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EP0378140B1 - Compositions de nettoyage - Google Patents

Compositions de nettoyage Download PDF

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Publication number
EP0378140B1
EP0378140B1 EP90100280A EP90100280A EP0378140B1 EP 0378140 B1 EP0378140 B1 EP 0378140B1 EP 90100280 A EP90100280 A EP 90100280A EP 90100280 A EP90100280 A EP 90100280A EP 0378140 B1 EP0378140 B1 EP 0378140B1
Authority
EP
European Patent Office
Prior art keywords
weight
compositions according
group
compositions
dichloro
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 - Lifetime
Application number
EP90100280A
Other languages
German (de)
English (en)
Other versions
EP0378140A2 (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

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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
    • C11D7/50—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

  • mixtures of chlorofluorocarbons (as 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 to 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 98.9 to 45% by weight of a chlorofluorocarbon having 1 to 3 carbon atoms, 1.0 to 50% by weight of an alkanol having 1 to 4 carbon 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 carrying a hydrogen atom of the empirical formula C2HCl3F2. These are the three non-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 not 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. It is therefore the four not 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. These are 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 has proven to be particularly cheap. But methanol or isopropanol are also well suited.
  • compositions according to the invention are characterized by an azeotrope-like behavior and a content of approximately 94.2% by weight of 1,1,2-trichloro-1,2,2-trifluoroethane, 3.5% by weight Ethanol and 2.3% by weight of ethyl acetate.
  • 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 reactants, 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 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 and dyes.
  • 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 also contain special activators. Fluorinated hydrocarbons alone, which are not polar, are not effective in removing the polar components of the resins. Mixtures known per se which, in addition to fluorinated hydrocarbons, contain an alcohol are likewise not able to completely remove, in particular, special fluxes containing high activators.
  • compositions of the present 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 easily cleaned with the compositions according to the invention even when using fluxes with a high activator content, without the "white deposits” feared when using the usual cleaning agents.
  • 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, 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.
  • 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 that 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 some cases just as inadequate as the chlorofluorocarbon / alkanol compositions known in the prior art without an additive such as methyl acetate.
  • the new mixtures according to the invention which contain chlorofluorocarbons, alkanols and, as an additive, the esters ethyl propionate, methyl propionate or ethyl acetate have superior cleaning properties and are very suitable for the applications mentioned.
  • the mixtures according to the invention enable new solutions to problems in a wide range of applications.
  • 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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Lubricants (AREA)

Claims (10)

  1. Compositions caractérisées par une teneur de 98,9 à 45 % en poids d'au moins un hydrocarbure fluorochloré comportant 1 à 3 atomes de carbone, 1,0 à 50 % en poids d'un alcanol ayant 1 à 4 atomes de carbone et 0,1 à 5 % en poids d'un ester choisi parmi le propionate d'éthyle, le propionate de méthyle ou l'acétate d'éthyle, ou un mélange des esters précités.
  2. Compositions selon la revendication 1, caractérisées en ce qu'elles contiennent 97,5 à 89,0 % en poids de l'hydrocarbure fluorochloré, 2,0 à 8,0 % en poids de l'alcanol et 0,5 à 3 % en poids de l'ester.
  3. Compositions selon la revendication 1 ou 2, caractérisées en ce que l'hydrocarbure fluorochloré présente par lui-même un point d'ébullition situé entre 20°C et 120°C.
  4. Compositions selon l'une des revendications précédentes, caractérisées en ce qu'un hydrocarbure fluorochloré comportant 1 à 2 atomes de carbone est choisi dans l'ensemble formé par le trichlorofluorométhane, les tétrachlorodifluoroéthanes, les trichlorotrifluoro-éthanes, les tétrachloro-monofluoroéthanes, les trichlorodifluoroéthanes, les dichlorotrifluoroéthanes, les dichloreodifluoroéthanes et les dichloromonofluoroéthanes, avantageusement dans l'ensemble formé par le trichlorofluorométhane, les tétrachlorodifluoroéthanes, les trichlorotrifluoroéthanes, les dichlorotrifluoroéthanes et les dichloromonofluoroéthanes.
  5. Compositions selon l'une des revendications précédentes, caractérisées en ce que l'hydrocarbure fluorochloré comportant un ou deux atomes de carbone est choisi dans l'ensemble formé par le trichlorofluorométhane (R11), le 1,1,2,2-tétrachloro-1,2-difluoréthane (R112), le 1,1,2-trichloro-1,2,2-trifluoro-éthane (R113), le 1,1,2,2-tétrachloro-2-fluoroéthane (R121), le 1,1,2-trichloro-2,2-difluoro-éthane (R122), le 1,1-dichloro-2,2,2-trifluoroéthane (R123), le 1,2-dichloro-1,2-difluoro-éthane (R132), et le 1,1-dichloro-1-fluoro-éthane (R141b).
  6. Compositions selon l'une des revendications précédentes, caractérisées en ce que l'alcanol est choisi dans l'ensemble formé par le méthanol, l'éthanol, l'i-propanol, le n-propanol, le n-butanol, le sec.-butanol et le tert.-butanol, avantageusement parmi le méthanol, l'éthanol et l'i-propanol.
  7. Compositions selon l'une des revendications précédentes, caractérisées par une composition de type azéotrope comportant environ 94,2 % en poids de 1,1,2-trichloro-1,2,2-trifluoro-éthane (R113), 3,5 % en poids d'éthanol et 2,3 % en poids d'acétate d'éthyle.
  8. Compositions selon l'une des revendications précédentes, caractérisées par une teneur supplémentaire en du stabilisant représentant 0,01 à 5 % en poids, avantageusement 0,05 à 1 % en poids, par rapport au mélange total et qui est choisi avantageusement parmi un nitroalcane, un oxyde d'alkylène et/ou un alcynol.
  9. Utilisation des composition selon l'une des revendications précédentes, dans des procédés de nettoyage par immersion et/ou projection par pulvérisaiton ou dans le dégraissage à la vapeur.
  10. Procédé pour nettoyer des surfaces, caractérisé en ce qu'on traite les surfaces, avantageusement les surfaces à nettoyer, de plaques de circuits imprimés, plaques qui sont souillées par du fondant pour soudure ou brasure ou par des résidus de fondant pour soudure ou brasure, par des compostioons selon l'une des revendications 1 à 8.
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
DE3900804A DE3900804A1 (de) 1989-01-13 1989-01-13 Reinigungszusammensetzungen
DE3900804 1989-01-13
DE3911078A DE3911078A1 (de) 1989-01-13 1989-04-06 Reinigungszusammensetzungen
DE3911078 1989-04-06

Publications (3)

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

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7309991A (en) * 1990-03-13 1991-10-10 E.I. Du Pont De Nemours And Company Stabilized constant-boiling, azeotrope or azeotrope-like compositions of dichlorotrifluoroethane; 1,1-dichloro-1-fluoroethane; with methanol and/or ethanol
FR2665907B1 (fr) * 1990-08-14 1994-04-08 Atochem Composition nettoyante a base de 1,1-dichloro-1-fluoroethane, de chlorure de methylene et de methanol.
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.
AU1265092A (en) * 1991-07-17 1993-02-23 Church & Dwight Company, Inc. Aqueous electronic circuit assembly cleaner and method
FR2703068B1 (fr) * 1993-03-26 1995-05-12 Atochem Elf Sa Composition de dégraissage à base de solvants fluorés.
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

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US3640884A (en) * 1968-10-28 1972-02-08 Union Carbide Corp Azeotropic cleaning solvents based on 1 1 2 2-tetrachloro-1 2-difluoroethane
BE754318A (fr) * 1969-08-06 1971-01-18 Geiss Chem Fab Agent de nettoyage comportant un solvant
DE1958875C3 (de) * 1969-11-24 1978-04-13 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Waschflüssigkeit zur Reinigung der Oberfläche gedruckter Schaltungen
GB2033422B (en) * 1978-10-23 1982-10-13 Ici Ltd Solvent cleaning composition
US4260510A (en) * 1978-10-23 1981-04-07 Imperial Chemical Industries Limited Cleaning composition
GB2046292B (en) * 1979-03-02 1983-04-20 Ici Ltd 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

Also Published As

Publication number Publication date
EP0378140A2 (fr) 1990-07-18
DE59008869D1 (de) 1995-05-18
KR920003122B1 (ko) 1992-04-20
FI900193A0 (fi) 1990-01-12
DE3911078A1 (de) 1990-10-11
KR900011890A (ko) 1990-08-02
EP0378140A3 (fr) 1991-03-13
FI94424C (fi) 1995-09-11
US5114609A (en) 1992-05-19
JPH02289696A (ja) 1990-11-29
FI94424B (fi) 1995-05-31
ES2070931T3 (es) 1995-06-16
ATE121127T1 (de) 1995-04-15

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