ATE213662T1 - Herstellung eines silberkatalysators - Google Patents
Herstellung eines silberkatalysatorsInfo
- Publication number
- ATE213662T1 ATE213662T1 AT95943625T AT95943625T ATE213662T1 AT E213662 T1 ATE213662 T1 AT E213662T1 AT 95943625 T AT95943625 T AT 95943625T AT 95943625 T AT95943625 T AT 95943625T AT E213662 T1 ATE213662 T1 AT E213662T1
- Authority
- AT
- Austria
- Prior art keywords
- production
- silver catalyst
- silver
- catalyst
- support
- Prior art date
Links
Classifications
-
- 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/48—Silver or gold
- B01J23/50—Silver
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0203—Impregnation the impregnation liquid containing organic 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/38—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals
- B01J23/54—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/66—Silver or gold
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/082—Decomposition and pyrolysis
- B01J37/086—Decomposition of an organometallic compound, a metal complex or a metal salt of a carboxylic acid
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D301/00—Preparation of oxiranes
- C07D301/02—Synthesis of the oxirane ring
- C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
- C07D301/04—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen
- C07D301/08—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase
- C07D301/10—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with air or molecular oxygen in the gaseous phase with catalysts containing silver or gold
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Epoxy Compounds (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/348,340 US5504052A (en) | 1994-12-02 | 1994-12-02 | Silver catalyst preparation |
| PCT/US1995/015568 WO1996016734A1 (en) | 1994-12-02 | 1995-11-29 | Silver catalyst preparation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ATE213662T1 true ATE213662T1 (de) | 2002-03-15 |
Family
ID=23367578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT95943625T ATE213662T1 (de) | 1994-12-02 | 1995-11-29 | Herstellung eines silberkatalysators |
Country Status (13)
| Country | Link |
|---|---|
| US (2) | US5504052A (enExample) |
| EP (1) | EP0794833B1 (enExample) |
| JP (1) | JP4023555B2 (enExample) |
| KR (1) | KR100374692B1 (enExample) |
| CN (1) | CN1094387C (enExample) |
| AT (1) | ATE213662T1 (enExample) |
| AU (1) | AU691392B2 (enExample) |
| BR (1) | BR9509942A (enExample) |
| CA (1) | CA2206495C (enExample) |
| DE (1) | DE69525648T2 (enExample) |
| IN (1) | IN192066B (enExample) |
| MX (1) | MX198169B (enExample) |
| WO (1) | WO1996016734A1 (enExample) |
Families Citing this family (61)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6042797A (en) | 1997-07-02 | 2000-03-28 | Tosoh Corporation | Adsorbent for ethylene, method for adsorbing and removing ethylene and method for purifying an exhaust gas |
| US6248684B1 (en) | 1992-11-19 | 2001-06-19 | Englehard Corporation | Zeolite-containing oxidation catalyst and method of use |
| US5504052A (en) * | 1994-12-02 | 1996-04-02 | Scientific Design Company, Inc. | Silver catalyst preparation |
| US5698719A (en) * | 1996-09-12 | 1997-12-16 | Arco Chemical Tehnology, L.P. | Oxirane production |
| US5736483A (en) * | 1996-10-25 | 1998-04-07 | Scientific Design Co., Inc. | Niobium or tantalum promoted silver catalyst |
| US5703001A (en) * | 1996-10-25 | 1997-12-30 | Scientific Design Company, Inc. | Promoted silver catalyst |
| US5780656A (en) * | 1997-04-14 | 1998-07-14 | Scientific Design Company, Inc. | Ethylene oxide catalyst and process |
| US5958824A (en) * | 1997-09-02 | 1999-09-28 | Scientific Design Co., Inc. | Ethylene oxide catalyst |
| US5905053A (en) * | 1997-09-02 | 1999-05-18 | Scientific Design Company, Inc. | Ethylene oxide catalyst |
| US5854167A (en) * | 1997-09-02 | 1998-12-29 | Scientific Design Company, Inc. | Ethylene oxide catalyst |
| TW408034B (en) * | 1997-12-16 | 2000-10-11 | Nippon Catalytic Chem Ind | Silver catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide |
| TW426545B (en) * | 1997-12-25 | 2001-03-21 | Nippon Catalytic Chem Ind | Silver catalyst for production of ethylene oxide, method for production thereof, and method for production of ethylene oxide |
| US6074973A (en) * | 1998-03-20 | 2000-06-13 | Engelhard Corporation | Catalyzed hydrocarbon trap material and method of making the same |
| JP3973340B2 (ja) | 1999-10-05 | 2007-09-12 | Necエレクトロニクス株式会社 | 半導体装置、配線基板、及び、それらの製造方法 |
| ZA200200049B (en) * | 2001-01-25 | 2002-07-16 | Nippon Catalytic Chem Ind | Fixed-bed shell-and-tube reactor and its usage. |
| AU2002241969B2 (en) * | 2001-02-08 | 2006-06-15 | Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg | Exothermic reaction system |
| US7294317B2 (en) * | 2001-02-08 | 2007-11-13 | Sd Lizenzverwertungsgesellschaft Mbh & Co. | Exothermic reaction system |
| US7193094B2 (en) | 2001-11-20 | 2007-03-20 | Shell Oil Company | Process and systems for the epoxidation of an olefin |
| US6987080B2 (en) | 2002-03-01 | 2006-01-17 | Scientific Design Company, Inc. | Ethylene oxide catalyst carrier preparation |
| DE60333292D1 (de) * | 2002-06-28 | 2010-08-19 | Shell Int Research | Verfahren für den start eines epoxierungsprozesses und epoxidierungsverfahren für olefine |
| WO2004002954A2 (en) * | 2002-06-28 | 2004-01-08 | Shell Internationale Research Maatschappij B.V. | A method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin |
| CA2520776C (en) * | 2003-04-01 | 2012-05-08 | Shell Internationale Research Maatschappij B.V. | An olefin epoxidation process and a catalyst for use in the process |
| US7348444B2 (en) * | 2003-04-07 | 2008-03-25 | Shell Oil Company | Process for the production of an olefin oxide |
| US6846774B2 (en) * | 2003-04-23 | 2005-01-25 | Scientific Design Co., Inc. | Ethylene oxide catalyst |
| US6858560B2 (en) | 2003-04-23 | 2005-02-22 | Scientific Design Co., Inc. | Ethylene oxide catalyst |
| US8148555B2 (en) * | 2003-06-26 | 2012-04-03 | Shell Oil Company | Method for improving the selectivity of a catalyst and a process for the epoxidation of an olefin |
| US20050027133A1 (en) * | 2003-07-29 | 2005-02-03 | Saudi Basic Industries Corporation | Method of making a catalyst for direct oxidation of an alkene to an alkene oxide |
| US7404834B2 (en) * | 2005-02-11 | 2008-07-29 | Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg Lenbachplatz 6 | Ethylene oxide plant operation |
| US7759284B2 (en) | 2005-05-09 | 2010-07-20 | Scientific Design Company, Inc. | Calcination in an inert gas in the presence of a small concentration of an oxidizing component |
| US7771471B2 (en) | 2005-05-13 | 2010-08-10 | C & C Vision International Limited | Floating optic accommodating intraocular lens |
| WO2007092738A2 (en) * | 2006-02-03 | 2007-08-16 | Shell Oil Company | A process for treating a catalyst, the catalyst, and use of the catalyst |
| US7837730B2 (en) | 2006-02-21 | 2010-11-23 | C & C International Limited | Floating optic accommodating intraocular lens |
| US8097557B2 (en) | 2006-08-08 | 2012-01-17 | Sd Lizenverwertungsgesellschaft Mbh & Co. Kg | Two-stage calcination for catalyst production |
| US7977274B2 (en) * | 2006-09-29 | 2011-07-12 | Sd Lizenzverwertungsgesellschaft Mbh & Co. Kg | Catalyst with bimodal pore size distribution and the use thereof |
| BRPI0811311A2 (pt) * | 2007-05-09 | 2015-01-27 | Shell Internationale Res Maaschappij B V | Catalisador de epoxidação, um processo para a preparação do catalisador, e um processo para a produção de um óxido de olefina, um 1,2-diol, um éter 1,2-diol, um 1,2-carbonato, ou uma alcanolamina. |
| BRPI0811305B1 (pt) | 2007-05-09 | 2020-02-27 | Shell Internationale Research Maatschappij B.V. | Catalisador de epoxidação, um processo para preparação do catalisador e um processo para a produção de um óxido de olefina, um 1,2-diol, um éter de 1,2-diol, um 1,2-carbonato ou uma alcanolamina |
| WO2009137431A2 (en) * | 2008-05-07 | 2009-11-12 | Shell Oil Company | A process for the production of an olefin oxide, a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, or an alkanolamine |
| JP6099307B2 (ja) | 2008-05-07 | 2017-03-22 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | エポキシ化工程の始動方法、エチレンオキシド、1,2−ジオール、1,2−ジオールエーテル、1,2−カーボネートまたはアルカノールアミンの製造方法 |
| WO2010001732A1 (ja) | 2008-06-30 | 2010-01-07 | 株式会社日本触媒 | 固定床多管式反応器への固体粒状物の充填方法 |
| JP2011121048A (ja) * | 2009-12-09 | 2011-06-23 | Rohm & Haas Co | 固体触媒物質をブレンドし、管状構造物に装填する方法 |
| TW201213013A (en) * | 2010-05-17 | 2012-04-01 | Scient Design Co | Method for preparing an epoxidation catalyst |
| TW201208763A (en) | 2010-05-17 | 2012-03-01 | Scient Design Co | Method for making a highly selective ethylene oxide catalyst |
| EP2696971A4 (de) * | 2011-04-14 | 2014-11-26 | Basf Se | Verfahren zur herstellung eines katalysators zur oxidation von ethen zu ethylenoxid |
| US10300462B2 (en) | 2013-12-19 | 2019-05-28 | Scientific Design Company, Inc. | High concentration silver solutions for ethylene oxide catalyst preparation |
| KR20160018053A (ko) | 2014-08-07 | 2016-02-17 | 이병길 | 설탕의 양을 조절할 수 있는 커피믹스 |
| WO2018102377A1 (en) | 2016-12-02 | 2018-06-07 | Shell Oil Company | Methods for conditioning an ethylene epoxidation catalyst and associated methods for the production of ethylene oxide |
| TWI808125B (zh) | 2018-02-07 | 2023-07-11 | 德商巴斯夫歐洲公司 | 有效地將乙烯氧化轉化為環氧乙烷之催化劑 |
| EP3749449B1 (en) | 2018-02-07 | 2022-02-02 | Basf Se | Method for preparing a silver impregnation solution |
| EP3639923A1 (en) | 2018-10-15 | 2020-04-22 | Basf Se | Process for producing ethylene oxide by gas-phase oxidation of ethylene |
| EP3639924A1 (en) | 2018-10-15 | 2020-04-22 | Basf Se | Catalyst for producing ethylene oxide by gas-phase oxidation |
| EP3659703A1 (en) | 2018-11-28 | 2020-06-03 | Basf Se | Catalyst for producing ethylene oxide by gas-phase oxidation |
| WO2021038027A1 (en) | 2019-08-28 | 2021-03-04 | Basf Se | Process for preparing an epoxidation catalyst |
| EP3885038A1 (en) | 2020-03-27 | 2021-09-29 | Basf Se | Process for producing an epoxidation catalyst |
| EP4126350B1 (en) | 2020-03-27 | 2024-05-08 | Basf Se | Process for producing a silver-based epoxidation catalyst |
| US20230256415A1 (en) | 2020-06-26 | 2023-08-17 | Basf Se | Production of porous alpha-alumina supports from boehmitic derived aluminas |
| US20230256420A1 (en) | 2020-06-26 | 2023-08-17 | Basf Se | Shaped catalyst body for the production of ethylene oxide |
| EP4171802A1 (de) | 2020-06-26 | 2023-05-03 | Basf Se | Poröser katalysatorträger-formkörper |
| EP4284552A1 (en) | 2021-01-26 | 2023-12-06 | Basf Se | Epoxidation catalyst |
| CN117545552A (zh) | 2021-06-25 | 2024-02-09 | 巴斯夫欧洲公司 | 高纯度压片阿尔法氧化铝催化剂载体 |
| CN117696051A (zh) * | 2022-09-07 | 2024-03-15 | 中国石油化工股份有限公司 | 一种银催化剂及其合成方法和应用 |
| TW202421267A (zh) | 2022-10-12 | 2024-06-01 | 德商巴斯夫歐洲公司 | 環氧化催化劑 |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US508096A (en) * | 1893-11-07 | Clasp for pencils | ||
| US3702259A (en) * | 1970-12-02 | 1972-11-07 | Shell Oil Co | Chemical production of metallic silver deposits |
| US3962136A (en) * | 1972-01-07 | 1976-06-08 | Shell Oil Company | Catalyst for production of ethylene oxide |
| JPS57107240A (en) * | 1980-12-26 | 1982-07-03 | Nippon Shokubai Kagaku Kogyo Co Ltd | Production of silver catalyst for producing ethylene oxide |
| DE3310685A1 (de) * | 1982-07-24 | 1984-02-09 | Hoechst Ag, 6230 Frankfurt | Silberkatalysatoren, verfahren zu ihrer herstellung und ihre verwendung zur herstellung von ethylenoxid |
| EP0211521B1 (en) * | 1985-07-31 | 1990-03-21 | Imperial Chemical Industries Plc | Process of promoting catalysts for the production of alkylene oxides |
| US4761394A (en) * | 1986-10-31 | 1988-08-02 | Shell Oil Company | Ethylene oxide catalyst and process for preparing the catalyst |
| US4766105A (en) * | 1986-10-31 | 1988-08-23 | Shell Oil Company | Ethylene oxide catalyst and process for preparing the catalyst |
| JP2637537B2 (ja) * | 1989-01-24 | 1997-08-06 | 株式会社日本触媒 | エチレンオキシド製造用銀触媒およびその製造方法 |
| US5081096A (en) * | 1990-07-25 | 1992-01-14 | Eastman Kodak Company | Epoxidation catalyst |
| US6184175B1 (en) * | 1993-03-01 | 2001-02-06 | Scientic Design Company, Inc. | Process for preparing silver catalyst |
| US5504052A (en) * | 1994-12-02 | 1996-04-02 | Scientific Design Company, Inc. | Silver catalyst preparation |
-
1994
- 1994-12-02 US US08/348,340 patent/US5504052A/en not_active Expired - Lifetime
-
1995
- 1995-11-29 WO PCT/US1995/015568 patent/WO1996016734A1/en not_active Ceased
- 1995-11-29 CN CN95196582A patent/CN1094387C/zh not_active Expired - Lifetime
- 1995-11-29 DE DE69525648T patent/DE69525648T2/de not_active Revoked
- 1995-11-29 KR KR1019970703655A patent/KR100374692B1/ko not_active Expired - Lifetime
- 1995-11-29 AU AU45050/96A patent/AU691392B2/en not_active Ceased
- 1995-11-29 EP EP95943625A patent/EP0794833B1/en not_active Revoked
- 1995-11-29 BR BR9509942A patent/BR9509942A/pt not_active IP Right Cessation
- 1995-11-29 MX MX9704065A patent/MX198169B/es unknown
- 1995-11-29 AT AT95943625T patent/ATE213662T1/de not_active IP Right Cessation
- 1995-11-29 CA CA002206495A patent/CA2206495C/en not_active Expired - Lifetime
- 1995-11-29 JP JP51905996A patent/JP4023555B2/ja not_active Expired - Lifetime
- 1995-12-19 IN IN2354DE1995 patent/IN192066B/en unknown
-
1996
- 1996-01-16 US US08/587,281 patent/US5646087A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| MX198169B (es) | 2000-08-18 |
| IN192066B (enExample) | 2004-02-14 |
| EP0794833B1 (en) | 2002-02-27 |
| MX9704065A (es) | 1997-08-30 |
| BR9509942A (pt) | 1998-01-27 |
| EP0794833A1 (en) | 1997-09-17 |
| KR980700124A (ko) | 1998-03-30 |
| KR100374692B1 (ko) | 2003-05-16 |
| DE69525648D1 (de) | 2002-04-04 |
| DE69525648T2 (de) | 2002-09-12 |
| AU691392B2 (en) | 1998-05-14 |
| JPH10510212A (ja) | 1998-10-06 |
| CN1094387C (zh) | 2002-11-20 |
| JP4023555B2 (ja) | 2007-12-19 |
| US5504052A (en) | 1996-04-02 |
| CA2206495A1 (en) | 1996-06-06 |
| CN1168644A (zh) | 1997-12-24 |
| CA2206495C (en) | 2004-05-11 |
| US5646087A (en) | 1997-07-08 |
| EP0794833A4 (en) | 1998-02-25 |
| WO1996016734A1 (en) | 1996-06-06 |
| AU4505096A (en) | 1996-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69525648D1 (de) | Herstellung eines silberkatalysators | |
| AU8576191A (en) | Alkylene oxide catalysts having enhanced activity and/or stability | |
| AU5321190A (en) | Alkylene oxide catalysts having enhanced activity and/or stability | |
| ATE68372T1 (de) | Verfahren zur herstellung eines silber enthaltenden katalysators. | |
| AU561080B2 (en) | Ruthenium catalyst for ammonia production | |
| ATE168042T1 (de) | Epoxydierungskatalysator und verfahren | |
| ES2041053T3 (es) | Catalizadores para la polimerizacion de olefinas. | |
| DE3764754D1 (de) | Katalysator fuer die umwandlung von synthesegas, seine herstellung und seine verwendung. | |
| ATE182087T1 (de) | Trägerkatalysator für gasphasenoxidationsreaktionen | |
| FI964531A0 (fi) | Korkea-aktiivisia katalyyttejä | |
| CA2186331A1 (en) | Catalyst for production of ethylene oxide | |
| BR0011184B1 (pt) | processo para a hidro-oxidaÇço de olefinas a àxidos de olefinas usando catalisador de ouro oxidado, composiÇço de catalisador e mÉtodo para preparar uma composiÇço de catalisador. | |
| MY121382A (en) | Vinyl acetate catalyst comprising metallic palladium and gold prepared with potassium aurate | |
| DE3676829D1 (de) | Stabilisierte ueberzuege fuer katalysatortraeger aus aluminiumoxyd. | |
| ATE92781T1 (de) | Verfahren zur herstellung von traegerkatalysatoren zur oxidation von kohlenmonoxid. | |
| BG70207A (bg) | Метод за получаване на сребърни катализатори | |
| BR0011158A (pt) | Método para preparar um catalisador e composição de catalisador compreendendo ouro sobre um suporte contendo titânio | |
| DE69202192D1 (de) | Herstellung von Difluoromethan. | |
| CA2196059A1 (en) | Process for preparing silver catalyst | |
| ATE156126T1 (de) | Fungizides mittel, seine herstellung und mikroorganismus dafür | |
| DE3770073D1 (de) | Katalysator fuer die herstellung von alpha,beta-aethylenisch ungesaettigten monocarboxylsaeuren. | |
| BR9813104A (pt) | Catalisador de acetato de vinila compreendendo paládio metálico e ouro, e acetato cúprico | |
| ATE25839T1 (de) | Verfahren zur katalytischen herstellung von wasserstoffperoxid aus sauerstoff und wasserstoff. | |
| ATE255573T1 (de) | Herstellung von cyclocarbonaten | |
| MY105209A (en) | Catalyst for oxidation of ethylene to ethylene oxide. |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |