EP0488909A1 - Verfahren zur Regelung des Konditionierens eines Gases und Vorrichtung dazu - Google Patents

Verfahren zur Regelung des Konditionierens eines Gases und Vorrichtung dazu Download PDF

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Publication number
EP0488909A1
EP0488909A1 EP91420413A EP91420413A EP0488909A1 EP 0488909 A1 EP0488909 A1 EP 0488909A1 EP 91420413 A EP91420413 A EP 91420413A EP 91420413 A EP91420413 A EP 91420413A EP 0488909 A1 EP0488909 A1 EP 0488909A1
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EP
European Patent Office
Prior art keywords
gas
conditioning
liquid
vaporization chamber
temperature
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
EP91420413A
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English (en)
French (fr)
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EP0488909B1 (de
Inventor
Yves Chave
Jean Marie Serra Tosio
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.)
ASSOCIATION DE GESTION DE L'ECOLE FRANCAISE DE PAPETERIE ET DE L'IMPRIMERIE
Serra Tosio Jean-Marie
Original Assignee
ASSOCIATION DE GESTION DE L'ECOLE FRANCAISE DE PAPETERIE ET DE L'IMPRIMERIE
Serra Tosio Jean-Marie
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.)
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Publication date
Application filed by ASSOCIATION DE GESTION DE L'ECOLE FRANCAISE DE PAPETERIE ET DE L'IMPRIMERIE, Serra Tosio Jean-Marie filed Critical ASSOCIATION DE GESTION DE L'ECOLE FRANCAISE DE PAPETERIE ET DE L'IMPRIMERIE
Publication of EP0488909A1 publication Critical patent/EP0488909A1/de
Application granted granted Critical
Publication of EP0488909B1 publication Critical patent/EP0488909B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/10—Mixing gases with gases
    • B01F23/12—Mixing gases with gases with vaporisation of a liquid

Definitions

  • the invention relates to a method for regulating the conditioning of a gas. It also relates to a device for conditioning a gas implementing this process; it relates more particularly to an adjustable, controllable regulating device, of the vapor concentration and of the temperature of a gas stream.
  • the thermostatically controlled humidifier consists of a bubbling chamber partially filled with water at constant level, connected on the one hand by a diffuser to the inlet of gas to be humidified, on the other hand, to a tubing d water supply at constant level, and finally to an outlet for the humidified gas.
  • This solution is perfectly suited to low flow rates, in particular for calibrating a probe or a hygrometer.
  • this device cannot be used for packaging large volumes, such as parts, workshops or spraying apparatus, which require substantial flow rates, because such flow rates are not not compatible with a bubbling humidification system.
  • a humidifier device in which the humidification is obtained by spraying a liquid in a mixing chamber, said liquid being sprayed in contact with a source of air supply.
  • a humidified or even saturated gas is certainly obtained, but with very low efficiency, the largely adiabatic evaporation causing the cooling of the droplet-air mixture in the mixing chamber, and in addition, the temperature of the liquid. spray is not regulated, so the gas is only partially conditioned.
  • One of the objects of the invention is to provide a process capable of allowing the humidification or saturation of a gas, and generally the conditioning of a gas, for relatively large volumes, by optimizing the saturation process of said gas.
  • the invention consists in saturating the gas already thermally conditioned with the conditioning liquid also thermally conditioned, and this in a low pressure medium, thereby promoting the evaporation process, and optimizing the saturation phenomenon.
  • the saturation of the gas is self-regulated by the depression itself generated in the low pressure environment.
  • the device according to the invention makes it possible to obtain these results economically and efficiently.
  • the conditioning liquid conveyed at the neck of the venturi duct by the depression created at its level is sprayed into the gas stream already thermally conditioned, this spraying in a low pressure medium also taking place at the temperature gas conditioning system, the saturator being immersed in the thermostatically controlled enclosure.
  • the evaporation process is favored, since after passing through the neck of the venturi, where the gas flow speed and therefore the depression created at this level are the most important, the gas certainly undergoes a decrease in its temperature, but this decrease is immediately compensated for by the supply of heat by convection due to the flow of gas along the conditioned walls of the divergent.
  • This evaporation is further accentuated by the choice of a diverging angle with a small apex angle, therefore of relatively large length, so that the gas flow speed is not immediately reduced, thereby maintaining a certain depression.
  • the walls of the divergent compensate for the evaporation due to the adiabatic exchange.
  • the conditioning can result in both heating and cooling of the volume, since the operating system is reversible.
  • the vaporization chamber comprises a liquid-gas separation chamber situated above the level of the packaging liquid, and connected to the outlet pipe.
  • the gas stream is compressed air
  • the humidifying liquid is water
  • the dry air supply pipe is connected by a connection disposed outside of the thermostatically controlled enclosure to a controlled mixing valve, connected to the outlet tubing of the vaporization chamber, said mixing valve being in turn connected to the outlet tubing which passes through the thermostatically controlled enclosure.
  • Figure 1 is a schematic representation of a preferred device of the invention.
  • Figure 2 is a sectional representation of the sealed assembly characteristic of the invention.
  • Figure 3 is a schematic representation of a simplified embodiment of the invention.
  • FIG. 4 shows an execution detail suitable for embodiments requiring high flow rates.
  • the device according to the invention for producing conditioned air with controlled and programmed humidity firstly comprises a source of air, for example compressed air (1) such as a compressor, a bottle, etc., connected by tubing to a valve (2), then to a pressure regulator (3).
  • This regulator (3) is in turn connected to a known hygroscopic desiccator assembly (4), for example of the type called "VAN AIR” marketed by AUXITROL which, in known manner, has a drain (5).
  • This desiccator assembly (4) is in turn connected to a second pressure reducer (6), then to a pressure gauge (7) and to a valve (8), so as to ensure a constant flow of dry air in the manifold. supply (21) (pressure of dry compressed air on the valve (8) between six hundred and one thousand KPa).
  • the actual packaging device designated by the general reference (10) comprises a thermostatically controlled enclosure, advantageously insulated, filled with distilled water (12) to a level (13).
  • This enclosure (11) is thermostatically controlled by known means (14) essentially comprising, immersed in water, an electrical resistance (15), an agitator (16) associated with a circulation pump, a thermometer (17) and an apparatus (18) temperature programming display and control, the assembly being controllable from the outside.
  • the dry compressed air opens into the enclosure (11) through an orifice (20), then is connected to a supply pipe (21) forming a coil (22) immersed in this enclosure.
  • This tubing (21) and the coil (22) are connected by a T-connection (23) to two other tubings, respectively a submerged tubing (24), and another non-fully submerged tubing (25), leaving the enclosure. (11).
  • the submerged tubing (24) is connected to the humidifier (30) characteristic of the invention.
  • This characteristic waterproof humidifier (30) detailed in FIG. 2 essentially comprises a pressure-reducing or depressurizing conduit with a venturi effect associated with a vaporization chamber (36).
  • the venturi tube is constituted in order by a convergent (31) connected upstream (32) to the immersion dry air supply pipe (24), then downstream to a neck (33).
  • This neck (33) is associated with a divergent (34) connected in turn by a conical connection (35) to the characteristic cylindrical vaporization chamber (36).
  • the angle at the top of the convergent (31) is close to 21 °
  • the angle at the top of the divergent (34) is close to 6 or 7 ° .
  • the characteristic vaporization chamber (36) has at the bottom (37) an orifice (38) connected by a tube (39) immersed in the enclosure (11) to a water supply means designated by the general reference ( 40) disposed outside of this enclosure (11).
  • This water supply means (40) is thermostatically controlled by a serpentine tube (41), drawing water (12) from the thermostatically controlled enclosure (11).
  • This water supply means (40) disposed outside the enclosure essentially comprises in order an expansion tank and water supply distilled (42), connected to a manual valve (43), then to a tank proper (44), opening onto a valve (45) electro-pneumatically controlled, connected to the immersed tubing (39).
  • the valve (43) is slightly opened so as to ensure a certain flow rate of air leakage and therefore keeping the water (50) in the vaporization chamber (36) at a constant level (51), defined by l orifice (38).
  • the distilled water (50) of the vaporization chamber (36) is connected by a tube (52), first of all to a dust filter (56) intended in particular to avoid the clogging, then to the nozzle arranged in the neck (33) of the venturi.
  • the bottom (53) of this tubing (52) is disposed below the level (51), so that the neck (33) is permanently supplied with distilled water.
  • the upper end (54) of the tubing (52) opens exactly into this neck (33) which, for this purpose, has two opposite through holes (55), arranged horizontally opposite one another in the section even of the neck (33) thus forming a nozzle.
  • venturi induces a depression at the level of the diverging part (34), which causes the water (50) to be drawn up at the neck (33) and its instantaneous spraying in the form of fine droplets in the diverging part (34). ), some of which fall back into the chamber (36).
  • the characteristic humidifier (30) is machined in bronze, and is therefore a thermal conductor.
  • it comprises fins (60, 61) intended to facilitate heat exchange with the thermostatically controlled transfer liquid (12).
  • the temperature of the divergent (34) and of the vaporization chamber (36) is very close to the temperature of the thermostatically controlled liquid.
  • the vaporization chamber (36) has two horizontal plates (not shown), pierced with through orifices offset from one plate to another, or two appropriate grids, in order to cause the deposit on these plates or on these grids drops of water carried by saturated air.
  • These plates or grids are advantageously made of a thermal conductive material, thus making it possible to complete the condensation or evaporation of the liquid as the case may be, by increasing the heat exchange surface.
  • these grids play a regulating role, insofar as when water droplets are deposited at the level of said grids, thereby reducing the air flow passing through the grids, they in fact reduce the pressure difference between the neck (33) of the venturi and the vaporization chamber. In this way, the amount of distilled water drawn in at the neck (33) is reduced, and consequently, the spraying decreases. In fact, a smaller amount of droplets is deposited at the grids, increasing the pressure difference, and therefore the amount of water sprayed at the neck (33). One thus obtains a self-regulation of saturation, and a permanent mode compared to the imposed set point.
  • the vaporization chamber (36) has, above the constant level of the water (51), an outlet orifice (65), through which the almost saturated air will escape. steam.
  • This outlet port (65) for saturated air is placed just above an annular chamber (66), then is connected by a tube (67) immersed in a controlled mixing valve (70), for example arranged outside of the enclosure (11), and is also connected to the non-submerged dry air supply pipe (25). If it is desired to work at high temperature, it is preferable then that the mixing valve (70) is also immersed in the enclosure (11).
  • a centrifugal-type droplet separator (100) placed in the enclosure (11), is placed between the orifice (65) and the tubing (67). above the orifice (65), and the outlet (101) of saturated gas of which is connected to the tube (80). The separated liquid then returns through the tubing (102) into the liquid (50) through the orifice (103) located below the constant level (51).
  • the mixing valve (70) is advantageously associated with another valve (71), intended to maintain a slight leak to ensure the ascent of the water in the tubing (52).
  • the mixing valve (70) is then connected by a tubing (72) to a submerged coil (73), which is connected by a new tubing (74) to the volume (75) to be conditioned disposed outside the enclosure (11).
  • the gas conditioning device according to the invention operates in the following manner.
  • the compressed air (1) is brought to temperature by passing through the thermostatically controlled enclosure (11). Its forced passage through the venturi (31,33,34) causes the water (50) contained in the vaporization chamber (36) to be drawn in via the pipe (52) and its filter (56). The water which then opens into the neck (33) of this venturi saturates the air which passes through it. This air, after having discharged the heaviest drops of water on the horizontal plates of the vaporization chamber (36), leaves the latter through the orifice (65) and the pipe (67) until reaching the mixing valve (70).
  • This valve (70) is controlled so that the air which escapes therefrom at (72) has a determined humidity. Indeed, for a precise position of this valve (70), corresponds to a stable air humidity. If you want to control the operation more precisely, you can measure the temperature and humidity in the volume to be conditioned (75) and keep the setpoint at 0.1% relative humidity by small pulses on this valve (70).
  • the water sprayed into the neck (33) is partly evaporated in the diverging portion (34) and the chamber (36), and the excess falls back into the reservoir (37).
  • the heat required for this evaporation is provided by the conductive body of the humidifier (30) provided with exchange fins (60, 61).
  • the separation of the droplets and additional evaporation is obtained by passage through baffles (plates, grids) located in the chamber (36).
  • the saturated air produced (67) is then mixed with dry air (25) in a controllable mixing valve (70) to produce the conditioned air (75).
  • a slight air leak in (43) allows sweeping and maintaining the constant water level (51) in the chamber (36)
  • another controlled leak (71) also allows to maintain a slight flow necessary for the spray when relatively dry air is desired. Indeed, this controlled leak (71) allows the ejection of saturated air, and correspondingly prevents defusing the venturi. Finally, it makes it possible to use this device even for very low flow, since the pressure drop is permanently maintained.
  • the air contained in the chamber (36) exerts a pressure greater than the column of water contained respectively in the tube (39) and in the tank (44).
  • the valve (43) allows a slight flow of air leakage, a reverse water-air flow is established in the duct (39), so that if the water level (51) in the vaporization chamber (36) exceeds that of the high point of the orifice (38), the excess water is discharged into the tank (44).
  • the water level (51) in the chamber (36) is below the high point of the orifice (38)
  • the water descends from the reservoir (44) towards the chamber (36).
  • the reservoir (44) can be filled in a complementary manner from the expansion tank (42), after the closing of the piloted valve (45) and the opening of the valves (43) and (46).
  • Figure 3 shows as already said a simplified embodiment of the invention.
  • the parts common to Figures 1,2 and 3 have kept the same references.
  • the pressurized air (1) is expanded to a set pressure by its passage through a controlled pressure regulator (6) before the inlet (20) of the thermostatically controlled enclosure (11).
  • the dry air supply tubing (24) is integrally connected to the sealed humidifier (30), and the saturated air outlet orifice (65) is integrally connected to a tubing (80,67) associated in series to a pressure reducer (81), then to a pressure gauge (82) and a valve (83), and always in series to the immersed coil (73) in turn connected to the volume (75) to be conditioned.
  • the regulator (81) / valve (83) assembly can be replaced by a flow regulator. In this way, by simply varying the flow rate, it is possible to obtain the desired conditioning of the volume (75) of gas of constant concentration in water vapor, directly a function of the pressure and the temperature prevailing in the humidifier (30). .
  • the operation of the installation is particularly stabilized at constant air flow.
  • Variations in the humidity of the outlet air (75) are directly linked to the pressure and temperature in the humidifier (30), and to the temperature and working pressure.
  • This completely reversible form of use can also be used to dehumidify the air for room conditioning, for example, or can be used for compressed gases other than air, and liquids other than water.
  • This solution is particularly advantageous, because it leads to controlled air which can be calculated from known physical laws, since everything passes through the venturi (33). However whatever the humidity required, the flow rate is always constant in the vaporization chamber (36).
  • this device can be used successfully for the conditioning of any volume or any enclosure requiring a hygrometric degree controlled and programmed with precision, such as for example in measuring devices, in particular in laboratories, or in spray guns. spraying, for example of paint, gas and solvent mixtures, etc.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Air Humidification (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Defrosting Systems (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)
  • Central Air Conditioning (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)
  • Ventilation (AREA)
  • Air Conditioning Control Device (AREA)
EP91420413A 1990-11-27 1991-11-22 Verfahren zur Regelung des Konditionierens eines Gases und Vorrichtung dazu Expired - Lifetime EP0488909B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9015134 1990-11-27
FR9015134A FR2669555B1 (fr) 1990-11-27 1990-11-27 Dispositif de conditionnement de gaz.

Publications (2)

Publication Number Publication Date
EP0488909A1 true EP0488909A1 (de) 1992-06-03
EP0488909B1 EP0488909B1 (de) 1995-08-02

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EP91420413A Expired - Lifetime EP0488909B1 (de) 1990-11-27 1991-11-22 Verfahren zur Regelung des Konditionierens eines Gases und Vorrichtung dazu

Country Status (7)

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US (1) US5249740A (de)
EP (1) EP0488909B1 (de)
JP (1) JPH04288418A (de)
AT (1) ATE125728T1 (de)
CA (1) CA2054800A1 (de)
DE (1) DE69111762T2 (de)
FR (1) FR2669555B1 (de)

Cited By (13)

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EP0559259A1 (de) * 1992-03-06 1993-09-08 Berkin B.V. Verfahren zur Transformierung eines Flüssigkeitsstromes in einen Gasstrom und Vorrichtung zur Durchführung dieser Verfahren
US6165229A (en) * 1996-03-22 2000-12-26 L'oreal Imidazoloazole-containing compositions for dyeing keratin fibers; their use in dyeing as couplers; dyeing process
US6179882B1 (en) 1996-03-22 2001-01-30 L'oreal Keratin fibre dye composition containing pyrazolopyrimidinoxo compounds, use thereof as dye couplers, and dyeing methods
US6210447B1 (en) 1996-03-22 2001-04-03 L'oreal Compositions containing pyrazolin-3,5-dione couplers for use in keratin fiber dyeing methods and kits
US6231623B1 (en) 1996-03-22 2001-05-15 L'oreal S.A. Methods of dyeing keratin fibers with compositions containing pyrazolo-azole couplers
US6238440B1 (en) 1996-03-22 2001-05-29 L'oreal S.A. Keratin fibre dye compositions containing pyrrolo-azole compounds, use thereof as couplers, and dyeing method
WO2001068043A2 (fr) 2000-03-14 2001-09-20 L'oreal Compositions pour la teinture des fibres keratiniques contenant des derives de paraphenylenediamine a groupement pyrrolidinyle
US6322775B1 (en) 1996-03-22 2001-11-27 L'oreal S.A. Cosmetic compositions containing pyrazolin-4,5-diones, novel pyrazolin-4,5-diones, preparation methods therefor and uses thereof
US6391063B1 (en) 1998-11-20 2002-05-21 L'oreal Composition for the oxidation dyeing of keratin fibers and dyeing process using this composition
US6395042B1 (en) 1998-11-20 2002-05-28 L'oréal Composition for the oxidation dyeing of keratin fibers and dyeing process using this composition
US6702863B1 (en) 1999-06-22 2004-03-09 Lion Corporation Hairdye composition
US6923835B2 (en) 2002-09-09 2005-08-02 L'oreal S.A. Bis-para-phenylenediamine derivatives comprising a pyrrolidyl group and use of these derivatives for dyeing keratin fibres
US6946005B2 (en) 2002-03-27 2005-09-20 L'oreal S.A. Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers

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US10130787B2 (en) 1997-06-17 2018-11-20 Fisher & Paykel Healthcare Limited Humidity controller
US20040221844A1 (en) * 1997-06-17 2004-11-11 Hunt Peter John Humidity controller
CA2617287C (en) 1997-06-17 2011-11-15 Fisher & Paykel Healthcare Limited Respiratory humidification system
US6009869A (en) * 1997-12-29 2000-01-04 Allegiance Corporation Supersonic nozzle nebulizer
US6123324A (en) * 1998-08-21 2000-09-26 Air Products And Chemicals, Inc. Process for humidifying a gas stream
US6149137A (en) * 1998-11-02 2000-11-21 Callidus Technologies, Inc. Method and apparatus for quenching hot flue gases
DE19947609C1 (de) * 1999-10-04 2001-05-03 Univ Muenchen Tech Vorrichtung zur Erzeugung von Ein- oder Mehrkomponenten-Prüfgas organisch-chemischer Stoffe
FR2817472B1 (fr) * 2000-12-06 2003-01-03 Oreal Composition de teinture d'oxydation a base de 1-(4-aminophenyl)pyrrolidines substituees au moins en position 2 et 3 et procede de teinture de mise en oeuvre
FR2817474B1 (fr) * 2000-12-06 2003-01-03 Oreal Composition de teinture d'oxydation a base de 1-(4-aminophenyl) pyrrolidines substituee en position 2 et procede de teinture de mise en oeuvre
FR2817471B1 (fr) * 2000-12-06 2005-06-10 Oreal Composition de teinture d'oxydation a base de 1-(4-aminophenyl) pyrrolidines substituees en position 3 et 4 et procede de teinture de mise en oeuvre
AU2002242304A1 (en) * 2001-02-28 2002-09-12 Porter Instrument Company, Inc. Manifolded fluid delivery system
US7132534B2 (en) * 2002-07-05 2006-11-07 L'oreal Para-phenylenediamine derivatives containing a pyrrolidyl group, and use of these derivatives for coloring keratin fibers
US8616532B2 (en) * 2005-12-22 2013-12-31 Donovan B. Yeates Flow conditioner for a compact, low flow resistance aerosol generator
US20100201006A1 (en) * 2009-02-12 2010-08-12 Lee Ron C Method and apparatus for stable and adjustable gas humidification
JP2010236700A (ja) * 2009-03-30 2010-10-21 Orion Mach Co Ltd 温湿度調整装置
TWI363653B (en) * 2009-09-07 2012-05-11 Univ Nat Chiao Tung Wetted wall venturi scrubber with a 2-stage venturi throat

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FR1157164A (fr) * 1956-08-04 1958-05-27 Renault Procédé de préparation d'un mélange d'azote et de vapeur de produits organiques pour réaliser une atmosphère de traitement thermique
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US4038980A (en) * 1973-11-12 1977-08-02 Imre Fodor Air humidifiers
FR2558737A1 (fr) * 1984-01-30 1985-08-02 Siderurgie Fse Inst Rech Generateur de gaz humide
FR2564566A1 (fr) * 1984-05-17 1985-11-22 Carboxyque Francaise Procede et appareil pour fournir sous pression un melange de co2 et de so2 ou un melange analogue
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DE1249223B (de) * 1967-09-07 C. A. Norgren Co., Englewood, Col. (V. St. A.) Aerosol-Erzeuger
US2060166A (en) * 1934-11-12 1936-11-10 Bowen William Spencer Fluid treating mechanism and method
FR1009750A (fr) * 1948-10-11 1952-06-03 Hygiene Scient Lab Générateur d'aérosols
US2709577A (en) * 1951-07-28 1955-05-31 Nat Welding Equipment Co Oxygen therapy humidifier
FR1093703A (fr) * 1952-12-12 1955-05-09 Stamicarbon Procédé et installation pour le réglage de la composition d'un mélange d'un gaz et d'une vapeur
FR1157164A (fr) * 1956-08-04 1958-05-27 Renault Procédé de préparation d'un mélange d'azote et de vapeur de produits organiques pour réaliser une atmosphère de traitement thermique
US4038980A (en) * 1973-11-12 1977-08-02 Imre Fodor Air humidifiers
FR2558737A1 (fr) * 1984-01-30 1985-08-02 Siderurgie Fse Inst Rech Generateur de gaz humide
FR2564566A1 (fr) * 1984-05-17 1985-11-22 Carboxyque Francaise Procede et appareil pour fournir sous pression un melange de co2 et de so2 ou un melange analogue
WO1988001195A1 (en) * 1986-08-19 1988-02-25 Antonio Sola Compressed air modifier
US4913856A (en) * 1988-02-04 1990-04-03 Dri-Steem Humidifier Company Humidifier system

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0559259A1 (de) * 1992-03-06 1993-09-08 Berkin B.V. Verfahren zur Transformierung eines Flüssigkeitsstromes in einen Gasstrom und Vorrichtung zur Durchführung dieser Verfahren
US5431736A (en) * 1992-03-06 1995-07-11 Bronkhorst High-Tech B.V. Method for transforming a liquid flow into a gas flow and a device for implementing the method
US6322775B1 (en) 1996-03-22 2001-11-27 L'oreal S.A. Cosmetic compositions containing pyrazolin-4,5-diones, novel pyrazolin-4,5-diones, preparation methods therefor and uses thereof
US6379395B1 (en) 1996-03-22 2002-04-30 L'oreal S.A. Pyrazolopyrimidinoxo-containing compositions for dyeing keratin fibres; their use in dyeing as couplers; dyeing processes
US6210447B1 (en) 1996-03-22 2001-04-03 L'oreal Compositions containing pyrazolin-3,5-dione couplers for use in keratin fiber dyeing methods and kits
US6231623B1 (en) 1996-03-22 2001-05-15 L'oreal S.A. Methods of dyeing keratin fibers with compositions containing pyrazolo-azole couplers
US6238440B1 (en) 1996-03-22 2001-05-29 L'oreal S.A. Keratin fibre dye compositions containing pyrrolo-azole compounds, use thereof as couplers, and dyeing method
US6551360B2 (en) 1996-03-22 2003-04-22 Laurent Vidal Pyrazoline-3,5-dione-containing compositions for dyeing keratin fibres; their use in dyeing as couplers; dyeing process
US6165229A (en) * 1996-03-22 2000-12-26 L'oreal Imidazoloazole-containing compositions for dyeing keratin fibers; their use in dyeing as couplers; dyeing process
US6179882B1 (en) 1996-03-22 2001-01-30 L'oreal Keratin fibre dye composition containing pyrazolopyrimidinoxo compounds, use thereof as dye couplers, and dyeing methods
US6391063B1 (en) 1998-11-20 2002-05-21 L'oreal Composition for the oxidation dyeing of keratin fibers and dyeing process using this composition
US6395042B1 (en) 1998-11-20 2002-05-28 L'oréal Composition for the oxidation dyeing of keratin fibers and dyeing process using this composition
US6702863B1 (en) 1999-06-22 2004-03-09 Lion Corporation Hairdye composition
WO2001068043A2 (fr) 2000-03-14 2001-09-20 L'oreal Compositions pour la teinture des fibres keratiniques contenant des derives de paraphenylenediamine a groupement pyrrolidinyle
US6946005B2 (en) 2002-03-27 2005-09-20 L'oreal S.A. Pyrrolidinyl-substituted para-phenylenediamine derivatives substituted with a cationic radical, and use of these derivatives for dyeing keratin fibers
US6923835B2 (en) 2002-09-09 2005-08-02 L'oreal S.A. Bis-para-phenylenediamine derivatives comprising a pyrrolidyl group and use of these derivatives for dyeing keratin fibres

Also Published As

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DE69111762D1 (de) 1995-09-07
JPH04288418A (ja) 1992-10-13
US5249740A (en) 1993-10-05
FR2669555B1 (fr) 1993-07-23
EP0488909B1 (de) 1995-08-02
FR2669555A1 (fr) 1992-05-29
ATE125728T1 (de) 1995-08-15
CA2054800A1 (fr) 1992-05-28
DE69111762T2 (de) 1996-02-08

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