EP1434752A2 - Procede de fabrication de composes alkylaryl et de sulfonates de ceux-ci - Google Patents

Procede de fabrication de composes alkylaryl et de sulfonates de ceux-ci

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Publication number
EP1434752A2
EP1434752A2 EP02800145A EP02800145A EP1434752A2 EP 1434752 A2 EP1434752 A2 EP 1434752A2 EP 02800145 A EP02800145 A EP 02800145A EP 02800145 A EP02800145 A EP 02800145A EP 1434752 A2 EP1434752 A2 EP 1434752A2
Authority
EP
European Patent Office
Prior art keywords
reaction
catalyst
olefins
compounds
olefin
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.)
Withdrawn
Application number
EP02800145A
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German (de)
English (en)
Inventor
Ulrich Steinbrenner
Thomas Heidemann
Götz-Peter SCHINDLER
Jürgen STEPHAN
Heiko Maas
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BASF SE
Original Assignee
BASF SE
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Filing date
Publication date
Priority claimed from DE2001148577 external-priority patent/DE10148577A1/de
Priority claimed from DE2002113492 external-priority patent/DE10213492A1/de
Application filed by BASF SE filed Critical BASF SE
Publication of EP1434752A2 publication Critical patent/EP1434752A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C309/00—Sulfonic acids; Halides, esters, or anhydrides thereof
    • C07C309/01—Sulfonic acids
    • C07C309/28—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
    • C07C309/29—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of non-condensed six-membered aromatic rings
    • C07C309/30—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of non-condensed six-membered aromatic rings of six-membered aromatic rings substituted by alkyl groups
    • C07C309/31—Sulfonic acids having sulfo groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton of non-condensed six-membered aromatic rings of six-membered aromatic rings substituted by alkyl groups by alkyl groups containing at least three carbon atoms

Definitions

  • the present invention relates to processes for the preparation of alkylaryl compounds and alkylarylsulfonates, alkylaryls and alkylarylsulfonates obtainable by these processes, the use of the latter as surfactants, preferably in detergents and cleaning agents, and detergents and cleaning agents containing them.
  • ABS Alkylbenzenesulfonates
  • LAS linear benzene sulfonates
  • linear alkylbenzenesulfonates do not have adequate property profiles in all areas of application.
  • the ratio of terminal phenylalkanes (2-phenylalkanes and 3-phenylalkanes) to internal phenylalkanes (4-, 5-, 6- etc. phenylalkanes) plays a role in the product properties.
  • a 2-phenyl content of approximately 20-40% and a 2- and 3-phenyl content of approximately 40-60% can be advantageous in terms of product quality (solubility, viscosity, washing properties, biodegradability).
  • Surfactants with very high 2- and 3-phenyl contents can have the major disadvantage that the processability of the products suffers from a sharp increase in the viscosity of the sulfonates.
  • the process according to the invention offers the essential advantage that the combination of the process steps gives a unique olefin mixture which, after alkylation of an aromatic compound, sulfonation and neutralization or after isomerization or transalkylation, provides a surfactant which is obtained through a combination of excellent application properties (solubility, Viscosity, stability against water hardness, washing properties, biodegradability).
  • excellent application properties solubility, Viscosity, stability against water hardness, washing properties, biodegradability.
  • biodegradability of alkylarylsulfonates compounds which are less strongly adsorbed on sewage sludge than conventional LAS are particularly advantageous.
  • No. 3,442,964 describes, for example, the dimerization of C 5-8 hydrocarbons in the presence of a cracking catalyst coated with a transition metal, predominantly bi- and poly-branched olefins being obtained. These are subsequently alkylated with benzene to form a non-linear alkylbenzene.
  • a mixture of hexenes is dimerized on a silica-alumina cracking catalyst and then alkylated using HF as a catalyst.
  • WO 88/07030 relates to olefins, alkylbenzenes and alkylbenzenesulfonates which can be used in washing and cleaning agents.
  • propene is dimerized to hexene, which in turn is dimerized to largely linear dodecene isomers.
  • benzene is alkylated in the presence of aluminum halides and hydrofluoric acid.
  • No. 5,026,933 describes the dimerization of propene or butene to form monoolefms, at least 20% being Cj 2 -01efins, which have a degree of branching of 0.8 to 2.0 methyl groups / alkyl chain and have only methyl groups as branches.
  • Aromatic hydrocarbons are alkylated over a shape-selective catalyst, preferably dealuminated MOR.
  • WO 99/05241 relates to cleaning agents which contain branched alkylarylsulfonates as surfactants.
  • alkylarylsulfonates are obtained by dimerization of olefins to vinylidine olefms and subsequent alkylation of benzene over a shape-selective catalyst such as MOR or BEA. This is followed by sulfonation.
  • the older, unpublished DE-A-100 39 995 relates to processes for the preparation of alkylarylsulfonates which are obtained by a two-stage methathesis of C 4 olefins to form C 10-12 olefins, followed by alkylation of aromatic compounds therewith and subsequent sulfonation and neutralization ,
  • Crack processes such as steam cracking or FCC cracking or the dehydrogenation of butanes or the dimerization of ethene are listed as sources for the C 4 olefins.
  • dienes, alkynes or enynes can be removed prior to methathesis using common methods such as extraction or selective hydrogenation.
  • the older, unpublished DE-A-100 59 398 also relates to a process for the preparation of alkyarylsulfonates, the statistical average being predominantly single-branched C 10-14 olefins with an aromatic hydrocarbon in the presence of an alkylation catalyst which contains faujasite-type zeolites, be implemented.
  • the do-w olefins can be obtained by methathesis, extraction, Fischer-Tropsch synthesis, dimerization or isomerization.
  • olefins used to date for the alkylation have too high or too low a degree of branching or do not result in a non-optimal ratio of terminal to internal phenylalkanes.
  • they are made from expensive starting materials such as propene or alpha-olefins, and in some cases the proportion of olefin fractions that are of interest for the preparation of surfactants is only about 20%. This leads to expensive refurbishment steps.
  • the object of the present invention is to provide a process for the preparation of alkylaryl compounds and alkylarylsulfonates which are at least partially branched and thus have advantageous properties over the known compounds for use in detergents and cleaning agents.
  • they should have a suitable property profile from biodegradability, insensitivity to water hardness, solubility and viscosity during manufacture and use.
  • the alkylarylsulfonates should be inexpensive to produce.
  • the object is achieved according to the invention by a process for the preparation of alkylaryl compounds
  • the olefms are preferably obtained by dehydrogenation of the C 4 portion of the LPG stream and subsequent removal of any dienes, alkynes and enynes formed, the C 4 portion of the LPG stream being present before or after the dehydrogenation or removal is separated from dienes, alkynes and enynes from the LPG stream.
  • the LNG stream can preferably be converted into the C -olefin mixture using an MTO process.
  • the individual process variants are explained in more detail below.
  • the object is also achieved by a process for the preparation of alkylaryl compounds
  • step b3) reaction of the C 12 -olefin mixture obtained in step a3) with an aromatic hydrocarbon in the presence of an alkylation catalyst to form alkyl aromatic compounds, it being possible for additional linear olefins to be added before the reaction.
  • the butenes used for the trimerization are obtained, for example, from LPG, LNG or MTO streams, as described above.
  • the object is also achieved according to the invention by a process for the preparation of alkylaryl compounds which have 1 to 3 carbon atoms in the alkyl radical with an H / C index of 1 and in which the proportion of carbon atoms with an H / C index of 0 in the alkyl radical is statistically less than 15%, by isomerization of linear alkylbenzenes or transalkylation of heavy alkylbenzenes with benzene.
  • the object is achieved according to the invention by a process for the preparation of alkylarylsulfonates by preparing alkylaryl compounds according to one of the processes described above and subsequently sulfonation and neutralization of the alkylaryl compounds obtained.
  • the invention further relates to alkylaryl compounds and alkylarylsulfonates which can be obtained by the above processes.
  • the alkylarylsulfonates are preferably used as surfactants, in particular in washing or cleaning agents.
  • the invention thus also relates to detergents or cleaning agents which, in addition to the usual ingredients, contain the alkylarylsulfonates mentioned.
  • the present process is extremely inexpensive, since the product streams can be designed so flexibly that no by-products are produced.
  • the internal metathesis according to the invention generally produces linear, internal olefins which are then converted into branched olefins via the dimerization step.
  • LPG Liquified Petroleum Gas.
  • Liquid gases of this type are defined, for example, in DIN 51 622. They generally contain the hydrocarbons propane, propene, butane, butene and their mixtures, which are obtained in oil refineries as by-products in the distillation and cracking of petroleum and in natural gas processing for gasoline separation.
  • LNG means Liquified Natural Gas. Natural gas mainly consists of saturated hydrocarbons, which have different compositions depending on their origin and are generally divided into three groups. Natural gas from pure natural gas deposits consists of methane and little ethane.
  • Natural gas from oil deposits also contains larger amounts of higher molecular hydrocarbons such as ethane, propane, isobutane, butane, hexane, heptane and by-products. Natural gas from condensate and distillate deposits contains not only methane and ethane, but also to a considerable extent higher-boiling components with more than 7 carbon atoms. For a more detailed description of Liquid gases and natural gas can be referred to the relevant keywords in Römpp, Chemielexikon, 9th edition.
  • the LPG and LNG used as feedstock particularly include so-called field butanes, as the C4 fraction of the "moist" portions of natural gas and associated petroleum gases are called, which are separated from the gases in liquid form by drying and cooling to about -30 ° C.
  • field butanes By low-temperature or pressure distillation, the field butanes are obtained, the composition of which varies depending on the deposit, but which generally contain about 30% isobutane and about 65% n-butane.
  • the C 4 -olefin mixtures used for the production of alkylaryl compounds according to the invention can be obtained in a suitable manner by separating off the C 4 component and dehydrating and feed cleaning.
  • Possible working-up sequences for LPG or LNG streams are dehydrogenation, subsequently separation or partial hydrogenation of the dienes, alkynes and enines and subsequently isolation of the C 4 olefins.
  • the dehydrogenation can be followed first by the isolation of the C 4 olefins, followed by the separation or partial hydrogenation of the dienes, alkynes and enines and, if appropriate, further by-products. It is also possible to carry out the sequence isolation of the C 4 olefins, dehydrogenation, separation or partial hydrogenation.
  • Suitable processes for the dehydrogenation of hydrocarbons are described, for example, in DE-A-100 47 642.
  • the dehydrogenation can, for example, be carried out in a heterogeneously catalyzed manner in one or more reaction zones, at least some of the heat of dehydrogenation required being generated in at least one reaction zone by burning hydrogen, the hydrocarbon or hydrocarbons and / or carbon in the presence of an oxygen-containing gas directly in the reaction mixture ,
  • the reaction gas mixture which contains the dehydratable hydrocarbon or hydrocarbons is brought into contact with a Lewis acidic dehydrogenation catalyst which has no Bronsted acidity.
  • Suitable catalyst systems are Pt / Sn Cs / K La on oxidic supports such as ZrO 2 , SiO 2 , ZrO 2 / SiO 2 , ZrO 2 / SiO 2 / Al 2 O 3 , Al 2 O 3 , Mg (Al) O.
  • Suitable mixed oxides of the carrier are obtained by successive or joint precipitation of soluble precursors.
  • the LNG stream can be converted into the C 4 -olefin mixture, for example, using an MTO process.
  • MTO stands for methanol-to-olefin. It is related to the MTG (Methanol-To-Gasoline) process. It is a process for the dehydration of methanol over a suitable catalyst, whereby an olefinic hydrocarbon mixture is formed. Depending on the Ci feed stream, methanol synthesis can be preceded using the MTO process.
  • Ci feed streams can thus be converted into olefin mixtures from methanol and the MTO process, from which the C 4 olefins can be separated off by suitable methods.
  • the separation can take place, for example, by distillation.
  • MTO process reference can be made to Weissermel, Arpe, Industrielle organic Chemie, 4th edition 1994, VCH-Verlagsgesellschaft, Weinheim, p. 36 ff.
  • the C 4 -olefin mixtures can also be prepared by methathesis of propene.
  • the methathesis can be carried out as described in the present application.
  • the C 4 -olefin mixtures can be obtained by a Fischer-Tropsch process (gas to liquid) or by ethene dimerization. Suitable methods are described in the previously cited book by Weissermel and Arpe on pages 23 ff. And 74 ff.
  • Stage b1) of the process according to the invention is the reaction of the C 4 -olefin mixture on a metathesis catalyst to produce an olefin mixture containing 2-pentene and / or 3-hexene and, if appropriate, separation of 2-pentene and / or 3-hexene.
  • the metathesis can be carried out, for example, as described in WO 00/39058 or DE-A-100 13 253.
  • olefin metathesis disproportionation describes the reversible, metal-catalyzed transalkylidation of olefins by breaking or reforming
  • C C double bonds according to the following equation:
  • homogeneous and heterogeneous transition metal compounds are suitable as metathesis catalysts, in particular those of VI. to VIII. subgroup of the periodic table of the elements and homogeneous and heterogeneous catalyst systems in which these compounds are contained.
  • DE-A-199 32 060 relates to a process for the preparation of C 5 - / C 6 -olefins by converting an output stream which contains 1-butene, 2-butene and isobutene to a mixture of C 2 . 6 olefins.
  • propene in particular is obtained from butenes.
  • witches and methylpentene are removed as products.
  • No ethene is added in the metathesis.
  • ethene formed in the metathesis is returned to the reactor.
  • the preferred process for the production of propene and hexene, if appropriate, from a Raffmat II starting stream containing olefinic C 4 -hydrocarbons is characterized in that a) in the presence of a metathesis catalyst which comprises at least one compound of a metal of VI.b, VILb or VIII Contains subgroup of the Periodic Table of the Elements, a metathesis reaction is carried out, within the scope of which The output stream containing butenes are reacted with ethene to give a mixture comprising ethene, propene, butenes, 2-pentene, 3-hexene and butanes, it being possible to use up to 0.6 molar equivalents of ethene, based on the butenes, b) the discharge stream thus obtained is initially distilled is separated into a low boiler fraction A, optionally containing C 2 ⁇ C 3 olefins, and into a high boiler fraction containing C 4 -C 6 olef
  • the individual streams and fractions may contain or consist of the compounds mentioned. In the event that they consist of the streams or compounds, the presence of smaller amounts of other hydrocarbons is not excluded.
  • a fraction consisting of C 4 olefins, preferably n-butenes and butanes, optionally with variable amounts of ethene over a homogeneous or preferably heterogeneous metathesis catalyst is converted into a product mixture of (inert) butanes, unreacted 1 - Butene, 2-butene and the metathesis products ethene, propene, 2-pentene and 3-hexene implemented.
  • the desired products 2-pentene and / or 3-witches are removed, and the remaining products and unreacted compounds are returned in whole or in part to the metathesis. They are preferably recycled as completely as possible, with only small amounts being discharged in order to avoid leveling up.
  • the maximum possible amounts of C 4 products contained in the reactor discharge and, if appropriate, C 5 products are returned. This applies in particular to the recycling of unreacted 1-butene and 2-butene and any 2-pentene formed.
  • the amount of branched C 5 and C 6 hydrocarbons possibly formed in the metathesis discharge depends on the isobutene content in the C 4 feed and is preferably kept as low as possible ( ⁇ 3%).
  • the external mass balance of the process can be targeted by variable use of ethene and by shifting the equilibrium by recycling certain partial flows are influenced.
  • the 3-hexene yield is increased in that the cross-metathesis of 1-butene with 2-butene is suppressed by recycling 2-pentene to the metathesis step, so that no or as little as possible 1-butene is consumed here.
  • ethene is additionally formed, which reacts in a subsequent reaction with 2-butene to give the valuable product propene.
  • the butene content of the C fraction used in the process is 1 to 100% by weight, preferably 60 to 90% by weight.
  • the butene content relates to 1-butene, 2-butene and isobutene.
  • a C 4 fraction is preferably used, such as is obtained in steam or FCC cracking or in the dehydrogenation of butane.
  • Raffinate II is preferably used as the C 4 fraction, with the C stream being freed from disturbing impurities before the metathesis reaction by appropriate treatment on protective adsorber beds, preferably on high-surface area aluminum oxides or molecular sieves.
  • the low boiler fraction A optionally obtained from step b), which contains C 2 -C 3 olefins, is separated by distillation into an ethene-containing fraction and a propene-containing fraction.
  • the fraction containing ethene is then returned to process step a), ie the metathesis, and the fraction containing propene is discharged as a product.
  • step d) the separation into low boiler fraction B, medium boiler fraction C and high boiler fraction D can be carried out, for example, in a dividing wall column.
  • the low boiler fraction B is obtained overhead, the medium boiler fraction C via a medium discharge and the high boiler fraction D as the bottom.
  • the high boiler fraction obtained from b) is preferably first separated by distillation into a low boiler fraction B containing butenes and butanes and a high boiler fraction containing 2-pentene and 3-hexene.
  • the high boiler fraction is then separated into fractions C and D by distillation.
  • the two embodiments are explained in more detail in Figures 1 and 2.
  • the metathesis reaction is preferably carried out in the presence of heterogeneous, not or only slightly isomerization-active metathesis catalysts which are selected from the class of transition metal compounds of metals from groups VI, VII, B or VIII of the Periodic Table of the Elements, which are applied to inorganic supports.
  • Rhenium oxide on a support preferably on ⁇ -aluminum oxide or on Al 2 O 3 / B 2 O 3 / SiO 2 mixed supports, is preferably used as the metathesis catalyst.
  • the catalyst used is Re 2 O 7 / ⁇ -Al 2 O 3 with a rhenium oxide content of 1 to 20% by weight, preferably 3 to 15% by weight, particularly preferably 6 to 12% by weight.
  • the metathesis is preferably carried out at a temperature of 0 to 150 ° C., particularly preferably 20 to 80 ° C. and a pressure of 2 to 200 bar, particularly preferably 5 to 30 bar.
  • the temperature is preferably 20 to 300 ° C., particularly preferably 50 to 200 ° C.
  • the pressure is preferably 1 to 20 bar, particularly preferably 1 to 5 bar.
  • the preparation of C 5 / C 6 olefins and, if appropriate, propene from the streams described above or generally C streams can comprise substeps (1) to (4): (1) separation of butadiene and acetylenic compounds by, if appropriate
  • C 3 -, iC 4 - and C 5 -hydrocarbons can be removed by distillation in the course of working up the ether, or oligomerization or polymerization of isobutene from the reaction product obtained in the above step in the presence of a acid catalyst, the acid strength of which is suitable for the selective separation of isobutene as oligo- or polyisobutene, in order to obtain a stream which has 0 to 15% residual isobutene,
  • the partial step selective hydrogenation of butadiene and acetylenic impurities contained in crude C-cut is preferably carried out in two stages by contacting the raw C 4 cut in the liquid phase with a catalyst which comprises at least one metal selected from the group consisting of nickel, palladium and platinum.
  • a support preferably palladium on alumina, at a temperature of 20 to 200 ° C, a pressure of 1 to 50 bar, a volume velocity of 0.5 to 30 m fresh feed per m catalyst per hour and a ratio of recycle to inflow from 0 to 30 with a molar ratio of hydrogen to diolefins from 0.5 to 50 to obtain a reaction product in which, in addition to isobutene, the n-butenes 1-butene and 2-butene in a molar ratio of 2: 1 to 1:10 , preferably from 2: 1 to 1: 3, and essentially no diolefins and acetylenic compounds are present.
  • 1-butene is preferably present in excess
  • 2-butene is preferably present in excess.
  • the total molar ratio in the first case can be 2: 1 to 1: 1 and in the second case 1: 1 to 1: 3.
  • the sub-step butadiene extraction from crude C 4 cut is preferably carried out with a butadiene-selective solvent, selected from the class of polar aprotic solvents, such as acetone, furfural, acetonitrile, dimethylacetamide, dimethylformamide and N-methylpyrrolidone, in order to discharge a reaction obtained in which, after subsequent selective hydrogenation / isomerization, the n-butenes 1-butene and 2-butene are present in a molar ratio of 2: 1 to 1:10, preferably from 2: 1 to 1: 3.
  • a butadiene-selective solvent selected from the class of polar aprotic solvents, such as acetone, furfural, acetonitrile, dimethylacetamide, dimethylformamide and N-methylpyrrolidone
  • the sub-step isobutene etherification is preferably carried out in a three-stage reactor cascade with methanol or isobutanol, preferably isobutanol in the presence of an acidic ion exchanger, in which flooded fixed bed catalysts are flowed through from top to bottom, the reactor inlet temperature being 0 to 60 ° C., preferably 10 to 50 ° C, the initial temperature 25 to 85 ° C, preferably 35 to 75 ° C, the pressure 2 to 50 bar, preferably 3 to 20 bar and the ratio of isobutanol to isobutene 0.8 to 2.0, preferably 1.0 is up to 1.5 and the total turnover corresponds to the equilibrium turnover.
  • the substep isobutene separation is preferably carried out by oligomerization or polymerization of isobutene, starting from the reaction discharge obtained after the butadiene extraction and / or selective hydrogenation steps described above, in the presence of a catalyst which is selected from the class of homogeneous and heterogeneous Broensted or Lewis Acids, see DE-A-100 13 253.
  • alkynes, alkynenes and alkadienes are undesirable substances in many technical syntheses. In some cases, they have a very severe effect on the catalysts used in these reactions.
  • the C 4 stream of a steam cracker contains a high proportion of polyunsaturated compounds such as 1,3-butadiene, 1-butyne (ethyl acetylene) and butenine (vinyl acetylene).
  • polyunsaturated compounds are either extracted (butadiene extraction) or selectively hydrogenated.
  • the residual content of polyunsaturated compounds is typically 0.05 to 0.3% by weight, in the latter case typically 0.1 to 4.0% by weight. Since the remaining amounts of polyunsaturated compounds also in the Interfering with further processing, further enrichment by selective hydrogenation to values ⁇ 10 ppm is required. In order to obtain the highest possible product value of butenes, the overhydrogenation to butanes must be kept as low as possible.
  • the preferred method for butadiene isolation is based on the physical principle of extractive distillation.
  • the main solvents used for extractive distillation are acetone, furfural, acetonitrile, dimethylacetamide, dimethylformamide (DMF) and N-methylpyrrolidone (NMP).
  • Extractive distillation is particularly suitable for butadiene-rich C 4 cracking cuts with a relatively high proportion of alkynes, including methyl, ethyl and vinyl acetylene and methyl alleles.
  • the simplified principle of solvent extraction from raw C 4 sections can be illustrated as follows:
  • the completely evaporated C 4 section is fed to an extraction column at the lower end.
  • the solvent (DMF, NMP) flows towards the gas mixture from above and is loaded with more soluble butadiene and small amounts of butenes on the way down.
  • Part of the pure butadiene obtained is fed in at the lower end of the extraction column in order to largely drive off the butenes.
  • the butenes leave the column at the head.
  • outgassing the butadiene is freed from the solvent by boiling and then pure distilled.
  • the reaction product from an extractive butadiene distillation is usually fed into the second stage of a selective hydrogenation in order to reduce the residual butadiene content to values of ⁇ 10 ppm.
  • C 4 raffmat or raffinate I The C 4 stream remaining after removal of butadiene is referred to as C 4 raffmat or raffinate I and mainly contains the components isobutene, 1-butene, 2-butenes and n- and isobutanes.
  • isobutene is preferably isolated subsequently, since it differs from the other C 4 components by its branching and its higher reactivity.
  • shape-selective molecular sieve separation with which isobutene can be obtained with a purity of 99% and n-butenes and butane adsorbed on the molecular sieve pores can be desorbed again using a higher-boiling hydrocarbon, this is done primarily by distillation using a So-called deisobutenizers, with which isobutene is separated off together with 1-butene and isobutene overhead and 2-butenes and n-butane including residual amounts of iso- and 1-butene remain in the sump, or extractively by reacting isobutene with alcohols on acidic ion exchangers.
  • Methanol (- »MTBE) or isobutanol (IBTBE) are examples of MTBE and isobutanol
  • MTBE is produced from methanol and isobutene at 30 to 100 ° C and slightly overpressure in the liquid phase on acidic ion exchangers.
  • the pressure-dependent azeotrope formation between methanol and MTBE requires a multi-stage pressure distillation in order to reproduce MTBE or is achieved by newer technology through methanol adsorption on adsorber resins. All other components of the C 4 fraction remain unchanged.
  • bifunctional PD-containing ion exchangers are preferably used, in which only diolefins and acetylenes are hydrogenated in the presence of small amounts of hydrogen. The etherification of the isobutene remains unaffected.
  • MTBE is primarily used to increase the octane number of gasoline.
  • MTBE and IBTBE can be cleaved on acidic oxides in the gas phase at 150 to 300 ° C for the pure recovery of isobutene.
  • Feed cleaning of the raffinate II stream on adsorber materials To improve the service life of the catalysts used for the subsequent metathesis step, it is necessary, as described above, to use feed cleaning (guard bed) to remove catalyst poisons, such as water, oxygenates, sulfur or sulfur compounds or organic halides.
  • feed cleaning guard bed
  • butadiene (1,2- and 1,3-butadiene) and alkynes or alkenins contained in the C 4 cut are selectively hydrogenated in a two-stage process.
  • the C stream originating from the refinery can also be fed directly into the second step of the selective hydrogenation.
  • the first step of the hydrogenation is preferably carried out on a catalyst which contains 0.1 to 0.5% by weight of palladium on aluminum oxide as a support.
  • the reaction is carried out in the gas / liquid phase in a fixed bed (trickle mode) with a liquid circuit.
  • the hydrogenation takes place at a temperature in the range from 40 to 80 ° C. and a pressure of 10 to 30 bar, a molar ratio of hydrogen to butadiene from 10 to 50 and a volume velocity LHSV of up to 15 m 3 fresh feed per m 3 catalyst per hour and one Ratio of recycle of inflow operated from 5 to 20.
  • the second step of the hydrogenation is preferably carried out on a catalyst which contains 0.1 to 0.5% by weight of palladium on aluminum oxide as a support.
  • the reaction is carried out in the gas / liquid phase in a fixed bed (trickle mode) with a liquid circuit.
  • the hydrogenation takes place at a temperature in the range from 50 to 90 ° C. and a pressure from 10 to 30 bar, a molar ratio of hydrogen to butadiene from 1.0 to 10 and a volume velocity LHSV of 5 to 20 m 3 fresh feed per m 3 Catalyst operated per hour and a ratio of recycle to inflow from 0 to 15.
  • raffinate I The reaction product obtained in this way is referred to as raffinate I and, in addition to isobutene, has 1-butene and 2-butene in a molar ratio of from 2: 1 to 1:10, preferably from 2: 1 to 1: 3.
  • Butadiene is extracted from crude C 4 sections using N-methylpyrrolidone.
  • the reaction discharge from the extraction is fed into the second step of the selective hydrogenation described above in order to remove residual amounts of butadiene, the desired ratio of 1-butene to 2-butene being set in this selective hydrogenation step.
  • etherification stage isobutene is reacted with alcohols, preferably with isobutanol, over an acidic catalyst, preferably over an acidic ion exchanger, to give ether, preferably isobutyl tert-butyl ether.
  • the reaction takes place in a three-stage reactor cascade in which flooded fixed bed catalysts are flowed through from top to bottom.
  • the inlet temperature is 0 to 60 ° C, preferably 10 to 50 ° C; the initial temperature is between 25 and 85 ° C, preferably between 35 and 75 ° C, and the pressure is 2 to 50 bar, preferably 3 to 20 bar.
  • a ratio of isobutanol to isobutene of 0.8 to 2.0, preferably 1.0 to 1.5, the conversion is between 70 and 90%.
  • the inlet temperature is 0 to 60 ° C, preferably 10 to 50 ° C; the starting temperature is between 25 and 85, preferably between 35 and 75 ° C., and the pressure is 2 to 50 bar, preferably 3 to 20 bar.
  • the total conversion over the two stages increases to 85 to 99%, preferably 90 to 97%.
  • Etherification and separation of the ether formed are followed by ether cleavage: the endothermic reaction is carried out on acidic catalysts, preferably on acidic catalysts Heterogeneous contacts, for example phosphoric acid on an SiO 2 support , are carried out at an inlet temperature of 150 to 300 ° C., preferably at 200 to 250 ° C., and an outlet temperature of 100 to 250 ° C., preferably at 130 to 220 ° C.
  • raffinate II The reaction discharge obtained in this way, referred to as raffinate II, has a residual isobutene content of 0.1 to 3% by weight.
  • the remaining raffinate stream can be prepared by distillation according to one embodiment of the invention before further processing.
  • the raffinate II stream obtained after the etherification / polymerization (or distillation) is preferably cleaned on at least one guard bed, consisting of high-surface area aluminum oxides, silica gels, aluminum silicates or molecular sieves.
  • the protective bed serves to dry the C 4 stream and to remove substances which can act as a catalyst poison in the subsequent metathesis step.
  • Adsorber materials are Selexsorb CD and CDO as well as 3A and NaX molecular sieves (13X). Cleaning takes place in drying towers at temperatures and pressures that are selected so that all components are in the liquid phase. If necessary, the cleaning step for feed preheating is used for the subsequent metathesis step.
  • the remaining raffinate II stream is almost free of water, oxygenates, organic chlorides and sulfur compounds.
  • the procedure is generally applicable to C 4 output currents.
  • Metathesis catalysts are known heterogeneous rhenium catalysts, such as Re 2 O 7 on ⁇ -Al 2 O 3 or on mixed supports, such as SiO 2 / Al 2 O 3 , B 2 O 3 / SiO 2 / Al 2 O 3 or Fe 2 O 3 / Al 2 O 3 with different metal content is preferred.
  • the rhenium oxide content is between 1 and 20%, preferably between 3 and 10%, regardless of the carrier selected.
  • the catalysts are used freshly calcined and do not require any further activation (for example by alkylating agents). Deactivated catalyst can be regenerated several times by burning off coke residues at temperatures above 400 ° C in an air stream and cooling under an inert gas atmosphere.
  • EP-A-191 0 675, EP-A-129 0 474, BE 899897 catalyst systems made of tungsten, 2-substituted phenolate residues and 4 other ligands, among others. a halogen, alkyl or carbene group.
  • FR 2 499 083 Catalyst system made of a tungsten, molybdenum or rhenium oxo transition metal complex with a Lewis acid.
  • BE 776,564 catalyst system composed of a transition metal salt, an organometallic compound and an amine.
  • the protective bed serves to dry the C 4 stream and to remove substances which can act as a catalyst poison in the subsequent metathesis step.
  • the preferred adsorbent materials are Selexsorb CD and CDO as well as 3A and NaX molecular sieves (13X). Cleaning takes place in drying towers at temperatures and pressures, which are preferably chosen so that all components are in the liquid phase. If necessary, the feed preheating cleaning step is used for the subsequent metathesis step. It can be advantageous to combine several cleaning steps with each other or to connect them in series.
  • the reaction is complete after 1 s to 1 h, preferably after 30 s to 30 min. It can be carried out continuously or batchwise in reactors, such as pressurized gas vessels, flow tubes or reactive distillation devices, with flow tubes being preferred.
  • reactors such as pressurized gas vessels, flow tubes or reactive distillation devices, with flow tubes being preferred.
  • stage a2) described can also be carried out.
  • a C 6 -olefin mixture is produced by dehydrogenating C 6 -alkanes with optionally upstream or downstream isomerization.
  • the dehydrogenation can be carried out by methods as described above for the dehydrogenation of butanes. Reference can again be made to DE-A-100 47 642 and the other literature cited above.
  • Weissermel, Arpe, p. 92 relates to the di- or oligomerization of propene using the UOP method.
  • the dimersol process is described on page 93.
  • the propene dimerization is explained on p. 94.
  • the SHOP process is illustrated on p. 96.
  • Ethylene is first oligomerized at 80 to 120 ° C and 70 to 140 bar in the presence of a nickel catalyst with phosphine ligands to form an even, linear ⁇ -olefin mixture from which Cio-is-olefins are used directly for the detergent sector be isolated.
  • the SHOP process is explained in more detail by Cornils, Herrmann on p. 251 ff. Dimerization and co-dimerization are discussed on p. 258 ff.
  • C 6 olefins Another source of C 6 olefins can also be the so-called J flag C6.
  • step cl) or b2) the 2-pentene and / or 3-hexene or C 6 -olefin mixture obtained in step bl) or a2) is converted over a dimerization catalyst to a Cjo-n-olefin mixture or C 12 olefin mixture dimerized.
  • the C ⁇ obtained are separated 0- 12 olefins.
  • dimerization products are obtained which have particularly favorable components and particularly advantageous compositions with regard to the further processing to alkyl aromatics, if a dimerization catalyst is used which contains at least one element of subgroup VIII of the periodic system , and the catalyst composition and the reaction conditions are selected so that a dimer mixture is obtained which contains less than 10% by weight of compounds which have a structural element of the formula I (vinylidene group)
  • a 1 and A 2 are aliphatic hydrocarbon radicals.
  • the internal linear pentenes and hexenes contained in the metathesis product are preferably used for the dimerization.
  • the use of 3-hexes is particularly preferred.
  • the dimerization can be carried out homogeneously or heterogeneously.
  • the heterogeneous procedure is preferred, since on the one hand the catalyst separation is simplified and the process is therefore more economical, and on the other hand no environmentally harmful wastewater is generated, as is usually the case when separating dissolved catalysts, for example by hydrolysis.
  • Another advantage of the heterogeneous process is that the dimerization product contains no halogens, especially chlorine or fluorine.
  • Homogeneously soluble catalysts generally contain halide-containing ligands, or they are used in combination with halogen-containing cocatalysts. Halogen from such catalyst systems can be incorporated into the dimerization products, which significantly affects both product quality and further processing.
  • Combinations of oxides of metals of subgroup VIII with aluminum oxide on support materials made of silicon and titanium oxides, as are known, for example, from DE-A-43 39 713, are expediently used for heterogeneous catalysis.
  • the heterogeneous catalyst can be used in a fixed bed - then preferably in coarse-grained form as 1 to 1.5 mm grit - or suspended (particle size 0.05 to 0.5 mm).
  • the dimerization is advantageously carried out in a closed system at temperatures of 80 to 200 ° C., preferably 100 to 180 ° C., under the pressure prevailing at the reaction temperature, optionally also under a protective gas overpressure.
  • the reaction mixture is circulated several times, a certain proportion of the circulating product being continuously removed and replaced by starting material.
  • the dimerization catalysts and the reaction conditions are preferably selected within the framework of the above information in such a way that at least 80% of the components of the dimerization mixture branch out in the range from 1/4 to 3/4, preferably from 1/3 to 2/3, of the chain length of their main chain , or two branches on adjacent carbon atoms.
  • Very characteristic of the olefin mixtures produced according to the invention is their high proportion - generally over 75%, in particular over 80% - of components with branches and the low proportion - generally below 25, in particular below 20% - unbranched olefins.
  • Another characteristic is that predominantly groups with (y-4) and (y-5) carbon atoms are bound at the branching points of the main chain, where y is the number of carbon atoms of the monomer used for the dimerization.
  • the value (y-5) 0 means that there is no side chain.
  • the main chain preferably carries methyl or ethyl groups at the branching points.
  • olefin mixtures are in total in the range from 40 to 75% by weight, the proportions of double-branched components in the range from 5 to 25% by weight.
  • olefin mixtures obtainable by the above process represent valuable intermediates, in particular for the preparation of branched alkyl aromatics for the preparation of surfactants described below.
  • Stage a3) as an alternative to stages cl) or b2), in connection with the upstream stages, relates to the preparation of a C 12 -olefin mixture by trimerization of butenes or dehydrogenation of C 12 alkanes with, if appropriate, upstream or downstream isomerization.
  • This can be a general butene dimerization or oligomerization, in which the trimer part is separated off and reused. According to the invention, however, it can also be a chromium-catalyzed selective trimerization of mixtures containing butene.
  • the butene-containing mixtures can be derived, for example, from the C 4 -olefin mixtures obtained in stage a1), which are obtained from LPG, LNG or MTO streams.
  • dodenzene-N The trimerization of butene-containing mixtures to form dodenzenes (dodecene-N") can be carried out in accordance with EP-A-0 730 567, WO 99/25668 or by oligomerization of butenes. After the C 8 olefins (main product) and the C 16+ olefin residue have been separated off by distillation, a C 12 olefin mixture with an iso index of 1.9 to 2.4 is obtained.
  • chromium-catalyzed trimerization is described for example in WO 00/58319 or also EP-A-0 780 353, DE-A-196 07 888, EP-A-0 537 609. Suitable catalysts and procedures are specified in the documents.
  • C 12 olefin from the ethene oligomerization for example NEODENE 12 (see WO 98/23566) a suitable branched dodecene is isomerized skeleton / framework. Methods are used, such as those described in WO 98/23566.
  • dodecene dodecene
  • Fischer-Tropsch synthesis see. Weissermel, Arpe, p. 23, the dimerization of 1-hexene from the chromium-catalyzed ethene selective trimerization (WO 00/58319), the Dimersol X process, see Cornils, Herrmann, p. 259 ff. And the Octol A or Octol B process.
  • the IFP's Dimersol-X process is described, for example, in Hydrocarbon Processing 1981, 99.
  • the octol A or octol B process is described, for example, in Hydrocarbon Processing 1992, 45.
  • stage dl) or c2) or b3) the C 10-12 -olefin mixture or C 12 -olefin mixture obtained in stage cl) or b2) or a3) is mixed with an aromatic hydrocarbon in the presence of an alkylation catalyst implemented to form alkyl aromatic compounds.
  • An alkylation catalyst is preferably used, which leads to alkylaromatic compounds which have one to three carbon atoms in the alkyl radical with an H / C index of 1.
  • the alkylation can be carried out in the presence of any alkylation catalysts.
  • heterogeneous or shape-selective catalysts offer advantages.
  • solid catalysts including, for example, the fluorinated Si / Al catalyst used in the DETAL process, a number of shape-selective catalysts or supported metal oxide catalysts, as well as layered silicates and clays.
  • the catalyst When selecting the catalyst, it is important, regardless of the large influence of the feedstock used, to minimize compounds formed by the catalyst, which are characterized in that they contain carbon atoms with an H / C index of 0 in the alkyl radical. Furthermore, compounds are to be formed which have an average of 1 to 3 carbon atoms in the alkyl radical with an H / C index of 1. This can be achieved in particular by the selection of suitable catalysts, on the one hand by their Geometry suppress the formation of the undesired products and on the other hand allow a sufficient reaction speed.
  • the H / C index defines the number of protons per carbon atom in the alkyl radical.
  • One-dimensional pore systems usually have the disadvantage of rapid clogging of the pores by degradation or build-up products from the process. Catalysts with multidimensional pore systems are therefore preferred.
  • the catalysts used can be of natural or synthetic origin, the properties of which can be adjusted to a certain extent by methods known from the literature (e.g. ion exchange, steaming, blocking of acidic centers, washing out of extra-lattice species, etc.). It is important for the present invention that the catalysts are at least partially acidic in character.
  • the catalysts are available either as powder or as shaped bodies.
  • the connections between the matrices of the shaped bodies ensure adequate mechanical stability, but free access of the molecules to the active constituents of the catalysts is to be ensured by sufficient porosity of the matrices.
  • the production of such moldings is known from the literature and is carried out according to the prior art.
  • Possible catalysts for alkylation are: A1C1 3 , AlCl 3 / carrier (WO 96/26787), HF, H 2 SO 4 , ionic liquids (e.g. WO 98/50153), perfluorinated ion exchangers or NAFION / silica (e.g. WO 99/06145), F-Si / Al (US 5,344,997)
  • Beta e.g. WO 98/09929, US 5,877,370, US 4,301,316, US 4,301,317), faujasite (CN 1169889), layered silicates, clays (EP 711600), fluorinated mordenite (WO 00/23405), mordenite (EP 466558), ZSM-12 , ZSM-20, ZSM-38, Mazzite, Zeolite L, Cancrinit, Gmelinit, Offretit, MCM-22, etc.
  • Shape-selective 12-ring zeolites are preferred.
  • the alkylation is carried out in such a way that the aromatics (the aromatic mixture) and the olefin (mixture) are brought into contact in a suitable reaction zone allows the catalyst to react, after the reaction the reaction mixture is worked up and the products of value are thus obtained.
  • Suitable reaction zones are e.g. Tube reactors or stirred tanks. If the catalyst is in solid form, it can be used either as a slurry, as a fixed bed or as a fluidized bed.
  • the reactants can be conducted either in cocurrent or in countercurrent. Execution as a catalytic distillation is also possible.
  • the reactants are either in a liquid and / or in a gaseous state.
  • reaction temperature is chosen so that on the one hand the conversion of the olefin is as complete as possible and on the other hand as few by-products as possible are formed.
  • the choice of temperature control also depends crucially on the chosen catalyst. Reaction temperatures between 50 ° C and 500 ° C (preferably 80 to 350 ° C, particularly preferably 80-250 ° C) can be used.
  • the pressure of the reaction depends on the chosen procedure (reactor type) and is between 0.1 and 100 bar, the catalyst load (WHSV) is selected between 0.1 and 100.
  • the reactants can optionally be diluted with inert substances.
  • Inert substances are preferred paraffins.
  • the ratio of aroma olefin is usually set between 1: 1 and 100: 1 (preferably 2: 1-20: 1).
  • Ar-R All aromatic hydrocarbons of the formula Ar-R are possible, where Ar is a monocyclic or bicyclic aromatic hydrocarbon radical and R is H, C ⁇ -5-, preferably C ⁇ -3- alkyl, OH, OR etc., preferably H or C ⁇ - 3 alkyl is selected. Benzene and toluene are preferred.
  • the preparation of alkylaryl compounds which have 1 to 3 carbon atoms in the alkyl radical with an H / C index of 1 and in which the proportion of carbon atoms with an H / C index of 0 in the alkyl radical can be statistically smaller than 15% can be obtained by isomerization of linear alkylbenzenes or transalkylation of heavy alkylbenzenes with benzene.
  • Linear alkylbenzenes (LAB) can be isomerized by any suitable method.
  • the transalkylation of heavy alkylbenzenes, in particular isomeric didodecylbenzenes, with benzene can optionally be carried out with isomerization of the side chain.
  • the reaction conditions can correspond to the conditions of conventional processes.
  • the catalyst used according to the invention for example mordenite, beta-zeolite, L-zeolite or faujasite
  • the catalyst used according to the invention regardless of the great influence of the feedstock used on the minimization of compounds formed by the catalyst, which are characterized in that they have carbon atoms an H / C index of 0 in the side chain.
  • the proportion of carbon atoms in the alkyl radical with an H / C index of 0 should, on average, be less than 15% (preferably less than 1%) of all compounds.
  • the H / C index defines the number of protons per carbon atom.
  • the olefins used in the process according to the invention preferably have no carbon atoms with an H / C index of 0 in the side chain. If the alkylation of the aromatic with the olefin is now carried out under conditions as described here and under which no skeletal isomerization of the olefin takes place, carbon atoms with an H / C index of 0 can only be formed in the benzyl position to the aromatic, i.e. it is sufficient to determine the H / C index of the benzylic carbon atoms.
  • compounds are to be formed which have an average of 1 to 3 carbon atoms with an H / C index of 1 in the side chain. This is achieved in particular by selecting a suitable feedstock and suitable catalysts which, on the one hand, suppress the formation of the undesired products due to their geometry and, on the other hand, allow a sufficient reaction rate.
  • Catalysts for the process according to the invention are in particular zeolites of the type mordenite, beta zeolite, L zeolite or faujasite, or their derivatives. Under We understand descendants as modified zeolites, for example by processes such as
  • Ion exchange, steaming, blocking of external centers, etc. can be produced.
  • Catalysts are characterized in particular by the fact that they contain over 20% of a phase in the X-ray powder diffractogram which can be indicated with the structure of the mordenite, the beta zeolite, the L zeolite or the faujasite.
  • linear olefins are additionally added before the alkylation, their proportion of the total olefins is preferably at most 70% by weight, particularly preferably at most 50% by weight, in particular at most 30% by weight.
  • the minimum amount is preferably 1% by weight, particularly preferably at least 5% by weight.
  • Non-exclusive examples of common ingredients of the washing and cleaning agents according to the invention are listed below.
  • alkali perborates or alkali carbonate perhydrates especially the sodium salts.
  • peracetic acid An example of a usable organic peracid is peracetic acid, which is preferably used in commercial textile washing or cleaning.
  • Bleach or textile detergent compositions which can be used advantageously contain C ⁇ . 12 -percarboxylic acids, C 8-16 -dipercarboxylic acids, imidopercaproic acids, or aryldipercaproic acids.
  • Preferred examples of usable acids are peracetic acid, linear or branched octanoic, nonanoic, decanoic or dodecane monoperacids, decanoic and dodecanediperic acid, mono- and diperphthalic acids, isophthalic acids and terephthalic acids, phthalimidopercaproic acid and terephthaloyldipercaproic acid.
  • Polymeric peracids can also be used, for example those which contain basic acrylic acid units in which a peroxy function is present.
  • the percarboxylic acids can be used as free acids or as salts of the acids, preferably alkali or alkaline earth metal salts.
  • bleach Bleaching catalysts are, for example, quaternized imines and sulfonimines, as described for example in US 5,360,568, US 5,360,569 and EP-A-0 453 003, as well as manganese complexes, as described for example in WO-A 94/21777. Further metal-containing bleaching catalysts which can be used are described in EP-A-0 458 397, EP-A-0 458 398, EP-A-0 549 272.
  • Bleach activators are, for example, compounds of the following substance classes:
  • Polyacylated sugars or sugar derivatives with C 1-10 acyl residues preferably acetyl, propionyl, octanoyl, nonanoyl or benzoyl residues, particularly preferably acetyl residues, can be used as bleach activators.
  • Mono- or disaccarides and their reduced or oxidized derivatives can be used as sugar or sugar derivatives, preferably glucose, mannose, fructose, sucrose, xylose or lactose.
  • bleach activators of this class of substances are, for example, pentaacetylglucose, xylose tetraacetate, l-benzoyl-2,3,4,6-tetraacetylglucose and l-octanoyl-2,3,4,6-tetraacetylglucose.
  • Another class of substances which can be used are the acyloxybenzenesulfonic acids and their alkali metal and alkaline earth metal salts, it being possible to use C 1-14 -acyl radicals.
  • Acetyl, propionyl, octanoyl, nonanoyl and benzoyl residues are preferred, in particular acetyl residues and nonanoyl residues.
  • Particularly suitable bleach activators in this class of substances are acetyloxybenzenesulfonic acid. They are preferably used in the form of their sodium salts.
  • O-Acyloxime esters such as. B. O-acetylacetone oxime, O-benzoylacetone oxime, bis (propylimino) carbonate, bis (cyclohexylimino) carbonate.
  • N-Acylcarprolactams such as N-acetylcaprolactam, N-benzoylcaprolactam, N-octanoylcaprolactam, carbonyl biscaprolactam can also be used.
  • N-diacylated and N, N'-tetraacylated amines e.g. B. N, N, N ', N'- tetraacetylmethylene diamine and ethylenediamine (TAED), N, N-diacetylaniline, N, N- Diacetyl-p-toluidine or 1,3-diacylated hydantoins such as 1,3-diacetyl-5,5-dimethylhydantoin;
  • N-alkyl-N-sulfonyl-carbonamides e.g. N-methyl-N-mesyl-acetamide or N-
  • Methyl-N-mesyl-benzamide - N-acylated cyclic hydrazides, acylated triazoles or urazoles, e.g. Monoacetyl maleic acid hydrazide;
  • N, N'-diacyl-sulfurylamides e.g. N, N'-dimethyl-N, N'-diacetyl-sulfurylamide or N, N'-diethyl-N, N'-dipropionyl-sulfurylamide;
  • Triacylcyanurates e.g. Triacetyl cyanurate or tribenzoyl cyanurate
  • Carboxylic anhydrides e.g. Benzoic anhydride, m-chlorobenzoic anhydride or phthalic anhydride; 1,3-diacyl-4,5-diacyloxyimidazolines, e.g. l, 3-diacetyl-4,5-diacetoxy; - tetraacetylglycoluril and tetrapropionylglycoluril; diacylated 2,5-diketopiperazines, e.g. l, 4-diacetyl-2,5-diketopiperazine;
  • Acylation products of propylene diurea and 2,2-dimethylpropylene diurea e.g. tetraacetylpropylenediurea
  • ⁇ -acyloxy polyacyl malonamides e.g. ⁇ -acetoxy-N, N'-diacetyl malonamide
  • Diacyl-dioxohexahydro-l, 3,5-triazines e.g. l, 5-diacetyl-2,4-dioxohexahydro-l, 3,5-triazine.
  • 1-Alkyl- or l-aryl- (4H) -3, l-benzoxazin-4-ones can also be used, as described, for example, in EP-B1-0 332 294 and EP-B 0 502 013.
  • 2-phenyl- (4H) -3, l-benzoxazin-4-one and 2-methyl- (4H) - 3, 1-benzoxazin-4-one can be used.
  • Cationic nitriles as described, for example, in EP 303 520 and EP 458 391 AI can also be used.
  • suitable cation nitriles are the methosulfates or tosylates of trimethylammonium acetonitrile, N, N-dimethyl-N-octylammonium acetonitrile, 2- (trimethylammonium) propionitrile, 2- (trimethylammonium) -2-methyl-propionitrile, N-methylpiperazinium-N , N'-diacetonitrile and N-methylmorpholinium acetronitrile.
  • Particularly suitable crystalline bleach activators are tetraacetylethylene diamine (TAED), NOBS, isoNOBS, carbonyl biscaprolactam, benzoyl caprolactam, bis (2-propyl imino) carbonate, bis (cyclohexylimino) carbonate, O-benzoylacetone oxime and 1-phenyl (4H) - 3, l-benzoxazin-4-one, anthranil, phenylanthranil, N-methylmorpholinoacetonitrile, N-octanoylcaprolactam (OCL) and N-methylpiperazin-N, N'-diacetonitrile as well as liquid or poorly crystallizing bleach activators in a form made up as a solid product.
  • TAED tetraacetylethylene diamine
  • NOBS tetraacetylethylene diamine
  • isoNOBS carbonyl biscaprolactam
  • benzoyl caprolactam bis (2-
  • additives that can adsorb, bind or complex heavy metal traces.
  • additives with bleach-stabilizing action which can be used according to the invention are polyanionic compounds such as polyphosphates, polycarbonate, polyhydroxypolycarboxylates, soluble silicates as completely or partially neutralized alkali or alkaline earth metal salts, in particular as neutral Na or Mg salts, which are relatively weak bleach stabilizers.
  • Strong bleach stabilizers which can be used according to the invention are, for example, complexing agents, such as ethylenediaminetetraacetate (EDTA), nitrilotriacetic acid (NTA), methylglycinediacetic acid (MGDA), ß-alaninediacetic acid (ADA), ethylenediamine-N, N'-disuccinate (EDDS) and phosphonates such as ethylenedamethylenephosphonate- such as ethylenedamethylphosphonate- ethylenediaminephosphonate- or hydroxyethylidene-l, l-diphosphonic acid in the form of the acids or as partially or completely neutralized alkali metal salts.
  • the complexing agents are preferably used in the form of their Na salts.
  • the detergents according to the invention preferably contain at least one bleach stabilizer, particularly preferably at least one of the abovementioned. strong bleach stabilizers.
  • the described bleaching or textile detergent compositions according to one embodiment of the invention can contain almost all the usual constituents of washing, bleaching and cleaning agents. In this way it is possible, for example, to build up means which are particularly suitable for textile treatment at low temperatures, and also means which are suitable in a number of temperature ranges up to the traditional area of cooked laundry.
  • the main constituents of textile detergents and cleaning agents are builders, ie inorganic builders and / or organic cobuilders, and surfactants, in particular anionic and / or nonionic surfactants.
  • surfactants in particular anionic and / or nonionic surfactants.
  • other customary auxiliaries and accompanying substances such as adjusting agents, complexing agents, phosphonates, dyes, corrosion inhibitors, graying inhibitors and / or soil release polymers, color transfer inhibitors, bleaching catalysts, peroxide stabilizers, electrolytes, optical brighteners, enzymes, perfume oils, foam regulators and activating substances are present in these agents if this is expedient.
  • inorganic builders such as aluminosilicates, silicates, carbonates and phosphates are suitable as inorganic builder substances.
  • Suitable inorganic builders are e.g. Alumosilicates with ion exchange properties such as Zeolites.
  • zeolites are suitable, in particular zeolite A, X, B, P, MAP and HS in their Na form or in forms in which Na is partly replaced by other cations such as Li, K, Ca, Mg or ammonium.
  • Suitable zeolites are described, for example, in EP-A 038 591, EP-A 021 491, EP-A 087 035, US-A 4,604,224, GB-A2 013 259, EP-A 522 726, EP-A 384 070 and WO-A 94/24 251.
  • Suitable inorganic builders are e.g. amorphous or crystalline silicates such as e.g. amorphous disilicates, crystalline disilicates such as the layered silicate SKS-6 (manufacturer Hoechst).
  • the silicates can be used in the form of their alkali, alkaline earth or ammonium salts. Na, Li and Mg silicates are preferably used.
  • Suitable anionic surfactants are the linear and / or slightly branched alkylbenzenesulfonates (LAS) according to the invention.
  • Suitable anionic surfactants are, for example, fatty alcohol sulfates of fatty alcohols having 8 to 22, preferably 10 to 18 carbon atoms, for example C to Cn alcohol sulfates, C 12 to C 13 alcohol sulfates, cetyl sulfate, myristyl sulfate, palmityl sulfate, stearyl sulfate and tallow fatty alcohol sulfate.
  • Suitable anionic surfactants are sulfated ethoxylated C 8 to C 22 alcohols (alkyl ether sulfates) or their soluble salts.
  • Compounds of this type are prepared, for example, by first alkoxylating a C 8 to C 22 , preferably a C 10 to C 18 alcohol, for example a fatty alcohol, and the alkoxylation product then sulfated.
  • Ethylene oxide is preferably used for the alkoxylation, 2 to 50, preferably 3 to 20, mol of ethylene oxide being used per mol of fatty alcohol.
  • the alkoxylation of the alcohols can also be carried out using propylene oxide alone and, if appropriate, butylene oxide.
  • Alkoxylated C 8 to C 22 alcohols which contain ethylene oxide and propylene oxide or ethylene oxide and butylene oxide are also suitable.
  • the alkoxylated C 8 to C 22 alcohols can contain the ethylene oxide, propylene oxide and butylene oxide units in the form of blocks or in statistical distribution.
  • N-acyl sarcosinates with aliphatic saturated or unsaturated C 8 - to C 25 -acyl residues, preferably C 10 - to C 20 -acyl residues, e.g. B. N-oleoyl sarcosinate.
  • the anionic surfactants are preferably added to the detergent in the form of salts.
  • Suitable cations in these salts are alkali metal salts such as sodium, potassium and lithium and ammonium salts such as e.g. Hydroxyethylammonium, di (hydroxyethyl) ammonium and tri (hydroxyethyl) ammonium salts.
  • the detergents according to the invention preferably contain C 10 to C 13 linear and / or slightly branched alkylbenzenesulfonates (LAS).
  • nonionic surfactants are alkoxylated C 8 to C 22 alcohols, such as fatty alcohol alkoxylates or oxo alcohol alkoxylates.
  • the alkoxylation can be carried out using ethylene oxide, propylene oxide and / or butylene oxide. All alkoxylated alcohols which contain at least two molecules of an alkylene oxide mentioned above can be used as the surfactant.
  • block polymers of ethylene oxide, propylene oxide and / or butylene oxide come into consideration or addition products which contain the alkylene oxides mentioned in a statistical distribution. 2 to 50, preferably 3 to 20, mol of at least one alkylene oxide are used per mole of alcohol.
  • Ethylene oxide is preferably used as the alkylene oxide.
  • the alcohols preferably have 10 to 18 carbon atoms.
  • nonionic surfactants are alkylphenol ethoxylates with C 6 to C 4 alkyl chains and 5 to 30 mol of ethylene oxide units.
  • Another class of nonionic surfactants are alkyl polyglucosides with 8 to 22, preferably 10 to 18 carbon atoms in the alkyl chain. These compounds usually contain 1 to 20, preferably 1.1 to 5, glucoside units.
  • N-alkyl glucamides of general structure II or III
  • R 6 is C 6 to C 22 alkyl, R7 H or Ci to C 4 alkyl and R8 is a polyhydroxyalkyl radical having 5 to 12 C atoms and at least 3 hydroxy groups.
  • R O is preferably C 10 to C 18 alkyl, R 7 is methyl and R 8 is a C 5 or C 6 radical.
  • such compounds are obtained by acylating reducing-aminated sugars with acid chlorides of Cio-Cis-carboxylic acids.
  • the detergents according to the invention preferably contain C 12 -C 12 alcohols ethoxylated with 3-12 mol ethylene oxide, particularly preferably ethoxylated fatty alcohols as nonionic surfactants.
  • Suitable low molecular weight polycarboxylates as organic cobuilders are:
  • C 4 - to C 20 -di, tri- and tetracarboxylic acids such as succinic acid, propane tricarboxylic acid, butane tetracarboxylic acid, cyclopentane tetracarboxylic acid and alkyl and alkenyl succinic acids with C 2 to C 16 alkyl or alkenyl radicals;
  • C 4 - to C 2 Q-hydroxycarboxylic acids such as malic acid, tartaric acid, gluconic acid, glucaric acid, citric acid, lactobionic acid and sucrose mono-, di- and tricarboxylic acid;
  • Aminopolycarboxylates such as nitrilotriacetic acid, methylglycinediacetic acid, alaninediacetic acid, ethylenediaminetetraacetic acid and serinediacetic acid; Salts of phosphonic acids such as hydroxyethane diphosphonic acid, ethylenediaminetetra (methylenephosphonate) and diethylenetriaminepenta (methylenephosphonate).
  • Suitable oligomeric or polymeric polycarboxylates as organic cobuilders are:
  • Oligomaleic acids as described, for example, in EP-A-451 508 and EP-A-396 303;
  • Suitable unsaturated C 4 -C 8 dicarboxylic acids are maleic acid, fumaric acid, itaconic acid and citraconic acid. Maleic acid is preferred.
  • Group (i) includes monoethylenically unsaturated C 3 -C 8 -monocarboxylic acids such as acrylic acid, methacrylic acid, crotonic acid and vinyl acetic acid. From Grappe (i) acrylic acid and methacrylic acid are preferably used.
  • the grappa (ii) comprises monoethylenically unsaturated C 2 -C 22 olefins, vinyl alkyl ethers with C 1 -C 8 -alkyl groups, styrene, vinyl esters of C 1 -C 8 carboxylic acids, (meth) acrylamide and vinyl pyrrolidone. From Grappe (ii), preference is given to using C 2 -C 6 olefins, vinyl alkyl ethers with C 1 -C 4 alkyl groups, vinyl acetate and vinyl propionate.
  • Group (iii) includes (meth) acrylic esters of d-bis Cs alcohols, (meth) acrylonitrile, (meth) acrylamides of d-Cs amines, N-vinylformamide and vinylimidazole.
  • polymers of Grappe (ii) contain vinyl esters in copolymerized form, these can also be partially or completely hydrolyzed to methyl alcohol units.
  • Suitable copolymers and terpolymers are known, for example, from US Pat. No. 3,887,806 and DE-A43 13 909.
  • Suitable copolymers of dicarboxylic acids as organic cobuilders are preferably:
  • Terpolymers of maleic acid, acrylic acid and vinyl acetate or vinyl propionate in a weight ratio of 20 (maleic acid): 80 (acrylic acid + vinyl ester) to 90 (maleic acid): 10 (acrylic acid + vinyl ester), the weight ratio of acrylic acid to vinyl ester in the range from 30:70 to 70 : 30 may vary;
  • Graft polymers of unsaturated carboxylic acids on low molecular weight carbohydrates or hydrogenated carbohydrates cf. US-A 5,227,446, DE-A-44 15 623, DE-A-43 13 909 are also suitable as organic cobuilders.
  • Suitable unsaturated carboxylic acids are, for example, maleic acid, fumaric acid, itaconic acid, citraconic acid, acrylic acid, methacrylic acid, crotonic acid and vinyl acetic acid and mixtures of acrylic acid and maleic acid, which are grafted on in amounts of 40 to 95% by weight, based on the component to be grafted.
  • Suitable modifying monomers are the above-mentioned monomers of groups (ii) and (iii).
  • Degraded polysaccharides such as acidic or enzymatically degraded starches, inulins or cellulose, reduced (hydrogenated or hydrogenated aminated) are used as the graft base.
  • Grafted degraded or degraded reduced starches and grafted polyethylene oxides are preferably used from this grappe, 20 to 80% by weight of monomers based on the graft component being used in the graft polymerization.
  • a mixture of maleic acid and acrylic acid in a weight ratio of 90:10 to 10:90 is preferably used for the grafting.
  • Polyglyoxylic acids as organic cobuilders are described, for example, in EP-B-001 004, US-A 5,399,286, DE-A-41 06 355 and EP-A-656 914.
  • the end groups of the polyglyoxylic acids can have different structures.
  • Polyamidocarboxylic acids and modified polyamidocarboxylic acids as organic cobuilders are known, for example, from EP-A-454 126, EP-B-511 037, WO-A 94/01486 and EP-A-581 452.
  • Polyaspartic acid or co-condensates of aspartic acid with a wide range of amino acids, C 4 -C 25 mono- or dicarboxylic acids and / or C -C 25 mono- or diamines are also preferably used as organic cobuilders.
  • organic cobuilders are particularly preferred in phosphorus-containing acids prepared with C 6 -C 2 -mono- or -dicarboxylic acids or with C 6 - C 22 used -mono- or -diamines.
  • Condensation products of citric acid with hydroxycarboxylic acids or polyhydroxy compounds as organic cobuilders are e.g. known from WO-A 93/22362 and WO-A 92/16493.
  • Such condensates containing carboxyl groups usually have molecular weights of up to 10,000, preferably up to 5,000.
  • Suitable soil release polymers and / or graying inhibitors for detergents are, for example: Polyesters of polyethylene oxides with ethylene glycol and / or propylene glycol and aromatic dicarboxylic acids or aromatic and aliphatic dicarboxylic acids;
  • Polyester made of polyethylene oxides end capped on one side with di- and / or polyhydric alcohols and dicarboxylic acid.
  • polyesters are known, for example from US-A 3,557,039, GB-A 1 154 730, EP-A-185 427, EP-A-241 984, EP-A-241 985, EP-A-272 033 and US-A 5,142,020.
  • soil release polymers are amphiphilic graft or copolymers of vinyl and / or acrylic esters on polyalkylene oxides (cf. US Pat. No. 4,746,456, US Pat. No. 4,846,995, DE-A-37 11 299, US Pat. No. 4,904,408, US Pat. A 4,846,994 and US-A 4,849,126) or modified celluloses such as Methyl cellulose, hydroxypropyl cellulose or carboxymethyl cellulose.
  • Color transfer inhibitors used are homopolymers and copolymers of vinylpyrrolidone, vinylimidazole, vinyloxazolidone and 4-vinylpyridine-N-oxide with molecular weights from 15,000 to 100,000, and crosslinked, finely divided polymers based on these monomers.
  • the use of such polymers mentioned here is known, cf. DE-B-22 32 353, DE-A-28 14287, DE-A-28 14 329 and DE-A-43 16 023.
  • Suitable enzymes are, for example, proteases, amylases, lipases and cellulases, in particular proteases. Several enzymes can be used in combination.
  • the detergent compositions which can be used according to the invention can also be used in the field of commercial textile washing and cleaning.
  • peracetic acid is used as a bleaching agent in this area of application, which is added to the wash liquor as an aqueous solution.
  • a typical powder or granular heavy-duty detergent according to the invention can have the following composition, for example:
  • a bleaching catalyst 0 to 5% by weight, preferably 0 to 2.5%, of a polymeric color transfer inhibitor
  • protease 0 to 1.5% by weight, preferably 0.1 to 1.0% by weight, protease
  • Inorganic builders that are preferably used in detergents are sodium carbonate, sodium hydrogen carbonate, zeolite A and P, and amorphous and crystalline sodium silicates.
  • Organic cobuilders preferably used in detergents are acrylic acid / maleic acid copolymers, acrylic acid / maleic acid / vinyl ester terpolymers and citric acid.
  • Inorganic bleaching agents preferably used in detergents are sodium perborate and sodium carbonate perhydrate.
  • anionic surfactants preferably used in washing agents are the linear and slightly branched alkylbenzenesulfonates (LAS), fatty alcohol sulfates and soaps according to the invention.
  • Nonionic surfactants preferably used in detergents are Cn - to C 17 -
  • Enzymes which are preferably used in detergents are protease, lipase and cellulase. Of the commercially available enzymes, amounts of 0.05 to 2.0% by weight, preferably 0.2 to 1.5% by weight, of the made-up enzyme are generally added to the detergent.
  • Suitable proteases are, for example, Savinase, Desazym and Esperase (manufacturer Novo Nordisk).
  • a suitable lipase is, for example, Lipolase (manufacturer Novo Nordisk).
  • a suitable cellulase is eg Celluzym (manufacturer Novo Nordisk).
  • Graying inhibitors and soil release polymers preferably used in detergents are graft polymers of vinyl acetate on polyethylene oxide of molecular weight 2,500-8,000 in a weight ratio of 1.2: 1 to 3.0: 1, polyethylene terephthalates / oxyethylene terephthalates of molecular weight 3,000 to 25,000 made of polyethylene oxides of molecular weight 750 to 5,000 with terephthalic acid and ethylene oxide and a molar ratio of polyethylene terephthalate to polyoxyethylene terephthalate from 8: 1 to 1: 1 and block polycondensates according to DE-A-4403 866.
  • Color transfer inhibitors preferably used in detergents are soluble vinylpyrrolidone and vinylimidazole copolymers with molecular weights above 25,000 and finely divided crosslinked polymers based on vinylimidazole.
  • the powdered or granular detergents according to the invention can contain up to 60% by weight of inorganic fillers. Sodium sulfate is usually used for this. However, the detergents according to the invention are preferably low in adjusting agents and contain only up to 20% by weight, particularly preferably only up to 8% by weight, of adjusting agents.
  • the detergents according to the invention can have different bulk densities in the range from 300 to 1,200, in particular 500 to 950 g / l.
  • Modern compact detergents generally have high bulk densities and show a granular structure. The invention is illustrated by the examples below.
  • the supernatant ethanol was removed on a rotary evaporator.
  • the mixture was then dried at 100 ° C. for 15 hours and calcined at 560 ° C. for 3 hours.
  • the catalyst obtained was then treated with a solution of 7.68 g of CsNO 3 (Aldrich # 28.99337), 13.54 g of KNO 3 (Riedel de Haen # 4018307) and 98.329 g of La (NO 3 ) 3 * 6H 2 O (Merck # 1.05326) in 23 ml of H 2 O (fully desalinated).
  • the supernatant water was removed on a rotary evaporator.
  • the mixture was then dried at 100 ° C. for 15 h and calcined at 560 ° C. for 3 h.
  • the catalyst had a BET surface area of 85 m 2 / g.
  • Mercury porosimetry measurements showed a pore volume of 0.29 ml / g.
  • 2 g of the catalyst prepared according to Example 1 are intimately mixed with 6 g of inert material (steatite) and installed in a tubular reactor with an inner diameter of 4 mm.
  • the catalyst is mixed with hydrogen at 500 ° C. for 30 min.
  • the catalyst is then exposed to a mixture of 80% by volume nitrogen and 20% by volume air (lean air) at the same temperature.
  • the catalyst is reduced for 30 min with hydrogen at 500 ° C.
  • the catalyst is then subjected to 15.3 g / h of n-dodecane (> 99% by volume) and 3.6 g / h of H 2 O at a reaction temperature of 600 ° C.
  • the pressure is 1 bar.
  • the reaction products are analyzed by gas chromatography. After a reaction time of one hour, the dodecane conversion is 20%, the selectivities to C12 olefins (sum of mono- and polyunsaturated dodecenes) are 90%.
  • 2 g of the catalyst prepared according to Example 1 are intimately mixed with 6 g of inert material (steatite) and installed in a tubular reactor with an inner diameter of 4 mm.
  • the catalyst is mixed with hydrogen at 500 ° C. for 30 min.
  • the catalyst is then exposed to a mixture of 80% by volume nitrogen and 20% by volume air (lean air) at the same temperature.
  • the catalyst is reduced for 30 min with hydrogen at 500 ° C.
  • the catalyst is then subjected to 7.6 g / h of n-hexane (> 99% by volume) and 3.6 g / h of H 2 O at a reaction temperature of 600 ° C.
  • the pressure is 1 bar.
  • a steel autoclave with a volume of 2500 ml was heated in a stream of argon at 120 ° C.
  • 750 mg of l, 3,5-tris- (2-ethylhexyl) -1, 3,5- (triazacyclohexane) CrCl 3 and 500 g of toluene dried over sodium were charged into the autoclave, and then the autoclave was thrown three times rinsed with 1-butene.
  • 50 g of a 1 M solution of methylalumoxane in toluene and 500 g of 1-butene were added to the autoclave using a lock.
  • the temperature in the autoclave was raised to 40 ° C.
  • Example 7 The procedure was as described in Example 6, but the mixture was heated at 140 ° C. for 96 h. The GC analysis of the reaction discharge showed 9.5% MLAB.
  • the depleted oleum was brought to 120 ° C. in a SO 3 developer and 14 g oleum (65% strength) were added via a dropping funnel within 30 minutes.
  • the SO 3 gas was stripped off with a nitrogen stream of 7 L / h and introduced into the alkylbenzene via an inlet tube.
  • the temperature of the alkylbenzene / alkylbenzenesulfonic acid mixture rose slowly to 40 ° C. and was kept at 40 ° C. with cooling water.
  • the residual gas was sucked off using a water jet pump.
  • the molar ratio of SO 3 / alkylbenzene is 1.17: 1.
  • the alkylbenzene sulfonic acid formed is stabilized after a reaction time of 4 hours with 1% by weight of water and then neutralized with NaOH to give the alkylbenzene sulfonate.
  • 1 -Dodecene was used as a model for a C 12 olefm from an ethene oligomerization.

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Abstract

L'invention concerne un procédé de fabrication de composés alkylaryl consistant a1) à fabriquer un mélange de C4-oléfines à partir d'un flux de GPL, GNL et méthanol/oléfine ; b1) à transformer le mélange de C4-oléfines ainsi obtenu avec un catalyseur de métathèse de manière à fabriquer un mélange oléfinique contenant du 2-pentène et/ou du 3-hexène, et éventuellement à séparer le 2-pentène et/ou le 3-hexène ; c1) à dimériser le 2-pentène et/ou le 3-hexène obtenu à l'étape b1) avec un catalyseur de dimérisation de manière à fabriquer un mélange contenant des C10-12-oléfines, et éventuellement à séparer les C10-12-oléfines ; et, d1) à transformer le mélange contenant des C10-12-oléfines obtenu à l'étape c1) avec un hydrocarbure aromatique en présence d'un catalyseur d'alkylation de manière à fabriquer des composés alkylaromatiques, des oléfines linéaires supplémentaires pouvant être additionnées avant la transformation.
EP02800145A 2001-10-01 2002-10-01 Procede de fabrication de composes alkylaryl et de sulfonates de ceux-ci Withdrawn EP1434752A2 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE2001148577 DE10148577A1 (de) 2001-10-01 2001-10-01 Verfahren zur Herstellung von Alkylarylverbindungen und Sulfonaten davon
DE10148577 2001-10-01
DE10213492 2002-03-26
DE2002113492 DE10213492A1 (de) 2002-03-26 2002-03-26 Verfahren zur Herstellung von Alkylarylverbindungen und Sulfonaten davon
PCT/EP2002/011004 WO2003029172A2 (fr) 2001-10-01 2002-10-01 Procede de fabrication de composes alkylaryl et de sulfonates de ceux-ci

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MY139380A (en) 2009-09-30
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AU2002362492A1 (en) 2003-04-14
CN1592728A (zh) 2005-03-09
BR0213039A (pt) 2004-10-05
US20040254411A1 (en) 2004-12-16
AR036710A1 (es) 2004-09-29
US7566799B2 (en) 2009-07-28

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