FR2399992B1 - Procede de preparation de l'ethene, par deshydratation de l'ethanol - Google Patents
Procede de preparation de l'ethene, par deshydratation de l'ethanolInfo
- Publication number
- FR2399992B1 FR2399992B1 FR7822963A FR7822963A FR2399992B1 FR 2399992 B1 FR2399992 B1 FR 2399992B1 FR 7822963 A FR7822963 A FR 7822963A FR 7822963 A FR7822963 A FR 7822963A FR 2399992 B1 FR2399992 B1 FR 2399992B1
- Authority
- FR
- France
- Prior art keywords
- ethene
- dehydration
- ethanol
- preparation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/20—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms
- C07C1/24—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon starting from organic compounds containing only oxygen atoms as heteroatoms by elimination of water
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/02—Boron or aluminium; Oxides or hydroxides thereof
- C07C2521/04—Alumina
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
- C07C2521/08—Silica
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/12—Silica and alumina
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2521/00—Catalysts comprising the elements, oxides or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium or hafnium
- C07C2521/18—Carbon
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/02—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the alkali- or alkaline earth metals or beryllium
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/24—Chromium, molybdenum or tungsten
- C07C2523/28—Molybdenum
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/14—Phosphorus; Compounds thereof
- C07C2527/16—Phosphorus; Compounds thereof containing oxygen
- C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/14—Phosphorus; Compounds thereof
- C07C2527/16—Phosphorus; Compounds thereof containing oxygen
- C07C2527/167—Phosphates or other compounds comprising the anion (PnO3n+1)(n+2)-
- C07C2527/173—Phosphoric acid or other acids with the formula Hn+2PnO3n+1
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2529/00—Catalysts comprising molecular sieves
- C07C2529/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites, pillared clays
- C07C2529/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
-
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR7705256A BR7705256A (pt) | 1977-08-09 | 1977-08-09 | Processo e preparacao de eteno |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2399992A1 FR2399992A1 (fr) | 1979-03-09 |
FR2399992B1 true FR2399992B1 (fr) | 1985-08-09 |
Family
ID=4006904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7822963A Expired FR2399992B1 (fr) | 1977-08-09 | 1978-08-03 | Procede de preparation de l'ethene, par deshydratation de l'ethanol |
Country Status (13)
Country | Link |
---|---|
US (1) | US4232179A (fr) |
JP (1) | JPS5919927B2 (fr) |
AR (1) | AR215330A1 (fr) |
AU (1) | AU524261B2 (fr) |
BE (1) | BE869500A (fr) |
BR (1) | BR7705256A (fr) |
DE (1) | DE2834699C2 (fr) |
FR (1) | FR2399992B1 (fr) |
GB (1) | GB2002416B (fr) |
IN (1) | IN150493B (fr) |
KE (1) | KE3366A (fr) |
MX (1) | MX147969A (fr) |
ZA (1) | ZA784321B (fr) |
Families Citing this family (64)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BR8101487A (pt) * | 1981-03-13 | 1982-10-26 | Petroleo Brasileiro Sa | Processo de desidratacao de um alcool de baixo peso molecular |
JPS57190650A (en) * | 1981-05-15 | 1982-11-24 | Agency Of Ind Science & Technol | Porous crystalline catalyst for olefin synthesis |
US4404414A (en) * | 1982-09-28 | 1983-09-13 | Mobil Oil Corporation | Conversion of methanol to gasoline |
US4590320A (en) * | 1984-08-31 | 1986-05-20 | Mobil Oil Corporation | Conversion of methanol to olefins in a tubular reactor with light olefin co-feeding |
JPS6434929A (en) * | 1987-07-30 | 1989-02-06 | Jgc Corp | Method for dehydrating reaction of ethanol |
US4885405A (en) * | 1987-12-10 | 1989-12-05 | Horst Dornhagen | Process for the production of pure dimethylether and a catalyst used in the process |
JPH11217343A (ja) | 1998-01-30 | 1999-08-10 | Sangi Co Ltd | 化学工業原料及びハイオク燃料の合成法 |
US20050175519A1 (en) * | 2004-02-06 | 2005-08-11 | Rogers William A.Jr. | Microchannel compression reactor |
JPWO2007055361A1 (ja) * | 2005-11-14 | 2009-04-30 | 三井化学株式会社 | バイオマス由来の炭素を含むプロピレンの製造方法 |
EP1790627A1 (fr) * | 2005-11-29 | 2007-05-30 | BP Chemicals Limited | Procédé de production d'oléfines |
EP1792886A1 (fr) * | 2005-11-29 | 2007-06-06 | BP Chemicals Limited | Procédé de preparation de propylène |
EP1792885A1 (fr) * | 2005-11-29 | 2007-06-06 | BP Chemicals Limited | Procédé de preparation de l'éthylène |
BRPI0601803A (pt) * | 2006-05-18 | 2008-02-19 | Helcio Valladares Barrocas | processo para produção de eteno a partir de álcool etìlico |
JP2010030902A (ja) * | 2006-11-21 | 2010-02-12 | Mitsui Chemicals Inc | エチレンの製造方法 |
EP1992601A1 (fr) * | 2007-05-11 | 2008-11-19 | Ineos Europe Limited | Déshydratation d'alcools sur heteropolyacides supportés |
EP2050730A1 (fr) * | 2007-10-17 | 2009-04-22 | BP Chemicals Limited | Procédé de préparation d'éthène |
KR101649997B1 (ko) * | 2007-12-05 | 2016-08-23 | 브라스켐 에세.아. | 에틸렌-부틸렌 공중합체의 제조를 위한 통합 방법, 에틸렌-부틸렌 공중합체 및 재생성 천연 원자재로부터 유래한 공단량체로서의 에틸렌 및 1-부틸렌의 용도 |
EP2108636A1 (fr) * | 2008-04-11 | 2009-10-14 | Total Petrochemicals Research Feluy | Déshydratation d'alcool en présence d'un composant inerte |
CN101939277A (zh) * | 2008-02-07 | 2011-01-05 | 道达尔石油化学产品研究弗吕公司 | 醇在结晶硅酸盐上的脱水 |
BRPI0908138A2 (pt) * | 2008-02-07 | 2015-08-11 | Total Petrochemicals Res Feluy | Processo para gerar olefinas a partir do etanol |
EP2108634A1 (fr) | 2008-04-11 | 2009-10-14 | Total Petrochemicals Research Feluy | Déshydratation d'alcool sur des silicates cristallins |
EP2108635A1 (fr) | 2008-04-11 | 2009-10-14 | Total Petrochemicals Research Feluy | Processus de fabrication d'oléfines à partir d'éthanol |
CN101939275A (zh) * | 2008-02-07 | 2011-01-05 | 道达尔石油化学产品研究弗吕公司 | 醇在惰性组分存在下的脱水 |
EP2108637A1 (fr) * | 2008-04-11 | 2009-10-14 | Total Petrochemicals Research Feluy | Processus de fabrication d'oléfines à partir d'éthanol |
EP2090561A1 (fr) | 2008-02-07 | 2009-08-19 | Total Petrochemicals Research Feluy | Déshydratation d'alcool sur des silicates cristallins |
US20110105815A1 (en) * | 2008-02-07 | 2011-05-05 | Total Petrochemicals Research Feluy | Process to Make Olefins from Ethanol |
FR2934599B1 (fr) * | 2008-07-29 | 2012-12-21 | Arkema France | Fabrication de polyethylene a partir de matieres renouvelables, polyethylene obtenu et utilisations |
JP2010042343A (ja) * | 2008-08-12 | 2010-02-25 | National Institute Of Advanced Industrial & Technology | 低級オレフィン製造用触媒、その製造方法及びこれを用いた低級オレフィンの製造方法 |
EP2192101A1 (fr) | 2008-11-28 | 2010-06-02 | Total Petrochemicals Research Feluy | Purification d'alcool avant leur utilisation en présence d'un catalyseur acide |
CN102227397B (zh) | 2008-11-28 | 2014-11-26 | 道达尔研究技术弗吕公司 | 醇在其使用前在酸性催化剂的存在下的纯化 |
WO2011002699A2 (fr) | 2009-07-01 | 2011-01-06 | Dow Global Technologies Inc. | Procédé pour préparer des oléfines à partir dalcools aliphatiques |
ES2448818T3 (es) | 2010-02-24 | 2014-03-17 | Bp P.L.C. | Proceso para la preparación de un alqueno |
JP2013520478A (ja) | 2010-02-24 | 2013-06-06 | ビーピー ピー・エル・シー・ | アルケンを調製するプロセス |
FR2959752B1 (fr) | 2010-05-06 | 2012-06-08 | Inst Francais Du Petrole | Procede flexible de transformation de l'ethanol en distillats moyens mettant en oeuvre un systeme catalytique homogene et un systeme catalytique heterogene. |
FR2959750B1 (fr) | 2010-05-06 | 2013-02-15 | Inst Francais Du Petrole | Procede de production de kerosene a partir de bio-ethanol. |
FR2959751B1 (fr) | 2010-05-06 | 2012-06-08 | Inst Francais Du Petrole | Procede de production de base pour carburants a partir d'une charge ethylenique mettant en oeuvre au moins une etape d'oligomerisation en presence d'un systeme catalytique homogene. |
CN102381927B (zh) * | 2010-09-01 | 2014-04-30 | 中国石油化工股份有限公司 | 一种由乙醇合成乙苯的方法 |
CN102381922B (zh) * | 2010-09-01 | 2014-04-30 | 中国石油化工股份有限公司 | 一种由乙醇合成乙烯的方法 |
US9604888B2 (en) * | 2011-07-07 | 2017-03-28 | Ineos Europe Ag | Process and apparatus for producing olefins with heat transfer from steam cracking to alcohol dehydration process |
FR2978146B1 (fr) | 2011-07-21 | 2013-08-30 | IFP Energies Nouvelles | Procede de deshydratation de l'ethanol en ethylene a basse consommation energetique |
FR2981065B1 (fr) | 2011-10-07 | 2014-03-14 | IFP Energies Nouvelles | Procede de deshydratation de l'ethanol dilue en ethylene a basse consommation energetique sans recyclage de l'eau. |
EP2594547A1 (fr) | 2011-11-17 | 2013-05-22 | Solvay Sa | Processus de fabrication d'au moins un composé de dérivé d'éthylène à partir de bioéthanol |
US20130178674A1 (en) * | 2012-01-09 | 2013-07-11 | Hassan Taheri | Reactor and process for dehydration of ethanol to ethylene |
US20150265992A1 (en) * | 2014-03-20 | 2015-09-24 | Petron Scientec Inc. | Reactor and process for dehydration of ethanol to ethylene |
US20170266635A1 (en) * | 2012-01-09 | 2017-09-21 | Petron Scientech, Inc. | Reactor and process for the dehydration of ethanol to ethylene |
RU2625299C2 (ru) | 2012-05-16 | 2017-07-13 | Чайна Петролеум Энд Кемикал Корпорейшн | Аппарат для получения этилена и способ получения этилена |
FR2998568B1 (fr) * | 2012-11-27 | 2015-01-23 | IFP Energies Nouvelles | Procede de deshydratation de l'ethanol en ethylene a basse consommation |
FR2998567B1 (fr) | 2012-11-27 | 2014-12-26 | IFP Energies Nouvelles | Procede de deshydratation d'ethanol en ethylene mettant en oeuvre un pretraitement de la charge |
EP2740718A1 (fr) | 2012-12-04 | 2014-06-11 | Linde Aktiengesellschaft | Procédé de déshydratation catalytique d'oléfines |
FR3001969B1 (fr) | 2013-02-12 | 2015-08-21 | IFP Energies Nouvelles | Procede de production d'oxyde d'ethylene a partir d'un flux d'ethanol thermiquement integre |
FR3001968B1 (fr) | 2013-02-12 | 2015-02-27 | IFP Energies Nouvelles | Procede de production d'oxyde d'ethylene a partir d'un flux d'ethanol thermo-mecaniquement integre |
BR112016011768B1 (pt) | 2013-12-13 | 2020-11-24 | Dow Global Technologies Llc | Processo adiabatico |
PL3233766T3 (pl) | 2014-12-16 | 2024-01-29 | Technip E&C Limited | Proces i urządzenie do odwadniania etanolu |
WO2016107759A1 (fr) | 2014-12-31 | 2016-07-07 | Total Research & Technology Feluy | Procédé de préparation d'oléfines par déshydratation d'alcools avec moins d'effets secondaires comprenant l'addition de composés contenant du soufre |
WO2016107758A1 (fr) | 2014-12-31 | 2016-07-07 | Total Research & Technology Feluy | Procédé de préparation d'oléfines par déshydratation d'alcools avec moins d'effets secondaires comprenant l'addition d'acides organiques |
FI129508B (fi) * | 2018-04-20 | 2022-03-31 | Jani Karvanen | Kaatopää ja menetelmä pienpuun korjaamiseen |
US11260367B2 (en) | 2018-12-12 | 2022-03-01 | Instituto Nacional De Tecnologia | Catalytic system and process for the production of light olefins from ethanol |
FR3089973B1 (fr) | 2018-12-14 | 2020-12-25 | Ifp Energies Now | Procédé de déshydratation de l'éthanol en éthylène à basse consommation énergétique |
US11905396B2 (en) | 2019-09-30 | 2024-02-20 | Enlightened Product Solutions, LLC | Renewably-sourced biodegradable polyolefin packaging, utensils, and containers |
WO2023145941A1 (fr) * | 2022-01-31 | 2023-08-03 | 旭化成株式会社 | Procédé de conversion d'éthanol et procédé de production d'un autre hydrocarbure |
WO2024089255A1 (fr) | 2022-10-28 | 2024-05-02 | Basf Se | Procédé de fabrication d'un produit chimique d'intérêt dérivé de l'éthylène, en particulier du styrène, à partir d'éthanol d'origine renouvelable |
WO2024089252A1 (fr) | 2022-10-28 | 2024-05-02 | Basf Se | Procédé de fabrication d'un produit chimique d'intérêt dérivé du propylène, en particulier un ester acrylique, à partir d'éthanol d'origine renouvelable |
WO2024133081A1 (fr) | 2022-12-20 | 2024-06-27 | Basf Se | Fabrication d'un produit chimique d'intérêt dérivé de l'éthylène, en particulier de l'acide acrylique, en combinaison avec la génération de vapeur chauffée |
WO2024133082A1 (fr) | 2022-12-20 | 2024-06-27 | Basf Se | Fabrication d'un produit chimique d'intérêt dérivé d'éthylène en combinaison avec la production d'énergie thermique |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1909356A (en) * | 1928-02-27 | 1933-05-16 | Selden Co | Catalytic dehydration of alcohols |
DE501198C (de) * | 1928-11-10 | 1930-06-28 | Chem Fab Dr Hugo Stoltzenberg | Vorrichtung zur Entwicklung von AEthylen |
US2377026A (en) * | 1940-10-01 | 1945-05-29 | Air Reduction | Method of dehydrating alcohols |
NL63902C (fr) * | 1944-12-04 | |||
US2949493A (en) * | 1958-10-03 | 1960-08-16 | Happel John | Production of divinyl acetylenes by the dehydration of vinyl acetylenic alcohols in the presence of steam |
US4052479A (en) * | 1973-08-09 | 1977-10-04 | Mobil Oil Corporation | Conversion of methanol to olefinic components |
US4025576A (en) * | 1975-04-08 | 1977-05-24 | Mobil Oil Corporation | Process for manufacturing olefins |
-
1977
- 1977-08-09 BR BR7705256A patent/BR7705256A/pt unknown
-
1978
- 1978-07-29 IN IN832/CAL/78A patent/IN150493B/en unknown
- 1978-07-31 ZA ZA00784321A patent/ZA784321B/xx unknown
- 1978-08-03 BE BE189688A patent/BE869500A/fr not_active IP Right Cessation
- 1978-08-03 FR FR7822963A patent/FR2399992B1/fr not_active Expired
- 1978-08-03 MX MX174412A patent/MX147969A/es unknown
- 1978-08-07 AR AR273223A patent/AR215330A1/es active
- 1978-08-08 AU AU38732/78A patent/AU524261B2/en not_active Expired
- 1978-08-08 DE DE2834699A patent/DE2834699C2/de not_active Expired
- 1978-08-08 JP JP53096561A patent/JPS5919927B2/ja not_active Expired
- 1978-08-08 GB GB7832581A patent/GB2002416B/en not_active Expired
- 1978-08-09 US US05/932,283 patent/US4232179A/en not_active Expired - Lifetime
-
1984
- 1984-01-13 KE KE3366A patent/KE3366A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
KE3366A (en) | 1984-02-03 |
US4232179A (en) | 1980-11-04 |
US4232179B1 (fr) | 1987-12-08 |
BR7705256A (pt) | 1979-04-03 |
ZA784321B (en) | 1979-07-25 |
BE869500A (fr) | 1978-12-01 |
AU3873278A (en) | 1980-02-14 |
DE2834699C2 (de) | 1986-11-06 |
GB2002416B (en) | 1982-03-03 |
AU524261B2 (en) | 1982-09-09 |
FR2399992A1 (fr) | 1979-03-09 |
JPS5919927B2 (ja) | 1984-05-09 |
JPS5436203A (en) | 1979-03-16 |
GB2002416A (en) | 1979-02-21 |
AR215330A1 (es) | 1979-09-28 |
MX147969A (es) | 1983-02-17 |
DE2834699A1 (de) | 1979-02-22 |
IN150493B (fr) | 1982-10-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
FR2399992B1 (fr) | Procede de preparation de l'ethene, par deshydratation de l'ethanol | |
PT68573A (fr) | Procede de preparation des derivatifs d'imidazole. | |
LU80084A1 (fr) | Procede de preparation d'oligoimides | |
BE873136A (fr) | Procede de preparation de la vincadifformine | |
BE861112A (fr) | Procede de preparation de 2-nitrate de 1,4:3,6-dianhydro-d-glucitol | |
LU79630A1 (fr) | Procede de preparation de triazines 1,3,5-s-hexahydrotrisubstituees | |
BE877243A (fr) | Procede de preparation de l'o-methallyloxyphenol par monoetherification selective de la pyrocatechine | |
FR2335522A1 (fr) | Procede de preparation d'androstene-4 diones-3,17 | |
RO79048A (fr) | Procede pour la preparation des derives 5,11-dihydro-6h-pyrido-(2,3b)-(1,4)-benzodiazepin-6-one | |
PT68991A (fr) | Procede de preparation de derives de thiazolidinedione-2,4 | |
BE842940A (fr) | Procede de preparation d'oxaphospholannes-1,2, | |
BE865532A (fr) | Procede de preparation de 2,2-dimethylolalcanals | |
BE865728A (fr) | Procede de preparation du 2,3-dimethylpentanal | |
BE880509A (fr) | Procede de preparation de 2',6'-dialkyl-n-alcoxymethyl-2-chloro-acetanilides | |
BE863268R (fr) | Procede de preparation continue d'aldehydes par hydroformylation | |
BE845327A (fr) | Procede de preparation de 4,4'-dihydroxy-3-3'-5-5'-tretralcoyldiphenylalcanes | |
BE855371A (fr) | Procede de preparation de 1,1-difluorethylene | |
BE863267R (fr) | Procede de preparation continue d'aldehydes par hydroformylation | |
RO79264A (fr) | Procede pour la preparation des derives de oleandomicine | |
BE866662A (fr) | Procede de preparation de 3,5-dihalogenanilines | |
BE844259A (fr) | Procede de preparation d'aldehydes &,b-ethyleniques | |
LU78874A1 (fr) | Procede de preparation de nouvelles sulfonylhydrazones de 1,4-dioxo-et 4-oxoquinoxaline-2-carboxaldehyde | |
BE852700R (fr) | Procede de preparation d'oxaphospholannes-1,2 | |
FR2342270A1 (fr) | Procede de preparation de 1,2-cycloalcanediones par auto-oxydation de cycloalcanones | |
BE863350A (fr) | Procede de preparation du tetramethyl-diacetal de la cyclohexane-dione-1,4 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |