KR910021472A - 세정 또는 건조제로서의 (퍼플루오로알킬) 에틸렌의 용도, 및 이 목적을 위해 사용가능한 조성물 - Google Patents
세정 또는 건조제로서의 (퍼플루오로알킬) 에틸렌의 용도, 및 이 목적을 위해 사용가능한 조성물 Download PDFInfo
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- KR910021472A KR910021472A KR1019910002732A KR910002732A KR910021472A KR 910021472 A KR910021472 A KR 910021472A KR 1019910002732 A KR1019910002732 A KR 1019910002732A KR 910002732 A KR910002732 A KR 910002732A KR 910021472 A KR910021472 A KR 910021472A
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- ethylene
- composition
- perfluorobutyl
- composition according
- Prior art date
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/261—Alcohols; Phenols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/28—Organic compounds containing halogen
- C11D7/30—Halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5004—Organic solvents
- C11D7/5018—Halogenated solvents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5036—Azeotropic mixtures containing halogenated solvents
- C11D7/504—Azeotropic mixtures containing halogenated solvents all solvents being halogenated hydrocarbons
- C11D7/5059—Mixtures containing (hydro)chlorocarbons
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5036—Azeotropic mixtures containing halogenated solvents
- C11D7/5068—Mixtures of halogenated and non-halogenated solvents
- C11D7/5077—Mixtures of only oxygen-containing solvents
- C11D7/5086—Mixtures of only oxygen-containing solvents the oxygen-containing solvents being different from alcohols, e.g. mixtures of water and ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/50—Solvents
- C11D7/5036—Azeotropic mixtures containing halogenated solvents
- C11D7/5068—Mixtures of halogenated and non-halogenated solvents
- C11D7/509—Mixtures of hydrocarbons and oxygen-containing solvents
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
- C23G5/02803—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons containing fluorine
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/263—Ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/264—Aldehydes; Ketones; Acetals or ketals
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/26—Organic compounds containing oxygen
- C11D7/266—Esters or carbonates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/22—Organic compounds
- C11D7/28—Organic compounds containing halogen
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Detergent Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Extraction Or Liquid Replacement (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
내용 없음
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
Claims (18)
- 고체 표면에 대한 세정 또는 건조제로서의 하기 일반식의 (피플루오로알킬) 에틸렌의 용도 :RFCH=CH2( I )〔식중, RF는 탄소수 3∼6의 직쇄 또는 측쇄 퍼플루오로알킬 라디칼을 나타낸다.〕
- 제1항에 있어서, 일반식 ( I )의 화합물이 (n-퍼플루오로부틸) 에틸렌 C4F9CH0CH2인 용도.
- 제1항 또는 2항에 따른 (퍼플루오로알킬) 에틸렌과 알코올, 케톤, 에스테르, 에테르, 아세탈 및 염소화 또는 비염소화 탄화수소로 부터 선택된 하나 이상의 유기 용매의 혼합물로 구성됨을 특징으로 하는 고체 표면 세정용 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 85∼98중량% 및 메탄올 2∼15중량%을 포함하는 조성물.
- 제4항에 있어서, (n-퍼플루오로부틸) 에틸렌 90∼95중량% 및 메탄올 5∼10중량%을 포함하는 조성물.
- 제4항에 있어서, 표준 대기압하에 46.3℃에서 비등하는 공비 혼합물의 형태인 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 91∼98중량% 및 이소프로판올 2∼9중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 41∼51중량%및 메틸렌 클로라이드 49∼59중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 89∼97중량%및 트리클로로에틸렌 3∼11중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 83∼90중량%및 1,3-디옥솔란 10∼17중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 84.8∼97.8중량%, 메탄올 2∼15중량%및 메틸 아세테이트 0.2∼2.2중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 90∼98중량%, 이소프로판올 1∼9중량%및 1,3-디옥솔란 1∼7중량%을 포함하는 조성물.
- 제3항에 있어서, (n-퍼플루오로부틸) 에틸렌 90.95∼97.95중량%, 이소프로판올 2∼9중량%및, 1,1-디메톡시에탄 0.05∼1중량%을 포함하는 조성물.
- 제3항 내지 13항중 어느 한 항에 있어서, 하나 이상의 안정화제를 추가로 포함하는 조성물.
- 제14항에 있어서, 안정화제가 니트로알칸, 알킬렌 옥사이드 또는 상기 화합물들의 혼합물임을 특징으로 하는 조성물.
- 제14항 또는 15항에 있어서 안정화제의 비율이 조성물의 총 중량의 0.01∼5%임을 특징으로 하는 조성물.
- 제1항 또는 2항에 따른 (퍼플루오로알킬) 에틸렌과 하나 이상의 표면 활성제의 혼합물로 구성됨을 특징으로 하는 고체 표면 건조용 조성물.
- 제17항에 있어서, 표면 활성제의 함량의 0.01∼5중량% 바람직하게는 0.1∼3중량%인 조성물.※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9002011 | 1990-02-20 | ||
FR9002011A FR2658532B1 (fr) | 1990-02-20 | 1990-02-20 | Application des (perfluoroalkyl)-ethylenes comme agents de nettoyage ou de sechage, et compositions utilisables a cet effet. |
Publications (2)
Publication Number | Publication Date |
---|---|
KR910021472A true KR910021472A (ko) | 1991-12-20 |
KR930007225B1 KR930007225B1 (ko) | 1993-08-04 |
Family
ID=9393900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019910002732A KR930007225B1 (ko) | 1990-02-20 | 1991-02-20 | 세정 또는 건조제로서의 (퍼플루오로알킬)에틸렌의 용도, 및 이 목적을 위해 사용가능한 조성물 |
Country Status (13)
Country | Link |
---|---|
US (1) | US5302212A (ko) |
EP (1) | EP0443911B1 (ko) |
JP (1) | JPH0615003B2 (ko) |
KR (1) | KR930007225B1 (ko) |
AT (1) | ATE117362T1 (ko) |
AU (1) | AU635387B2 (ko) |
CA (1) | CA2035687C (ko) |
DE (1) | DE69106740T2 (ko) |
FI (1) | FI98827C (ko) |
FR (1) | FR2658532B1 (ko) |
IE (1) | IE68777B1 (ko) |
NO (1) | NO176673C (ko) |
PT (1) | PT96811B (ko) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5458800A (en) * | 1990-02-20 | 1995-10-17 | Societe Atochem | Use of (perfluoroalkyl) ethylenes as cleaning or drying agents, and compositions which can be used for this purpose |
US5531916A (en) * | 1990-10-03 | 1996-07-02 | E. I. Du Pont De Nemours And Company | Hydrofluorocarbon cleaning compositions |
EP0525266B1 (fr) * | 1991-07-31 | 1994-09-14 | Elf Atochem S.A. | Composition à base de (N. perfluorobutyl)-éthylène pour le nettoyage de surfaces solides |
FR2694942B1 (fr) * | 1992-08-21 | 1994-10-14 | Atochem Elf Sa | Composition à base de 1,1,1,3,3-pentafluorobutane et de chlorure de méthylène, pour le nettoyage et/ou le séchage de surfaces solides. |
JP3123695B2 (ja) * | 1993-01-22 | 2001-01-15 | キヤノン株式会社 | 混合溶剤組成物、及びそれを利用する洗浄方法と洗浄処理装置 |
JP3390245B2 (ja) * | 1993-06-01 | 2003-03-24 | 富士通株式会社 | 洗浄液及び洗浄方法 |
US5482564A (en) * | 1994-06-21 | 1996-01-09 | Texas Instruments Incorporated | Method of unsticking components of micro-mechanical devices |
FR2731436B1 (fr) * | 1995-03-09 | 1997-04-30 | Atochem Elf Sa | Utilisation d'hydrofluoroalcenes comme agents de nettoyage, et compositions utilisables a cet effet |
US6372705B1 (en) | 1995-03-24 | 2002-04-16 | Bayer Corporation | Azeotropic compositions of perfluorohexane and hydrocarbons having 5 carbon atoms and the use thereof in the production of foams |
US5614565A (en) * | 1995-03-24 | 1997-03-25 | Bayer Corporation | Azeotropic compositions of perfluorohexane and hydrocarbons having 6 carbon atoms and the use thereof in the production of foams |
US6358908B1 (en) | 1995-03-24 | 2002-03-19 | Bayer Corporation | Azeotropic compositions of 1,3-dioxolane and hydrocarbons having 5 or 6 carbon atoms and the use thereof in the production of foams |
JPH08330266A (ja) * | 1995-05-31 | 1996-12-13 | Texas Instr Inc <Ti> | 半導体装置等の表面を浄化し、処理する方法 |
FR2766837A1 (fr) * | 1997-07-31 | 1999-02-05 | Atochem Elf Sa | Compositions azeotropiques a base de (n.perfluorohexyl) ethylene pour le traitement de surfaces solides |
US6793840B2 (en) * | 2000-12-22 | 2004-09-21 | E. I. Du Pont De Nemours And Company | Azeotrope mixtures with perfluorobutylethylene |
DE60033199T2 (de) * | 2000-12-22 | 2007-11-15 | E.I. Du Pont De Nemours And Co., Wilmington | Azeotrope mischungen mit perfluorbutylethylen |
DK2258404T3 (da) * | 2002-10-25 | 2017-11-13 | Honeywell Int Inc | Fremgangsmåde til sterilisering ved anvendelse af sammensætninger, der indeholder fluorsubstituerede olefiner |
US7745369B2 (en) * | 2003-12-19 | 2010-06-29 | Shell Oil Company | Method and catalyst for producing a crude product with minimal hydrogen uptake |
US7153448B2 (en) * | 2004-05-26 | 2006-12-26 | E.I. Du Pont De Nemours And Company | 1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone compositions comprising a hydrofluorocarbon and uses thereof |
EP1874887A1 (en) * | 2005-04-26 | 2008-01-09 | E.I. Dupont De Nemours And Company | Heat transfer and refrigerant compositions comprising 3,3,4,4,5,5,6,6,6-nonafluoro-1-hexene and a hydrofluorocarbon |
US7553985B2 (en) * | 2005-11-02 | 2009-06-30 | E.I. Du Pont De Nemours And Company | Fluorinated surfactants |
JP4885233B2 (ja) * | 2005-11-10 | 2012-02-29 | イー・アイ・デュポン・ドウ・ヌムール・アンド・カンパニー | 組成物、燃焼防止組成物、燃焼防止及び/又は消火方法、燃焼防止システム及び生産方法 |
US7498296B2 (en) * | 2006-02-28 | 2009-03-03 | E. I. Dupont De Nemours And Company | Azeotropic compositions comprising fluorinated compounds for cleaning applications |
US8021490B2 (en) * | 2007-01-04 | 2011-09-20 | Eastman Chemical Company | Substrate cleaning processes through the use of solvents and systems |
BR122018074418B1 (pt) * | 2007-06-12 | 2019-03-26 | E. I. Du Pont De Nemours And Company | Composição e processo para produzir refrigeração |
EP2356086A2 (en) * | 2008-11-13 | 2011-08-17 | Solvay Fluor GmbH | Hydrofluoroolefins, manufacture of hydrofluoroolefins and methods of using hydrofluoroolefins |
KR101753621B1 (ko) * | 2008-12-17 | 2017-07-19 | 허니웰 인터내셔널 인코포레이티드 | 세척 조성물 및 방법 |
EP4098729A1 (en) | 2021-06-01 | 2022-12-07 | Cipelia | Non-flammable, volatile and aqueous cleaning composition |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2551639A (en) * | 1947-07-22 | 1951-05-08 | Socony Vacuum Oil Co Inc | Reaction of olefins and halogenated alkanes |
US3389187A (en) * | 1964-04-27 | 1968-06-18 | Dow Chemical Co | Perfluoroisobutylene dimer |
FR1560544A (ko) * | 1968-01-31 | 1969-03-21 | ||
US3911035A (en) * | 1971-05-24 | 1975-10-07 | Pennwalt Corp | Novel hexafluorohexenes |
US3907576A (en) * | 1972-02-22 | 1975-09-23 | Ciba Geigy Corp | Compositions containing werner complexes of chromium and fluorinated carboxylic acids |
US5059728A (en) * | 1990-06-29 | 1991-10-22 | Allied-Signal Inc. | Partially fluorinated alkanes having a tertiary structure |
US5037573A (en) * | 1990-10-03 | 1991-08-06 | E. I. Du Pont De Nemours And Company | Binary azeotropic compositions of 1,1-dichloro-1-fluoroethane and n-perfluorobutylethylene |
US5064559A (en) * | 1990-10-11 | 1991-11-12 | E. I. Du Pont De Nemours And Company | Binary azeotropic compositions of (CF3 CHFCHFCF2 CF3) with methanol or ethanol or isopropanol |
US5064560A (en) * | 1990-10-11 | 1991-11-12 | E. I. Du Pont De Nemours And Company | Ternary azeotropic compositions of 43-10mee (CF3 CHFCHFCH2 CF.sub. |
US5076956A (en) * | 1990-11-29 | 1991-12-31 | E. I. Du Pont De Nemours And Company | Compositions of octafluorotrifluoromethylpentane and nonafluorotrifluoromethylpentane and use thereof for cleaning solid surfaces |
-
1990
- 1990-02-20 FR FR9002011A patent/FR2658532B1/fr not_active Expired - Lifetime
-
1991
- 1991-02-05 CA CA002035687A patent/CA2035687C/fr not_active Expired - Fee Related
- 1991-02-12 DE DE69106740T patent/DE69106740T2/de not_active Expired - Fee Related
- 1991-02-12 AT AT91400353T patent/ATE117362T1/de not_active IP Right Cessation
- 1991-02-12 AU AU70989/91A patent/AU635387B2/en not_active Ceased
- 1991-02-12 EP EP91400353A patent/EP0443911B1/fr not_active Expired - Lifetime
- 1991-02-14 NO NO910596A patent/NO176673C/no unknown
- 1991-02-19 IE IE56091A patent/IE68777B1/en not_active IP Right Cessation
- 1991-02-19 PT PT96811A patent/PT96811B/pt not_active IP Right Cessation
- 1991-02-19 FI FI910800A patent/FI98827C/fi active
- 1991-02-20 JP JP3026414A patent/JPH0615003B2/ja not_active Expired - Lifetime
- 1991-02-20 US US07/658,270 patent/US5302212A/en not_active Expired - Fee Related
- 1991-02-20 KR KR1019910002732A patent/KR930007225B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
CA2035687A1 (fr) | 1991-08-21 |
NO910596L (no) | 1991-08-21 |
US5302212A (en) | 1994-04-12 |
FR2658532B1 (fr) | 1992-05-15 |
IE68777B1 (en) | 1996-07-10 |
ATE117362T1 (de) | 1995-02-15 |
CA2035687C (fr) | 1998-05-05 |
AU635387B2 (en) | 1993-03-18 |
EP0443911A1 (fr) | 1991-08-28 |
PT96811A (pt) | 1991-10-31 |
AU7098991A (en) | 1991-08-22 |
FI98827B (fi) | 1997-05-15 |
DE69106740T2 (de) | 1995-08-10 |
KR930007225B1 (ko) | 1993-08-04 |
FI98827C (fi) | 1997-08-25 |
NO176673C (no) | 1995-05-10 |
FI910800A0 (fi) | 1991-02-19 |
EP0443911B1 (fr) | 1995-01-18 |
JPH04227803A (ja) | 1992-08-17 |
FR2658532A1 (fr) | 1991-08-23 |
DE69106740D1 (de) | 1995-03-02 |
FI910800A (fi) | 1991-08-21 |
JPH0615003B2 (ja) | 1994-03-02 |
NO176673B (no) | 1995-01-30 |
PT96811B (pt) | 1998-07-31 |
IE910560A1 (en) | 1991-08-28 |
NO910596D0 (no) | 1991-02-14 |
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