WO2001064621A1 - Verfahren zur herstellung von aminen durch hydroaminomethylierung von olefinen in gegenwart von ionischen flüssigkeiten - Google Patents
Verfahren zur herstellung von aminen durch hydroaminomethylierung von olefinen in gegenwart von ionischen flüssigkeiten Download PDFInfo
- Publication number
- WO2001064621A1 WO2001064621A1 PCT/EP2001/001826 EP0101826W WO0164621A1 WO 2001064621 A1 WO2001064621 A1 WO 2001064621A1 EP 0101826 W EP0101826 W EP 0101826W WO 0164621 A1 WO0164621 A1 WO 0164621A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- olefins
- catalyst
- compounds
- butyl
- mmol
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D295/00—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
- C07D295/02—Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms containing only hydrogen and carbon atoms in addition to the ring hetero elements
- C07D295/023—Preparation; Separation; Stabilisation; Use of additives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/24—Preparation of compounds containing amino groups bound to a carbon skeleton by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds
- C07C209/26—Preparation of compounds containing amino groups bound to a carbon skeleton by reductive alkylation of ammonia, amines or compounds having groups reducible to amino groups, with carbonyl compounds by reduction with hydrogen
Definitions
- the present invention relates to a process for the preparation of amines by catalytic hydroaminomethylation of olefins and new amines.
- Amines and their derivatives are of industrial importance as intermediates for dyes, fine chemicals, pharmaceuticals, agrochemicals and as additives for lubricating oils and diesel fuels.
- Amines can be, for example, by reductive amination of aldehydes, by aminolysis of alcohols, by hydrogenation of
- Hydroaminomethylation is the linking of the hydroformylation of olefins with the reductive amination of the oxoaldehydes formed.
- hydroaminomethylation of olefms primary, secondary or tertiary amines with a carbon skeleton extended by a C j unit can be easily prepared with a wide range of variations.
- olefins are reacted with ammonia or amines in the presence of carbon monoxide, hydrogen and a catalyst. In this way, complex amines or nitrogen heterocycles can be obtained from inexpensive starting materials.
- Suitable methods for recycling and separating the catalyst consist in immobilizing the catalyst on an insoluble, inorganic or organic support or in catalysis in a liquid-liquid two-phase system.
- EP-A-900 779 describes the hydroaminomethylation in the aqueous organic two-phase system.
- a disadvantage of this process is that water-soluble rhodium catalysts have to be used. The manufacture of these catalysts is expensive and time consuming. In addition, the process is less suitable for higher olefins, since the insufficient solubility in water of these compounds means that the mass transfer into the aqueous phase determines the speed.
- the method according to the invention can be carried out in a one-step reaction. It allows the catalyst to be easily separated and, at the same time, reused without further pretreatment.
- the method according to the invention is therefore also suitable for continuous implementation.
- the catalysts which can be used in the process according to the invention are particularly distinguished by their inexpensive and simple preparation.
- the process according to the invention allows the production of amines with high selectivity and high yields.
- olefins having 3 to 20 carbon atoms, very particularly preferably those having 6 to 12 carbon atoms, are preferably reacted.
- Aliphatic olefins with one or more non-conjugated double bonds, cycloaliphatic olefins with up to 3 carbocycles and aromatic vinyl compounds can be used.
- alkenes with a terminal double bond such as ethene, propene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 1-nonen, 1-dodecene, 1-hexadecene, Dienes such as 1,4-hexadiene, ⁇ , ⁇ -dienes such as 1,5-hexadiene and 1,7-octadiene, trienes such as Cyclododeca-l, 5.9-triene, cycloolefins such as cyclopentene, cyclohexene, norbornene,
- the olefins which can be used in the process of the invention can also be mono- or polysubstituted or contain heteroatoms.
- Preferred substituents are, for example, C ⁇ -C4-alkyl, preferably methyl or ethyl, C2-C4 alkenyl, preferably ethenyl, phenyl, benzyl, hydroxy or carboxylate.
- Examples of preferred substituted olefins are ⁇ -methylstyrene, 3,3-dimethylpentadiene, 2,3-dimethylbutadiene, 4-vinylcyclohexene, 3-vinylcyclohexene, l-methylene-2-vinylcyclopentane, pinene and limonene.
- Preferred heteroatoms are oxygen, nitrogen and silicon.
- Examples of preferred heteroatom-containing olefins are 2,5-dihydrofuran, diallyl ether, methylallyl-ethyl ether, N-ethyl
- N-methylallylacetamide N, N-diethylallylamine, N-acetyldiallylamine, triethylvinylsilane, trimethylallylsilane, bis-methylallyl-dimethylsilane.
- Very particularly preferred olefins are 1-octene, 1-dodecene, 1,7-octadiene, cyclohexene, styrene and ⁇ -methylstyrene. Mixtures of olefms can also be used.
- ammonia is used in the process according to the invention, it can be added to the reaction as a gas or in the form of an aqueous solution.
- the aqueous solution preferably contains 5 to 35% by weight of ammonia at room temperature and normal pressure.
- olefins are preferably reacted with compounds which have at least one primary or secondary amino group.
- the compounds used in the process according to the invention with at least one primary or secondary amino group can be substituted one or more times and / or contain heteroatoms.
- Preferred substituents are -CC 4 -Al yl, C ⁇ Cg-cycloalkyl, benzyl, hydroxy, carboxy, alkyloxycarbonyl.
- Preferred heteroatoms are oxygen and nitrogen. Examples of preferred compounds which have at least one primary or secondary amino group are dimethylamine, diethylamine, dipropylamine, dibutylamine, N-butylamine, tert.-
- Particularly preferred compounds which have at least one primary or secondary ammo group are morpholine, cyclohexylamine and
- the compounds which have at least one primary or secondary amino group are preferably present in an amount of 0.5 to 20 equivalents, preferably 0.8 to 15 equivalents, particularly preferably 1 to 5 equivalents, based on the olefin used.
- the ratio of carbon monoxide and hydrogen can vary within wide limits.
- Carbon monoxide and hydrogen can be added at a pressure of 2 to 30 MPa, preferably 5 to 15 MPa.
- metals from group VIII of the periodic table of the elements are used as catalysts in elemental or bound form.
- Catalysts which are soluble or readily suspendable in the ionic liquid e.g. soluble compounds of the metals from group VIII of the Periodic Table of the Elements or these metals in finely divided (colloidal) elemental form.
- Elements are rhodium and iridium.
- Preferred catalysts are rhodium and iridium compounds. Particularly preferred rhodium catalysts are RI1CI3, [RhCl (CO) 2 ] 2 , [Rh (COD) Cl] 2 , Rh 6 (CO) 16 , Rh 4 (CO) 12 , HRh (CO) (PPh 3 ) 3 , Rh ( acac) 3, Rh (acac) (CO) 2 and elemental rhodium.
- a very particularly preferred rhodium catalyst is Rh (acac) (CO) 2 .
- a preferred one is Rh (acac) (CO) 2 .
- Iridium catalyst is [Ir (COD) Cl] 2 .
- the catalyst preferably contains both rhodium and iridium in elemental or bound form, the molar ratio of rhodium to iridium between 2: 1 and 1: 200, in particular between 1: 1 and 1 : 100 lies.
- the catalyst can be used in an amount of 0.01 mol% to 5 mol%, preferably 0.05 mol% to 1 mol%, particularly preferably 0.1 mol% to 0.8 mol% , based on the olefin used.
- the ionic liquids used in the process according to the invention are liquid salts of the formula Q + A-, which are preferably liquid at temperatures below 100 ° C., in particular at temperatures below 80 ° C. and particularly preferably at temperatures below 50 ° C. Form salts.
- Q + A ⁇ preferably represents a quaternary ammonium and / or phosphonium ion.
- Q + is particularly preferably a compound from the series
- R 1 to R 4 independently of one another are hydrogen - where R 1 to R 4 are not simultaneously hydrogen -, saturated or unsaturated C j -C ⁇ alkyl, C -Cg-
- Cycloalkyl, Cg- o-aryl or C 7 -C 1 i-aralkyl mean.
- Q + is particularly preferably an ammonium and / or phosphonium ion which is derived from a nitrogen and / or phosphorus-containing heterocycle which has 1, 2 or 3 nitrogen and / or phosphorus atoms and corresponds to the following general formulas
- R 5 represents a Ci-C ⁇ -Al ylene or phenylene radical.
- R 1 to R 4 are methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, amyl, methylene, ethylidene, phenyl or benzyl, preferred examples of R 5 are methylene, ethylene, propylene or phenylene.
- Q + stands for N-butylpyridinium, N-ethylpyridinium, N-methylpyridinium, 3-butyl-1-methylimidazolium, diethylpyrazolium, 3-ethyl-1-methylimidazolium, pyridinium, tetramethylphenylamrnonium and tetrabutylphosphonium.
- Q + stands for 3-butyl-1-methylimidazolium.
- a "A” preferably represents hexafluorophosphate
- Very particularly preferred compounds Q + A are 3-butyl-1-methylimidazolium tetrafluoroborate and 3-butyl-1-methylimidazolium hexafluorophosphate.
- Mixtures of different ionic liquids can also be used in the process according to the invention.
- the ionic liquid is preferably used in a molar ratio of 10: 1 to 1: 1, based on the olefin.
- the process according to the invention can be carried out at temperatures between 50 ° C. and 180 ° C., preferably between 80 ° C. and 150 ° C., in particular between 100 ° C. and 130 ° C. be carried out, it must be ensured that the ionic liquids used are liquid at this temperature.
- Pressure reactors with magnetic or mechanical stirring or mixing devices are preferably used as reaction vessels. Thorough mixing of the phases present is advantageous during the reaction. This can be brought about in particular by intensive stirring and / or pumping around.
- the process according to the invention can be carried out in bulk or in a solvent.
- solvents are used. These solvents are preferably inert solvents which are immiscible or only slightly miscible with water. Examples of such solvents are toluene, benzene, xylenes, diethyl ether, methyl tert-butyl ether and alkanes such as
- Hexane, pentane and octane are preferably Hexane, pentane and octane.
- a particularly preferred solvent is toluene.
- the reaction is carried out, for example, in such a way that the aqueous ammonia solution together with the olefin in a mixture of ionic liquid and optionally in
- a solvent preferably toluene
- the catalyst can then be added. If you work in a pressure vessel, it can be flushed with an inert gas and then filled with carbon monoxide and hydrogen.
- the reaction time is generally 1 to 50 hours, preferably 3 to 20 hours.
- the further reaction is carried out in such a way that this compound with the olefin in a mixture of ionic liquid and optionally in the presence of a solvent, preferably toluene is submitted.
- a solvent preferably toluene
- the pressure reactor can be cooled, freed of carbon monoxide and hydrogen by depressurization, and the reaction mixture can be removed.
- the phases separate on their own when the mixing device is switched off.
- the organic phase contains the reaction product and can be worked up by distillation or column chromatography.
- the invention further relates to the new amines N-cyclohexyl-N-nonylamine, N-cyclohexyl-N-2-methyloctylamine and N-benzyl-N-2-methyloctylamine.
- Olefin and amine submitted to a mixture of ionic liquid and toluene. A defined amount of the catalyst was added and the pressure vessel was then closed. The pressure vessel was flushed with argon and then filled with hydrogen and carbon monoxide. After the reaction was complete, the pressure vessel was cooled, let down and flushed with argon. The
- the reaction mixture was transferred to a separatory funnel and the phases were separated.
- the organic phase was filtered through a short Al 2 O 3 column (2 cm diameter, 3 cm length) with a cyclohexane / MTBE mixture (5/1) as the eluent.
- the solvents were then removed on a rotary evaporator.
- the isomers were separated on Al 2 ⁇ 3 using PE / MTBE mixtures as the mobile phase.
- PE petroleum ether 30-60
- MTBE methyl tert-butyl ether
- acac acetylacetonate
- NEt 3 triethylamine
- the phase which contained the ionic liquid and the catalyst, was used for further reactions without working up.
- Turn-over-number 1256
- Turn-over-frequency 157 h _1
- IR (film, NaCl): v [cm “1 ] 3304 (vw, br), 2954 (s), 2925 (s), 2854 (s), 1464 (m), 1450 (m), 1377 (w) , 1369 (w), 1347 (w), 1304 (w), 1259 (w), 1132 (w).
- IR (film, NaCl): v [cm “1 ] 3304 (vw, br), 2954 (s), 2925 (s), 2854 (s), 1464 (m), 1450 (m), 1377 (w) , 1369 (w), 1347 (w), 1304 (w), 1259 (w), 1132 (w).
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01915278A EP1265844A1 (de) | 2000-03-02 | 2001-02-19 | Verfahren zur herstellung von aminen durch hydroaminomethylierung von olefinen in gegenwart von ionischen flüssigkeiten |
AU42423/01A AU4242301A (en) | 2000-03-02 | 2001-02-19 | Method for producing amines by the hydroaminomethylation of olefins in the presence of ionic liquids |
JP2001563465A JP2003525264A (ja) | 2000-03-02 | 2001-02-19 | イオン液体の存在下でのオレフィンのヒドロアミノメチル化によってアミンを製造する方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2000110046 DE10010046A1 (de) | 2000-03-02 | 2000-03-02 | Verfahren zur Herstellung von Aminen und neue Amine |
DE10010046.5 | 2000-03-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001064621A1 true WO2001064621A1 (de) | 2001-09-07 |
Family
ID=7633158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/001826 WO2001064621A1 (de) | 2000-03-02 | 2001-02-19 | Verfahren zur herstellung von aminen durch hydroaminomethylierung von olefinen in gegenwart von ionischen flüssigkeiten |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1265844A1 (de) |
JP (1) | JP2003525264A (de) |
AU (1) | AU4242301A (de) |
DE (1) | DE10010046A1 (de) |
WO (1) | WO2001064621A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7220884B2 (en) * | 2004-02-10 | 2007-05-22 | Dow Global Technologies, Inc. | Hydroaminomethylation of olefins |
CN100457268C (zh) * | 2006-09-08 | 2009-02-04 | 浙江大学 | 离子液体支载的乙酰丙酮金属的催化剂及制备方法 |
WO2023115292A1 (en) * | 2021-12-21 | 2023-06-29 | Rhodia Operations | Process for preparing tertiary amines |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103073372B (zh) * | 2011-10-25 | 2016-03-02 | 中国科学院兰州化学物理研究所 | 功能化离子液体催化合成胺类化合物的方法 |
KR101787436B1 (ko) * | 2016-04-19 | 2017-10-18 | 명지대학교 산학협력단 | 실리카에 담지된 이온성 액체 촉매의 제조방법 및 이를 이용한 아민 유도체 합성방법 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000026A1 (de) * | 1977-06-06 | 1978-12-20 | BASF Aktiengesellschaft | Verfahren zur Herstellung von sekundären Aminen |
EP0145191A2 (de) * | 1983-11-10 | 1985-06-19 | Texaco Development Corporation | Verfahren zur selektiven Herstellung von sekundären oder tertiären Aminen |
US5874638A (en) * | 1995-11-30 | 1999-02-23 | Institut Francais Du Petrole | Process for hydroformylation of olefinic compounds |
EP0900779A2 (de) * | 1997-08-26 | 1999-03-10 | Hoechst Research & Technology Deutschland GmbH & Co. KG | Einstufiges Verfahren zur Herstellung von Aminen |
-
2000
- 2000-03-02 DE DE2000110046 patent/DE10010046A1/de not_active Withdrawn
-
2001
- 2001-02-19 EP EP01915278A patent/EP1265844A1/de not_active Withdrawn
- 2001-02-19 JP JP2001563465A patent/JP2003525264A/ja active Pending
- 2001-02-19 WO PCT/EP2001/001826 patent/WO2001064621A1/de not_active Application Discontinuation
- 2001-02-19 AU AU42423/01A patent/AU4242301A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0000026A1 (de) * | 1977-06-06 | 1978-12-20 | BASF Aktiengesellschaft | Verfahren zur Herstellung von sekundären Aminen |
EP0145191A2 (de) * | 1983-11-10 | 1985-06-19 | Texaco Development Corporation | Verfahren zur selektiven Herstellung von sekundären oder tertiären Aminen |
US5874638A (en) * | 1995-11-30 | 1999-02-23 | Institut Francais Du Petrole | Process for hydroformylation of olefinic compounds |
EP0900779A2 (de) * | 1997-08-26 | 1999-03-10 | Hoechst Research & Technology Deutschland GmbH & Co. KG | Einstufiges Verfahren zur Herstellung von Aminen |
Non-Patent Citations (4)
Title |
---|
BORROWS ET AL., J. CHEM. SOC., 1947, pages 197, 201 * |
DATABASE CROSSFIRE Beilsteininformationssysteme GmbH; XP002170307 * |
OLIVIER H ET AL: "NONAQUEOUS ROOM-TEMPERATURE IONIC LIQUIDS: A NEW CLASS OF SOLVENTS FOR CATALYTIC ORGANIC REACTIONS", CHEMICAL INDUSTRIES,NEW YORK, NY,US, vol. 68, 1996, pages 249 - 263, XP000938205, ISSN: 0737-8025 * |
T WELTON: "Room-temperature ionic liquids. Solvents for synthesis and catalysis", CHEMICAL REVIEWS,AMERICAN CHEMICAL SOCIETY. EASTON,US, vol. 99, 1999, pages 2071 - 2083, XP002162959, ISSN: 0009-2665 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7220884B2 (en) * | 2004-02-10 | 2007-05-22 | Dow Global Technologies, Inc. | Hydroaminomethylation of olefins |
CN100457268C (zh) * | 2006-09-08 | 2009-02-04 | 浙江大学 | 离子液体支载的乙酰丙酮金属的催化剂及制备方法 |
WO2023115292A1 (en) * | 2021-12-21 | 2023-06-29 | Rhodia Operations | Process for preparing tertiary amines |
Also Published As
Publication number | Publication date |
---|---|
EP1265844A1 (de) | 2002-12-18 |
JP2003525264A (ja) | 2003-08-26 |
AU4242301A (en) | 2001-09-12 |
DE10010046A1 (de) | 2001-09-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2703802C3 (de) | Verfahren zur kontinuierlichen Herstellung von organischen Phosphinen | |
EP1515936A1 (de) | Verfahren zur telomerisation von nicht cyclischen olefinen | |
DE10357718A1 (de) | Verfahren zur Herstellung von Tricyclodecandialdehyd | |
DE3886596T2 (de) | Phosphoniumsalze und Verfahren zu ihrer Herstellung und Verwendung. | |
DE1807088A1 (de) | Verfahren zum Anlagern von Cyanwasserstoff an Olefine | |
WO2001064621A1 (de) | Verfahren zur herstellung von aminen durch hydroaminomethylierung von olefinen in gegenwart von ionischen flüssigkeiten | |
EP0005856B1 (de) | Verfahren zur Herstellung von Diaminen | |
DE10243446B4 (de) | Verfahren zur Herstellung von Aldehyden | |
DE3014455C2 (de) | Verfahren zur Herstellung eines tertiären Amins | |
DE4344064C1 (de) | Verfahren zur Herstellung von in alpha-Stellung durch einen Alkylrest substituierten Aldehyden | |
US3466317A (en) | Cyano acetals | |
DE3106108A1 (de) | Verfahren zur herstellung sekundaerer amine | |
EP2838872B1 (de) | Verfahren zur herstellung von verzweigten alkoholen | |
EP1235775A1 (de) | Verfahren zur isomerisierung von allylalkoholen | |
DE10148712A1 (de) | Diphosphin | |
DE19838666B4 (de) | Heterogenes Verfahren zur Herstellung von Enaminen, Iminen, Indolen und Diaminen aus Alkinen und Weiterverarbeitung der erhaltenen Produkte durch katalytische Hydrierung | |
DE19722373A1 (de) | Verwendung eines Rhodiumkatalysators sowie ein neues Verfahren zur Herstellung von 2-arylsubstituierten Ethylen- und Ethylaminen | |
DE19737053A1 (de) | Einstufiges Verfahren zur Herstellung von Aminen | |
DE69123682T2 (de) | Verfahren zur Herstellung von mehrfach ungesättigten Olefinen | |
DE68927132T2 (de) | Verfahren zur Herstellung von Lactonen | |
DE1810185B2 (de) | Nickel (0)-katalysatoren, Verfahren zu deren Herstellung und deren Verwendung zur Oligomerisation von Butadien | |
US3658904A (en) | Extraction process using cyano acetal solvents | |
DE1768213A1 (de) | Verfahren zur katalytischen Cyclo-Dimerisation von 1,3-Diolefinen | |
EP1102740A1 (de) | Verfahren zur herstellung von sorbinsäure und sorbinsäureestern oder deren derivaten | |
DE10035120A1 (de) | Verfahren zur Hydroformylierung von Olefinen in einem zweistufigen Reaktionssystem |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CN CR CU CZ DE DK DM DZ EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG US UZ VN YU ZA ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): GH GM KE LS MW MZ SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE TR BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2001915278 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref country code: JP Ref document number: 2001 563465 Kind code of ref document: A Format of ref document f/p: F |
|
WWP | Wipo information: published in national office |
Ref document number: 2001915278 Country of ref document: EP |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2001915278 Country of ref document: EP |