SG50405A1 - A dimensionally stable solid polymer blend and a lubricating oil composition containing same - Google Patents

A dimensionally stable solid polymer blend and a lubricating oil composition containing same

Info

Publication number
SG50405A1
SG50405A1 SG1996000338A SG1996000338A SG50405A1 SG 50405 A1 SG50405 A1 SG 50405A1 SG 1996000338 A SG1996000338 A SG 1996000338A SG 1996000338 A SG1996000338 A SG 1996000338A SG 50405 A1 SG50405 A1 SG 50405A1
Authority
SG
Singapore
Prior art keywords
lubricating oil
composition containing
oil composition
solid polymer
polymer blend
Prior art date
Application number
SG1996000338A
Other languages
English (en)
Inventor
Alfred Karl Jung
Lee Ann Brugger
Maria Magdalena Kapuscinski
Mieke Mortier
Original Assignee
Ethyl Additives Corp
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
Application filed by Ethyl Additives Corp filed Critical Ethyl Additives Corp
Publication of SG50405A1 publication Critical patent/SG50405A1/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M157/00Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
    • C10M157/04Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential at least one of them being a nitrogen-containing compound
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04Homopolymers or copolymers of ethene
    • C08L23/08Copolymers of ethene
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L23/00Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/16Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/02Polyethene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/04Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing propene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M143/00Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation
    • C10M143/14Lubricating compositions characterised by the additive being a macromolecular hydrocarbon or such hydrocarbon modified by oxidation containing non-conjugated diene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M149/00Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M149/00Lubricating compositions characterised by the additive being a macromolecular compound containing nitrogen
    • C10M149/02Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M149/10Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M157/00Lubricating compositions characterised by the additive being a mixture of two or more macromolecular compounds covered by more than one of the main groups C10M143/00 - C10M155/00, each of these compounds being essential
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/40Applications used as motor oil additive
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00Polymer mixtures characterised by other features
    • C08L2205/02Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/022Ethene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/02Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
    • C10M2205/024Propene
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2205/00Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
    • C10M2205/08Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing non-conjugated dienes
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/02Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2217/028Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a nitrogen-containing hetero ring
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/04Macromolecular compounds from nitrogen-containing monomers obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10MLUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2217/00Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2217/06Macromolecular compounds obtained by functionalisation op polymers with a nitrogen containing compound
    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10NINDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2020/00Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
    • C10N2020/01Physico-chemical properties
SG1996000338A 1993-08-02 1994-08-01 A dimensionally stable solid polymer blend and a lubricating oil composition containing same SG50405A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10085793A 1993-08-02 1993-08-02

Publications (1)

Publication Number Publication Date
SG50405A1 true SG50405A1 (en) 2000-10-24

Family

ID=22281898

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1996000338A SG50405A1 (en) 1993-08-02 1994-08-01 A dimensionally stable solid polymer blend and a lubricating oil composition containing same

Country Status (7)

Country Link
EP (1) EP0638611A1 (de)
JP (1) JPH07149963A (de)
KR (1) KR950005896A (de)
AU (1) AU677668B2 (de)
BR (1) BR9403127A (de)
CA (1) CA2127918A1 (de)
SG (1) SG50405A1 (de)

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WO1998034229A1 (fr) * 1997-02-03 1998-08-06 Matsushita Electric Industrial Co., Ltd. Systeme de traitement des donnees, dispositif enregistreur/lecteur, technique de traitement des donnees et methode de gestion de fichiers
JP4427669B2 (ja) * 1998-12-09 2010-03-10 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
KR100662062B1 (ko) * 1999-03-30 2006-12-27 미쓰이 가가쿠 가부시키가이샤 윤활유용 점도 조정제 및 윤활유 조성물
AU2001280879B2 (en) * 2000-07-31 2006-10-05 The Lubrizol Corporation Polymeric mixture useful as viscosity improver for lubricating oils
JP2002080662A (ja) * 2000-09-08 2002-03-19 Jsr Corp ゴム組成物
DE60132249D1 (de) * 2000-12-04 2008-02-14 Exxonmobil Chem Patents Inc Für viskositätsindexverbesserer und schmiermittelzusammensetzungen geeignete ethylencopolymerzusammensetzungen
JP4694039B2 (ja) * 2001-05-28 2011-06-01 三井化学株式会社 潤滑油用粘度指数向上剤およびこれを含む潤滑油組成物
JP4606644B2 (ja) * 2001-05-29 2011-01-05 三井化学株式会社 潤滑油用粘度調整剤および潤滑油組成物
JP4805235B2 (ja) * 2001-05-31 2011-11-02 三井化学株式会社 オレフィンブロック共重合体、潤滑油用粘度指数向上剤および潤滑油組成物
JP5248728B2 (ja) * 2001-09-27 2013-07-31 三井化学株式会社 潤滑油粘度調整剤および潤滑油組成物
US6753381B2 (en) * 2002-03-15 2004-06-22 Ethyl Corporation Polymer blends and their application as viscosity index improvers
ITMI20041672A1 (it) 2004-08-27 2004-11-27 Polimeri Europa Spa Copolimeri etilene-propilene a migliorata stabilita' di forma adatti alla modifica degli oli lubrificanti e procedimento per la loro preparazione
JP4749747B2 (ja) * 2005-03-25 2011-08-17 三井化学株式会社 潤滑油用粘度調整剤
DE102005061627A1 (de) * 2005-12-21 2007-06-28 Lanxess Deutschland Gmbh Synthetischer Kautschuk mit enger Molekulargewichtsverteilung, ein Verfahren zu seiner Herstellung und seine Verwendung
ITMI20060286A1 (it) 2006-02-16 2007-08-17 Polimeri Europa Spa Copolimeri etilene-propilene adatti alla modifica degli oli lubrificanti e procedimento per la loro preparazione
ES2666595T3 (es) * 2006-10-24 2018-05-07 Total Marketing Services Utilización de un fluido lubricante multifuncional
WO2009125075A1 (fr) * 2008-04-11 2009-10-15 Total Raffinage Marketing Fluide lubrifiant multifonctionnel
EP3214158A1 (de) 2008-08-08 2017-09-06 ExxonMobil Chemical Patents Inc. Verbesserte olefincopolymerzusammensetzungen zur viskositätsmodifikation von motoröl
US20120028865A1 (en) 2010-07-28 2012-02-02 Sudhin Datta Viscosity Modifiers Comprising Blends of Ethylene-Based Copolymers
US9127151B2 (en) 2009-04-28 2015-09-08 Exxonmobil Chemical Patents Inc. Polymer compositions having improved properties as viscosity index improvers and use thereof in lubricating oils
US8378042B2 (en) 2009-04-28 2013-02-19 Exxonmobil Chemical Patents Inc. Finishing process for amorphous polymers
US8618033B2 (en) 2010-01-22 2013-12-31 Exxonmobil Chemical Patents Inc. Ethylene copolymers, methods for their production, and use
CA2802109C (en) 2010-07-28 2015-04-07 Exxonmobil Chemical Patents Inc. Viscosity modifiers comprising blends of ethylene-based copolymers
KR101486833B1 (ko) * 2010-07-28 2015-01-29 엑손모빌 케미칼 패턴츠 인코포레이티드 점도 개질제로서의 에틸렌계 공중합체 조성물 및 이의 제조 방법
WO2012015572A1 (en) 2010-07-28 2012-02-02 Exxonmobil Chemical Patents Inc. Viscosity modifiers comprising blends of ethylene-based copolymers
US9139794B2 (en) 2012-02-03 2015-09-22 Exxonmobil Chemical Patents Inc. Process for the production of polymeric compositions useful as oil modifiers
US10316176B2 (en) 2012-02-03 2019-06-11 Exxonmobil Chemical Patents Inc. Polymer compositions and methods of making them
CN104080852A (zh) 2012-02-03 2014-10-01 埃克森美孚化学专利公司 可用于油料改性剂的聚合物组合物的制备方法
US9012578B2 (en) 2012-04-19 2015-04-21 Exxonmobil Chemical Patents Inc. Blocky ethylene propylene copolymers and methods for making them
US8859638B1 (en) * 2013-05-31 2014-10-14 Lion Copolymer Geismar, Llc Method for making a high solids cross-linked ethylene propylene diene terpolymer latex
US9260552B2 (en) 2013-11-15 2016-02-16 Exxonmobil Chemical Patents Inc. Process to produce polymers from pyridyldiamido transition metal complexes and use thereof
WO2015073157A1 (en) 2013-11-15 2015-05-21 Exxonmobil Chemical Patents Inc. Process to produce polymers from pyridyldiamido transition metal complexes and use thereof
EP3174961B1 (de) 2014-07-31 2019-11-20 ExxonMobil Chemical Patents Inc. Syndiotaktische propylenpolymere und schmierstoffe diese enthalten
US10513601B2 (en) 2017-01-05 2019-12-24 Exxonmobil Chemical Patents Inc. Ethylene-propylene copolymers with amorphous and semi-crystalline components
EP3714025A1 (de) 2017-11-21 2020-09-30 ExxonMobil Chemical Patents Inc. Bimodale copolymerzusammensetzungen verwendbar als ölmodifikatoren
CN111465677B (zh) 2017-12-13 2023-07-07 雪佛龙奥伦耐有限责任公司 用作油改性剂的双峰共聚物组合物和包含该组合物的润滑油
US11578155B2 (en) 2018-03-08 2023-02-14 Exxonmobil Chemical Patents Inc. Ethylene-propylene linear copolymers as viscosity modifiers
WO2019173605A1 (en) 2018-03-08 2019-09-12 Exxonmobil Chemical Patents Inc. Ethylene-propylene branched copolymers as viscosity modifiers with enhanced fuel economy
US20220289882A1 (en) 2019-08-27 2022-09-15 Chevron Oronite Company Llc Ethylene copolymers and use as viscosity modifiers
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KR20240009451A (ko) 2021-05-14 2024-01-22 엑손모빌 케미컬 패튼츠, 아이엔씨. 점도 개질제로서의 에틸렌-프로필렌 분지형 공중합체
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Also Published As

Publication number Publication date
EP0638611A1 (de) 1995-02-15
AU677668B2 (en) 1997-05-01
AU6758194A (en) 1995-02-09
JPH07149963A (ja) 1995-06-13
KR950005896A (ko) 1995-03-20
CA2127918A1 (en) 1995-02-03
BR9403127A (pt) 1995-04-11

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