EP0378140A2 - Compositions de nettoyage - Google Patents

Compositions de nettoyage Download PDF

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Publication number
EP0378140A2
EP0378140A2 EP90100280A EP90100280A EP0378140A2 EP 0378140 A2 EP0378140 A2 EP 0378140A2 EP 90100280 A EP90100280 A EP 90100280A EP 90100280 A EP90100280 A EP 90100280A EP 0378140 A2 EP0378140 A2 EP 0378140A2
Authority
EP
European Patent Office
Prior art keywords
compositions according
weight
group
compositions
chlorofluorocarbon
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.)
Granted
Application number
EP90100280A
Other languages
German (de)
English (en)
Other versions
EP0378140B1 (fr
EP0378140A3 (fr
Inventor
Hans Buchwald
Boleslaus Raschkowski
Dieter Singer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kali Chemie AG
Original Assignee
Kali Chemie AG
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
Priority claimed from DE3900804A external-priority patent/DE3900804A1/de
Application filed by Kali Chemie AG filed Critical Kali Chemie AG
Publication of EP0378140A2 publication Critical patent/EP0378140A2/fr
Publication of EP0378140A3 publication Critical patent/EP0378140A3/fr
Application granted granted Critical
Publication of EP0378140B1 publication Critical patent/EP0378140B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C11D7/50—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
    • C11D7/22—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
    • C11D7/50—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
    • C11D7/5068—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
    • C11D7/22—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

Definitions

  • the present invention relates to improved cleaning compositions based on chlorofluorocarbons, alkanols and esters from the group of ethyl propionate, methyl propionate and ethyl acetate.
  • mixtures of chlorofluorocarbons (as the main solvent) with a cosolvent in addition to pure chlorinated and / or fluorinated hydrocarbons for industrial cleaning processes or for steam degreasing.
  • Such mixtures can be both non-azeotropic and azeotropic or azeotrope-like.
  • Azeotrope-like is understood here to mean that mixtures boil substantially constantly over a larger concentration range (change in boiling temperature by no more than 5 ° C.) and therefore behave similarly to azeotropes for practical use.
  • the object was therefore to provide new solvent mixtures which overcome the disadvantages of the prior art and which are particularly well suited for removing modern fluxes.
  • compositions according to the invention are achieved by the compositions according to the invention, the uses and methods according to the invention.
  • the invention relates to compositions which are composed of 98.9 to 45% by weight of a chlorofluorocarbon having 1 to 3 C atoms, 1.0 to 50% by weight of an alkanol having 1 to 4 C atoms and Mark 0.1 to 5 wt .-% of an ester from the group ethyl propionate, methyl propionate or ethyl acetate.
  • the chlorofluorocarbon component in the compositions according to the invention can also be a mixture of different chlorofluorocarbons with 1 to 3 carbon atoms.
  • the ester component in the compositions according to the invention can also be a mixture of the above-mentioned esters.
  • compositions are characterized in that they contain 97.5 to 89.0% by weight of the chlorofluorocarbon, 2.0 to 8.0% by weight of the alkanol and 0.5 to 3.0% by weight. -% of the ester included.
  • Preferred chlorofluorocarbons are those which boil at normal pressure in the temperature range from + 20 ° C. to + 120 ° C. These are known as such and can be found, for example, in Kaltron R paperback, Kali-Chemie AG, 6th ed. 1978, pages 14 to 16.
  • chlorofluorocarbons with 1 to 2 carbon atoms which are selected from the group trichlorofluoromethane, tetrachlorodifluoroethane, trichlorotrifluoroethane, tetrachloromonofluoroethane, trichlorodifluoroethane, dichlorotrifluoroethane, dichlorodifluoroethane and dichloromonane.
  • compositions with trichlorofluoromethane, tetrachlorodifluoroethanes, trichlorotrifluoroethanes, dichlorotrifluoroethanes and dichloromonofluoroethanes are preferred.
  • Tetrachlorodifluoroethanes in the sense of the invention are the isomeric chlorofluorocarbons of the empirical formula CCl4F2. It is therefore the chlorofluorocarbon 1,1,2,2-tetrachloro-1,2-difluoroethane (R112) and the isomeric 1,1,1,2-tetrachloro-2,2-difluoroethane (R112a) or their mixtures .
  • Trichlorotrifluoroethanes in the sense of the invention are the isomeric chlorofluorocarbons of the empirical formula C2Cl3F3. It is therefore the chlorofluorocarbon 1,1,2-trichloro-1,2,2-trifluoroethane (R113) and the isomeric 1,1,1-trichloro-2,2,2-trifluoroethane (R113a) or their mixtures .
  • Tetrachloromonofluoroethanes in the sense of the invention are the chlorofluorocarbons bearing a hydrogen atom of the empirical formula C2HCl4F. These are the two non-fully halogenated isomeric chlorofluorocarbons 1,1,2,2-tetrachloro-2-fluoroethane (R121) and 1,1,1,2-tetrachloro-2-fluoroethane (R121a) or their mixtures.
  • Trichlorodifluoroethanes in the sense of the invention are the chlorofluorocarbons bearing a hydrogen atom of the empirical formula C2HCl3F2. So these are the three not fully halogenated isomeric chlorofluorocarbons 1,1,2-trichloro-2,2-difluoroethane (R122), 1,1,2-trichloro-1,2-difluoroethane (R122a) and 1,1,1 -Trichlor-2,2-difluoroethane (R122b) or their mixtures.
  • Dichlorotrifluoroethanes in the sense of the invention are the chlorofluorocarbons bearing a hydrogen atom of the empirical formula C2HCl2F3. These are the three non-fully halogenated isomeric chlorofluorocarbons 1,1-dichloro-2,2,2-trifluoroethane (R123), 1,2-dichloro-1,1,2-trifluoroethane (R123a) and 1,1-dichloro -1,2,2-trifluoroethane (R123b) or their mixtures.
  • Dichlorodifluoroethanes in the sense of the invention are the chlorofluorocarbons carrying a hydrogen atom of the empirical formula C2H2Cl2F2. These are the four non-fully halogenated isomeric chlorofluorocarbons 1,2-dichloro-1,2-difluoroethane (R132), 1,1-dichloro-2,2-difluoroethane (132a), 1,2-dichloro-1,1 -difluoroethane (R132b) and 1,1-dichloro-1,2-difluoroethane (R132c) or their mixtures.
  • Dichloromonofluoroethanes in the sense of the invention are the chlorofluorocarbons bearing a hydrogen atom of the empirical formula C2H3Cl2F. It is therefore the three not fully halogenated isomeric chlorofluorocarbons 1,2-dichloro-1-fluoroethane (R141), 1,1-dichloro-2-fluoroethane (R141a) and 1,1-dichloro-1-fluoroethane (R141b) and their mixtures.
  • compositions contain trichlorofluoromethane (R11), 1,1,2,2-tetrachloro-1,2-difluoroethane (R112), 1,1,2-trichloro-1,2,2-trifluoroethane (R113), 1 as the chlorofluorocarbon , 1,2,2-tetrachloro-2-fluoroethane (R121), 1,1,2-trichloro-2,2-difluoroethane (R122), 1,1-dichloro-2,2,2-trifluoroethane (R123), 1,2-dichloro-1,2-difluoroethane (R132) and 1,1-dichloro-1-fluoroethane (R141b).
  • 1,1,2-trichloro-1,2,2-trifluoroethane has proven particularly favorable. But also compositions with 1,1-dichloro-1-fluoroethane (R141b), 1,1-dichloro-2,2,2-trifluoroethane (R123), 1,1,2,2-tetrachloro-1,2-difluoroethane (R112) or trichlorofluoromethane (R11) give very good results.
  • the alkanols with 1 to 4 carbon atoms used in the compositions according to the invention are selected from the group consisting of methanol, ethanol, i-propanol, n-propanol, n-butanol, sec. Butanol and tert. Butanol, preferably methanol, ethanol and i-propanol. Ethanol proves to be particularly cheap. But methanol or isopropanol are also suitable.
  • compositions according to the invention are distinguished by an azeotrope-like behavior and a content of approximately 94.2% by weight of 1,1,2-trichloro-1,2,2-trifluoroethane and 3.5% by weight. Ethanol and 2.3 wt .-% ethyl acetate.
  • compositions according to the invention are clear solutions at room temperature, to which additives known per se can be added.
  • a group of additives known per se are stabilizers. This group includes those compounds which prevent an undesired reaction of constituents of the composition with one another or with other reaction partners, such as, for example, atmospheric oxygen, water, metal, etc.
  • Known stabilizers are, for example, nitroalkanes, especially nitromethane, nitroethane, alkylene oxides, especially butylene oxide, or branched alkynols such as e.g. 2-methylbutin (3) ol (2).
  • These stabilizers can be used alone or in combination with one another, amounts of from 0.01 to 5% by weight, preferably 0.05 to 1% by weight, based on the mixture as a whole, being very suitable.
  • Another group of additives includes known compounds from the group of corrosion inhibitors, nonionic or ionic emulsifiers, dyes, etc.
  • compositions have numerous uses in the cleaning and / or steam degreasing sector.
  • the object to be cleaned is immersed in one or more stages in liquid and / or vaporous cleaning mixture or sprayed with liquid cleaning mixture.
  • the cleaning effect can be increased in known processes by using elevated temperature and / or ultrasound and / or stirring. Also an improvement of the cleaning effect through mechanical action, e.g. Brushing, known.
  • the electronics industry for soldering processes predominantly uses organic resin fluxes, the excess of which must be removed from printed circuit boards after the soldering process. This is done with organic solvents that are compatible with the printed circuit boards and the electronic parts, ie the solvent must not react with them.
  • the resin fluxes to be removed are mixtures of polar and non-polar compounds and often contain additional activators. Fluorinated hydrocarbons alone, which are not polar, are not effective in removing the polar components of the resins. Mixtures which are known per se and which, in addition to fluorinated hydrocarbons, contain an alcohol are likewise unable to completely remove, in particular, special fluxes containing high activators.
  • compositions of the invention can remove both the polar and the non-polar components and are therefore broadly effective as a resin flux removal agent, particularly those with a high activator content.
  • Compositions of R113 / ethanol / ethyl acetate are particularly suitable for this application, in particular in an azeotrope-like composition of 94.2% / 3.5% / 2.3%.
  • other compositions of R113 for example also with the alcohols methanol or isopropanol and an ester from the group ethyl propionate, methyl propionate or ethyl acetate, show very good results, as well as compositions according to the invention with R141b, R123, R112 or R11.
  • bare and populated (in particular also SMD-tipped) printed circuit boards can be cleaned with the compositions according to the invention, even when using fluxes with a high activator content, without the "white deposits" that are feared when conventional cleaning agents are used.
  • the new compositions according to the invention are also desirable systems for coolants and lubricants because the compositions have a low surface tension, a low viscosity and for the most part a high density of about 1.4 to 1.6 g / cm3 at 20 ° C .
  • the above physical properties are those that are desirable for lubricant applications.
  • the compositions of the invention are desirable when the mixture is used as a lubricant in metalworking machines, such as e.g. when drilling, milling, turning, tapping, punching or the like, where a residue-free surface is required.
  • lubricant additives known per se can also be added.
  • compositions according to the invention make them particularly suitable for cleaning capillary systems.
  • compositions according to the invention can also be used, for example, as follows: - for cleaning small parts or bulk goods (preferably in closed systems), - for stripping paint, - As a special solvent, extraction and / or recrystallization agent in the chemical and pharmaceutical industry.
  • cleaning compositions are already known from DE-OS 29 42 799 which contain 1,1,2-trichloro-1,2,2-trifluoroethane as the chlorofluorocarbon, ethanol as the alkanol and methyl acetate as the ester, and those for removal of resin solder fluxes are used.
  • these methyl acetate-containing compositions does not always guarantee the very high degree of purity which is found in special fields of application, e.g. when cleaning components and printed circuit boards in the electronic industry. Their properties are therefore, in part, just as inadequate as the chlorofluorocarbon / alkanol compositions known in the prior art without an additive such as methyl acetate.
  • compositions according to the invention correspond to the mixtures according to the prior art (experiments 9, 10, 13, 16 to 18, 20 and 23) are superior.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Manufacturing Of Printed Wiring (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lubricants (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP90100280A 1989-01-13 1990-01-08 Compositions de nettoyage Expired - Lifetime EP0378140B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3900804 1989-01-13
DE3900804A DE3900804A1 (de) 1989-01-13 1989-01-13 Reinigungszusammensetzungen
DE3911078A DE3911078A1 (de) 1989-01-13 1989-04-06 Reinigungszusammensetzungen
DE3911078 1989-04-06

Publications (3)

Publication Number Publication Date
EP0378140A2 true EP0378140A2 (fr) 1990-07-18
EP0378140A3 EP0378140A3 (fr) 1991-03-13
EP0378140B1 EP0378140B1 (fr) 1995-04-12

Family

ID=25876731

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90100280A Expired - Lifetime EP0378140B1 (fr) 1989-01-13 1990-01-08 Compositions de nettoyage

Country Status (8)

Country Link
US (1) US5114609A (fr)
EP (1) EP0378140B1 (fr)
JP (1) JPH02289696A (fr)
KR (1) KR920003122B1 (fr)
AT (1) ATE121127T1 (fr)
DE (2) DE3911078A1 (fr)
ES (1) ES2070931T3 (fr)
FI (1) FI94424C (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013969A1 (fr) * 1990-03-13 1991-09-19 E.I. Du Pont De Nemours And Company Compositions azeotropiques ou analogues a l'azeotrope stabilisees a point d'ebullition constant de dichlorotrifluoroethane, 1,1-dichloro-1-fluoroethane comportant du methanol et/ou de l'ethanol
FR2665907A1 (fr) * 1990-08-14 1992-02-21 Atochem Composition nettoyante a base de 1,1-dichloro-1-fluoroethane, de chlorure de methylene et de methanol.
FR2703068A1 (fr) * 1993-03-26 1994-09-30 Atochem Elf Sa Composition de dégraissage à base de solvants fluorés.
CN1034521C (zh) * 1990-10-11 1997-04-09 纳幕尔杜邦公司 1，1，1，2，3，4，4，5，5，5-十氟戊烷和反式-1，2-二氯乙烯与甲醇或乙醇的三元共沸组合物

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1265092A (en) * 1991-07-17 1993-02-23 Church & Dwight Company, Inc. Aqueous electronic circuit assembly cleaner and method
US5938856A (en) * 1997-06-13 1999-08-17 International Business Machines Corporation Process of removing flux residue from microelectronic components
US6071872A (en) * 1998-06-10 2000-06-06 Arnco Corporation Cable cleaning solution comprising a brominated hydrocarbon and an ester
GB2349984A (en) * 1999-03-04 2000-11-15 Ibm Decontamination of electronic cards from copper salts

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2072328A5 (en) * 1969-11-24 1971-09-24 Licentia Gmbh Wash liquids for electrical components - fitted on printed circuits
US3640884A (en) * 1968-10-28 1972-02-08 Union Carbide Corp Azeotropic cleaning solvents based on 1 1 2 2-tetrachloro-1 2-difluoroethane
US3856695A (en) * 1969-08-06 1974-12-24 R Geiss Solvent based detergent
GB2033422A (en) * 1978-10-23 1980-05-21 Ici Ltd Solvent Cleaning Composition
GB2046292A (en) * 1979-03-02 1980-11-12 Ici Ltd Cleaning composition

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4260510A (en) * 1978-10-23 1981-04-07 Imperial Chemical Industries Limited Cleaning composition
JPS5958099A (ja) * 1982-09-27 1984-04-03 ダイキン工業株式会社 洗浄剤組成物
DE3342852C2 (de) * 1982-12-02 1993-10-28 Kali Chemie Ag Fluorchlorkohlenwasserstoff enthaltendes Kühlschmiermittel zur spanenden, trennenden oder abrasiven Bearbeitung von Metallen und Verfahren zu dessen Herstellung
NL189307C (nl) * 1982-12-02 1993-03-01 Kali Chemie Ag Werkwijze voor het verspanend, scheidend of slijpend bewerken van metalen onder toepassing van een koelsmeermiddel en koelsmeermiddel.
DE3335870A1 (de) * 1983-10-03 1985-04-11 Kali-Chemie Ag, 3000 Hannover Verfahren zur umsetzung von fluorwasserstoff mit fettsaeureestern
JPS60126376A (ja) * 1983-12-08 1985-07-05 工業技術院長 柔軟布一時硬化処理方法
JPS6250490A (ja) * 1985-08-29 1987-03-05 Asahi Chem Ind Co Ltd 銀もしくは銀メツキ製品の洗浄方法
JPS6253349A (ja) * 1985-09-02 1987-03-09 Asahi Chem Ind Co Ltd フオトレジスト膜の剥離方法
JPH01128068A (ja) * 1987-11-13 1989-05-19 Asahi Glass Co Ltd レジスト剥離剤
JPH01134356A (ja) * 1987-11-19 1989-05-26 Asahi Glass Co Ltd レジスト現像剤
JPH01136979A (ja) * 1987-11-24 1989-05-30 Asahi Glass Co Ltd 脱脂洗浄剤
JPH01141993A (ja) * 1987-11-30 1989-06-02 Asahi Glass Co Ltd フツ素化炭化水素系共沸様混合物
DE3900804A1 (de) * 1989-01-13 1990-07-19 Kali Chemie Ag Reinigungszusammensetzungen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3640884A (en) * 1968-10-28 1972-02-08 Union Carbide Corp Azeotropic cleaning solvents based on 1 1 2 2-tetrachloro-1 2-difluoroethane
US3856695A (en) * 1969-08-06 1974-12-24 R Geiss Solvent based detergent
FR2072328A5 (en) * 1969-11-24 1971-09-24 Licentia Gmbh Wash liquids for electrical components - fitted on printed circuits
GB2033422A (en) * 1978-10-23 1980-05-21 Ici Ltd Solvent Cleaning Composition
GB2046292A (en) * 1979-03-02 1980-11-12 Ici Ltd Cleaning composition

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991013969A1 (fr) * 1990-03-13 1991-09-19 E.I. Du Pont De Nemours And Company Compositions azeotropiques ou analogues a l'azeotrope stabilisees a point d'ebullition constant de dichlorotrifluoroethane, 1,1-dichloro-1-fluoroethane comportant du methanol et/ou de l'ethanol
FR2665907A1 (fr) * 1990-08-14 1992-02-21 Atochem Composition nettoyante a base de 1,1-dichloro-1-fluoroethane, de chlorure de methylene et de methanol.
EP0474528A1 (fr) * 1990-08-14 1992-03-11 Elf Atochem S.A. Composition nettoyante à base de 1,1-dichloro-1-fluoroéthane, de chlorure de méthylène et de méthanol
CN1034521C (zh) * 1990-10-11 1997-04-09 纳幕尔杜邦公司 1，1，1，2，3，4，4，5，5，5-十氟戊烷和反式-1，2-二氯乙烯与甲醇或乙醇的三元共沸组合物
FR2703068A1 (fr) * 1993-03-26 1994-09-30 Atochem Elf Sa Composition de dégraissage à base de solvants fluorés.
WO1994023007A1 (fr) * 1993-03-26 1994-10-13 Elf Atochem S.A. Composition de degraissage

Also Published As

Publication number Publication date
EP0378140B1 (fr) 1995-04-12
KR920003122B1 (ko) 1992-04-20
US5114609A (en) 1992-05-19
ES2070931T3 (es) 1995-06-16
ATE121127T1 (de) 1995-04-15
EP0378140A3 (fr) 1991-03-13
DE3911078A1 (de) 1990-10-11
DE59008869D1 (de) 1995-05-18
FI94424B (fi) 1995-05-31
FI900193A0 (fi) 1990-01-12
FI94424C (fi) 1995-09-11
KR900011890A (ko) 1990-08-02
JPH02289696A (ja) 1990-11-29

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