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EP1191095A2 - Procédé de nettoyage d'objets - Google Patents

Procédé de nettoyage d'objets Download PDF

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Publication number
EP1191095A2
EP1191095A2 EP01128155A EP01128155A EP1191095A2 EP 1191095 A2 EP1191095 A2 EP 1191095A2 EP 01128155 A EP01128155 A EP 01128155A EP 01128155 A EP01128155 A EP 01128155A EP 1191095 A2 EP1191095 A2 EP 1191095A2
Authority
EP
European Patent Office
Prior art keywords
cleaning
liquid
organic component
azeotropic
groups
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
EP01128155A
Other languages
German (de)
English (en)
Other versions
EP1191095B1 (fr
EP1191095A3 (fr
Inventor
Oskar K. Wack
Martin Hanek
Karsten Lessmann
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.)
Drok Wack Chemie GmbH
Original Assignee
Drok Wack Chemie GmbH
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
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Priority claimed from DE19609119A external-priority patent/DE19609119C2/de
Application filed by Drok Wack Chemie GmbH filed Critical Drok Wack Chemie GmbH
Priority to DE29724628U priority Critical patent/DE29724628U1/de
Publication of EP1191095A2 publication Critical patent/EP1191095A2/fr
Publication of EP1191095A3 publication Critical patent/EP1191095A3/fr
Application granted granted Critical
Publication of EP1191095B1 publication Critical patent/EP1191095B1/fr
Anticipated expiration legal-status Critical
Revoked 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
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3227—Ethers thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
    • B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
    • 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
    • C11D7/5031—Azeotropic mixtures of non-halogenated solvents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2230/00—Other cleaning aspects applicable to all B08B range
    • B08B2230/01—Cleaning with steam

Definitions

  • the present invention relates to a method for cleaning objects and Materials made of metal, glass, ceramics, plastic (s) or composites thereof or Textiles.
  • the invention further relates to a cleaning liquid.
  • Cleaning processes in which a manufactured by heating a cleaning-active liquid Steam is brought into contact with the objects to be cleaned
  • objects such as metallic objects, industrially manufactured items, such as printed circuit boards, clothing, etc. of unwanted contaminants such as greases, lapping and polishing pastes, soldering pastes, adhesives, Mixtures of inorganic (e.g. salt-like) and organic (e.g. dirt, etc. from fat residues.
  • inorganic e.g. salt-like
  • organic e.g. dirt, etc. from fat residues.
  • chlorinated hydrocarbons up to chlorinated hydrocarbons have recently been used for such cleaning tasks. This are now due to their lack of environmental compatibility, especially because of their Ozone depletion potential, their carcinogenicity and their toxic effects prohibited or at least can only be used under very strict conditions.
  • the invention has for its object to provide a cleaning method that under Achieving a good cleaning effect in environmentally friendly and to be cleaned Objects can be carried out gently, in particular mixtures of inorganic and organic dirt can be removed efficiently at the same time can.
  • the invention is further based on the object of providing a cleaning liquid with which the method according to the invention can be carried out.
  • the second object is achieved with the features of claim 7.
  • the requirements 8 to 12 characterize advantageous further features of the cleaning liquid according to the invention.
  • Azeotropic preparations which can be used according to the invention as cleaning-active liquids first have the advantage that their liquid phase due to the water content pigment and dirt with ionic components, for example salts, dissolves well if the azeotropic preparation used as a cleaning active liquid in the liquid state comes into contact with the objects to be cleaned.
  • the lipophilic groups containing Molecules of the at least one further component which are preferably per se at ambient conditions or is also a liquid at low treatment temperatures, ensure good fat-dissolving power of the azeotropic preparation.
  • azeotropic preparation used as a cleaning active liquid is heated, go because of their azeotropic character (because of the definition of "azeotrope”: see Römpps Chemie Lexikon, 9th edition (1989), page 323) both water and the other (n) Component (s) in a composition corresponding to the special azeotrope in the vapor phase over.
  • azeotrope because of the definition of "azeotrope”: see Römpps Chemie Lexikon, 9th edition (1989), page 323
  • the steam is not flammable because of its high water content is.
  • Protective measures in this regard for carrying out the inventive method Device used in the process are superfluous.
  • the flash point of the Vapor if such exists at all, lies above that in such a cleaning process normally occurring temperatures, but at least above the boiling temperature the liquid and advantageously above about 200 ° C.
  • a temperature above 200 ° C Flash point is particularly advantageous because of the implementation protective measures to be taken in the cleaning process are less extensive than for Use of cleaning-active liquids with lower flash points.
  • At least azeotropes present in vapor form in part of the process according to the invention Preparation can be done either on the objects to be cleaned or by lowering the Temperature are condensed to the liquid phase, so that complex measures to Protection of the atmosphere surrounding the device for carrying out the method, as they are required in conventional processes, can largely be avoided.
  • An additional advantage of the method according to the invention is that it is active as a cleaning agent Liquid used azeotropic preparation because of its extensive use Recondensation is hardly used. So a closed cycle can be created be in which the azeotropic preparation used as a cleaning active liquid does not have to be replenished or only in negligibly small amounts. This will additionally supported by the fact that the liquid used according to the invention as a cleaning-active liquid azeotropic preparation can be free of surfactants, which can be found in a filtration of the active cleaning liquid for dirt separation in conventional processes on the Remove filter surface and require re-sharpening for conventionally used solutions.
  • the method according to the invention also makes complexes Types of dirt such as dried-up body fluids or other everyday occurrences Contamination caused by rain or snow Dirt etc. reliably removed from the objects to be cleaned.
  • the method according to the invention is not restricted to closed systems. It can for example in the form of an open steam jet cleaning.
  • the liquid and the vapor formed from it by heating must not be toxic or ozone-depleting, nor must it pose a water hazard if the preparation accidentally gets into the environment.
  • Water-soluble, homogeneous azeotrope-forming components or water-insoluble, heterogeneous azeotrope-forming components are suitable.
  • the objects to be cleaned at least once with a steam of the azeotropic Preparation contact and during the duration of the contact the steam to allow the azeotropic preparation to condense on the objects to be cleaned.
  • the objects to be cleaned can be used once or several times the liquid azeotropic preparation are brought into contact, for example by immersion, Spraying, sprinkling or comparable, known per se from the prior art Procedure of exposure to a liquid. Then you can clean them Objects with the azeotropic preparation in the form of their vapor once or also be brought into contact several times.
  • the azeotropic vapor condenses regularly Preparation on the objects to be cleaned and tears off residues the contaminants removed with the objects to be cleaned.
  • the inventive method are carried out in such a way that the cleaning objects at least once, but preferably several times, with one Contact vapor of the azeotropic preparation.
  • the steam also condenses here for the duration of the contact on the objects to be cleaned and thereby removes the Impurities.
  • an azeotropic preparation in the form of a mixture from water and at least one other component with molecules with hydrophilic and lipophilic groups are used, the further component (s) and the water in the phase transition liquid phase / vapor phase form an azeotrope and the azeotrope Azeotropic with miscibility gap at a temperature between 0 ° C and the temperature of the Phase transition is liquid phase / vapor phase at normal pressure. It was surprising found that azeotropes with mixture gaps have particularly advantageous cleaning properties exhibit. An azeotrope with a miscibility gap is particularly preferred a temperature in the range of 20 ° C and 110 ° C at normal pressure.
  • At normal pressure is understood to mean an atmospheric pressure (about 1 atm; about 10 5 Pa).
  • azeotropic preparations which are used as cleaning-active liquid in the inventive methods can be used at low temperatures of for example 20 to 25 ° C are clear.
  • the components are complete resolved into one another.
  • the separated at elevated temperature existing phases can be carried out by suitable process steps, preferably for example by sonicating with ultrasound, by moving intensively when pumping or stirring etc., into a milky-looking emulsion.
  • This emulsion has discontinuous Droplets of the organic component (s) in a continuous aqueous Phase on.
  • the emulsion has excellent fat-dissolving power due to its content on organic components (with molecules with lipophilic groups), but dissolves due to the continuous water phase also water-soluble, e.g. ionic, impurities, for example salts. If the temperature of the azeotropic preparation is further increased this goes into the vapor phase, in which the components in the special, for the respective azeotropic typical composition.
  • organic components are the most homogeneous Form azeotropes with water, for use as organic components in the azeotropic preparations preferred for performing the method according to the present Invention can be used.
  • the invention is not based on the preferred azeotropes Connections limited.
  • the organic components of the azeotropic preparations that are in the the method according to the present invention can be chosen from organic compounds belonging to the groups alcohols, glycols, amines, ethers, Glycol ethers, esters, ketones and amino alcohols as well as N-heterocycles or organic acids belong.
  • R 1 and R 3 are hydrogen, methyl, ethyl, n-propyl, i-propyl, n-butyl, sec-butyl, i-butyl, tert-butyl, n-pentyl, n-hexyl, n-octyl, furfuryl-2, tetrahydrofuryl-2, hydroxy, methoxy, ethoxy and propoxy.
  • organic components that are used alone or in groups of several mentioned compounds together in azeotropic preparations of the cleaning active Liquid that can be used are selected from propylene glycol ether; dipropylene glycol monomethyl ether; Dipropylene glycol mono-n-propyl ether; tripropylene; 3-methoxy-3-methylbutanol; furfuryl alcohol; tetrahydrofurfuryl; 1-aminobutanol-2; monoisopropanolamine; 2-amino-2-methylpropanol-1; 2-amino-2-methyl propanediol-1,3; 3- (aminomethyl) pyridine; Ethanolamine; furfuryl; methyl; isopropyl; aminoacetaldehyde; 4-aminomorpholine; 1-methylimidazole; 1,2-dimethylimidazole; 1-vinylimidazole; 1,4-diazabicyclo [2.2.2] octane (DABCO); 1,5-
  • the cleaning-active At least one liquid for the process according to the invention is not self-evaporating cleaning booster. This should preferably be distill with the azeotropic preparation.
  • cleaning evaporators which do not evaporate independently are known to the person skilled in the art from the prior art and therefore require no further listing at this point.
  • the cleaning-active liquid has at least one Add corrosion protection additive.
  • Add corrosion protection additives are particularly advantageous if objects made of non-ferrous metals or light metals are to be cleaned.
  • aluminum parts can be cleaned excellently with an azeotropic preparation, which includes 1-methylimidazole. This acts as an inhibitor.
  • Cleaning parts out Copper can also advantageously with azeotropes comprising 1-methylimidazole Preparations are carried out. This lightens the surface.
  • the above-mentioned compound can also be used for other corrosion protection additives and inhibitors are added, as known to the person skilled in the art from the prior art are.
  • the organic component is preferably a compound that is selected is from the group dipropylene glycol monomethyl ether; Dipropylene glycol mono-n-propyl ether; tripropylene; 3-methoxy-3-methylbutanol; furfuryl alcohol; tetrahydrofurfuryl; 1-aminobutanol-2; furfuryl; Methyl lactate and isopropyl lactate.
  • Azeotropic preparations are water and an organic component in relative terms Amounts of (100 - x)% by weight: x% by weight.
  • X is in the range of 0 ⁇ x ⁇ 35, preferably in the range 3 ⁇ x ⁇ 25, particularly preferably in the range 4 ⁇ x ⁇ 15.
  • the mixing ratio of water is set and the further component (s) in the azeotropic preparation essentially on the Ratio present in the vapor from the liquid azeotropic preparation arises when heated.
  • the invention comprises Process for cleaning objects the step that one as cleaning-active Liquid uses an azeotropic preparation of water and two organic components.
  • An azeotropic preparation is particularly preferred as the cleaning-active liquid from water, dipropylene glycol mono-n-propyl ether and another organic component used.
  • azeotropic preparation used as a cleaning-active liquid be included, for example at least one which is not self-evaporating, particularly preferred with the azeotropic preparation of distilling cleaning boosters as such is known from the prior art and has already been mentioned above, and / or at least one (with particular preference distilling with the azeotropic preparation) corrosion protection additive or corrosion protection inhibitor, as it also as such or such is known from the prior art and has already been mentioned above.
  • DABCO octane
  • the organic compounds mentioned can be used alone or in combination with one another be used.
  • a further organic component from the Group used acetic acid, hydroxyacetic acid, formic acid and butyric acid can be used.
  • the acids mentioned can be used alone or in combination with one another or with others, for example the organic components mentioned above can be used.
  • the cleaning active is used Liquid an azeotropic preparation of water, a glycol ether (preferred Dipropylenglykolmono-n-propylether) and another organic component in relative amounts of 90% by weight: (10 - y)% by weight: y% by weight, where y is in the range of 0 ⁇ y 5 5, particularly preferably in the range from 0 ⁇ y 2 2.
  • a device in which the method according to the invention can be carried out is shown in the attached figure shows schematically: a storage tank 2 with a separation chamber 4 and an overflow chamber 6 is connected via a feed pump 8 and a heating device 10 a cleaning device 12 connected.
  • a line leads from the bottom of the cleaning device 12 to a filter device 16.
  • the filter device 16 is connected via a line with a feed pump 18 to the top the separation chamber 4 connected.
  • Another line leads from the filter device 16 via a vacuum pump 20 through a condenser 22 and a cooler 24 back to Separation chamber 4.
  • a line leads from the overflow chamber 6 via a feed pump 26 through a Heat exchanger 28 into a distillation device 30 and from there into the cleaning device 12 or back to the storage tank 2.
  • a feed line 32 leads into the storage tank 2 for charging the storage tank 2 with cleaning-active Liquid.
  • the storage tank 2 further contains a device, not shown for removing sludge that settles in the separation chamber 4.
  • a ventilation line leads into the normally tightly closed cleaning device 12 34th
  • Embodiment first a liquid cleaning, in which the feed pump 8 is put into operation and cleaning-active liquid, which may be in the heating device 10 can be tempered, the cleaning device 12 is supplied.
  • the Cleaning device 12 is an immersion bath of the rotating items to be cleaned and / or spraying the items to be cleaned with liquid.
  • the liquid is pumped through the feed pump 18 withdrawn from the cleaning device 12 through the filter device 16 and fed to the separation chamber 4.
  • the filter device 16 predominantly settles inorganic dirt that is drawn off. In the separation chamber 4 settles mainly greasy dirt, which is also removed.
  • liquid cleaning stage described by way of example is followed by rinsing under the same conditions with active cleaning liquid from the tank 6.
  • a steam cleaning stage or steam rinsing stage in which the feed pump 26 is put into operation so that the cleaning-active liquid in the distillation device 30 heated and converted into steam. Due to the azeotropic character the vapor used in the azeotropic preparation used as the cleaning active liquid a predetermined content of water and the further component or the others Components.
  • the liquid azeotropic preparation is preferably already made of it Components put together, as does the content of the corresponding components in the vapor phase.
  • the steam arrives in the cleaning device 12 in intensive contact with the material to be cleaned, taking at least part of the steam condensed.
  • the condensate is removed by means of the feed pump 18 after flowing through the filter device 16 fed to the deposition chamber.
  • Circulating air drying advantageously follows steam cleaning or steam rinsing or vacuum drying.
  • steam is sucked off by means of the vacuum pump 20, whereby in the cleaning device 12 forming condensate flows through the filter device 16.
  • the one with the condensate is mixed with steam after flowing through the condenser 22 and Cooler 24 is supplied to the storage tank 2 as liquid again.
  • the separation chamber 4 is on the ventilation line 34 ventilated, and the cleaned good can be removed.
  • the objects to be treated are in a much better condition after the treatment than after treatment in a conventional process, i.e. using more common organic solvent for the cleaning steps under identical conditions.
  • organic dirt including Lipophilic or oil-like or fat-like substances is removed, but also all inorganic dirt, especially inorganic salts from sweat, color pigments etc.
  • the treated objects have no unpleasant smell and show an excellent appearance.
  • azeotropic preparations with a miscibility gap are surprising good and conventional preparations clearly superior cleaning behavior.
  • azeotropic preparations with a miscibility gap in the case of Treatment in the liquid phase of the objects to be cleaned with an azeotropic preparation brought into contact, which is in a state in which the components of the azeotropic preparation are present in separate or at least partially separate phases.
  • the liquid azeotropes present in the phase separation state Preparations treated with ultrasound or pumped intensively or stirred, see above that a milky emulsion of the azeotropic preparation forms. This emulsion dissolves not only good fatty or oily components, but also ionic or salt-like impurities.
  • the azeotropic preparation - as described above - is heated, and a steam is produced in which the components are present in the proportions, which are determined by the characteristic azeotropic properties.
  • the steam condenses at least partially on the objects to be cleaned, and it turns the same milky emulsion like in the liquid phase. In this case, too, will be excellent Fat and salt dissolving power observed.
  • the latter embodiment of the method according to the invention is particularly advantageous for cleaning metal parts.
  • azeotropes from the lapping and polishing pastes from metal parts.
  • an azeotropic preparation mixed with acidic additives is used as a cleaning active liquid. The cleaning is done in the above Single-chamber system and can be carried out continuously or in a batch process.
  • SMD Survace Mount Devices
  • SMD Survace Mount Devices
  • the adhesive is usually applied using dispenser systems or templates, before the circuit boards are attached. Misprinted / dispensed PCBs or templates.
  • azeotropic preparations achieve cleaning results that those with significantly exceed conventional solvents such as butyl acetate or isopropanol. moreover are protective measures (for example against explosions in the case of those who are at risk Solvents) superfluous.
  • the Cleaning is carried out by spraying, spray rinsing and drying the objects to be cleaned preferably in the immersion process with ultrasound (cleaning stage), rinsing with or without Ultrasound (rinsing stage) and drying. Cleaning is preferred at one temperature performed in the range of 40 to 60 ° C, but is not on this temperature range limited. Especially when treating the objects to be cleaned in the cleaning stage with the steam of the azeotropic preparation, the temperature can be significantly higher, for example are also above 100 ° C.
  • Azeotropic preparations are particularly preferred for cleaning processes according to the invention used according to Table I below.
  • Ratios of organic components O.K.
  • water the boiling points of each azeotropic preparation as well as the temperatures at which to be cleaned Objects are treated with the respective azeotropic preparation as an example can.
  • the invention is not limited to the specified conditions Components and treatment temperatures limited.
  • azeotropes with a mixture gap three-component mixtures of water, dipropylene glycol mono-n-propyl ether and amine compounds or N-heterocyclic compounds or organic acids according to Table II below are particularly preferably used.
  • An exemplary, but not restrictive, composition of the azeotropes is as follows: water (90% by weight), dipropylene glycol mono-n-propyl ether (10% by weight), y% by weight of the compounds given in Table II.
  • Organic component y (% by weight) Boiling temperature (° C) 1-aminobutanol-2 0.3 101 monoisopropanolamine 0.8 100 2-amino-2-methyl-propanol-1 1.3 102 2-amino-2-methyl-1,3-propanediol 1.5 101 3- (aminomethyl) pyridine 0.16 101 ethanolamine 0.3 104 Aminoacetaldehyde dimethyl 2.4 101 3.4 4.2 4-aminomorpholine 0.4 101 1-methylimidazole 0.1 101 1,2-dimethylimidazole 0.1 100-102 1-vinylimidazole 0.3 101 DABCO 0.03 101-103 0.08 0.1 1,5-diazabicyclo- [4.3.0] non-5-ene 0.02 100-103 1,8-diazabicyclo- [5.4.0] undec-7-ene 0.02 101-103 Acetic acid (80%) 1.5 100-101 hydroxyacetic 0.5 100-101 formic acid 1.5 100-101 butyric 1.2 100-101
  • Table II also shows the boiling point (° C) of water, dipropylene glycol mono-n-propyl ether and the specified compounds formed azeotropic preparation.
  • the drum of the cleaning device 12 described above was also to be cleaned Material loaded.
  • the material consisting of textiles was in the first step under Liquid cleaning conditions treated with azeotropic preparations at elevated temperatures.
  • the azeotropic preparations and the respective treatment temperatures are in of Table I above.
  • the material was azeotroped while moving in the warm Preparation immersed.
  • the warm azeotropic preparation was in a closed Circulated from the drum of the cleaning device 12 through a filter device 16 and fed to the separation chamber 4.
  • the filter device 16 predominantly settled inorganic dirt (salts) that has been removed.
  • In the deposition chamber 14 mainly fatty dirt settled, which was also removed.
  • the first treatment step was followed by a second treatment step, which is also under Liquid treatment conditions was performed.
  • Fresh azeotropic preparation (composition: see table I; in each run had the azeotropic preparation of the second Treatment step same composition as that of the first step) was the Drum of the cleaning device 12 supplied at an elevated temperature.
  • the material was in a second closed circuit from the drum of the cleaning device 12 fed to the separating chamber 4 via a filter device 16.
  • the deposition of inorganic and organic substances was carried out in the same way as in the first treatment step.
  • the second treatment step was followed by a third treatment step, in which the one to be treated Material was treated with the steam of the respective azeotropic preparation.
  • the Azeotropic preparation was made after passing the feed pump into a distiller transferred to the vapor phase.
  • the steam was in intimate contact with the person to be treated Material brought into the drum of the cleaning device 12.
  • the liquid out the cleaning step after the condensation was removed from the drum and after passing through the filter device 16 to separate the organic substances Separation chamber 4 fed where organic contaminants have been separated.
  • the drum was evacuated, for example to 10 -2 bar, and the remaining steam was drawn off in the same manner as described above.
  • the warm treated material released the water and the organic component of the azeotropic preparation in vacuo so that it was dry after 10 minutes of vacuum treatment.
  • the material to be treated was in much better condition than the material in conventional Had been treated wisely. Both inorganic and organic contaminants were completely removed. The material had no unpleasant smell and an excellent appearance. It could be ironed or pressed with good results become.
  • the third step is not absolutely necessary after liquid cleaning; the same results as described above were obtained even without the steam treatment achieved. It is also possible according to the invention to carry out the steps of treating the cleaning material with liquid azeotropic preparation through treatment steps to be completely or partially replaced with vaporous azeotropic preparation. This one too The same cleaning results were achieved with the procedure.
  • Misprinted printed circuit boards or stencils from SMD production were used with a Three-component mixture of water, dipropylene glycol mono-n-propyl ether or one Treated amine compound or N-heterocyclic compound or organic acids, as can be seen, for example, from Table II.
  • the three-component mixtures that as active cleaning liquids were used, consisted of 90 wt .-% of water, too (10 - y)% by weight of dipropylene glycol mono-n-propyl ether and y% by weight of one of the Compounds listed in Table II. The cleaning was done by spraying.
  • the circuit boards or stencils were used to remove SMD adhesive in the table II specified boiling temperatures with the liquid azeotropic preparations below Use of ultrasound treated (however, ultrasound is not essential to achieve good cleaning results required).
  • the azeotropic preparations were in the form of a milky emulsion that became almost clear when ultrasound was applied. There was one complete removal of the adhesive without protective devices, for example for protection before explosions, had to be provided in the system.

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
EP01128155A 1996-03-08 1997-03-10 Procédé de nettoyage d'objets et liquide nettoyant Revoked EP1191095B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE29724628U DE29724628U1 (de) 1996-03-08 1997-03-10 Reinigungsflüssigkeit

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19609119A DE19609119C2 (de) 1996-03-08 1996-03-08 Verfahren zum Reinigen von Gegenständen
DE19609119 1996-03-08
US70523796A 1996-08-30 1996-08-30
US705237 1996-08-30
EP97914208A EP0885287A1 (fr) 1996-03-08 1997-03-10 Procede pour le nettoyage d'objets

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP97914208A Division EP0885287A1 (fr) 1996-03-08 1997-03-10 Procede pour le nettoyage d'objets

Publications (3)

Publication Number Publication Date
EP1191095A2 true EP1191095A2 (fr) 2002-03-27
EP1191095A3 EP1191095A3 (fr) 2002-08-07
EP1191095B1 EP1191095B1 (fr) 2003-05-28

Family

ID=26023617

Family Applications (2)

Application Number Title Priority Date Filing Date
EP01128155A Revoked EP1191095B1 (fr) 1996-03-08 1997-03-10 Procédé de nettoyage d'objets et liquide nettoyant
EP97914208A Withdrawn EP0885287A1 (fr) 1996-03-08 1997-03-10 Procede pour le nettoyage d'objets

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP97914208A Withdrawn EP0885287A1 (fr) 1996-03-08 1997-03-10 Procede pour le nettoyage d'objets

Country Status (3)

Country Link
EP (2) EP1191095B1 (fr)
DE (1) DE59710188D1 (fr)
WO (1) WO1997032963A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2108464A1 (fr) 2008-04-09 2009-10-14 Dow Global Technologies Inc. Procédé de nettoyage d'articles
ITMI20090564A1 (it) * 2009-04-08 2010-10-09 Lasa Impianti Srl Xapparecchiatura a basso impatto ambientale per il lavaggio di particolari metallici e non metallici che necessitano di un altro grado di pulizia

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU1829500A (en) 1998-11-25 2000-06-13 Petroferm Inc. Aqueous cleaning
DE19908434A1 (de) * 1999-02-26 2000-10-05 Wack O K Chemie Gmbh Verfahren und Reinigungsflüssigkeit zum Flüssigreinigen von Gegenständen
DE10060891C1 (de) 2000-12-07 2002-07-25 Wack O K Chemie Gmbh Verfahren zum Flüssigreinigen von Gegenständen
DE102005011236B3 (de) * 2005-03-11 2006-10-12 Pero Ag P. Erbel Maschinen- U. Apparatebau Verfahren und Vorrichtung zur Reinigung und Trocknung von Reinigungsgut mit Hilfe azeotroper Gemische
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EP0885287A1 (fr) 1998-12-23
WO1997032963A1 (fr) 1997-09-12
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DE59710188D1 (de) 2003-07-03
EP1191095A3 (fr) 2002-08-07

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