WO2006058679A1 - Verfahren zur herstellung von polyoxymethylenen - Google Patents
Verfahren zur herstellung von polyoxymethylenen Download PDFInfo
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- WO2006058679A1 WO2006058679A1 PCT/EP2005/012673 EP2005012673W WO2006058679A1 WO 2006058679 A1 WO2006058679 A1 WO 2006058679A1 EP 2005012673 W EP2005012673 W EP 2005012673W WO 2006058679 A1 WO2006058679 A1 WO 2006058679A1
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- WIPO (PCT)
- Prior art keywords
- zone
- polymerization
- diameter
- deactivation
- reactor
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/18—Copolymerisation of aldehydes or ketones
- C08G2/22—Copolymerisation of aldehydes or ketones with epoxy compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/24—Stationary reactors without moving elements inside
- B01J19/2415—Tubular reactors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/08—Polymerisation of formaldehyde
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/10—Polymerisation of cyclic oligomers of formaldehyde
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2/00—Addition polymers of aldehydes or cyclic oligomers thereof or of ketones; Addition copolymers thereof with less than 50 molar percent of other substances
- C08G2/30—Chemical modification by after-treatment
Definitions
- the invention relates to an improved process for the preparation of polyoxymethylenes and the POM polymers obtainable in this process.
- a particular problem in the melt polymerization is the addition of the terminator.
- a low molecular weight component in very small amounts inorganic salts or organic bases
- the terminating agents are always introduced according to the prior art with an auxiliary (water, alcohols but also other solvents) in the reaction mixture, see, e.g. DE-A 37 03 790.
- the amount introduced is ideally matched to the amount of initiator, since excess base (no vapor pressure) can not be removed. You can also work in excess. In either case, it is desirable to minimize the amount of terminator in order to improve product quality.
- Another object was to produce polyoxymethylene homopolymers or copolymers which contain the lowest possible levels of low molecular weight POM.
- a process for the preparation of polyoxymethylenes by polymerization of the monomers a) in the presence of cationic initiators b) and optionally in the presence of regulators c) and subsequent deactivation and separation of the polymer was found, characterized in that the polymerization in a tubular reactor with static Performs mixing elements, which has a mixing zone, a polymerization zone and a deactivation zone and the diameter of the tubular reactor in the mixing zone is ⁇ 90% of the diameter in the polymerization zone.
- the process may in principle be performed on any high mixing efficiency reactor, such as, for example, trays, ploughshare mixers, tubular reactors, lump reactors, kneaders, stirred reactors, extruders and belt reactors.
- trays ploughshare mixers
- tubular reactors such as, for example, trays, ploughshare mixers, tubular reactors, lump reactors, kneaders, stirred reactors, extruders and belt reactors.
- Suitable reactors include: Kenics (Chemineer Inc.); interfacial surface generator lSG and low pressure drop mixer (Ross Engineering Ine); SMV, SMX, SMXL, SMR (Sulzer Koch-Glitsch); Inliner series 45 (Lightnin Inc.); CSE mixer (Fluentec Georg AG).
- these polymers have at least 50 mole percent of repeating units - CH 2 O - in the polymer backbone.
- the homopolymers are generally prepared by the polymerization of monomers a) such as formaldehyde or trioxane, preferably in the presence of suitable catalysts.
- polyoxymethylene copolymers in particular those which, in addition to the repeating units -CH 2 O-, also contain up to 50, preferably 0.01 to 20, in particular 0.1 to 10 mol% and very particularly preferably 0, 5 to 3 mol% of recurring units.
- R 1 to R 4 are independently a hydrogen atom, a C 1 -Ws C 4 alkyl group or a halogen-substituted alkyl group having 1 to 4 C atoms and R 5 is a - CH 2 -, -CH 2 O -, a C 1 to C 4 alkyl or C 1 to C 4 haloalkyl substituted methylene group or a corresponding oxymethylene group and n has a value in the range of 0 to 3.
- these ring opening groups of cyclic ethers can be introduced into the copolymers.
- Preferred cyclic ethers are those of the formula
- R 1 to R 5 and n have the abovementioned meaning.
- ethylene oxide, 1, 2-propylene oxide, 1, 2-butylene oxide, 1, 3-butylene oxide, 1, 3-dioxane, 1, 3-dioxane and 1, 3-dioxepane as cyclic ethers and linear oligo- or polyformals such as polydioxolane or polydioxepan called comonomers.
- Oxymethylenterpolymerisate for example, by reacting trioxane, one of the cyclic ethers described above with a third monomer, preferably bifunctional compounds of the formula
- Preferred monomers of this type are ethylene diglycide, diglycidyl ether and diether from glycidylene and formaldehyde, dioxane or trioxane in the molar ratio 2: 1 and diether from 2 mol glycidyl compound and 1 mol of an aliphatic diol having 2 to 8 carbon atoms such as the diglycidyl ethers of ethylene glycol, 1 , 4-butanediol, 1, 3-butanediol, cyclobutane-1, 3-diol, 1, 2-propanediol and cyclohexane-1, 4-diol, to name just a few examples.
- End-group stabilized polyoxymethylene polymers which have C-C or -O-CH 3 bonds at the chain ends are particularly preferred.
- the preferred polyoxymethylene copolymers have melting points of at least 150 ° C. and weight average molecular weights M.sub.w in the range of 5,000 to 300,000, preferably 7,000 to 250,000.
- POM copolymers having a nonuniformity (M w / M n ) of from 2 to 15, preferably from 3 to 12, particularly preferably from 3.5 to 9.
- the measurements are generally carried out by (GPC) SEC (size exclusion
- the M n value (number average molecular weight) is generally determined by (GPC) SEC (size exclusion chromatography).
- the POM polymers obtainable by the process preferably have a unimodal molecular weight distribution, the low molecular weight fraction being low.
- the polyoxymethylene homopolymers or copolymers have in particular quotients of the d 50 / d 10 values (based on M w ) of 2.25 to 5.5, preferably of 2.75 to 5 and in particular 3.2 to 4.5.
- the quotient of the dgo / dsr values (based on M w ) is preferably from 1.25 to 3.25, preferably from 1.75 to 2.75 and in particular from 2 to 2.5.
- the POM polymers have very low proportions of low molecular weight fractions and preferably an asymmetric, unimodal distribution curve, the difference of the abovementioned quotients d 50 / d 10 to d 10 / d 5 o being at least 0.25, preferably 1 to 3 and in particular 1 , 0 to 2.3.
- a d 50 value is understood by the skilled person to mean the value at which 50% of the polymer has a smaller M w and correspondingly 50% has a larger M w .
- the crude polyoxymethylenes obtainable by the process according to the invention preferably have a residual formaldehyde content in accordance with VDA 275 in the granules of not more than 3%, preferably not more than 1%, preferably not more than 0.05%.
- the process of the invention is preferably used for the homo- and the copolymerization of trioxane.
- monomer a it is possible in principle to use any of the monomers described above, for example tetroxane or (para) formaldehyde.
- the monomers for example trioxane, are preferably metered in the molten state, generally at temperatures of 60 to 180 ° C.
- the molecular weights of the polymer can optionally be adjusted to the desired values by the regulators c) customary in the (trioxane) polymerization.
- Suitable regulators are acetals or formals of monohydric alcohols, the alcohols themselves and the small amounts of water acting as chain transfer agents whose presence generally can never be completely avoided.
- the regulators are used in amounts of from 10 to 10,000 ppm, preferably from 50 to 5,000 ppm.
- Initiators b) (also referred to as catalysts) are the cationic initiators customary in (trioxane) polymerization.
- Proton acids are suitable, such as fluorinated or chlorinated alkyl- and arylsulfonic acids, eg perchloric acid, trifluoromethanesulfonic acid or Lewis acids, for example tin tetrachloride, arsenic pentafluoride, phosphoric pentafluoride and boron trifluoride and their complex compounds and salt-like compounds, for example boron trifluoride etherates and triphenylmethylene hexafluorophosphate.
- the catalysts (initiators) are used in amounts of about 0.001 to 1000 ppm, preferably 0.01 to 500 ppm and in particular from 0.05 to 10 ppm.
- Suitable solvents for this purpose are inert compounds such as aliphatic, cycloaliphatic hydrocarbons such as cyclohexane, halogenated aliphatic hydrocarbons, glycol ethers, etc. can be used. Particular preference is given to triglyme as solvent (triethylene glycol dimethyl ether) and 1,4-dioxane.
- Monomers and comonomers a), initiators b) and, if appropriate, regulator c) can be premixed in any desired manner or else added separately to the polymerization reactor.
- the components a), b) and / or c) may contain sterically hindered phenols for stabilization as described in EP-A 129369 or EP-A 128 739.
- the polymerization is carried out in a tubular reactor which has a mixing zone, a polymerization zone and a deactivation zone.
- the diameter of the tube reactor in the mixing zone is according to the invention ⁇ 90%, preferably 10 to 90%, preferably 10 to 70%, in particular 10 to 60% of the diameter of the polymerization zone, u.z. each related to the largest diameter in the polymerization zone.
- the number of webs of the static mixing elements in the mixing zone is 0 to 500%, preferably 0 to 300% and in particular 0 to 100% higher than in the polymerization zone.
- the mixing zone can be divided into sections of different diameters. Preferably, the diameter of the entire mixing zone in the reactor is the same.
- the residence time in the mixing zone is preferably from 1 to 300 seconds, in particular 5 to 60 seconds.
- the shear in the reactor in the mixing zone is preferably 5 to 1000, preferably 10 to 750 and in particular 20 to 500 1 / s.
- the shear in the static mixer is calculated according to:
- the viscosity is preferably 0.1 mPas to 100 Pas, preferably 0.1 mPas to 10 Pas.
- NeRe static mixer index - Newton Reynolds number
- the residence time for the polymerization is preferably 0.1 to 40 minutes, in particular 1 to 20 minutes.
- the polymerization is preferably carried out to a conversion of at least 30%, in particular more than 60%.
- the polymerization zone can be divided into sections of different diameters, in particular 2 to 10 sections, preferably 2 to 5 sections.
- the smallest diameter is to the largest diameter preferably 20 to 100%, in particular 30 to 90% and particularly preferably 45 to 75%.
- the shear in the polymerization zone is preferably 1 to 300, preferably 2 to 100 and in particular 3 to 50 1 / s.
- the viscosity is preferably 1 to 1000, preferably 10 to 500 and in particular 100 to 400 Pas.
- the polymerization mixture is deactivated directly after the polymerization, preferably without a phase change taking place.
- the deactivation of the catalyst residues is usually carried out by adding at least one deactivator d).
- Suitable deactivators are e.g. Ammonia, aliphatic and aromatic amines, basic salts such as soda and borax. These are usually added to the polymers in amounts of preferably up to 1% by weight.
- the organic compounds of the (alkaline) alkali metals include the corresponding salts of (cyclo) aliphatic, araliphatic or aromatic carboxylic acids having preferably up to 30 carbon atoms and preferably 1 to 4 carboxyl groups.
- salts with other acidic residues such as Alkali-paraffin, alkali-olefin and alkali arylsulfonates or else phenolates and also alcoholates, such as e.g. Methanolates, ethanolates, glycolates can be used according to the invention.
- sodium salts of mono- and polycarboxylic acids in particular the aliphatic mono- and polycarboxylic acids, preferably those having 2 to 18 carbon atoms, in particular having 2 to 6 carbon atoms and up to four, preferably up to two carboxyl groups, and sodium alcoholates with preferably 2 to 15, especially 2 to 8 carbon atoms used.
- particularly preferred representatives are sodium acetate, sodium propionate, sodium butyrate, sodium oxalate, sodium malonate, sodium succinate, sodium methoxide, sodium ethoxide, Natirumglykonat.
- Very particular preference is given to sodium methoxide, which is used particularly advantageously in an amount of 1-5 times equimolar to the component b) used. It can too Mixtures of various (alkaline) alkali metal compounds are used, wherein also hydroxides are used.
- alkaline earth metal alkyls are preferred as deactivators d) which have 2 to 30 C atoms in the alkyl radical.
- deactivators d particularly preferred metals called its Li, Mg and Na, with n-butyllithium being particularly preferred.
- Preferred deactivators d) are those of the formula I.
- R 1 , R 3 , R 4 and R 5 are independently hydrogen or a Ci-C 10 alkyl group and
- R 2 is hydrogen or a dC 10 alkyl group or OR 5 .
- Preferred radicals R 1 to R 5 are, independently of one another, hydrogen or a C 1 -C 4 -alkyl group, such as methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, s-butyl, t-butyl.
- deactivators d) are substituted N-containing heterocycles, in particular derivatives of piperidine, with triacetonediamine (4-amino-2,2,6,6-tetramethylpiperidine) being particularly preferred.
- the deactivator is, based on the throughput of trioxane in amounts of 0.001 to 25 ppm, preferably 0.01 to 5 ppm, in particular 0.05 to 2 ppm added.
- the deactivator is preferably present diluted in one of the following carrier / solvent.
- the concentration of the deactivator in the carrier / solvent is 0.001 to 10%, preferably 0.01 to 5%, in particular 0.05 to 2%, very particularly preferably 0.1 to 1%.
- the diameter of the tube reactor in the deactivation zone is according to the invention ⁇ 95%, preferably from 20 to 95%, in particular from 30 to 90% and particularly preferably from 50 to 85% of the diameter in the polymerization zone.
- the number of webs of the static mixing elements in the deactivation zone is 0 to 500%, preferably 50 to 300% and in particular 50 to 200% higher than in the polymerization zone.
- the deactivation zone can be divided into sections of different diameters, in particular from 1 to 5 sections, preferably 2 sections.
- the diameter of the smallest portion is in this case 20 to 100%, preferably 30 to 90% of the diameter of the largest portion, and in particular 50 to 90%.
- the first section contains a 20 to 500, preferably 50 to 300 and in particular 50 to 200% higher number of bars than in the polymerization zone and the second section a -100 to 500 , -100 to 300 and preferably -100 to 200% higher number of bars than in the polymerization zone.
- the shear in the deactivation zone is preferably 0.1 to 500, preferably 1 to 100 and in particular 3 to 75 1 / s.
- the shear in the smallest diameter section, preferably the 1st section following the polymerization zone is 10 to 200, preferably 15 to 100 and more preferably 20 to 75 1 / s.
- the viscosity is preferably 1 to 1000, preferably 100 to 800 and in particular 150 to 600 Pas.
- the residence time in the deactivation zone is preferably from 0.5 to 20 minutes, in particular from 1 to 10 minutes.
- the deactivator d) is preferably added in an aprotic, non-aromatic solvent, for example the abovementioned monomers and comonomers, such as dioxolane, trioxane, butanediol formal, ethylene oxide or oligomeric to polymeric polyacetals.
- an aprotic, non-aromatic solvent for example the abovementioned monomers and comonomers, such as dioxolane, trioxane, butanediol formal, ethylene oxide or oligomeric to polymeric polyacetals.
- the deactivator d) is added to the polymerization mixture in a carrier with ether structural units.
- Carrier substances which have the same structural units which are present in the particular POM polymer to be produced are preferably suitable. These are in particular the monomers a) listed above and oligomeric to polymeric polyoxymethylene or polyacetals.
- the preferably liquid addition takes place at temperatures of 140 to 220 0 C. If oligomeric or polymeric POM polymers are used as carrier substances, addition in liquid form at temperatures of 160 to 220 ° C. is likewise preferred. Such polymers may optionally contain conventional additives. For metering such melts of the carrier substances which contain the deactivators d), devices such as side extruder, plug screw, melt pump, etc. are preferably used.
- the resulting polymer is transferred to a degassing device.
- the stopping agent (deactivator) can be better dosed and mixed.
- the POM obtainable by the process according to the invention has quality advantages such as improved thermal stability, color, lower chain degradation, good flowability and mechanics.
- polyacetals with multimodal, preferably bimodal molecular weight distributions.
- Trioxane stream is polymerized in parallel tubular reactors (at least 2) and fractions of different molar mass are formed, which are then mixed.
- the desired polymer can be prepared by one or a combination of parameters, which is then mixed again before or after the mixing zone with the terminating agent, after the deactivating zone or in the degassing step or on the extruder. It is also possible to mix substreams at said locations.
- the tubular reactor consisted of a reaction zone and a termination zone.
- the reaction zone again consisted of 3 sections with different diameters (1st reactor shot 12 mm, 2nd reactor shot 15 mm, 3rd reactor shot 27 mm).
- the demolition zone consisted of 2 sections with different diameters (1st reactor shot 8-flight 17 mm, 2nd reactor shot 4-flight 27 mm).
- the pipeline between reactor and degassing also functioned as a demolition zone.
- triacetonediamine was metered in as a terminating agent (as a 0.1% strength by weight solution in 1,3-dioxolane) in the demolition zone of the reactor and mixed in via a static mixer so that the terminating agent was in 10 times the weight - surplus to perchloric acid was present.
- the product (crude POM) was released via a control valve into a degassing pot to a pressure of 3 bar, whereby the volatile components were separated from the polymer melt. Residues of trioxane and formaldehyde remained in the polymer melt.
- the product was discharged and subjected to GPC.
- the tube reactor consisted of a smooth tube equipped with metering devices for the initiator and the stopper.
- the metering devices were mounted at an angle of 60 ° to the flow direction.
- the diameter of the tube is 12 mm.
- Static mixing elements were added to mix in the initiator and the terminator.
- the temperature in the reactor is controlled by a double jacket in the reaction zone (165 ° C) and the termination zone (195 ° C).
- triacetonediamine was metered in as a terminating agent (as a 0.1% strength by weight solution in 1,3-dioxolane) in the demolition zone of the reactor and mixed in via a static mixer, so that the terminator in 10 times the substance - surplus to perchloric acid was present.
- the product was released via a control valve into a degassing pot to a pressure of 3 bar, whereby the volatile components were separated from the polymer melt. Residues of trioxane and formaldehyde remained in the polymer melt.
- the product was discharged and subjected to GPC.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
- Polyethers (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200580041026XA CN101068840B (zh) | 2004-11-30 | 2005-11-28 | 制备聚甲醛的方法 |
| EP05815897A EP1819745A1 (de) | 2004-11-30 | 2005-11-28 | Verfahren zur herstellung von polyoxymethylenen |
| KR1020077014888A KR101246508B1 (ko) | 2004-11-30 | 2005-11-28 | 폴리옥시메틸렌의 제조 방법 |
| JP2007541858A JP5502280B2 (ja) | 2004-11-30 | 2005-11-28 | ポリオキシメチレンの製造方法 |
| US11/720,414 US7863393B2 (en) | 2004-11-30 | 2005-11-28 | Method for producing polyoxymethylenes |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004057867.2 | 2004-11-30 | ||
| DE102004057867A DE102004057867A1 (de) | 2004-11-30 | 2004-11-30 | Verfahren zur Herstellung von Polyoxymethylenen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006058679A1 true WO2006058679A1 (de) | 2006-06-08 |
Family
ID=35621394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/012673 Ceased WO2006058679A1 (de) | 2004-11-30 | 2005-11-28 | Verfahren zur herstellung von polyoxymethylenen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US7863393B2 (de) |
| EP (1) | EP1819745A1 (de) |
| JP (1) | JP5502280B2 (de) |
| KR (1) | KR101246508B1 (de) |
| CN (1) | CN101068840B (de) |
| DE (1) | DE102004057867A1 (de) |
| WO (1) | WO2006058679A1 (de) |
Cited By (6)
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| WO2007036476A1 (de) * | 2005-09-28 | 2007-04-05 | Basf Aktiengesellschaft | Verfahren zur herstellung von polyoxymethylenen in einem rohrreaktor mit dynamischen mischungszonen |
| WO2009127387A1 (de) * | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Polyoxymethylen-formmassen und formkörper und deren verwendung |
| WO2009127388A1 (de) * | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Oxymethylenpolymere, verfahren zu deren herstellung und deren verwendung |
| US8133966B2 (en) | 2008-04-16 | 2012-03-13 | Ticona Gmbh | Oxymethylene copolymers and the use thereof and process for the preparation of oxymethylene copolymers |
| US8354495B2 (en) | 2008-04-16 | 2013-01-15 | Ticona Gmbh | Process for the preparation of oxymethylene polymers and apparatus suitable for this purpose |
| WO2014191171A1 (en) * | 2013-05-29 | 2014-12-04 | Basf Se | Continuous process for the preparation of polyoxazolines |
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| DE102004005652A1 (de) | 2004-02-04 | 2005-08-25 | Basf Ag | Fließfähige Polyesterformmassen |
| DE102004005657A1 (de) | 2004-02-04 | 2005-08-25 | Basf Ag | Fließfähige Polyesterformmassen |
| DE102004035357A1 (de) | 2004-07-21 | 2006-03-16 | Basf Ag | Kontinuierliches Verfahren zur Herstellung von Polyalkylenarylaten mit hyperverzweigten Polyestern und/oder Polycarbonaten |
| DE102004038976A1 (de) | 2004-08-10 | 2006-02-23 | Basf Ag | Fließfähige Polyesterformmassen mit ASA/ABS und SAN |
| DE102004038979A1 (de) | 2004-08-10 | 2006-02-23 | Basf Ag | Schlagzähmodifizierte Polyester mit hyperverzweigten Polyestern |
| DE102004049342A1 (de) | 2004-10-08 | 2006-04-13 | Basf Ag | Fließfähige Thermoplaste mit halogenfreiem Flammschutz |
| DE102004050025A1 (de) | 2004-10-13 | 2006-04-20 | Basf Ag | Fließfähige Thermoplaste mit Halogenflammschutz |
| DE102004051241A1 (de) | 2004-10-20 | 2006-05-04 | Basf Ag | Fließfähige Polyamide mit hyperverzweigten Polyestern/Polycarbonaten |
| DE102004054629A1 (de) * | 2004-11-11 | 2006-05-18 | Basf Ag | Basische Desaktivatoren bei der POM-Herstellung |
| DE102005002044A1 (de) | 2005-01-14 | 2006-07-20 | Basf Ag | Fließfähige Polyester mit Hydrolyseschutz |
| DE102005004856A1 (de) | 2005-02-01 | 2006-08-03 | Basf Ag | Fliessfähige Polyester mit Carbodilmid-Stabilisatoren |
| DE102005027549A1 (de) | 2005-06-14 | 2006-12-21 | Basf Ag | Mehrkomponentenformkörper mit Polyesterschichten |
| DE102005034490A1 (de) | 2005-07-20 | 2007-01-25 | Basf Ag | Zusatzstoff-freies Verfahren zur Herstellung von Polyoxymethylenen |
| DE102005062326A1 (de) * | 2005-12-24 | 2007-06-28 | Ticona Gmbh | Verfahren zur Herstellung von Oxymethylen-Polymeren, ausgewählte Polymere und deren Verwendung |
| WO2008012232A1 (de) * | 2006-07-26 | 2008-01-31 | Basf Se | Verfahren zur herstellung von polyoxymethylenen mit bestimmten desaktivatoren |
| US8840976B2 (en) | 2010-10-14 | 2014-09-23 | Ticona Llc | VOC or compressed gas containment device made from a polyoxymethylene polymer |
| EP2505609B1 (de) | 2011-04-01 | 2015-01-21 | Ticona GmbH | Polyoxymethylen mit hoher schlagfestigkeit für extrusionsblasformung |
| EP2546272A1 (de) | 2011-07-15 | 2013-01-16 | Ticona GmbH | Verfahren zur Herstellung von Oxymethylenpolymeren |
| US8968858B2 (en) | 2011-12-30 | 2015-03-03 | Ticona Llc | Printable molded articles made from a polyoxymethylene polymer composition |
| WO2014105670A1 (en) | 2012-12-27 | 2014-07-03 | Ticona Llc | Impact modified polyoxymethylene composition and articles made therefrom that are stable when exposed to ultraviolet light |
| CN104628898A (zh) * | 2013-11-12 | 2015-05-20 | 中国石油化工股份有限公司 | 一种烯烃聚合终止方法 |
| EP3851466A4 (de) * | 2018-09-14 | 2021-11-24 | Asahi Kasei Kabushiki Kaisha | Polyoxymethylen und verfahren zur herstellung davon |
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| EP0028499A1 (de) * | 1979-11-06 | 1981-05-13 | Ube Industries, Ltd. | Verfahren zur Polymerisation von Formaldehyd |
| EP0638357A2 (de) * | 1993-08-13 | 1995-02-15 | Hoechst Aktiengesellschaft | Vorrichtung zur kontinuierlichen Herstellung von Polyacetalen und ihre Verwendung |
| WO2004065444A1 (de) * | 2003-01-23 | 2004-08-05 | Basf Aktiengesellschaft | Verfahren zur herstellung von polyoxymethylenen |
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| JPS59159812A (ja) * | 1983-03-01 | 1984-09-10 | Asahi Chem Ind Co Ltd | トリオキサンの連続重合法 |
| DE3703790A1 (de) | 1987-02-07 | 1988-08-18 | Hoechst Ag | Kontinuierliches verfahren zur entfernung instabiler anteile aus rohem oxymethylencopolymerisat |
| JP3033096B2 (ja) * | 1989-09-21 | 2000-04-17 | 東レ株式会社 | 射出成形用ポリオキシメチレン共重合体の製造方法 |
| DE4327245A1 (de) | 1993-08-13 | 1995-02-16 | Hoechst Ag | Verfahren zur Herstellung von Polyacetalen |
| DE4431575A1 (de) * | 1994-09-05 | 1996-03-07 | Hoechst Ag | Verfahren zur Herstellung von Polyacetalcopolymeren |
| JPH10237145A (ja) * | 1997-02-25 | 1998-09-08 | Polyplastics Co | 安定化ポリアセタール共重合体の製造法 |
| JP4605904B2 (ja) * | 1998-09-24 | 2011-01-05 | 旭化成ケミカルズ株式会社 | ポリオキシメチレンコポリマーおよびその組成物 |
| DE10006037A1 (de) * | 2000-02-10 | 2001-08-16 | Basf Ag | Verfahren zur Herstellung von Polyoxymethylenen |
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2004
- 2004-11-30 DE DE102004057867A patent/DE102004057867A1/de not_active Withdrawn
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2005
- 2005-11-28 US US11/720,414 patent/US7863393B2/en not_active Expired - Fee Related
- 2005-11-28 JP JP2007541858A patent/JP5502280B2/ja not_active Expired - Fee Related
- 2005-11-28 CN CN200580041026XA patent/CN101068840B/zh not_active Expired - Fee Related
- 2005-11-28 WO PCT/EP2005/012673 patent/WO2006058679A1/de not_active Ceased
- 2005-11-28 EP EP05815897A patent/EP1819745A1/de not_active Withdrawn
- 2005-11-28 KR KR1020077014888A patent/KR101246508B1/ko not_active Expired - Fee Related
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| EP0028499A1 (de) * | 1979-11-06 | 1981-05-13 | Ube Industries, Ltd. | Verfahren zur Polymerisation von Formaldehyd |
| EP0638357A2 (de) * | 1993-08-13 | 1995-02-15 | Hoechst Aktiengesellschaft | Vorrichtung zur kontinuierlichen Herstellung von Polyacetalen und ihre Verwendung |
| WO2004065444A1 (de) * | 2003-01-23 | 2004-08-05 | Basf Aktiengesellschaft | Verfahren zur herstellung von polyoxymethylenen |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007036476A1 (de) * | 2005-09-28 | 2007-04-05 | Basf Aktiengesellschaft | Verfahren zur herstellung von polyoxymethylenen in einem rohrreaktor mit dynamischen mischungszonen |
| WO2009127387A1 (de) * | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Polyoxymethylen-formmassen und formkörper und deren verwendung |
| WO2009127388A1 (de) * | 2008-04-16 | 2009-10-22 | Ticona Gmbh | Oxymethylenpolymere, verfahren zu deren herstellung und deren verwendung |
| US8133966B2 (en) | 2008-04-16 | 2012-03-13 | Ticona Gmbh | Oxymethylene copolymers and the use thereof and process for the preparation of oxymethylene copolymers |
| US8188211B2 (en) | 2008-04-16 | 2012-05-29 | Ticona Gmbh | Oxymethylene polymers, process for the preparation thereof and use thereof |
| US8354495B2 (en) | 2008-04-16 | 2013-01-15 | Ticona Gmbh | Process for the preparation of oxymethylene polymers and apparatus suitable for this purpose |
| EP3031858A1 (de) * | 2008-04-16 | 2016-06-15 | Ticona GmbH | Polyoxymethylen-formmassen und formkörper und deren verwendung |
| WO2014191171A1 (en) * | 2013-05-29 | 2014-12-04 | Basf Se | Continuous process for the preparation of polyoxazolines |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101246508B1 (ko) | 2013-03-26 |
| CN101068840B (zh) | 2011-03-30 |
| DE102004057867A1 (de) | 2006-06-01 |
| US7863393B2 (en) | 2011-01-04 |
| CN101068840A (zh) | 2007-11-07 |
| JP2008521950A (ja) | 2008-06-26 |
| EP1819745A1 (de) | 2007-08-22 |
| US20080167439A1 (en) | 2008-07-10 |
| JP5502280B2 (ja) | 2014-05-28 |
| KR20070086796A (ko) | 2007-08-27 |
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