WO2009095126A1 - Gemische von diisononylestern der terephthalsäure, verfahren zu deren herstellung und deren verwendung - Google Patents
Gemische von diisononylestern der terephthalsäure, verfahren zu deren herstellung und deren verwendung Download PDFInfo
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- WO2009095126A1 WO2009095126A1 PCT/EP2008/066671 EP2008066671W WO2009095126A1 WO 2009095126 A1 WO2009095126 A1 WO 2009095126A1 EP 2008066671 W EP2008066671 W EP 2008066671W WO 2009095126 A1 WO2009095126 A1 WO 2009095126A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C69/00—Esters of carboxylic acids; Esters of carbonic or haloformic acids
- C07C69/76—Esters of carboxylic acids having a carboxyl group bound to a carbon atom of a six-membered aromatic ring
- C07C69/80—Phthalic acid esters
- C07C69/82—Terephthalic acid esters
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C67/00—Preparation of carboxylic acid esters
- C07C67/28—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group
- C07C67/29—Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/12—Esters; Ether-esters of cyclic polycarboxylic acids
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
Definitions
- the invention relates to diisononyl terephthalate mixtures, ie diisononyl esters of terephthalic acid, which are present as isomeric niches, in which the isomeric nonyl radicals bound in the ester mixture have a certain degree of branching. Also, the present invention relates to a method for producing such mixtures and their use.
- Polyvinyl chloride (PVC) is one of the most economically important polymers. It finds many applications both as rigid PVC and as soft PVC.
- plasticizers are added to the PVC, with phthalic acid esters, in particular di-2-ethylhexyl phthalate (DEHP), diisononyl phthalate (DINP) and diisodecyl phthalate (DIDP), being used in the majority of cases.
- DEHP di-2-ethylhexyl phthalate
- DIDP diisononyl phthalate
- DIDP diisodecyl phthalate
- plasticizers which are not subject to labeling and which can be used as DEHP or DINP substitutes and which can be produced from raw materials which are available in large quantities worldwide.
- terephthalic acid PTA or the derivative dimethyl terephthalate (DMT) is a substance that is available in large quantities with an estimated annual production in the millions of tonnes range.
- a mass product based on terephthalic acid is, for example, polyethylene terephthalate (PET). So far, however, only one monomeric ester of terephthalic acid industrially as a plasticizer for PVC has acquired a certain importance, namely di-2-ethylhexyl terephthalate (DEHT or DOTP). Diesters of phthalic acid, in particular di-2-ethylhexyl phthalates, are disclosed by James L.
- di-2-ethylhexyl terephthalate Because of the differential metabolism of di-2-ethylhexyl phthalate and di-2-ethylhexyl terephthalate, di-2-ethylhexyl terephthalate according to James L. Cooper has a significantly lower toxicity than di-2-ethylhexyl phthalate. It can therefore be assumed that other plasticizers, which are likewise based on terephthalic acid esters, undergo the same degree of complete hydrolysis to terephthalic acid during degradation and thus these terephthalates likewise have a lower toxicity than the corresponding phthalates.
- terephthalates like the phthalates, can be prepared by a one-step esterification reaction starting from readily available raw materials and an additional hydrogenation step is not required.
- terephthalate is converted to production, there is less need to adapt the production equipment and not invest in a hydrogenation stage.
- Esters of terephthalic acid and isononanol, a mixture of branched and optionally linear nonyl alcohol (s), are only slightly described in the literature and have not yet been introduced on the market as plasticizers.
- terephthalic acid esters are described as plasticizers, wherein the esters of Cs alcohols are shown to be particularly preferred, since in these the optimum of the opposite with increasing molecular weight effects softening effect and low volatility lie. Information on diisononyl terephthalates is not available.
- terephthalic acid esters are much more prone to crystallization than the corresponding phthalic esters and are also incompatible with PVC in some cases.
- terephthalic acid esters with a mean chain length of 9 carbon atoms a minimum proportion of 30% of branched alcohols is necessary to obtain liquid and PVC-compatible plasticizers.
- performance properties it is stated that terephthalic acid esters generally behave similarly to the corresponding phthalic acid esters with sides longer by one carbon atom.
- the object of the present invention was to provide diisononyl terephthalates which are well suited as plasticizers, in particular for plasticizing PVC.
- the function of a plasticizer is to reduce the glass transition temperature of the plastic to be softened so that it is sufficiently flexible even at service temperatures.
- the glass transition temperature of the material should therefore be below the service temperature.
- Suitable diisononyl terephthalates should therefore have the lowest possible glass transition temperature.
- the glass transition temperature of DEHP is valid, which is at about -80 0 C (determined by differential scanning colorimetry, DSC).
- the glass transition temperature is below -70 0 C, ideally below -80 0C.
- the technical experience teaches that the glass transition temperature is generally lower the less branched the alcohol content in the ester mixture is.
- the di-n-nonyl terephthalate should be the most suitable.
- the invention therefore relates to mixtures of diisononyl esters of terephthalic acid, in which the isomeric nonyl radicals bonded in the ester mixture have an average degree of branching of 1.0 to 2.2.
- the invention further provides a process for the preparation of mixtures of diisononyl esters of terephthalic acid, which is characterized is characterized in that in the preparation of the isononyl ester, a mixture of isomeric nonanols having an average degree of branching of 1, 0 to 2.2 is used.
- the invention provides the use of the mixtures according to the invention as a plasticizer or part of a plasticizer composition in plastics or plastic components, as an additive in paints or coatings, in adhesives or adhesive components, in sealants or as a solvent.
- the subject of the invention are plastics and
- Plastic compositions in particular based on PVC, PVB or PAMA, containing the mixtures according to the invention of diisononyl esters of terephthalic acid, and plastic products produced from these compositions.
- the mixtures of diisononyl esters of terephthalic acid according to the invention are characterized in that the isononyl radicals of the diisononyl esters contained in the mixture have a degree of branching of from 1.0 to 2.2, preferably from 1.1 to 2.1. Particularly preferred is a degree of branching of 1, 1 to 2.0 and in particular from 1, 2 to 1, 5.
- the isononyl radicals are those which are based on primary nonyl alcohols.
- the average degree of branching of the isononyl radicals in the terephthalic acid diester mixture can be determined by 1 H-NMR or 13 C-NMR methods. According to the present invention, the determination of the degree of branching is preferably carried out by means of 1 H-NMR spectroscopy on a solution of the diisononyl esters in deuterochloroform (CDCl 3 ). To record the spectra, for example, 20 mg of substance are dissolved in 0.6 ml of CDCl 3 (containing 1% by mass of TMS) and filled into a 5 mm diameter NMR tube.
- Both the substance to be investigated and the CDCI3 used can first be dried over molecular sieve in order to rule out any falsification of the measured values due to any water present.
- the method of determining the degree of branching is compared to other methods for the characterization of alcohol residues, as z.
- impurities with water have essentially no effect on the measurement results and their evaluation.
- the NMR spectroscopic In principle, investigations can be carried out with any commercially available NMR instrument. For the present NMR spectroscopic investigations, an apparatus of the type Avance 500 from Bruker was used.
- TMS tetramethylsilane
- the obtained 1 H-NMR spectra of the mixtures of diisononyl esters of terephthalic acid have in the range of 0.5 ppm to the minimum of the lowest in the range of 0.9 to 1, 1 ppm resonance signals, which are characterized by the signals of the hydrogen atoms the methyl group (s) of the isononyl groups are formed.
- the signals in the range of chemical shifts from 3.6 to 4.4 ppm can essentially be assigned to the hydrogen atoms of the methylene group which is adjacent to the oxygen of the alcohol or of the alcohol residue.
- the quantification is done by determining the area under the respective resonance signals, ie the area enclosed by the signal from the baseline.
- Commercially available NMR devices have devices for integrating the signal surface.
- the integration was performed using the software "xwinnmr", version 3.5. Then, the integral value of the signals in the range of 0.5 to the minimum of the lowest trough in the range of 0.9 to 1, 1 ppm is divided by the integral value of the signals in the range of 3.6 to 4.4 ppm and so obtained an intensity ratio indicating the ratio of the number of hydrogen atoms present in a methyl group to the number of hydrogen atoms present in a methylene group adjacent to an oxygen.
- V 2/3 * I (CH 3 ) / I (OCH 2 ) -1 can be calculated from the measured intensity ratio.
- V degree of branching
- 1 (CH 3 ) area integral, which is substantially assigned to methyl hydrogen atoms
- 1 (OCH 2 ) area integral of methylene hydrogen atoms adjacent to oxygen.
- the type and number of alcohol residues contained in the diisononyl ester mixtures can also be determined by saponification of the ester in basic solution and subsequent GC analysis of the alcohol. It should be noted that the GC conditions (in particular column material and dimensions as well as temperature program) allow a separation of the alcohols into the individual isomers.
- the mixtures of isomeric nonanols or isononanol mixtures to be used in the process according to the invention for the preparation of these mixtures of diisononyl esters of terephthalic acid can generally be prepared by hydroformylation of octenes, which in turn can be produced in different ways.
- octenes As a raw material for the preparation of the octenes are generally technical C 4 - streams, which may initially contain all isomeric C 4 olefins in addition to the saturated butanes and optionally impurities such as C 3 - and C 5 -olefins and acetylenic compounds.
- oligomerization of this olefin mixture is obtained predominantly isomeric octene mixtures in addition to higher oligomers such as C12 and C16 olefin mixtures.
- These octene mixtures are hydroformylated to the corresponding aldehydes and then hydrogenated to the alcohol.
- the composition ie the isomer distribution of these technical nonanol mixtures, depends on the starting material and on the oligomerization and hydroformylation processes. As octene mixtures z. B.
- nonanols obtained by these processes generally also contain fractions of octanols and decanols and optionally also undecanols, so that here the average chain length of 9 carbon atoms may differ.
- Typical products of this type have a distribution comprising 2-6% octanols, 70-78% nonanols, 15-25% decanols and at most 2% undecanols.
- the boiling range (boiling to dry point) is between 202 0 C and 219 0 C at atmospheric pressure. From the EU Risk Assessment on diisononyl phthalate from the polygas process (DINP 1, CAS No.
- the alcohol used for this purpose consists of 5 to 10% by mass of methyl ethylhexanols, 45 to 55% by mass of dimethyl heptanols, 5 to 20% by mass of methyl octanols, 0 to 1% by mass of n-nonanol and 15 to 25% of decanols.
- a commercially available embodiment of such an isononanol mixture which can be used to prepare the diisononyl terephthalates used according to the invention has the following composition (manufacturer: Exxon):
- Nonanol mixtures of this composition generally have a degree of branching determined in accordance with the abovementioned method of from 1.4 to 2.2, in particular from 1.5 to 2.0, more typically from 1.6 to 1.9.
- mixtures of isomeric nonanols which can be used in the process according to the invention are those obtainable by hydroformylation of a mixture of isomeric octenes and subsequent or simultaneous hydrogenation.
- the mixture of isomeric octenes is obtained by contacting a hydrocarbon mixture containing butenes with an oligomerization catalyst, in particular with a formal nickel oxide-containing catalyst.
- the hydrocarbon mixture has a proportion of isobutene of preferably less than 20% by weight, preferably less than 10% by weight, more preferably less than 5% by weight, very preferably less than 3% by weight, particularly preferably less than 1 Wt .-%, preferably between 0.01 and 1 wt .-% and particularly preferably between 0.05 and 0.5 wt .-% based on the butenes, on.
- the preparation of isomeric octenes by oligomerization of essentially linear butenes to supported nickel catalysts is e.g. B. known as OCTOL process, the z. As described in EP 0 395 857 or EP 1 029 839.
- the mixtures of isomeric octenes are then fed to a hydroformylation.
- the hydroformylation can be carried out in the presence of modified or unmodified cobalt or rhodium catalysts.
- the hydroformylation is carried out in the presence of unmodified cobalt compounds.
- the hydroformylation is then usually followed by hydrogenation.
- Such hydroformylation / Hydherungs process are z. From EP 0 850 905 and EP 1 172 349.
- the hydroformylation can also be carried out in the presence of rhodium catalysts. Such hydroformylation processes are well known.
- Nonanol mixtures of this composition generally have a degree of branching determined according to the abovementioned method of from 1.1 to 1.4, in particular 1.2 to 1.3.
- Isononanol mixtures of this composition generally have a degree of branching determined in accordance with the abovementioned method of from 1.0 to 1.4, in particular from 1.2 to 1.3.
- a mixture obtained by mixing isomerically pure nonanols and / or fractions of several isomeric nonanols can also be used as a mixture of isomeric nonanols.
- Numerous isomerically pure nonanols are commercially available.
- nonanol mixtures or fractions are commercially available which do not have the preferred properties for the inventive method.
- the isononyl alcohol mixtures to be used ideally contain not more than 0.0001 to 10 mol% of 3,5,5-thmethylhexanol.
- the mixture contains less than 5 mole%, more preferably less than 1 mole% and most preferably less than 0.5 mole% 3,5,5-thmethylhexanol.
- the proportion of n-nonanol in the isononyl alcohol mixture to be used is between 0.001 and 20 mol%, preferably between 1 and 18 mol% and particularly preferably between 5 and 15 mol%.
- the determination of the contents of 3,5,5-thmethylhexanol and n-nonanol in the alcohol mixture can be carried out in the usual way by gas chromatographic analysis methods (GC).
- GC gas chromatographic analysis methods
- nonyl alcohol mixtures obtained by saponification of the diisononyl esters according to the invention 0.001 to 20 mol%, preferably 0.5 to 18 mol%, more preferably 6 to 16 mol% of nonanols without branching (ie n-nonanol) on.
- these mixtures contain 5 to 90 mol%, preferably 10 to 80 mol%, particularly preferably 45 to 75 mol% of nonanols having a branching and 5 to 70 mol%, preferably 10 to 60 mol%, particularly preferably 15 to 35 mol% nonanols having two branches and finally 0.1 to 15 mol%, preferably 0.1 to 8 mol%, particularly preferably 0.1 to 5 mol% of nonanols having three branches.
- these nonanol mixtures can also 0 to 40 mol%, preferably 0 to 30 mol%, particularly preferably 0.1 to 6.5 wt .-%. other components included.
- terephthalic acid diisononyl esters can be prepared in the following ways: a) by transesterification of terephthalic acid esters with alkyl radicals having less than 8 carbon atoms, with a mixture of isomeric primary nonanols b) by esterification of terephthalic acid with a mixture of primary nonanols c) complete or partial transesterification of a dinonyl terephthalic acid ester or a mixture of isomeric dinonyl terephthalic acid esters with a primary nonanol or with a mixture of primary nonanols d) by mixing isomerically pure terephthalate mononyl esters with one another, mixing an isomerically pure terephthalate mononyl ester with a mixture
- the mixtures according to the invention of isomeric terephthalic acid dinonyl esters are preferably prepared on the routes a) and b).
- diisononyl terephthalate is produced by transesterification
- dimethyl terephthalate (DMT) is a preferred starting material.
- the transesterification is carried out catalytically, for example using Bronsted or Lewis acids or bases as catalyst. Regardless of which catalyst is used, there is always a temperature-dependent equilibrium between the starting materials (dialkyl terephthalate and isononanols) and the products (terephthalic acid diisononyl ester and liberated alcohol from the dialkyl terephthalate used).
- the alcohol in excess overall.
- the starting alcohol is preferably used in an excess of from 5 to 50%, in particular from 10 to 30%, of the molar amount necessary for the formation of the terephthalic acid dialkyl ester according to the invention.
- acids such as sulfuric acid, methanesulfonic acid or p-toluenesulfonic acid, or metals or their compounds can be used. Suitable metals or their compounds are z.
- tin titanium, zirconium, which are used as finely divided metals or useful in the form of their salts, as oxides or in the form of soluble organic compounds.
- the metal catalysts are in comparison to the catalysts based on proton acids high-temperature catalysts that often reach their full activity only at temperatures above 180 0 C.
- metal catalysts based on metals or their compounds, since it has been found that with these catalysts compared to catalysts based on protic acids less by-products, such as olefins are formed from the alcohol used.
- metal catalysts used with particular preference are tin powder, tin (II) oxide, tin (II) oxalate, titanic acid esters, such as tetraisopropyl orthotitanate or tetrabutyl orthotitanate, and zirconium esters, such as tetrabutyl zirconate.
- basic catalysts such as oxides, hydroxides, bicarbonates, carbonates or alkoxides of alkali or alkaline earth metals can be used.
- AI koholate such as sodium methylate used.
- Alcoholates can also be prepared in situ from an alkali metal and a nonanol or a Isononanolgemisch. Particular preference is given to using those alcoholates whose alcohol residue coincides with one of the alcohols participating in the reaction.
- the catalyst concentration can be varied within wide limits and in particular depending on the type of catalyst.
- the catalyst concentration is preferably from 0.005 to 2.0% by mass, based on the reaction mixture.
- the optimum concentrations for each catalyst can be easily determined by preliminary experiments and result from a compromise of the lowest possible catalyst consumption (ie costs) and the highest possible reaction rate.
- the particularly preferred titanium tetrabutyl orthotitanate the preferred concentration is, for example, in the range from 0.05 to 1% by mass, based on the dialkyl terephthalate used.
- the transesterification is preferably carried out at a temperature of 100 and 220 0 C.
- the temperature is particularly preferably chosen so high that the alcohol formed from the starting material ester can be distilled off from the reaction mixture at the predetermined pressure.
- the preparation of the mixtures of terephthalate according to the invention by esterification of terephthalic acid with a mixture of primary nonanols can be carried out by all known methods.
- the esterification step is carried out by a process in which the water of reaction is removed by azeotropic distillation with the alcohol and the amount of liquid removed from the reaction by the azeotropic distillation is completely or partially replenished with the alcohol.
- the amount of liquid referred to hereinafter is the volume of liquid removed from the reaction by azeotropic distillation, mainly consisting of water of reaction and alcohol. Complete replacement of the removed amount of liquid is preferred. This can be z. B. by a controlled feed of alcohol into the reactor.
- the removed amount of liquid is only partially, z. B. only the alcohol, but not the remote reaction water, but in any case to more than 90%, preferably 95 to 98% replaced.
- the water of reaction is replaced, and further alcohol is added.
- the esterification is replaced by alcohol from 110 to 100%, preferably 105 to 100% of the removed amount of liquid.
- This embodiment of the esterification has the advantage that the reaction rate is increased in comparison to known batch processes. As a result, the cycle time can be shortened, thereby achieving a higher space-time yield wind.
- the esterification can be carried out autocatalyzed or catalyzed.
- esterification catalysts Lewis or Bröndstedt acids or organometallic substances, which need not necessarily act as acid, can be used.
- Preferred esterification catalysts are alcoholates, carboxylic acid salts or chelate compounds of titanium or zirconium, wherein the catalyst molecule may contain one or more metal atoms.
- tetra (isopropyl) orthotitanate and tetra (butyl) orthotitanate are used.
- the esterification is preferably carried out in a reaction vessel in which the reaction mixture can be mixed intensively with the aid of a stirrer or a circulation pump.
- the educts and the catalyst can be introduced into the reactor simultaneously or in succession. If a feedstock is solid at the fill temperature, it is convenient to submit the liquid feed component. Solid feedstocks can be fed as powder, granules, crystals or melt. In order to shorten the batch time, it is advisable to start heating up during filling.
- the catalyst can be in pure form or as a solution, preferably dissolved in one of the starting materials, be introduced at the beginning or only after reaching the reaction temperature.
- the alcohol to be converted which serves as an entraining agent, can be stoichiometric
- the catalyst concentration depends on the type of catalyst. In the case of the titanium compounds which are preferably used, this is 0.005 to 1.0% by mass, based on the reaction mixture, in particular 0.01 to 0.3% by mass.
- the reaction temperatures are between when using titanium catalysts
- the desired temperature or the desired temperature range can be adjusted by the pressure in the reaction vessel.
- the amount of liquid attributable to the reaction may be partially or wholly made from alcohol obtained by working up the azeotropic distillate. It is also possible to carry out the work-up at a later time and the removed liquid amount in whole or in part by fresh alcohol, d. H. replace alcohol from a storage container.
- the separated liquid becomes the
- Alcohol preferably worked up to pure alcohol.
- reaction mixture consisting essentially of full ester (target product) and excess alcohol, in addition to the
- Catalyst destroyed and separated the resulting solid by-products The major part of the alcohol is distilled off under atmospheric pressure or in vacuo. The last traces of the alcohol can z. B. by steam distillation, especially in the temperature range of 120 to 225 0 C, be removed. The separation of the alcohol can be carried out, for example, as a first or last work-up step.
- the neutralization of the acidic substances can be carried out by adding basic compounds of the alkali and alkaline earth metals. These can be used in the form of their carbonates, bicarbonates or hydroxides.
- the neutralizing agent can be used in solid form or preferably as a solution, in particular as an aqueous solution.
- the neutralization can be carried out immediately after completion of the esterification reaction or after distilling off the bulk of the excess alcohol.
- the neutralization with sodium hydroxide solution immediately after completion of the esterification reaction at temperatures above 150 0 C.
- the introduced with the lye water can then be distilled off together with alcohol.
- esterification step z.
- EP 1 186 593 and EP 1 300 388 are taken. It may be particularly advantageous if the esterification is carried out as described in DE 10 2005 021 075.9.
- the diisononyl terephthalate mixtures according to the invention can advantageously be used as plasticizer or part of a plasticizer composition in plastics or plastic components, as an additive in paints or coatings, in adhesives or adhesive components, in sealants or as a solvent.
- the diisononyl terephthalate mixtures according to the invention have the following advantages:
- the diisononyl terephthalates according to the invention are more universally usable, since they are liquid at room temperature and thus also in the quantitatively significant Plastisolreaen, in which only by a liquid plasticizer phase, the application is possible at room temperature, can be used.
- the diisononyl terephthalate mixtures according to the invention or mixtures thereof with plastics may also contain further compounds which can be used as plasticizers. These compounds, which are particularly preferably esters, include, for example, the following compounds:
- Phthalic acid dialkyl ester preferably having 4 to 13 carbon atoms in the AI kyl chain; Trimellitic acid trialkyl ester, preferably having 6 to 10 C atoms in the side chain; Adipic acid dialkyl esters, preferably having 6 to 10 C atoms;
- Terephthalic acid dialkyl esters each preferably having 4 to 8 C atoms, in particular 4 to 5 C atoms in the side chain; 1, 2-cyclohexanedioic acid alkyl ester, 1, 3-Cyclohexandiklarealkylester and 1, 4-Cyclohexandiklarealkylester, in this case preferably 1, 2-Cyclohexandiklarealkylester, each preferably having 4 to 10 carbon atoms in the side chain; Dibenzoic acid esters of glycols; Alkylsulfonklarester of phenol preferably having an alkyl radical containing 8 to 22 carbon atoms; Polymeric plasticizers; Glycerinester, Citronenklarethalkylester with free or carboxylated OH group and alkyl radicals of 4 to 10 carbon atoms and alkyl benzoates, preferably having 7 to 13 carbon atoms in the alkyl chain.
- the alkyl radicals may be linear or branched and the same
- the composition particularly preferably has a benzoic acid alkyl ester having 7 to 13 carbon atoms in the alkyl radical, preferably isononyl benzoate, monosyl benzoate, isodecyl benzoate or dicyclo benzoate or benzoic acid 2-propylheptyl ester. Also particularly preferred is a mixture of diisononyl terephthalates with dipentyl terephthalates.
- the proportion of diisononyl terephthalates according to the invention in the mixture with other plasticizers is preferably from 15 to 95%, particularly preferably from 20 to 90% and very particularly preferably from 25 to 85%, with the mass proportions of all plasticizers present adding up to 100%.
- compositions of diisononyl terephthalate and other plasticizers mentioned may be used as a softening composition in plastics and plastics compositions, adhesives, sealants, paints, inks, plastisols or inks.
- the plastic compositions of the invention containing diisononyl terephthalate mixtures according to the invention may include polymers selected from polyvinyl chloride (PVC), polyvinylidene chloride (PVDC), polyacrylates, especially polymethyl methacrylate (PMMA), polyalkyl methacrylate (PAMA), fluoropolymers, especially polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE ), Polyvinyl acetate (PVAc, polyvinyl alcohol (PVA), polyvinyl acetals, in particular polyvinyl butyral (PVB), polystyrene polymers, in particular polystyrene (PS), expandable polystyrene (EPS
- compositions according to the invention preferably comprise PVC or homopolymers or copolymers based on ethylene, propylene, butadiene, vinyl acetate, glycidyl acrylate, glycidyl methacrylate, methacrylates, acrylates, acrylates or methacrylates with alkyl radicals of branched or unbranched alcohols having one to ten carbon atoms bound to the oxygen atom of the ester group (n), styrene, acrylonitrile or cyclic olefins.
- composition according to the invention preferably contains, as PVC type, suspension, bulk, microsuspension or emulsion PVC. Based on 100 parts by mass of polymer, the compositions according to the invention preferably contain from 5 to 200, preferably from 10 to 150, parts by mass of plasticizer according to the invention.
- compositions according to the invention may contain, in addition to the constituents mentioned, further constituents, in particular z.
- plasticizers fillers, pigments, stabilizers, co-stabilizers such as epoxidized soybean oil, lubricants, propellants, kickers, antioxidants or biocides.
- compositions of diisononyl terephthalates and the abovementioned polymer materials according to the invention can be used as plastic compositions, adhesives, sealants, lacquers, paints, plastisols, artificial leather, Floor coverings, underbody protection, fabric coatings, wallpapers or inks or used for their production.
- Plastic products made with the softening compositions may be for example: profiles, gaskets, food packaging, films,
- Preferred applications from this group are food packaging,
- Example 1 (Inventive) Preparation of Diisononyl Terephthalate (DINTP) from Terephthalic Acid and Isononanol from Evonik OXENO Olefin Chemistry
- DINTP Diisononyl Terephthalate
- Isononanol from Evonik OXENO Olefin Chemistry
- a 4 liter stirred flask with distillation bridge with reflux divider, 20 cm Multifill column, stirrer, dip tube, dropping funnel and thermometer was charged with 830 g (5 mol) Terephthalic acid (Sigma Aldrich), 2.08 g (0.25% by mass based on terephthalic acid) of tetrabutyl orthotitanate and 1800 g (12.5 mol) of a lsononanols (Evonik OXENO Olefinchemie) produced by the OCTOL process esterified at 230 0 C.
- DINTP Diisononyl Terephthalate
- the degree of branching of the alcohol side chain of this ester was determined to be XX.
- DSC differential scanning calorimetry
- Example 3 (Inventive): Preparation of DINTP from terephthalic acid and isononanol from ExxonMobil
- the determined by DSC glass transition temperature (according to DIN average) was determined to be -76 0 C.
- the degree of branching of the alcohol side chain of this ester was determined to be XX.
- Example 4 (comparative example): Preparation of DINTP from terephthalic acid and n-nonanol
- n-nonanol FLUKA was esterified with terephthalic acid and worked up as described above. Upon cooling to room temperature, the product, which according to GC had an ester content of> 99.8%, solidifies.
- the melting point was determined to be 46 ° C. by means of DSC using the increase in the melting signal (so-called "onset"). A glass point could not be detected.
- Example 6 Preparation of plastisols With the diisononyl terephthalate according to the invention prepared according to Example 1, a plastisol was prepared as follows:
- the plastisol was again stirred in the storage container with a spatula and measured in the measuring system Z3 (DIN 25 mm) according to the operating instructions.
- the preparation of the measured data was carried out automatically by the software after the measurement.
- the viscosity was shown as a function of the Shear rate.
- the measurement was carried out after a storage period of 2 hours under standard conditions.
- Diagram 1 shows the viscosity of the plastisol as a function of the shear rate.
- the plastisol is readily processable because the viscosities of the plastisol are relatively low in the mid-shear rate range (10 sec -1 ) and the increase in the higher shear rate range is relatively moderate.
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Abstract
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES08871887.9T ES2476610T3 (es) | 2008-01-28 | 2008-12-03 | Mezclas de ésteres diisonon�licos del ácido tereft�lico, procedimiento para su preparación y su utilización |
EP08871887.9A EP2234957B1 (de) | 2008-01-28 | 2008-12-03 | Gemische von diisononylestern der terephthalsäure, verfahren zu deren herstellung und deren verwendung |
CA2711680A CA2711680C (en) | 2008-01-28 | 2008-12-03 | Mixtures of isomeric dinonyl esters of terephthalic acid, method for the production thereof and use thereof |
PL08871887T PL2234957T3 (pl) | 2008-01-28 | 2008-12-03 | Mieszaniny estrów diizononylowych kwasu tereftalowego, sposób ich wytwarzania i ich zastosowania |
DK08871887.9T DK2234957T3 (da) | 2008-01-28 | 2008-12-03 | Blandinger af diisononylestere af terephthalsyre, fremgangsmåde til fremstilling heraf og anvendelse heraf |
CN2008801257631A CN101925571A (zh) | 2008-01-28 | 2008-12-03 | 对苯二甲酸二异壬基酯混合物、其制备方法及其用途 |
JP2010544602A JP5812605B2 (ja) | 2008-01-28 | 2008-12-03 | テレフタル酸のジイソノニルエステルの混合物、その製法及びその使用 |
US12/811,163 US8329796B2 (en) | 2008-01-28 | 2008-12-03 | Mixtures of diisononyl esters of terephthalic acid, method for the production thereof and use thereof |
SI200831233T SI2234957T1 (sl) | 2008-01-28 | 2008-12-03 | Mešenice diizononil estrov tereftalne kisline, postopek njihove izdelave in njihova uporaba |
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DE102008006400.9 | 2008-01-28 | ||
DE102008006400A DE102008006400A1 (de) | 2008-01-28 | 2008-01-28 | Gemische von Diisononylestern der Terephthalsäure, Verfahren zu deren Herstellung und deren Verwendung |
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WO2009095126A1 true WO2009095126A1 (de) | 2009-08-06 |
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PCT/EP2008/066671 WO2009095126A1 (de) | 2008-01-28 | 2008-12-03 | Gemische von diisononylestern der terephthalsäure, verfahren zu deren herstellung und deren verwendung |
Country Status (12)
Country | Link |
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US (1) | US8329796B2 (de) |
EP (1) | EP2234957B1 (de) |
JP (1) | JP5812605B2 (de) |
KR (1) | KR101582699B1 (de) |
CN (2) | CN107936291A (de) |
CA (1) | CA2711680C (de) |
DE (1) | DE102008006400A1 (de) |
DK (1) | DK2234957T3 (de) |
ES (1) | ES2476610T3 (de) |
PL (1) | PL2234957T3 (de) |
SI (1) | SI2234957T1 (de) |
WO (1) | WO2009095126A1 (de) |
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Also Published As
Publication number | Publication date |
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DK2234957T3 (da) | 2014-07-21 |
CA2711680A1 (en) | 2009-08-06 |
PL2234957T3 (pl) | 2014-08-29 |
CA2711680C (en) | 2016-05-24 |
KR101582699B1 (ko) | 2016-01-05 |
JP5812605B2 (ja) | 2015-11-17 |
JP2011510937A (ja) | 2011-04-07 |
EP2234957B1 (de) | 2014-04-23 |
CN101925571A (zh) | 2010-12-22 |
DE102008006400A1 (de) | 2009-07-30 |
KR20100116176A (ko) | 2010-10-29 |
EP2234957A1 (de) | 2010-10-06 |
US20100305255A1 (en) | 2010-12-02 |
US8329796B2 (en) | 2012-12-11 |
SI2234957T1 (sl) | 2014-08-29 |
ES2476610T3 (es) | 2014-07-15 |
CN107936291A (zh) | 2018-04-20 |
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