WO1998055450A1 - Method for the preparation of carbamates - Google Patents
Method for the preparation of carbamates Download PDFInfo
- Publication number
- WO1998055450A1 WO1998055450A1 PCT/EP1998/002888 EP9802888W WO9855450A1 WO 1998055450 A1 WO1998055450 A1 WO 1998055450A1 EP 9802888 W EP9802888 W EP 9802888W WO 9855450 A1 WO9855450 A1 WO 9855450A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- catalyst
- reaction
- zinc
- carbamates
- carbonate
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C269/00—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups
- C07C269/04—Preparation of derivatives of carbamic acid, i.e. compounds containing any of the groups, the nitrogen atom not being part of nitro or nitroso groups from amines with formation of carbamate groups
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/02—Boron or aluminium; Oxides or hydroxides thereof
- B01J21/04—Alumina
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/063—Titanium; Oxides or hydroxides thereof
-
- 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
- B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
- B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- B01J21/08—Silica
Definitions
- the present invention relates to a method for the preparation of carbamates by reaction of aromatic amines with organic carbonates using a catalyst on an inert support.
- US-A 5.347.034 discloses a process for producing poly(o-alkylurethanes) of the diphenylmethane series by reacting the corresponding amines with dialkyl carbonates in the presence of a catalyst, such that the formed poly(O-alkylurethanes) crystallize out in a highly pure form upon cooling.
- EP-A 391.473 describes a process for producing carbamates using reduced amounts of catalyst by first reacting an amine with a (cyclo)alkyl carbonate in the presence of a carbamation catalyst to produce a mixture of a carbamate and an urea, further reacting the urea with carbonate to produce the corresponding carbamate, and finally recovering the carbamate from the reaction mixture.
- EP-A 48.371 describes the preparation of N,O-disubstituted urethanes by reacting primary amines with dialkylcarbonates in the presence of neutral or basic inorganic or organic lead, titanium, zinc or zirconium compounds.
- JP-A 07.328.435 a catalyst comprising an oxide composition containing Zr and Si is used for the production of carbamates from a diester carbonate and an aliphatic amine in the liquid phase.
- the invention thus concerns a method for the preparation of carbamates by reaction of aromatic amines with organic carbonates in the presence of a metal based catalyst on an inert carrier support.
- the invention relates to a catalyst comprising an organic metal salt on an inert carrier support.
- Such catalysts show an improved processability in the conversion of aromatic amines to carbamates via reaction with an organic carbonate.
- Aromatic amine compounds which can be used in the present method include mono-, di- or polyamines.
- Suitable amines according to the process of the invention include, for example, phenylamine, 4-chlorophenylamine, 2-fluorophenyl amine,
- polyaminopolyphenylmethanes 2,4-toluenediamine, 2,6-toluenediamine, m-phenyienediamine, 1 ,5-naphthylenediamine, and mixtures thereof.
- aromatic di- or polyamines like toluenediamines, i5 diaminodiphenylmethanes or polyaminopolyphenylmethanes or any mixtures thereof.
- Suitable organic carbonates include cyclic or alicyclic carbonates such as, for example, ethylene carbonate, propylene carbonate, styrene carbonate, diphenyl 20 carbonate, methyl phenyl carbonate.dimethyl carbonate, diethyl carbonate, dipropyl carbonate, dibutyl carbonate, dihexyl carbonate, methyl ethyl carbonate, methyl butyl carbonate and the like.
- Organic or inorganic salts which may used include, for example, acetates, 25 chlorides, nitrates, sulfonates, propionates, isopropanoates, butanoates, 2-ethylhexanoates, n-octoates, isononanoates, benzoates, chlorobenzoates, naphthenates, stearates, itaconates, pivalates, phenolates, acetylacetonates, alkoxides, C 16 /C 18 -alkenylsuccinoates (ASA), C 12 -alkenylsuccinoates (DSA) and the like.
- ASA alkoxides
- alkanoates having from 1 to 15 carbons atoms.
- Suitable catalysts include, for example, zinc catalysts such as zinc chloride, zinc acetate, zinc propionate, zinc octoate, zinc benzoate, zinc p-chlorobenzoate, zinc naphthenate, zinc stearate, zinc itaconate, zinc pivalate, zinc phenolate, 35 zinc acetylacetonate, zinc methoxide, lead catalysts like lead acetate and lead octoate, and tin catalysts like stannous chloride, stannous octoate, and mixtures thereof.
- the metal in the catalyst is selected from the group consisting of Ti, Zr, Zn, Sn and Pb.
- the heterogeneous metal based catalyst on the carrier may be made by impregnating the catalyst with or precipitating it on the carrier.
- Suitable inert carrier supports include, for example, metal oxides such as alumina, silica, Ti0 2 , MgO and the like, clays, zeolites, polymer supports, resins, graphite and carbon.
- a preferred carrier comprises TiO 2 , alumina or silica.
- the supported catalyst is generally used in amounts between 10 "3 and 20 mole% 5 based on the amount of amines used.
- the polyamines and the organic carbonates may be reacted in stoichiometric quantities.
- reaction conditions largely depend on the type of reactants used.
- the method may be carried out at atmospheric or superatmospheric pressures.
- the pressure is preferably not more than 20 bar.
- reaction time is dependent on the temperature and on the type and quantity of the carbamate compound, but will normally be between 0.5 and 6 hours. Reaction times of less than 3 hours are common, and reaction times of less than 152.5 hours have been achieved without any problem.
- reaction temperature will be between 50 and 300°C.
- method of the invention is carried out at temperatures between 100 and 250°C.
- Any solvent or mixture of solvents which is inert to the reactants under the reaction conditions may be employed.
- Suitable solvents which may be employed include, for example, aromatic hydrocarbons such as benzene, halogenated aromatic hydrocarbons such as
- 1-chloronaphthalene alkylated aromatic hydrocarbons like toluene, xylene, ethylbenzene, cumene or tetrahydronaphthalene, other functionalised aromatic hydrocarbons such as anisole, diphenylether, ethoxybenzene, benzonitrile, 2-fluoroanisole, 2,3-dimethylanisole or trifluorotoluene, alkanes such as
- n-pentane n-hexane, n-heptane or higher or branched alkanes
- cyclic alkanes like cyclopentane, cyclohexane or derivatives thereof
- halogenated alkanes like chloroform, dichloromethane, carbontetrachloride, and alkanes with other functional groups like diethylether, acetonitrile, dioxane or mixtures thereof, and the like.
- Inert aromatic solvents are preferred.
- the method can be conducted in any apparatus which can be equipped, if required, with agitation means and heating and/or cooling means to keep the temperature within the desired range.
- the method of the present invention may be conducted batchwise or as a semi-continuous or continuous process.
- One type of continuous operation is in a fluidized bed reactor in which a catalyst is carried into the reactor as a slurry in one or more of the reactants. Still another way of operating continuously is in a moving bed reactor in which the catalyst bed and the reactants pass concurrently or countercurrently to each other.
- a preferred type of continuous operation however is in a fixed bed reactor in which the reactants are passed over the catalyst bed.
- reaction alcohols are formed as by-product. These can be removed from the reaction mixture either continuously during or after completion of the reaction by e.g. distillation.
- the present invention is illustrated by, but not limited to, the following examples.
- AI 2 O 3 supported zinc octoate (20 wt% zinc salt of 2-ethyl hexanoic acid supported on AI 2 O 3 ). The mixture was purged with nitrogen. The reaction mixture was then heated at 180°C for 2 hours.
- AI 2 O 3 supported zinc octoate (20 wt% zinc salt of 2-ethyl hexanoic acid supported on AI 2 O 3 ). The mixture was purged with nitrogen. The reaction mixture was then heated at 180°C for 2 hours.
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98928279A EP0988281A1 (en) | 1997-06-05 | 1998-05-15 | Method for the preparation of carbamates |
CA002289658A CA2289658A1 (en) | 1997-06-05 | 1998-05-15 | Method for the preparation of carbamates |
AU80182/98A AU8018298A (en) | 1997-06-05 | 1998-05-15 | Method for the preparation of carbamates |
JP50138299A JP2002512626A (en) | 1997-06-05 | 1998-05-15 | Method for producing carbamates |
KR19997011408A KR20010013407A (en) | 1997-06-05 | 1998-05-15 | Method for the preparation of carbamates |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97109081 | 1997-06-05 | ||
EP97109081.6 | 1997-06-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998055450A1 true WO1998055450A1 (en) | 1998-12-10 |
Family
ID=8226879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/002888 WO1998055450A1 (en) | 1997-06-05 | 1998-05-15 | Method for the preparation of carbamates |
Country Status (9)
Country | Link |
---|---|
EP (1) | EP0988281A1 (en) |
JP (1) | JP2002512626A (en) |
KR (1) | KR20010013407A (en) |
CN (1) | CN1258274A (en) |
AU (1) | AU8018298A (en) |
CA (1) | CA2289658A1 (en) |
HU (1) | HUP0003114A3 (en) |
WO (1) | WO1998055450A1 (en) |
ZA (1) | ZA984538B (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6214806B1 (en) | 1997-02-28 | 2001-04-10 | University Of Iowa Research Foundation | Use of nucleic acids containing unmethylated CPC dinucleotide in the treatment of LPS-associated disorders |
US7022871B2 (en) * | 1999-12-27 | 2006-04-04 | Huntsman International Llc | Process for the synthesis of polycarbamates |
WO2007015852A2 (en) * | 2005-07-20 | 2007-02-08 | Dow Global Technologies Inc. | Heterogeneous supported catalytic carbamate process |
EP2036884A1 (en) | 2007-09-14 | 2009-03-18 | Repsol Ypf S.A. | Process for producing fluorinated isocyanates and carbamates |
WO2010000888A1 (en) | 2008-07-04 | 2010-01-07 | Consejo Superior De Investigaciones Científicas | Preparation of carbamates with solid catalysts |
EP2199278A1 (en) * | 2008-12-19 | 2010-06-23 | Dow Global Technologies Inc. | Process for the Production of Aromatic Urethanes |
WO2011048124A1 (en) | 2009-10-21 | 2011-04-28 | Basf Se | Method for producing urethanes |
US8058469B2 (en) | 2008-11-03 | 2011-11-15 | Sabic Innovative Plastics Ip B.V. | Method for making carbamates, ureas and isocyanates |
US8835418B2 (en) | 2010-06-04 | 2014-09-16 | Sanofi | Hexafluoroisopropyl carbamate derivatives, their preparation and their therapeutic application |
WO2018210711A1 (en) | 2017-05-15 | 2018-11-22 | Covestro Deutschland Ag | Silica-based zinc catalysts. their preparation and use in the alkoxycarbonylation of amines |
WO2018216036A1 (en) * | 2017-05-26 | 2018-11-29 | Council Of Scientific And Industrial Research | A process for the synthesis of aromatic carbamates |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100358977C (en) * | 2005-09-08 | 2008-01-02 | 中国石油大学(华东) | Method for preparing catalyst |
JP4778844B2 (en) * | 2006-06-20 | 2011-09-21 | 三井化学株式会社 | Method for producing silicon-containing isocyanate compound |
CN100566834C (en) * | 2008-05-19 | 2009-12-09 | 中国科学院山西煤炭化学研究所 | Be used for catalyst and the method for making and the application of synthesizing fragrant carbamic acid ester |
JP5847526B2 (en) * | 2010-10-13 | 2016-01-27 | 日本合成化学工業株式会社 | Method for producing urethane compound |
CN103012210B (en) * | 2012-12-13 | 2014-09-17 | 黄河三角洲京博化工研究院有限公司 | Preparation method of isophorone diamidoformate |
KR102016527B1 (en) * | 2013-06-20 | 2019-09-02 | 한국생산기술연구원 | Process for preparing aliphatic hydroxyalkyl carbamates from aromatic amines |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2525506A1 (en) * | 1975-06-07 | 1976-12-23 | Basf Ag | PROCESS FOR MANUFACTURING A CONTACT MASS CONTAINING ZINC AND NICKEL OR COBALT |
FR2374952A1 (en) * | 1976-12-22 | 1978-07-21 | Stauffer Chemical Co | PROCESS AND CATALYST FOR PRODUCING PERCHLOROMETHYLMERCAPTAN |
US4268683A (en) * | 1980-02-21 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
US4268684A (en) * | 1980-02-25 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
JPH07328435A (en) * | 1994-06-15 | 1995-12-19 | Nippon Shokubai Co Ltd | Catalyst for production of carbamate and production of carbamate using that catalyst |
-
1998
- 1998-05-15 WO PCT/EP1998/002888 patent/WO1998055450A1/en not_active Application Discontinuation
- 1998-05-15 HU HU0003114A patent/HUP0003114A3/en unknown
- 1998-05-15 CA CA002289658A patent/CA2289658A1/en not_active Abandoned
- 1998-05-15 CN CN98805602A patent/CN1258274A/en active Pending
- 1998-05-15 KR KR19997011408A patent/KR20010013407A/en not_active Application Discontinuation
- 1998-05-15 EP EP98928279A patent/EP0988281A1/en not_active Withdrawn
- 1998-05-15 JP JP50138299A patent/JP2002512626A/en active Pending
- 1998-05-15 AU AU80182/98A patent/AU8018298A/en not_active Abandoned
- 1998-05-27 ZA ZA984538A patent/ZA984538B/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2525506A1 (en) * | 1975-06-07 | 1976-12-23 | Basf Ag | PROCESS FOR MANUFACTURING A CONTACT MASS CONTAINING ZINC AND NICKEL OR COBALT |
FR2374952A1 (en) * | 1976-12-22 | 1978-07-21 | Stauffer Chemical Co | PROCESS AND CATALYST FOR PRODUCING PERCHLOROMETHYLMERCAPTAN |
US4268683A (en) * | 1980-02-21 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
US4268684A (en) * | 1980-02-25 | 1981-05-19 | The Dow Chemical Company | Preparation of carbamates from aromatic amines and organic carbonates |
JPH07328435A (en) * | 1994-06-15 | 1995-12-19 | Nippon Shokubai Co Ltd | Catalyst for production of carbamate and production of carbamate using that catalyst |
Non-Patent Citations (1)
Title |
---|
DATABASE WPI Section Ch Week 9608, Derwent World Patents Index; Class A41, AN 96-072986, XP002051909 * |
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6214806B1 (en) | 1997-02-28 | 2001-04-10 | University Of Iowa Research Foundation | Use of nucleic acids containing unmethylated CPC dinucleotide in the treatment of LPS-associated disorders |
US7022871B2 (en) * | 1999-12-27 | 2006-04-04 | Huntsman International Llc | Process for the synthesis of polycarbamates |
WO2007015852A2 (en) * | 2005-07-20 | 2007-02-08 | Dow Global Technologies Inc. | Heterogeneous supported catalytic carbamate process |
WO2007015852A3 (en) * | 2005-07-20 | 2007-05-24 | Dow Global Technologies Inc | Heterogeneous supported catalytic carbamate process |
EP2036884A1 (en) | 2007-09-14 | 2009-03-18 | Repsol Ypf S.A. | Process for producing fluorinated isocyanates and carbamates |
EP2316822A1 (en) * | 2008-07-04 | 2011-05-04 | Consejo Superior De Investigaciones Científicas | Preparation of carbamates with solid catalysts |
WO2010000888A1 (en) | 2008-07-04 | 2010-01-07 | Consejo Superior De Investigaciones Científicas | Preparation of carbamates with solid catalysts |
US8735621B2 (en) | 2008-07-04 | 2014-05-27 | Consejo Superior De Investigaciones Cientificas | Preparation of carbamates with solid catalysts |
EP2316822A4 (en) * | 2008-07-04 | 2013-10-23 | Consejo Superior Investigacion | Preparation of carbamates with solid catalysts |
US8058469B2 (en) | 2008-11-03 | 2011-11-15 | Sabic Innovative Plastics Ip B.V. | Method for making carbamates, ureas and isocyanates |
WO2010070039A1 (en) * | 2008-12-19 | 2010-06-24 | Dow Global Technologies Inc. | Process for the production of aromatic urethanes |
EP2199278A1 (en) * | 2008-12-19 | 2010-06-23 | Dow Global Technologies Inc. | Process for the Production of Aromatic Urethanes |
WO2011048124A1 (en) | 2009-10-21 | 2011-04-28 | Basf Se | Method for producing urethanes |
JP2013508336A (en) * | 2009-10-21 | 2013-03-07 | ビーエーエスエフ ソシエタス・ヨーロピア | Urethane production method |
US8871965B2 (en) | 2009-10-21 | 2014-10-28 | Basf Se | Method for producing urethanes |
US8835418B2 (en) | 2010-06-04 | 2014-09-16 | Sanofi | Hexafluoroisopropyl carbamate derivatives, their preparation and their therapeutic application |
WO2018210711A1 (en) | 2017-05-15 | 2018-11-22 | Covestro Deutschland Ag | Silica-based zinc catalysts. their preparation and use in the alkoxycarbonylation of amines |
CN110650944A (en) * | 2017-05-15 | 2020-01-03 | 科思创德国股份有限公司 | Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines |
US10807084B2 (en) | 2017-05-15 | 2020-10-20 | Covestro Deutschland Ag | Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines |
CN110650944B (en) * | 2017-05-15 | 2022-07-19 | 科思创德国股份有限公司 | Silica-based zinc catalysts, their preparation and use in the alkoxycarbonylation of amines |
WO2018216036A1 (en) * | 2017-05-26 | 2018-11-29 | Council Of Scientific And Industrial Research | A process for the synthesis of aromatic carbamates |
US10703714B2 (en) | 2017-05-26 | 2020-07-07 | Council Of Scientific And Industrial Research | Process for the synthesis of aromatic carbamates |
EP3630717B1 (en) * | 2017-05-26 | 2022-02-09 | Council of Scientific and Industrial Research | A process for the synthesis of aromatic carbamates |
Also Published As
Publication number | Publication date |
---|---|
HUP0003114A2 (en) | 2001-02-28 |
HUP0003114A3 (en) | 2001-03-28 |
KR20010013407A (en) | 2001-02-26 |
CA2289658A1 (en) | 1998-12-10 |
AU8018298A (en) | 1998-12-21 |
ZA984538B (en) | 1998-12-07 |
CN1258274A (en) | 2000-06-28 |
JP2002512626A (en) | 2002-04-23 |
EP0988281A1 (en) | 2000-03-29 |
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