EP1322742A1 - Verfahren und vorrichtung zum entfetten - Google Patents

Verfahren und vorrichtung zum entfetten

Info

Publication number
EP1322742A1
EP1322742A1 EP01972228A EP01972228A EP1322742A1 EP 1322742 A1 EP1322742 A1 EP 1322742A1 EP 01972228 A EP01972228 A EP 01972228A EP 01972228 A EP01972228 A EP 01972228A EP 1322742 A1 EP1322742 A1 EP 1322742A1
Authority
EP
European Patent Office
Prior art keywords
solvent
cleaning
rinsing
boiling point
use according
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
EP01972228A
Other languages
English (en)
French (fr)
Other versions
EP1322742B1 (de
Inventor
Pascal Thouvenot
Pierre Plume
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
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 Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Publication of EP1322742A1 publication Critical patent/EP1322742A1/de
Application granted granted Critical
Publication of EP1322742B1 publication Critical patent/EP1322742B1/de
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
    • C11D7/5004—Organic solvents
    • C11D7/5018—Halogenated 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
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/16—Metals
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/263—Ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/264—Aldehydes; Ketones; Acetals or ketals
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/266—Esters or carbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/28—Organic compounds containing halogen

Definitions

  • the present invention relates to a degreasing method and device.
  • Chlorofluorocarbons have been widely used as degreasing products.
  • CFC113 has been used because of its strong degreasing power, in particular with respect to animal fats such as lanolin.
  • the aqueous or semi-aqueous processes combine a cleaning phase carried out with surfactant solutions for the aqueous processes, or with an organic solvent for the semi-aqueous processes, and a rinsing phase with water.
  • the technique is significantly different from that of processes using fluorocarbons.
  • the cold mono-solvent process uses organic solvents of petroleum origin which have low flash points. The use of this type of product however requires additional safety constraints compared to the other processes.
  • the present invention precisely provides a degreasing process and device which overcomes the aforementioned drawbacks, without danger for the ozone layer, and making it possible to achieve the degreasing efficiency obtained with the processes using CFC113.
  • the process of the present invention is characterized in particular in that it comprises a step of cleaning the surface to be degreased with a cleaning solvent and a step of rinsing the surface cleaned with a rinsing solvent, said cleaning solvent comprising a solvent A having a boiling point higher than 100 ° C and having no flash point or a flash point higher than 70 ° C, said rinsing solvent comprising a solvent B having a boiling point lower than 70 ° C and a surface tension of less than 30m / m.
  • the process of the invention is a co-solvent process.
  • the cleaning of the surface with the cleaning solvent can advantageously be carried out in the presence of ultrasound.
  • the solvent A can be chosen from an alcohol, a ketone, an ester, a diester, an ether, an ether glycol, or a mixture of these
  • the solvent B can be a solvent chosen from the families hydrofluoroethers, hydrofluorocarbons, or perfluorinated alkanes, or a mixture of solvents chosen from these families.
  • the cleaning solvent can consist of pure solvent A
  • the rinsing solvent can consist of pure solvent B.
  • solvents A and B can be used separate and pure.
  • the cleaning solvent comprising solvent A can also comprise rinsing solvent comprising solvent B.
  • the cleaning solvent can comprise solvent A and solvent B.
  • solvent A can be used mixed with solvent B and solvent B can be used pure.
  • the solvent A can be for example dipropylene glycol monomethyl ether (DPM)
  • the solvent B can be for example 1,1,1,2,3,4,4,5,5, 5- decafluoropentane.
  • DPM is an organic solvent with a crude chemical formula C 7 H 1S 0 3 with a high boiling point, 188 ° C., having an excellent degreasing power, even with respect to lanolin, these two products being miscible in all proportions.
  • 1, 1, 1, 1, 2, 3, 4, 4, 5, 5, 5-decafluoropentane, of raw formula C 5 H 2 F ⁇ 0 has a boiling point at 55 ° C and a low surface tension, of 14.1 mN / m. Its ozone-destroying power is zero.
  • This product is marketed in particular by the company Du Pont de Nemours under the trademark VERTREL XF.
  • the cleaning solvent is a mixture of solvent A and of solvent B
  • the proportions can be for example from 30 to 95% by volume of A in the mixture, preferably from 60 to 80% by volume, the rest being solvent B.
  • the present invention also relates to the use of solvents A and B defined above, for example under the conditions described above, and to the use of a device for carrying out the method of the invention .
  • the device is described in the examples below.
  • the present invention therefore consists in particular in combining two particular organic solvents, for cleaning and rinsing which, implemented for example in a co-solvent process, lead to a degreasing of quality equivalent or superior to that obtained with CFC 113 of l prior art without harming the ozone layer. It is applicable to the degreasing of all types of greases or mineral, vegetable, animal or synthetic oils, for example lanolin.
  • FIG. 1 is a schematic representation of a co-solvent process according to a first variant of the present invention in which the cleaning and rinsing solvents are separated,
  • FIG. 2 is a graph illustrating the degreasing kinetics carried out at 50 ° C. according to the method of the present invention
  • FIG. 3 is a schematic representation of a co-solvent process according to a second variant of the present invention in which the cleaning solvent is a mixture of solvents according to the invention.
  • Figures 1 and 3 are schematic representations of a device used for the implementation of the method of the present invention according to two embodiments.
  • the device 1 comprises in an enclosure 3: a cleaning tank 5 intended to contain a cleaning solvent, a rinsing tank 7 intended to contain a rinsing solvent, a condensation gutter 9 placed in the enclosure 3 on its periphery and above the tanks 5 and 7, condensing coils 11 placed in the enclosure and above the tanks 5 and 7, and filtration means 13 and 15 making it possible to pump and filter the solvent respectively cleaning agent and rinse solvent and re-inject them into the tanks.
  • the device preferably comprises one or more of the following elements: a water separator 17, an ultrasonic generator 19 for the cleaning tank 5, and a heating means 21 for the tanks 5
  • the heating means can be a hot plate.
  • the condensing coils 9 are preferably connected to a cold group (not shown). They are at the top of the device. They allow condensation of the rinsing solvent vapors.
  • the solvent thus condensed flows into the condensation gutter 9 towards the water separator 17.
  • This separator can be a chemical or physical separator. It makes it possible to rid the condensed solvent of condensed water vapor.
  • the solvent is then conveyed to the rinsing tank as indicated by the arrow f.
  • the cleaning solvent A is dipropylene glycol monomethyl ether (DPM)
  • the rinsing solvent B is 1, 1, 1, 2, 3, 4, 4, 5, 5 , 5-decafluoropentane marketed by the company Du Pont de Nemours under the trademark VERTREL XF.
  • the surface to be cleaned is that of a preferably metallic part but can also be composed of any material compatible with the solvents A and B used, that is to say not eroded by these solvents.
  • the part may for example be made of plastic, ceramic, a material of the semiconductor type, etc. It is suspended in a basket (not shown) to be immersed in the cleaning solvent subjected to ultrasound and heated to a temperature 50 ° C.
  • a rotation movement of the basket containing the part to be degreased in the different baths has improved the degreasing.
  • the degreasing efficiency of a part covered with lanolin with the process of the present invention was higher than that of the processes of the prior art, in particular that obtained with a CFC113 process. This was demonstrated by a comparative study of the solubilization of lanolin in the solvent CFC 113 and the solvent A of the present invention, and by a study of degreasing kinetics. The comparative study showed a total solubility of lanolin in solvent A and a solubility of only 440 g / 1 in CFC 113.
  • FIG. 2 is a graph illustrating one of the degreasing kinetics carried out at 50 ° C. according to the method of the present invention with the above solvents.
  • the abscissa axis represents time in minutes
  • the ordinate axis represents the contact angle in degrees (Ac in degrees).
  • the low contact angle of 25 ° obtained after 1 hour of treatment shows very good degreasing.
  • the cleaning and rinsing solvents are in separate tanks.
  • the method is implemented with a mixture of the two aforementioned solvents in the cleaning tank.
  • the rinsing solvent contained in the mixture of the cleaning tank evaporates under the action of heating and ultrasound.
  • An adjustment of the concentration of solvent B in the mixture of solvents A + B making it possible to preferably store from 60 to 80 ° C. of solvent A in the mixture is ensured by a continuous pouring from the rinsing tank to the cleaning tank containing the two solvents.
  • This second variant makes it possible to obtain a degreasing of higher quality than that obtained in the first variant due to the additional stirring of the mixture of solvents A and B by cavitation, by means of ultrasound, and boiling of the solvent B.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
EP01972228A 2000-09-29 2001-09-28 Verfahren und vorrichtung zum entfetten Expired - Lifetime EP1322742B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0012428A FR2814691B1 (fr) 2000-09-29 2000-09-29 Procede et dispositif de degraissage
FR0012428 2000-09-29
PCT/FR2001/003015 WO2002026923A1 (fr) 2000-09-29 2001-09-28 Procede et dispositif de degraissage

Publications (2)

Publication Number Publication Date
EP1322742A1 true EP1322742A1 (de) 2003-07-02
EP1322742B1 EP1322742B1 (de) 2007-04-11

Family

ID=8854821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01972228A Expired - Lifetime EP1322742B1 (de) 2000-09-29 2001-09-28 Verfahren und vorrichtung zum entfetten

Country Status (7)

Country Link
US (1) US7201805B2 (de)
EP (1) EP1322742B1 (de)
AT (1) ATE359353T1 (de)
DE (1) DE60127849T2 (de)
ES (1) ES2284694T3 (de)
FR (1) FR2814691B1 (de)
WO (1) WO2002026923A1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070228600A1 (en) * 2005-04-01 2007-10-04 Bohnert George W Method of making containers from recycled plastic resin
US7253253B2 (en) * 2005-04-01 2007-08-07 Honeywell Federal Manufacturing & Technology, Llc Method of removing contaminants from plastic resins
US20100236580A1 (en) * 2007-05-15 2010-09-23 Delaurentiis Gary M METHOD AND SYSTEM FOR REMOVING PCBs FROM SYNTHETIC RESIN MATERIALS
CN113454111A (zh) 2018-11-06 2021-09-28 健玛保 抗体配制剂

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06122897A (ja) * 1992-09-28 1994-05-06 Mitsubishi Kasei Corp 脱脂洗浄剤
EP0688860B1 (de) * 1993-03-12 2003-05-21 Daikin Industries, Limited Verfahren zur herstellung von sauberen gegenstaenden
EP0701634A1 (de) * 1993-06-01 1996-03-20 AlliedSignal Inc. Mehrloesungsmittel-reinigungssystem
US5612303B1 (en) * 1993-06-15 2000-07-18 Nitto Chemical Industry Co Ltd Solvent composition
BR9609495A (pt) * 1995-07-18 1999-03-02 Unilever Nv Composição e processos de remoção de gordura cozida sobre uma superfície de metal e de limpeza de uma área para estacionamento
JP4063906B2 (ja) * 1996-05-20 2008-03-19 三井・デュポンフロロケミカル株式会社 洗浄方法
FR2751899B1 (fr) * 1996-08-01 1998-10-23 Rhone Poulenc Chimie Procede de degraissage avec une composition exempte de tensioactifs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0226923A1 *

Also Published As

Publication number Publication date
DE60127849D1 (de) 2007-05-24
US7201805B2 (en) 2007-04-10
WO2002026923A1 (fr) 2002-04-04
DE60127849T2 (de) 2008-01-17
EP1322742B1 (de) 2007-04-11
ES2284694T3 (es) 2007-11-16
US20040079394A1 (en) 2004-04-29
FR2814691B1 (fr) 2003-10-03
FR2814691A1 (fr) 2002-04-05
ATE359353T1 (de) 2007-05-15

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