BR7705256A - Processo e preparacao de eteno - Google Patents

Processo e preparacao de eteno

Info

Publication number
BR7705256A
BR7705256A BR7705256A BR7705256A BR7705256A BR 7705256 A BR7705256 A BR 7705256A BR 7705256 A BR7705256 A BR 7705256A BR 7705256 A BR7705256 A BR 7705256A BR 7705256 A BR7705256 A BR 7705256A
Authority
BR
Brazil
Prior art keywords
preparation
ethene
ethene process
Prior art date
Application number
BR7705256A
Other languages
English (en)
Portuguese (pt)
Inventor
H Barrocas
R Assis
J Silva
Original Assignee
Petroleo Brasileiro Sa
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4006904&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR7705256(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority to BR7705256A priority Critical patent/BR7705256A/pt
Application filed by Petroleo Brasileiro Sa filed Critical Petroleo Brasileiro Sa
Priority to IN832/CAL/78A priority patent/IN150493B/en
Priority to ZA00784321A priority patent/ZA784321B/xx
Priority to MX174412A priority patent/MX147969A/es
Priority to BE189688A priority patent/BE869500A/xx
Priority to FR7822963A priority patent/FR2399992B1/fr
Priority to AR273223A priority patent/AR215330A1/es
Priority to AU38732/78A priority patent/AU524261B2/en
Priority to JP53096561A priority patent/JPS5919927B2/ja
Priority to DE2834699A priority patent/DE2834699C2/de
Priority to GB7832581A priority patent/GB2002416B/en
Priority to US05/932,283 priority patent/US4232179A/en
Publication of BR7705256A publication Critical patent/BR7705256A/pt
Priority to KE3366A priority patent/KE3366A/xx

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)
BR7705256A 1977-08-09 1977-08-09 Processo e preparacao de eteno BR7705256A (pt)

Priority Applications (13)

Application Number Priority Date Filing Date Title
BR7705256A BR7705256A (pt) 1977-08-09 1977-08-09 Processo e preparacao de eteno
IN832/CAL/78A IN150493B (enExample) 1977-08-09 1978-07-29
ZA00784321A ZA784321B (en) 1977-08-09 1978-07-31 Process for preparing ethene
MX174412A MX147969A (es) 1977-08-09 1978-08-03 Procedimiento mejorado para la obtencion de eteno
BE189688A BE869500A (fr) 1977-08-09 1978-08-03 Procede de preparation de l'ethylene
FR7822963A FR2399992B1 (fr) 1977-08-09 1978-08-03 Procede de preparation de l'ethene, par deshydratation de l'ethanol
AR273223A AR215330A1 (es) 1977-08-09 1978-08-07 Procedimiento de preparacion de eteno por deshidratacion de alcohol etilico
AU38732/78A AU524261B2 (en) 1977-08-09 1978-08-08 Ethylene from ethanol
GB7832581A GB2002416B (en) 1977-08-09 1978-08-08 Process for preparing ethene
JP53096561A JPS5919927B2 (ja) 1977-08-09 1978-08-08 エテンの製造法
DE2834699A DE2834699C2 (de) 1977-08-09 1978-08-08 Verfahren zur Herstellung von Äthylen
US05/932,283 US4232179A (en) 1977-08-09 1978-08-09 Process for preparing ethene
KE3366A KE3366A (en) 1977-08-09 1984-01-13 Process for preparing ethene

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 (1)

Publication Number Publication Date
BR7705256A true BR7705256A (pt) 1979-04-03

Family

ID=4006904

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7705256A BR7705256A (pt) 1977-08-09 1977-08-09 Processo e preparacao de eteno

Country Status (13)

Country Link
US (1) US4232179A (enExample)
JP (1) JPS5919927B2 (enExample)
AR (1) AR215330A1 (enExample)
AU (1) AU524261B2 (enExample)
BE (1) BE869500A (enExample)
BR (1) BR7705256A (enExample)
DE (1) DE2834699C2 (enExample)
FR (1) FR2399992B1 (enExample)
GB (1) GB2002416B (enExample)
IN (1) IN150493B (enExample)
KE (1) KE3366A (enExample)
MX (1) MX147969A (enExample)
ZA (1) ZA784321B (enExample)

Families Citing this family (75)

* Cited by examiner, † Cited by third party
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
US8389784B2 (en) 2005-11-14 2013-03-05 Mitsui Chemicals, Inc. Method of producing propylene containing biomass-origin carbon
EP1792886A1 (en) * 2005-11-29 2007-06-06 BP Chemicals Limited Process for producing propylene
EP1790627A1 (en) * 2005-11-29 2007-05-30 BP Chemicals Limited Process for producing olefins
EP1792885A1 (en) * 2005-11-29 2007-06-06 BP Chemicals Limited Process for producing ethylene
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 (en) * 2007-05-11 2008-11-19 Ineos Europe Limited Dehydration of alcohols over supported heteropolyacids
EP2050730A1 (en) * 2007-10-17 2009-04-22 BP Chemicals Limited Process for preparing ethene
EP2162475B1 (en) * 2007-12-05 2011-10-12 Braskem S.A. Integrated process for the production of ethylene-butylene copolymer, an ethylene-butylene copolymer and the use of ethylene and 1-butylene, as comonomer, sourced from renewable natural raw materials
WO2009098268A1 (en) * 2008-02-07 2009-08-13 Total Petrochemicals Research Feluy Dehydration of alcohols in the presence of an inert component
EP2108634A1 (en) 2008-04-11 2009-10-14 Total Petrochemicals Research Feluy Dehydration of alcohols on crystalline silicates
EP2108636A1 (en) * 2008-04-11 2009-10-14 Total Petrochemicals Research Feluy Dehydration of alcohols in the presence of an inert component.
EP2108635A1 (en) 2008-04-11 2009-10-14 Total Petrochemicals Research Feluy Process to make olefins from ethanol
BRPI0908138A2 (pt) * 2008-02-07 2015-08-11 Total Petrochemicals Res Feluy Processo para gerar olefinas a partir do etanol
EP2108637A1 (en) * 2008-04-11 2009-10-14 Total Petrochemicals Research Feluy Process to make olefins from ethanol.
EP2090561A1 (en) 2008-02-07 2009-08-19 Total Petrochemicals Research Feluy Dehydration of alcohols on crystalline silicates
KR101227221B1 (ko) * 2008-02-07 2013-01-28 토탈 리서치 앤드 테크놀로지 펠루이 에탄올로부터의 올레핀의 제조 방법
JP5497667B2 (ja) * 2008-02-07 2014-05-21 トタル リサーチ アンド テクノロジー フエリユイ 結晶性シリケート上でのアルコールの脱水
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
EA020426B1 (ru) 2008-11-28 2014-11-28 Тотал Петрокемикалз Ресерч Фелюи Очистка спиртов перед их применением в присутствии кислотного катализатора
EP2192101A1 (en) 2008-11-28 2010-06-02 Total Petrochemicals Research Feluy Purification of alcohols prior to their use in the presence of an acid catalyst
CN102471198B (zh) 2009-07-01 2015-03-11 陶氏环球技术有限责任公司 由脂族醇制备烯烃的工艺
EP2539304B1 (en) 2010-02-24 2014-01-08 Bp P.L.C. Process for preparing an alkene
US20120302810A1 (en) 2010-02-24 2012-11-29 Stephen Roy Partington Process for preparing an alkene
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.
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.
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
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
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 (en) 2011-11-17 2013-05-22 Solvay Sa Process for the manufacture of at least one ethylene derivative compound from bioethanol
US20170266635A1 (en) * 2012-01-09 2017-09-21 Petron Scientech, Inc. Reactor and process for the 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
US20130178674A1 (en) * 2012-01-09 2013-07-11 Hassan Taheri Reactor and process for dehydration of ethanol to ethylene
BR112014027338B1 (pt) 2012-05-16 2021-03-23 China Petroleum & Chemical Corporation Aparelho para produção de etileno e um método de produção do mesmo
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 (de) 2012-12-04 2014-06-11 Linde Aktiengesellschaft Verfahren zur katalytischen Dehydratisierung von Olefinen
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
CN105793213B (zh) 2013-12-13 2018-06-08 陶氏环球技术有限责任公司 以顺序次序使用至少两种不同催化剂的烷醇到烯烃的转化
US10661243B2 (en) 2014-12-16 2020-05-26 Technip E&C Limited Process and apparatus for ethanol dehydration
WO2016107758A1 (en) 2014-12-31 2016-07-07 Total Research & Technology Feluy Process for preparing olefins by dehydrating alcohols with less side effects comprising addition of organic acids
WO2016107759A1 (en) 2014-12-31 2016-07-07 Total Research & Technology Feluy Process for preparing olefins by dehydrating alcohols with less side effects comprising addition of sulfur containing compounds
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
JP2024121026A (ja) * 2022-08-30 2024-09-06 旭化成株式会社 エタノール及びエチレンの変換方法、プロピレンの製造方法、芳香族化合物の製造方法、並びに、エタノール及びエチレンの変換装置
EP4474371A1 (en) * 2022-01-31 2024-12-11 Asahi Kasei Kabushiki Kaisha Method for converting ethanol and method for producing other hydrocarbon
US20240076249A1 (en) * 2022-08-30 2024-03-07 Uop Llc Radial flow reactor for an ethanol dehydration process
US20240182801A1 (en) * 2022-08-30 2024-06-06 Uop Llc Steam integration in ethanol to jet fuel process
US12479779B2 (en) * 2022-08-30 2025-11-25 Uop Llc Steam integration in ethanol to jet fuel process
JP2024051654A (ja) * 2022-09-30 2024-04-11 旭化成株式会社 エタノールの変換方法、炭化水素の製造方法、プロピレンの製造方法、芳香族化合物の製造方法、並びに、エタノールの変換装置
KR20250057863A (ko) * 2022-09-30 2025-04-29 아사히 가세이 가부시키가이샤 에탄올의 변환 방법, 탄화수소의 제조 방법, 프로필렌의 제조 방법, 방향족 화합물의 제조 방법, 및, 에탄올의 변환 장치
WO2024089254A1 (en) 2022-10-28 2024-05-02 Basf Se Process for the manufacture of a c4-olefin-derived chemical of interest, in particular citral, from renewably-sourced ethanol
CN120129670A (zh) 2022-10-28 2025-06-10 巴斯夫欧洲公司 用于由可再生来源的乙醇制造感兴趣的丙烯衍生的化学品、特别是丙烯酸酯的方法
WO2024133082A1 (en) 2022-12-20 2024-06-27 Basf Se Manufacture of an ethylene-derived chemical of interest in combination with production of thermal energy
KR20250124860A (ko) 2022-12-20 2025-08-20 바스프 에스이 가열된 스팀의 발생과 조합된 에틸렌-유래된 관심 화학물질, 특히 아크릴산의 제조
FR3153613B1 (fr) 2023-09-29 2025-10-10 Ifp Energies Now Procede de production de distillats moyens en particulier de kerosene a partir d’une charge alcoolique
WO2025078353A1 (en) 2023-10-09 2025-04-17 Basf Se Manufacture of ethylene-derived chemicals having a bio-based carbon content from pyrolysis oil
WO2025078359A1 (en) 2023-10-09 2025-04-17 Basf Se Manufacture of ethylene-derived chemicals having a bio-based carbon content from bio-naphtha
WO2025078362A1 (en) 2023-10-09 2025-04-17 Basf Se Process for the manufacture of styrene acrylic copolymers having a renewably-sourced carbon content
WO2025224042A1 (en) 2024-04-23 2025-10-30 Basf Se Process for the manufacture of renewably-sourced n-butanol or 2-ethylhexanol

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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 (enExample) * 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

Also Published As

Publication number Publication date
US4232179B1 (enExample) 1987-12-08
DE2834699A1 (de) 1979-02-22
BE869500A (fr) 1978-12-01
JPS5436203A (en) 1979-03-16
DE2834699C2 (de) 1986-11-06
US4232179A (en) 1980-11-04
FR2399992A1 (fr) 1979-03-09
FR2399992B1 (fr) 1985-08-09
AU524261B2 (en) 1982-09-09
KE3366A (en) 1984-02-03
GB2002416A (en) 1979-02-21
GB2002416B (en) 1982-03-03
ZA784321B (en) 1979-07-25
MX147969A (es) 1983-02-17
AU3873278A (en) 1980-02-14
IN150493B (enExample) 1982-10-23
JPS5919927B2 (ja) 1984-05-09
AR215330A1 (es) 1979-09-28

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