxides such as, for example, aluminum oxides, silicon oxides, titanium oxides or zirconium oxides. Also to be mentioned among other things as support materials bentonites. If two or more metals are used, they may be present separately or as an alloy.
- At least one metal as such and at least one other metal as Raney catalyst or at least one metal as such and at least one other metal applied to at least one support, or at least one metal as Raney catalyst and at least one other metal applied to at least one support, or at least one metal as such and at least one metal other than Raney's catalyst and at least one other metal applied to at least one support.
- the catalysts used may, for example, also be so-called precipitation catalysts.
- Such catalysts can be prepared by their catalytically active components from their salt solutions, in particular from the solutions of their nitrates and / or acetates, for example by addition of solutions of alkali metal and / or alkaline earth metal and / or carbonate solutions, for example, sparingly soluble hydroxides, oxide hydrates, basic salts or Carbonates precipitates, the resulting precipitates then dried and then converted by calcination at generally 300 to 700 ° C, in particular 400 to 600 ° C in the corresponding oxides, mixed oxides and / or mixed-valent oxides, by treatment with hydrogen or hydrogen containing gases in the range of generally 50 to 700 ° C, in particular 100 to 400 ° C to the respective metals and / or oxidic compounds lower oxidation state reduced and converted into the actual catalytically active form.
- the precipitation of the catalytically active components can be carried out in the presence of the relevant support material.
- the catalytically active components can advantageously be precipitated simultaneously with the carrier material from the relevant salt solutions.
- Hydrogenation catalysts are preferably used which contain the hydrogenation-catalyzing metals or metal compounds deposited on a support material.
- such carrier materials are generally suitable for the process according to the invention, in which the catalytically hydrogenating component has been applied to a carrier material, for example by impregnation.
- the manner of applying the catalytically active metal to the support is generally not critical and can be accomplished in a variety of ways.
- the catalytically active metals can be applied to these support materials, for example, by impregnation with solutions or suspensions of the salts or oxides of the elements concerned, drying and subsequent reduction of the metal compounds to the respective metals or compounds of lower oxidation state by means of a reducing agent, preferably with hydrogen or complex hydrides .
- a reducing agent preferably with hydrogen or complex hydrides
- Another possibility for applying the catalytically active metals to these carriers is to impregnate the carrier with solutions of thermally easily decomposable salts, for example with nitrates or thermally easily decomposable complex compounds, for example carbonyl or hydrido complexes of the catalytically active metals, and the like impregnated carrier for thermal decomposition of the adsorbed metal compounds to temperatures in the range of 300 to 600 ° C to heat.
- This thermal decomposition is preferably carried out under a protective gas atmosphere.
- Suitable shielding gases are, for example, nitrogen, carbon dioxide, hydrogen or the noble gases.
- the catalytically active metals can be deposited on the catalyst support by vapor deposition or by flame spraying.
- the content of these supported catalysts on the catalytically active metals is in principle not critical to the success of the process according to the invention. In general, higher levels of catalytically active metals of these supported catalysts result in higher space-time conversions than lower levels.
- supported catalysts are used whose content of catalytically active metals in the range of 0.1 to 90 wt .-%, preferably in the range of 0.5 to 40 wt .-% based on the total weight of the catalyst.
- these content data refer to the entire catalyst including carrier material, but the different carrier materials have very different specific weights and specific surface areas, it is also conceivable that these specifications can be exceeded or exceeded, without adversely affecting the result of the process according to the invention.
- the catalytically active metals may be applied to the respective carrier material.
- the catalytically active metals can be applied to the carrier, for example, by the process of DE-OS 25 19 817, EP 1 477 219 A1 or EP 0 285 420 A1.
- the catalytically active metals are present as alloys which are produced by thermal treatment and / or reduction of the compounds, for example, by impregnation of the support material with a salt or complex of the abovementioned metals.
- Both the activation of the precipitation catalysts and of the supported catalysts can also be carried out in situ at the beginning of the reaction by the hydrogen present. Preferably, these catalysts are activated separately before use.
- Support materials are aluminas, titania, silica, zirconia and activated carbon.
- carrier materials can also be used as carriers for the process according to the invention
- Catalysts serve.
- Very particularly preferred catalysts according to the invention are those which contain Ni, Pt and / or Pd and are applied to a carrier.
- Most preferred carriers are or include activated carbon, alumina, titania and / or silica.
- the at least one heterogeneous catalyst can be used, for example, as a suspension catalyst and / or as a fixed bed catalyst.
- step (a-3) is carried out with at least one suspension catalyst
- reactors denotes both different types of reactors as well as reactors of the same type, which differ for example by their geometry such as their volume and / or their cross-section and / or by the hydrogenation conditions in the reactors.
- the hydrogenation according to (a-3) is carried out with at least one fixed catalyst, then preferably at least one tubular reactor such as at least one shaft reactor and / or at least one tube reactor is used, wherein a single reactor in bottom or Rieselfahrweise can be operated. If two or more reactors are used, at least one can be operated in a sump mode and at least one in a trickle mode.
- Invention preferably separated by at least one filtration step.
- the thus separated catalyst can be recycled to the hydrogenation or fed to at least one of any other method. It is also possible to use the
- a homogeneous catalyst is used as catalyst in the hydrogenation according to step (a-3), it is preferably separated off in the context of the present invention by at least one distillation step. In this distillation, one or two or more distillation columns can be used. The thus separated catalyst can be recycled to the hydrogenation or fed to at least one of any other method. It is also possible to work up the catalyst in order, for example, to recover the metal contained in the catalyst. Before use in any process such as, for example, prior to recycle to the process of the present invention, both the at least one homogeneous and the at least one heterogeneous catalyst may, if necessary, be regenerated by at least one suitable process.
- the heat can be dissipated internally, for example via cooling coils, and / or externally, for example via at least one heat exchanger. If, for example, at least one tubular reactor is preferably used for the hydrogenation, the reaction is preferably conducted over the outer circulation, in which the heat removal is integrated.
- the hydrogenation is carried out continuously in accordance with a preferred embodiment of the process according to the invention, it is further preferred to employ at least two reactors, more preferably at least two tubular reactors, more preferably at least two serially coupled tubular reactors and particularly preferably exactly two serially coupled tubular reactors.
- the hydrogenation conditions in the reactors used may each be the same or different and are each in the above-described ranges.
- the residence time is generally in the range from 0.05 to 50 h, for example in the range from 0.5 to 50 h, preferably in the range from 1 to 30 h and more preferably in the range of 1, 5 to 25 h, most preferably in the range of 1, 5 to 10 h. It is irrelevant whether according to the invention a main reactor and a post-reactor or in addition further reactors are used. For all of these embodiments, the total residence time is within the ranges given above.
- the catalyst loading (kg feed / liter of catalyst x h) is generally in the range of
- Sub-reactor or additional reactors are used.
- the total load is in the above
- the hydrogenation temperature in the main reactor is in the range of 0 to 350 ° C, preferably in the range of 20 to 300 ° C, more preferably in the range of 50 to 250 ° C, and most preferably in the range of 80 to 220 ° C.
- the hydrogen pressure in the hydrogenation according to the invention in the main reactor is generally in the range from 1 to 325 bar, preferably in the range from 5 to 300 bar, more preferably in the range from 10 to 250 bar and particularly preferably in the range from 15 to 150 bar.
- At least one suitable solvent or diluent can be used.
- suitable solvents and diluents which are not hydrogenated or otherwise reacted under the hydrogenation conditions, e.g. Alcohols, ethers, hydrocarbons, water, aromatics or ketones, in particular toluene or cyclododecane.
- the hydrogenation according to step (a-3) is carried out without addition of a solvent or diluent.
- composition (I) comprising cyclododecanone can be obtained by trimerization of butadiene to cyclododecatriene, hydrogenation of cyclododecatriene to cyclododecane and subsequent oxidation of cyclododecane to cyclododecanone.
- the present invention therefore relates to a method as described above for purifying a composition (I) containing at least cyclododecanone, the composition (I) being obtainable by a process comprising at least the steps
- stages (a-1), (a-II) and (a-III) can be carried out between stages (a-1), (a-II) and (a-III), for example purification steps.
- stage (a-1) the above-described statements apply to stage (a-1).
- step (a-II) and step (a-III) reference is made to DE 103 44 594 A, the content of which is incorporated herein in its entirety into the context of the present application.
- the composition (I) comprising cyclododecanone is obtained by trimerization of butadiene to cyclododecatriene, oxidation of cyclododecatriene to cyclododecatriene epoxide and subsequent hydrogenation and rearrangement of cyclododecatriene epoxide to cyclododecanone.
- the present invention therefore relates to a method as described above for purifying a composition (I) containing at least cyclododecanone, the composition (I) being obtainable by a process comprising at least the steps
- stages (a-A), (a-B) and (a-C) for example purification steps.
- stage (a-A) the previously described statements apply to stage (a-1).
- step (a-B) and step (a-C) reference is made to EP 1 018 498 A2, the content of which is incorporated herein in its entirety into the context of the present application.
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/089,304 US20080296145A1 (en) | 2005-10-07 | 2006-10-06 | Method for Improving the Color Number |
JP2008534026A JP2009511451A (ja) | 2005-10-07 | 2006-10-06 | 色数の改善方法 |
DE112006002397T DE112006002397A5 (de) | 2005-10-07 | 2006-10-06 | Verfahren zur Farbzahlverbesserung |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005048250A DE102005048250A1 (de) | 2005-10-07 | 2005-10-07 | Verfahren zur Farbzahlverbesserung |
DE102005048250.3 | 2005-10-07 |
Publications (1)
Publication Number | Publication Date |
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WO2007042480A1 true WO2007042480A1 (de) | 2007-04-19 |
Family
ID=37603368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2006/067153 WO2007042480A1 (de) | 2005-10-07 | 2006-10-06 | Verfahren zur farbzahlverbesserung |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080296145A1 (de) |
JP (1) | JP2009511451A (de) |
DE (2) | DE102005048250A1 (de) |
WO (1) | WO2007042480A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8188320B2 (en) * | 2009-01-28 | 2012-05-29 | Basf Se | Process for preparing pure cyclododecanone |
DE102012223367A1 (de) * | 2012-12-17 | 2014-06-18 | Evonik Industries Ag | Aufarbeitung eines CDON/CDOL-Gemisches mittels einer "gelochten" Trennwandkolonne |
DE102012223370A1 (de) * | 2012-12-17 | 2014-06-18 | Evonik Industries Ag | Aufarbeitung eines CDON/CDOL-Gemisches mittels einer Sequenz von Seitenabzugskolonnen |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1133257A1 (ru) * | 1983-07-22 | 1985-01-07 | Предприятие П/Я Р-6603 | Способ выделени и очистки циклододеканона |
EP0285372A2 (de) * | 1987-03-31 | 1988-10-05 | Nippon Mining Company Limited | Verfahren zur Reinigung von makrozyklischen Ketonen |
EP1018498A2 (de) * | 1998-12-28 | 2000-07-12 | Ube Industries, Ltd. | Verfahren zur Hydrierung von epoxidierten C6-C12-Cyclokohlenwassterstoff-Verbindungen |
US6245946B1 (en) * | 2000-08-08 | 2001-06-12 | E.I. Du Pont De Nemours And Company | Process for conversion of cyclododecane-1,2-dione to cyclododecanone |
DE10344594A1 (de) * | 2003-09-25 | 2005-05-12 | Basf Ag | Verfahren zur Herstellung von Cyclododecanon |
DE10344595A1 (de) * | 2003-09-25 | 2005-05-12 | Basf Ag | Verfahren zur Herstellung eines Ketons |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US316917A (en) * | 1885-04-28 | Cord-spool and tension device for grain-binders | ||
US3804914A (en) * | 1972-05-25 | 1974-04-16 | Phillips Petroleum Co | Ruthenium(ii)complexes as catalysts for selective hydrogenation of cyclic polyenes to cyclic monoenes |
US5210349A (en) * | 1991-07-01 | 1993-05-11 | Phillips Petroleum Company | Selective hydrogenation of cyclic polyenes |
US5128296A (en) * | 1991-07-01 | 1992-07-07 | Phillips Petroleum Company | Selective hydrogenation of cyclic polyenes |
US5177278A (en) * | 1991-10-23 | 1993-01-05 | E. I. Du Pont De Nemours And Company | Preparation of cyclododecene |
US5180870A (en) * | 1991-10-23 | 1993-01-19 | E. I. Du Pont De Nemours And Company | Hydrogenation of polyenes |
US5321176A (en) * | 1992-12-22 | 1994-06-14 | E. I. Du Pont De Nemours And Company | Hydrogenation of polyenes |
JP4079880B2 (ja) * | 2001-08-16 | 2008-04-23 | 宇部興産株式会社 | シクロドデカノンの製造方法 |
-
2005
- 2005-10-07 DE DE102005048250A patent/DE102005048250A1/de not_active Withdrawn
-
2006
- 2006-10-06 WO PCT/EP2006/067153 patent/WO2007042480A1/de active Application Filing
- 2006-10-06 DE DE112006002397T patent/DE112006002397A5/de not_active Ceased
- 2006-10-06 JP JP2008534026A patent/JP2009511451A/ja not_active Withdrawn
- 2006-10-06 US US12/089,304 patent/US20080296145A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SU1133257A1 (ru) * | 1983-07-22 | 1985-01-07 | Предприятие П/Я Р-6603 | Способ выделени и очистки циклододеканона |
EP0285372A2 (de) * | 1987-03-31 | 1988-10-05 | Nippon Mining Company Limited | Verfahren zur Reinigung von makrozyklischen Ketonen |
EP1018498A2 (de) * | 1998-12-28 | 2000-07-12 | Ube Industries, Ltd. | Verfahren zur Hydrierung von epoxidierten C6-C12-Cyclokohlenwassterstoff-Verbindungen |
US6245946B1 (en) * | 2000-08-08 | 2001-06-12 | E.I. Du Pont De Nemours And Company | Process for conversion of cyclododecane-1,2-dione to cyclododecanone |
DE10344594A1 (de) * | 2003-09-25 | 2005-05-12 | Basf Ag | Verfahren zur Herstellung von Cyclododecanon |
DE10344595A1 (de) * | 2003-09-25 | 2005-05-12 | Basf Ag | Verfahren zur Herstellung eines Ketons |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Week 198531, Derwent World Patents Index; AN 1985-188542, XP002414853 * |
Also Published As
Publication number | Publication date |
---|---|
DE102005048250A1 (de) | 2007-04-12 |
US20080296145A1 (en) | 2008-12-04 |
JP2009511451A (ja) | 2009-03-19 |
DE112006002397A5 (de) | 2008-07-03 |
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