EP0282395A1 - Dry stain removal - Google Patents

Dry stain removal Download PDF

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Publication number
EP0282395A1
EP0282395A1 EP88400472A EP88400472A EP0282395A1 EP 0282395 A1 EP0282395 A1 EP 0282395A1 EP 88400472 A EP88400472 A EP 88400472A EP 88400472 A EP88400472 A EP 88400472A EP 0282395 A1 EP0282395 A1 EP 0282395A1
Authority
EP
European Patent Office
Prior art keywords
powder
stain
container
absorbent
freon
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.)
Withdrawn
Application number
EP88400472A
Other languages
German (de)
French (fr)
Inventor
Joseph Jahchan
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.)
SPADO-LASSAILLY
Original Assignee
SPADO-LASSAILLY
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 SPADO-LASSAILLY filed Critical SPADO-LASSAILLY
Publication of EP0282395A1 publication Critical patent/EP0282395A1/en
Withdrawn legal-status Critical Current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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0031—Carpet, upholstery, fur or leather cleansers
    • 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
    • C11D17/0043—For use with aerosol devices

Definitions

  • the present invention relates to the problem of avoiding this halo.
  • stain removers made up of a fat-absorbing powder.
  • the powder is contained in a container pierced with holes, which make it possible to sprinkle the stained part, the powder being removed by brushing after a sufficient action time.
  • These stain removers avoid halos but do not always have sufficient effectiveness.
  • the present invention makes it possible to solve the problem and is essentially characterized in that the absorbent or adsorbent powder, used in a state of fine particle size, is forcefully projected onto the stain by a gas under pressure.
  • the dry powder can be contained in a container fitted with a spray tube and containing the pressurized gas which propels the powder through the tube when the valve with which it is provided is opened. Under the effect of the propellant pressure of the gas, the powder particles acquire sufficient kinetic energy to become encrusted in the stain, their action being thus optimal.
  • the gas used must be inert enough not to affect the absorbent properties of the powder. This gas should also have a fairly low boiling temperature compared to the lower limit of ambient temperature so as not to pass into a stable liquid phase under the cooling effect of the expansion at the outlet of the sprayer, so that the droplets that can form during relaxation vaporize quickly.
  • the gas will be nitrogen, freon 11®, freon 12® or a mixture of these gases.
  • the suitable powder will consist of particles with a high specific surface, of the order of, for example, 200 to 300 m2 per gram, such as silicate of magnesia, preferably a silicate with a fibrous structure, such as Sommière earth or else colloidal silica or fuller's earth or Lycopod powder or clays specially treated to be made lipophilic such as bentones and organophilic bentonites.
  • Its particle size must be fine, for example such that it gives a rejection of about 10% to the sieve 20 of AFNOR, which corresponds substantially to a grain size less than 20 microns for the powder passing through the sieve.
  • the powder spray tube and nozzle will be of sufficient diameter to avoid clogging by grain agglomeration. A diameter of 0.08 mm may be suitable.
  • Colloidal silica having a specific surface of 250 m2 per g, in sufficient quantity to fill the container to 10% of its capacity. Then by a valve nozzle we finished filling the container above the powder by a mixture of freon 11® and 12® under a pressure of approximately 3 bars.
  • the spray tube was directed towards the stain and by opening the valve, powder was sprayed over the entire surface of the stain so to cover it completely. After half an hour the powder was removed by brushing. It was found that the spot has disappeared and that there is no halo.
  • the colloidal silica was replaced, under the same conditions of filling the container, by a mixture, in equal parts by weight, of fuller's earth and colloidal silica with a specific surface area equal to 300 m2 / g approximately and the mixture of freon 11-12 with nitrogen under the pressure of approximately 3 bars.
  • the powder was sprayed onto a cloth with a spot of butter. After half an hour, the powder was removed by brushing. It was found that the importance of the stain had greatly decreased, but that the stain was still apparent. We then renewed the powder projection. After another half hour, we brushed to remove the powder. The stain had disappeared without a halo.
  • butane could be added to the gas mixture in a proportion not exceeding 20% by volume.

Landscapes

  • 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)
  • Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
  • Medicinal Preparation (AREA)
  • Cosmetics (AREA)

Abstract

Stain removal by means of an absorbent or adsorbent powder. The powder is sprayed onto the stain with force under the effect of propulsion of an inert gas under pressure. Application to all stain removals, domestic and industrial.

Description

Comme on le sait, de nombreux détachants du commer­ce laissent sur le tissu, après enlèvement de la tache, une auréole plus ou moins étendue d'aspect désagréable qu'il est difficile d'enlever.As is known, many commercial stain removers leave on the fabric, after removal of the stain, a more or less extensive halo of unpleasant appearance which is difficult to remove.

La présente invention concerne le problème d'éviter cette auréole.The present invention relates to the problem of avoiding this halo.

Il existe déjà des détachants à sec constitués par une poudre absorbant les graisses. Pour l'usage, la poudre est contenue dans un récipient percé de trous, qui permet­tent de saupoudrer la partie tachée, la poudre étant élimi­née par brossage après un temps d'action suffisant. Ces détachants évitent les auréoles mais n'ont pas toujours une efficacité suffisante.There are already dry stain removers made up of a fat-absorbing powder. For use, the powder is contained in a container pierced with holes, which make it possible to sprinkle the stained part, the powder being removed by brushing after a sufficient action time. These stain removers avoid halos but do not always have sufficient effectiveness.

En étudiant la question, la Demanderesse a pensé que ceci était dû au fait que le contact de la poudre et de la tache n'est pas suffisamment intime pour que la pou­dre joue convenablement sa fonction absorbante ou adsorbante.While studying the question, the Applicant thought that this was due to the fact that the contact of the powder and the stain is not intimate enough for the powder to properly play its absorbent or adsorbent function.

La présente invention permet de résoudre le problè­me et se caractérise essentiellement en ce que la poudre absorbante ou adsorbante, utilisée dans un état de fine granulométrie, est projetée avec force sur la tache par un gaz sous pression.The present invention makes it possible to solve the problem and is essentially characterized in that the absorbent or adsorbent powder, used in a state of fine particle size, is forcefully projected onto the stain by a gas under pressure.

La poudre sèche peut être contenue dans un récipient muni d'un tube de pulvérisation et contenant le gaz sous pression qui propulse la poudre à travers le tube quand on ouvre la valve dont il est muni. Sous l'effet de la pression propulsive du gaz, les particules de poudre acquièrent une énergie cinétique suffisante pour qu'elles s'incrustent dans la tache, leur action étant ainsi optimale.The dry powder can be contained in a container fitted with a spray tube and containing the pressurized gas which propels the powder through the tube when the valve with which it is provided is opened. Under the effect of the propellant pressure of the gas, the powder particles acquire sufficient kinetic energy to become encrusted in the stain, their action being thus optimal.

Le gaz utilisé doit être assez inerte pour ne pas altérer les propriétés absorbantes de la poudre. Il convient aussi que ce gaz ait une température d'ébullition assez basse par rapport à la limite inférieure de la température ambiante pour ne pas passer en phase liquide stable sous l'effet réfrigérant de la détente à la sortie du pulvérisa­teur, de sorte que les goutelettes qui peuvent se former lors de la détente se vaporisent rapidement. Par exemple, le gaz sera de l'azote, du fréon 11®, du fréon 12® ou un mé­lange de ces gaz.The gas used must be inert enough not to affect the absorbent properties of the powder. This gas should also have a fairly low boiling temperature compared to the lower limit of ambient temperature so as not to pass into a stable liquid phase under the cooling effect of the expansion at the outlet of the sprayer, so that the droplets that can form during relaxation vaporize quickly. For example, the gas will be nitrogen, freon 11®, freon 12® or a mixture of these gases.

La poudre convenable sera constituée par des parti­cules à surface spécifique élevée, de l'ordre de, par exem­ple, 200 à 300 m² par gramme, telle que du silicate de ma­gnésie, de préférence un silicate à structure fibreuse, genre terre de Sommière ou encore de la silice colloïdale ou de la terre à foulon ou de la poudre de Lycopode ou des argiles spécialement traitées pour être rendues lipophiles comme les bentones et les bentonites organophiles. Sa gra­nulométrie doit être fine, par exemple telle qu'elle donne un refus de 10% environ au tamis 20 de l'AFNOR, ce qui correspond sensiblement à une grosseur de grain inférieure à 20 microns pour la poudre traversant le tamis. Le tube et l'ajutage de projection de la poudre auront un diamètre suffisant pour éviter une obstruction par agglomération de grains. Un diamètre de 0,08 mm peut convenir. Les exem­ples qui suivent donnés à titre non limitatif permettent de comprendre comment l'invention peut être réalisée.The suitable powder will consist of particles with a high specific surface, of the order of, for example, 200 to 300 m² per gram, such as silicate of magnesia, preferably a silicate with a fibrous structure, such as Sommière earth or else colloidal silica or fuller's earth or Lycopod powder or clays specially treated to be made lipophilic such as bentones and organophilic bentonites. Its particle size must be fine, for example such that it gives a rejection of about 10% to the sieve 20 of AFNOR, which corresponds substantially to a grain size less than 20 microns for the powder passing through the sieve. The powder spray tube and nozzle will be of sufficient diameter to avoid clogging by grain agglomeration. A diameter of 0.08 mm may be suitable. The examples which follow, given without limitation, make it possible to understand how the invention can be implemented.

Exemple 1Example 1

Dans un récipient fermé avec tube de pulvérisation, muni d'une valve et plongeant dans le récipient sensible­ment jusqu'au fond, du genre appelé "bombe pour aérosol", d'une contenance de 300 cm³, on a placé de la silice colloï­dale ayant une surface spécifique de 250 m²par g,en quanti­té suffisante pour remplir le récipient à 10% de sa capacité. Ensuite par un ajutage à soupape on a fini de remplir le récipient au-dessus de la poudre par un mélange de fréon 11® et 12® sous une pression de 3 bars environ.Colloidal silica having a specific surface of 250 m² per g, in sufficient quantity to fill the container to 10% of its capacity. Then by a valve nozzle we finished filling the container above the powder by a mixture of freon 11® and 12® under a pressure of approximately 3 bars.

Prenant alors un tissu de laine comportant une tache d'huile de 1,5 cm de diamètre, on a dirigé vers la tache le tube de pulvérisation et en ouvrant la valve on a projeté de la poudre sur toute la surface de la tache de manière à la recouvrir complètement. Au bout d'une demi-­heure on a éliminé la poudre par brossage. On a constaté que la tache a disparu et qu'il n'y a pas d'auréole.Then taking a woolen cloth comprising an oil stain of 1.5 cm in diameter, the spray tube was directed towards the stain and by opening the valve, powder was sprayed over the entire surface of the stain so to cover it completely. After half an hour the powder was removed by brushing. It was found that the spot has disappeared and that there is no halo.

Exemple 2Example 2

Prenant un récipient identique à celui de l'exemple 1 on a remplacé la silice colloïdale, dans les mêmes con­ditions de remplissage du récipient, par un mélange, en par­ties égales en poids,de terre à foulon et de silice colloï­dale de surface spécifique égale à 300 m²/g environ et le mélange de fréon 11-12 par de l'azote sous la pression de 3 bars environ. En ouvrant la valve du récipient on a pro­jeté la poudre sur un tissu comportant une tache de beurre. Au bout d'une demi-heure, on a enlevé la poudre par brossa­ge. On a constaté que l'importance de la tache avait forte­ment diminué, mais que la tache était encore apparente. On a alors renouvelé la projection de poudre. Au bout d'une nouvelle demi-heure d'attente, on a brossé pour enlever la poudre. La tache avait disparu sans auréole.Taking a container identical to that of Example 1, the colloidal silica was replaced, under the same conditions of filling the container, by a mixture, in equal parts by weight, of fuller's earth and colloidal silica with a specific surface area equal to 300 m² / g approximately and the mixture of freon 11-12 with nitrogen under the pressure of approximately 3 bars. By opening the valve of the container, the powder was sprayed onto a cloth with a spot of butter. After half an hour, the powder was removed by brushing. It was found that the importance of the stain had greatly decreased, but that the stain was still apparent. We then renewed the powder projection. After another half hour, we brushed to remove the powder. The stain had disappeared without a halo.

On a appliqué des traitements du même genre à une veste en cuir imitation daim comportant une tache de cam­bouis et à une chemise dont le col était encrassé par de la salissure grasse. Dans le premier cas on a renouvelé le traitement deux fois et dans le deuxième une fois, pour élimi­ner la tache, respectivement la salissure.Similar treatments were applied to a suede imitation leather jacket with a sludge stain and to a shirt whose collar was dirty with greasy dirt. In the first case, the treatment was repeated twice and in the second once, to remove the stain, respectively the soiling.

Diverses variantes peuvent être imaginées.Various variants can be imagined.

Ainsi, on pourrait ajouter au mélange gazeux du butane en proportion ne dépassant pas 20% en volume .Thus, butane could be added to the gas mixture in a proportion not exceeding 20% by volume.

Au lieu d'une bombe à aérosol, on pourrait, par exemple dans le cas de détachage industriel, avoir recours à un pistolet de projection.Instead of an aerosol can, for example in the case of industrial stain removal, use a spray gun.

Claims (6)

1. Procédé de détachage au moyen d'une poudre absorbante ou adsorbante déposée à sec sur la tache, sans addition de liquide, caractérisé en ce que le dépôt de la poudre se fait en la projetant avec force sous l'effort de propulsion d'un gaz inerte sous pres­sion.1. Stain removal process by means of an absorbent or adsorbent powder deposited dry on the stain, without addition of liquid, characterized in that the deposition of the powder is done by projecting it forcefully under the propelling force of an inert gas under pressure. 2. Procédé selon la revendication 1, caractérisé en ce que le gaz est de l'azote ou du trichlorofluoromé­thane (fréon 11) ou du dichlorodifluorométhane (fréon 12) ou du butane ou un mélange de ces gaz.2. Method according to claim 1, characterized in that the gas is nitrogen or trichlorofluoromethane (freon 11) or dichlorodifluoromethane (freon 12) or butane or a mixture of these gases. 3. Procédé selon la revendications 1 ou 2, caractérisé en ce que la poudre est choisie dans les matériaux suivants : silicate de magnésie, terre de Sommières, silice colloïdale, terre à foulon, poudre de lycopode.3. Method according to claims 1 or 2, characterized in that the powder is chosen from the following materials: magnesia silicate, Sommières earth, colloidal silica, fuller's earth, lycopod powder. 4. Procédé selon l'une des revendications précé­dentes, caractérisé en ce que la poudre a une surface spécifique de 200 à 300 m² par gramme.4. Method according to one of the preceding claims, characterized in that the powder has a specific surface of 200 to 300 m² per gram. 5. Procédé selon l'une des revendications précé­dentes, caractérisé en ce que la poudre a une grosseur de grains inférieure à 20 microns.5. Method according to one of the preceding claims, characterized in that the powder has a grain size less than 20 microns. 6. Un récipient à tube de pulvérisation et valve, genre bombe pour aérosol, utilisable pour la mise en oeuvre du procédé selon l'une des revendications précé­dentes, caractérisé en ce qu'il contient une charge de poudre absorbante ou adsorbante à fine granulométrie et surface spécifique élevée, qui garnit une partie du vo­lume du récipient et une charge propulsive de gaz inerte sous pression.6. A container with a spray tube and valve, such as an aerosol bomb, usable for implementing the method according to one of the preceding claims, characterized in that it contains a charge of absorbent or adsorbent powder with fine particle size and high specific surface, which fills part of the volume of the container and a propellant charge of inert gas under pressure.
EP88400472A 1987-03-02 1988-03-01 Dry stain removal Withdrawn EP0282395A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8702772 1987-03-02
FR8702772A FR2611760B1 (en) 1987-03-02 1987-03-02 PROCESS FOR DRY DETACHING BY SPRAYING ABSORBENT POWDER AND CONTAINER USED FOR THE IMPLEMENTATION OF THE PROCESS

Publications (1)

Publication Number Publication Date
EP0282395A1 true EP0282395A1 (en) 1988-09-14

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EP88400472A Withdrawn EP0282395A1 (en) 1987-03-02 1988-03-01 Dry stain removal

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EP (1) EP0282395A1 (en)
FR (1) FR2611760B1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426485A2 (en) * 1989-11-03 1991-05-08 Advanced Ceramics Corporation Powder coating compositions
EP0666053A1 (en) * 1994-02-03 1995-08-09 AEG Hausgeräte GmbH Floor treating device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1204102A (en) * 1957-10-16 1960-01-22 Stain remover and cleaning device including it
CH417831A (en) * 1962-11-22 1966-07-31 Aerosol Service Ag Means for removing stains from all kinds of fabrics
US3630919A (en) * 1969-06-02 1971-12-28 Colgate Palmolive Co Colloidal silica cleansing compositions and method
US3686125A (en) * 1969-10-24 1972-08-22 United States Banknote Corp Solvent absorbent method and product application
FR2401988A1 (en) * 1977-09-02 1979-03-30 Airwick Ag PULVERULENT COMPOSITION FOR CARPET MAINTENANCE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4304610A (en) * 1979-06-22 1981-12-08 S. C. Johnson & Son, Inc. Carpet cleaning method
DE3206146A1 (en) * 1982-02-20 1983-09-01 Vorwerk & Co Interholding Gmbh, 5600 Wuppertal AEROSOL CLEANER

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1204102A (en) * 1957-10-16 1960-01-22 Stain remover and cleaning device including it
CH417831A (en) * 1962-11-22 1966-07-31 Aerosol Service Ag Means for removing stains from all kinds of fabrics
US3630919A (en) * 1969-06-02 1971-12-28 Colgate Palmolive Co Colloidal silica cleansing compositions and method
US3686125A (en) * 1969-10-24 1972-08-22 United States Banknote Corp Solvent absorbent method and product application
FR2401988A1 (en) * 1977-09-02 1979-03-30 Airwick Ag PULVERULENT COMPOSITION FOR CARPET MAINTENANCE

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0426485A2 (en) * 1989-11-03 1991-05-08 Advanced Ceramics Corporation Powder coating compositions
EP0426485A3 (en) * 1989-11-03 1991-07-24 Union Carbide Coatings Service Technology Corp. Powder coating compositions
EP0666053A1 (en) * 1994-02-03 1995-08-09 AEG Hausgeräte GmbH Floor treating device

Also Published As

Publication number Publication date
FR2611760A1 (en) 1988-09-09
FR2611760B1 (en) 1989-12-01

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