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WO1994013777A1 - Composition de nettoyage - Google Patents

Composition de nettoyage Download PDF

Info

Publication number
WO1994013777A1
WO1994013777A1 PCT/GB1993/002464 GB9302464W WO9413777A1 WO 1994013777 A1 WO1994013777 A1 WO 1994013777A1 GB 9302464 W GB9302464 W GB 9302464W WO 9413777 A1 WO9413777 A1 WO 9413777A1
Authority
WO
WIPO (PCT)
Prior art keywords
cleaning composition
substantially non
aqueous cleaning
aqueous
surfactant
Prior art date
Application number
PCT/GB1993/002464
Other languages
English (en)
Inventor
Christopher John Mitchell
Neil Winterton
Original Assignee
Imperial Chemical Industries Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Imperial Chemical Industries Plc filed Critical Imperial Chemical Industries Plc
Priority to AU55712/94A priority Critical patent/AU5571294A/en
Publication of WO1994013777A1 publication Critical patent/WO1994013777A1/fr

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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/18—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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0017—Multi-phase liquid compositions
    • C11D17/0021—Aqueous microemulsions
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/43—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
    • C23G5/024—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing hydrocarbons
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/22—Secondary treatment of printed circuits
    • H05K3/26—Cleaning or polishing of the conductive pattern

Definitions

  • the present invention relates to cleaning compositions, particularly cleaning compositions in which contaminated articles such as, for example, metals, glass, electronic components and printed circuit boards, are contacted with a cleaning composition and the
  • Solvent cleaning applications wherein contaminated articles are immersed in or washed with halogenated hydrocarbon solvents and/or the vapours thereof are well known and are in common use.
  • chlorofluorocarbons may be damaging the ozone layer surrounding the earth and it has been agreed that the manufacture and use thereof should be severely restricted and eventually curtailed.
  • Non-halogenated solvents eg terpenes
  • terpenes have been proposed as substitutes for halogenated hydrocarbon solvents in US 4, 640, 719.
  • terpenes are often completely insoluble in water and cannot be directly flushed away thereby and it has been further proposed therein to incorporate one or more emulsifying
  • hydrocarbons and dibasic esters often in the presence of a so-called compatibilising component, and mixtures of aliphatic hydrocarbons and certain polar organic radicals, and mixtures of aliphatic hydrocarbons and certain polar organic radicals, and mixtures of aliphatic hydrocarbons and certain polar organic radicals, and mixtures of aliphatic hydrocarbons and certain polar organic radicals, and mixtures of aliphatic hydrocarbons and certain polar organic
  • Multi-component mixtures including terpenes
  • NMP N-methylpyrrolidinone
  • various additives have been proposed as cleaning compositions for certain applications in Research Disclosure, January 1988, 44, No 28555, EP 0,354,027 and US 4,983,224; and cleaning compositions comprising NMP, a water-miscible
  • alkanolamine and a hydrocarbon have been proposed in US 4, 276, 186.
  • aqueous microemulsions for use in cleaning systems have been disclosed in WO 92/03528, WO 90/02665, US 5,230,821, US 5,171,475, US 5,112,516, US 5,213,624 and US 5, 158,710.
  • WO 93/13246 discloses mixtures of a C 8 -C 15 hydrocarbon and a C 5 -C 15 aliphatic alcohol for use as cleaning solvents.
  • WO 93/03102 discloses the cleaning of the surfaces of solid articles by wiping with a rag containing a mixture of propylene glycol methyl ether acatate and at least one of propylene glycol methyl ether, methyl isoamyl ketone, isoparaffin and n-butyl acatate.
  • US 4, 867, 800 and US 4, 983, 224 discloses certain cleaning compositions derived from terpene hydrocarbons.
  • US 5, Oil, 620 discloses certain cleaning compositions derived from dibasic esters.
  • non-combustible we mean that the solvent has a flash point above about 60°C measured by the Tag Closed Cup method.
  • a substantially non-aqueous cleaning composition which comprises a dipolar aprotic or protic organic compound, an aliphatic compound and a surfactant.
  • non-aqueous cleaning composition is in the form of a non-aqueous microemulsion.
  • non-aqueous microemulsion we mean a
  • microemulsions have low viscosity and small domain size and are thermodynamically stable.
  • Non-aqueous microemulsions wherein the first organic liquid is formamide have been studied (Lattes et al, Colloids Surf, 1989, 35, 221-35; Friberg et al, Langmuir, 1988, 4, 796-801; Das et al, J Phys. Chem.
  • dipolar aprotic or protic solvents of which the cleaning composition according to the presentmvention may be comprised may be mentioned inter alia glycols, eg ethylene glycol; amides, eg dimethyl formamide; sulphoxides, eg dimethyl sulphoxide; or preferably an N-alkyl pyrolidinone, more preferably NMP.
  • the aliphatic compound of which the cleaning composition according to the present invention may be comprised has a flash point of more than 60 oC and boils m the range 150-300oC, preferably in the range
  • the aliphatic compound is preferably an alkane, more preferably a C 10-13 alkane or a mixture thereof and particularly more preferably dodecane.
  • the aliphatic compound may contain one or more rings, eg it may a "naphthene” derivative, i.e. "naphthenic"; however, this is not preferred.
  • the aliphatic compound may bear one or more substituents which do not unduly inhibit the solvent power of the aliphatic compound or unduly increase its
  • dipolar aprotic or protic organic compound eg NMP
  • the cleaning composition of the present invention may contain a small amount, up to about 5% w/w say, of an aromatic compound, although this is not preferred.
  • the surfactant in the non-aqueous cleaning composition according to the present invention is any surfactant.
  • a non-ionic surfactant preferably a non-ionic surfactant, although we do not exclude the possibility that an ionic surfactant, e. g. a cationic or an anionic surfactant, may be used.
  • an ionic surfactant e. g. a cationic or an anionic surfactant
  • non-ionic surfactants may be mentioned inter alia surfactants derived by the alkoxylation, eg ethoxylation, of a hydroxy-containing compound, eg a phenol, sugar, or preferably an alcohol. It is often preferred that the non-ionic surfactant is an ethoxylated long-chain alcohol.
  • long-chain alcohol we mean an alcohol having between 7 and 20 carbon atoms, preferably between 9 and 15 carbon atoms. Conveniently a mixture of C 9 and C 11 alcohols is used.
  • the long-chain is preferably linear although we do not exclude the possibility that it may be branched, e. g. a 2-methyl isomer.
  • the ratio of the number of ethoxy groups to the length of the alcohol chain in the surfactant will be chosen in the light of inter alia the dipolar aprotic or protic organic compound and the aliphatic hydrocarbon present in the cleaning
  • composition The skilled man, by simple experiment, will be able to determine a suitable ratio of the number of ethoxy groups to the length of the alcohol chain in the surfactant.
  • the mixture should contain sufficient surfactant to render the cleaning composition clear to the naked eye.
  • the concentration of the non-ionic surfactant is typically between 5 and 50 w/w%, preferably between 10 and 25 w/w%; the concentration of NMP is between 2 and 30 w/w%, preferably between 5 and 20 w/w%; and the concentration of the aliphatic compound is between 50 and 95 w/w%, preferably between 60 and
  • the concentration of the non-ionic surfactant is about 18% w/w
  • the concentration of the dipolar aprotic or protic organic compound is about 12% w/w
  • the concentration of the aliphatic compound is about 70% w/w, particularly where the non-ionic surfactant is Synperonic ( RTM ) 91/2.5, the dipolar aprotic or protic organic compound is NMP and the aliphatic compound is dodecane.
  • cleaning composition in the form of a micremulsion comprising a surfactant, an aliphatic compound and a dipolar aprotic or protic organic compound in the
  • a non-aqueous cleaning composition in the form of a microemulsion comprising a surfactant, an aliphatic compound and a dipolar aprotic or protic organic compound in the proportions falling within the shaded area shown in the diagram of Figure 2.
  • the cleaning composition may contain additives, for example a stabiliser, or a corrosion inhibitor.
  • the cleaning composition may be used in cold cleaning applications but will typically be employed at an elevated temperature up to its flash point. Cleaning is conveniently carried out at about 20-55°C.
  • a process for the cleaning of an article which process comprises the step of contacting the article with the cleaning composition according to the first aspect of the present invention, for a suitable period of time, removing the article from contact with the cleaning composition and rinsing the article with an aqueous medium to remove residual cleaning composition therefrom.
  • the method of contacting the article with the cleaning composition in the process according to the further aspect of the present invention is not critical.
  • the article, or an appropriate portion thereof may be contacted with the liquid cleaning composition, typically by immersion in a bath thereof.
  • the article is subjected to ultrasonic radiation or mechanical agitation, e. g. stirring or vibration, during the
  • the article is removed from contact with the cleaning composition, eg by removing the article from a bath of the liquid cleaning composition, and residual cleaning composition thereon is removed by rinsing with an aqueous rinsing medium.
  • the aqueous rinsing medium is water. Rinsing is conveniently carried out at 20-55°C, e. g. ambient temperature.
  • the cleaning composition is preferably recovered from the liquid mixture produced in the rinsing step and recycled.
  • the article cleaned in the process of the present invitation is typically an electronic component.
  • flux residues may be removed from a printed circuit board after soldering.
  • Figure 1 is a phase diagram for systems containing dodecane, Synperonic (RTM) 91/25 and NMP;
  • Figure 2 is a part of the phase diagram shown in Fig 1 to a bigger scale.
  • Figure 3 is a phase diagram for systems containing dodecane, a propoxylated surfactant and NMP.
  • portions 2 indicate two-phase compositions.
  • Examples 1-2 illustrate cleaning compositions according to the present invention
  • Examples 3-6 are Comparative Tests.
  • NMP was added to a 20% w/w Synperonic 91/2.5 (ex ICI; Synperonic is an RTM ) /dodecane mixture to give the cleaning compositions shown in the Table.

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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)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Detergent Compositions (AREA)

Abstract

Procédé de nettoyage d'un article qui consiste à mettre ledit article (i) en contact avec une composition de nettoyage sensiblement non aqueuse contenant un composé organique dipolaire exempt ou non de protons, un composé aliphatique et un tensioactif et se présentant de préférence sous la forme d'une microémulsion non aqueuse et (ii) à enlever la composition de nettoyage essentiellement non aqueuse de l'article, en mettant celui-ci en contact avec un milieu de rinçage aqueux.
PCT/GB1993/002464 1992-12-07 1993-11-30 Composition de nettoyage WO1994013777A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU55712/94A AU5571294A (en) 1992-12-07 1993-11-30 Cleaning compositions

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929225540A GB9225540D0 (en) 1992-12-07 1992-12-07 Cleaning compositions
GB9225540.5 1992-12-07

Publications (1)

Publication Number Publication Date
WO1994013777A1 true WO1994013777A1 (fr) 1994-06-23

Family

ID=10726243

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1993/002464 WO1994013777A1 (fr) 1992-12-07 1993-11-30 Composition de nettoyage

Country Status (3)

Country Link
AU (1) AU5571294A (fr)
GB (1) GB9225540D0 (fr)
WO (1) WO1994013777A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006102A1 (fr) * 1993-08-27 1995-03-02 Colgate-Palmolive Company Microemulsion liquide non aqueuse
US6432445B1 (en) 1999-05-28 2002-08-13 Novartis Ag Pharmaceutical capsules comprising a cyclosporin
US7725976B1 (en) 2004-08-26 2010-06-01 The Sherwin-Williams Company Apparatus and method for the automated cleaning of articles
US8501433B2 (en) * 2002-11-01 2013-08-06 Pierce Biotechnology, Inc. Solvent for chromogenic substrate solution

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428871A (en) * 1981-09-23 1984-01-31 J. T. Baker Chemical Company Stripping compositions and methods of stripping resists
DE3728547A1 (de) * 1986-09-02 1988-03-03 Colgate Palmolive Co Klares einphasiges fleckenreinigungsmittel als fluessige mikroemulsion, loesung oder gel
US4764222A (en) * 1987-04-13 1988-08-16 Merck & Co. Inc. N-methyl-2-pyrrolidone compositions
WO1991006690A1 (fr) * 1989-11-01 1991-05-16 Henkel Kommanditgesellschaft Auf Aktien Melange pour le nettoyage de cartes imprimees

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4428871A (en) * 1981-09-23 1984-01-31 J. T. Baker Chemical Company Stripping compositions and methods of stripping resists
DE3728547A1 (de) * 1986-09-02 1988-03-03 Colgate Palmolive Co Klares einphasiges fleckenreinigungsmittel als fluessige mikroemulsion, loesung oder gel
US4764222A (en) * 1987-04-13 1988-08-16 Merck & Co. Inc. N-methyl-2-pyrrolidone compositions
WO1991006690A1 (fr) * 1989-11-01 1991-05-16 Henkel Kommanditgesellschaft Auf Aktien Melange pour le nettoyage de cartes imprimees

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995006102A1 (fr) * 1993-08-27 1995-03-02 Colgate-Palmolive Company Microemulsion liquide non aqueuse
US6432445B1 (en) 1999-05-28 2002-08-13 Novartis Ag Pharmaceutical capsules comprising a cyclosporin
US6767555B2 (en) 1999-05-28 2004-07-27 Novartis Ag Pharmaceutical compositions
US8501433B2 (en) * 2002-11-01 2013-08-06 Pierce Biotechnology, Inc. Solvent for chromogenic substrate solution
US9046495B2 (en) 2002-11-01 2015-06-02 Pierce Biotechnology, Inc. Non-toxic solvent for chromogenic substrate solution and uses thereof
US7725976B1 (en) 2004-08-26 2010-06-01 The Sherwin-Williams Company Apparatus and method for the automated cleaning of articles

Also Published As

Publication number Publication date
AU5571294A (en) 1994-07-04
GB9225540D0 (en) 1993-01-27

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