CH343352A

CH343352A - Apparatus for removing stains

Info

Publication number: CH343352A
Authority: CH
Inventors: Vanoni Carlo
Original assignee: Chemiro Ag
Priority date: 1957-09-04
Filing date: 1957-09-04
Publication date: 1959-12-31

Description

Appareil pour Fenlevement de taches Jusqu'ä maintenant, an a utilise pour enlever, par un traitement localise, les taches salissant un objet (etoffe, papier, etc.), soit des detachants liquides appliques ä 1'aide d'un tampon, soit des poudres r6pandues sur les taches, soit encore des produits päteux appliques manuellement sur les endroits ta- ch6s. Toutes ces methodes ont un Maut commun, celui d'employer une quantite de produit detachant beaucoup trop grande par rapport ä celle n6cessaire ä 1'enlevement des taches. Apparatus for removing stains Until now, it has been used to remove, by a localized treatment, stains soiling an object (cloth, paper, etc.), either liquid stain removers applied with the aid of a pad, or powders spread over the stains, or pasty products applied manually to the stained areas. All these methods have a common drawback, that of using a quantity of stain-removing product which is far too great in relation to that necessary to remove the stains.

La presente invention remddie ä cet inconv6nient. Elle a pour objet un appareil pour 1'enlevement des taches, en particulier des taches se trouvant sur une etoffe, un papier, etc. The present invention overcomes this drawback. It relates to an apparatus for removing stains, in particular stains from fabric, paper, etc.

L'appareil selon 1'invention est caracterise par un recipient renfermant un gaz propulseur sous pression et une charge d'un produit d6tachant forme au moins en partie par un solvant organique et un corps solide pulverulent et absorbant, 1e tout de maniere ä per- mettre de chasser 1e produit d6tachant hors du r6ci- pient et de 1'appliquer par pulv6risation sur la tache ä enlever. The apparatus according to the invention is characterized by a container containing a pressurized propellant gas and a load of a stain-removing product formed at least in part by an organic solvent and a powdery and absorbent solid body, the whole in such a way as to perpetuate it. You must press the stain remover out of the container and apply it by spraying it to the stain to be removed.

Avec cet appareil, il est tres facile de ne projeter, sur la surface occup6e par la tache ä enlever, qu'une faible couche du produit d6tachant, juste suffisante pour qu'une partie du solvant dudit produit p6netre dans le corps tache, et y dissolve les matieres formant tache (graisses., tanin, chlorophylle, acides des fruits, colorants) et pour que ces matieres soient ensuite absorb6es par 1e corps solide pulverulent. Si 1e sol- vant est en partie ou en totalite volatile, 1e produit detachant skhera tont en restant applique sur la tache et, une fois sec, 1e corps solide pulverulent qui aura absorbe les matieres formant tache pourra eire enleve par brossage. Pour la projection et la pulvdrisation du produit ddtachant, 1e rdcipient peut etre uruni dune tuyere de pulverisation. Le gaz propulseur peut, ä 1'interieur du recipient, etre en partie ä 1'6tat liquide et m61ang6 au produit d6tachant. Dans un tel cas et si, ä 1'etat liquide, ledit gaz a des proprietds solvantes, il peut, en partie au moins, former 1e solvant constitutif du produit dAachant. With this device, it is very easy to project, on the surface occupied by the stain to be removed, only a thin layer of the stain-removing product, just sufficient for a part of the solvent of the said product to penetrate into the stain body, and dissolves stain-forming materials (fats, tannins, chlorophyll, fruit acids, dyes) and so that these materials are then absorbed by the powdery solid body. If the solvent is partially or totally volatile, the skhera stain remover must remain applied to the stain and, once dry, the powdery solid body which has absorbed the stain-forming materials can be removed by brushing. For the projection and spraying of the stain-removing product, the container can be fitted with a spray nozzle. The propellant gas may, inside the container, be partly in the liquid state and mixed with the stain-removing product. In such a case and if, in the liquid state, said gas has solvent properties, it can, at least in part, form the constituent solvent of the sample product.

Le gaz sous pression peut avantageusement etre un gaz facilement liqu6fiable par compression, comme, par exemple, un des produits marque Fr6on ou un RTI ID="0001.0273" WI="13" HE="4" LX="1350" LY="1686"> melange de tels produits, c'est-ä-dire de derivds chlores et fluor6s du mdthane ou de 1'ethane. Parmi les Frdon , celui r6pondant ä la formule CZC13F13 bout ä la pression atmosphdrique, ä 48o C ; en m61ange avec d'autres Fr6on plus volatils, il convient ä la fois comme gaz propulseur et comme solvant. The pressurized gas can advantageously be a gas that can easily be liquefied by compression, such as, for example, one of the Fr6on brand products or an RTI ID="0001.0273" WI="13" HE="4" LX="1350" LY=" 1686"> mixture of such products, that is to say of chlorine and fluorine derivatives of methane or ethane. Among the Frdon, the one corresponding to the formula CZC13F13 boils at atmospheric pressure, at 48o C; in mixture with other more volatile Fr6on, it is suitable both as a propellant and as a solvent.

Dans une forme d'execution de 1'appareil de 1'invention, ledit recipient est uruni dune tuyere de pulverisation et contient, sous pression, un corps solide pulv6rulent et absorbant, mdlangd ä un liquide volatil forme en totalit6 ou en partie par un solvant organique (par exemple melange de Frdon ) et dopt la partie volatile forme 1e gaz propulseur et la partie liquefiee 1e solvant. In one form of execution of the apparatus of the invention, said container is uruni a spray nozzle and contains, under pressure, a pulverulent and absorbent solid body, mixed with a volatile liquid formed in whole or in part by a solvent organic (for example Frdon mixture) and adopts the volatile part forms the first propellant gas and the liquefied part the solvent.

Le produit detachant peut contenir de 60 ä 95 %, de preference de 60 ä 80 %, en poids de solvant, ce dernier etant avantageusement un mdlange de plu- sieurs solvants liquides plus ou moins volatils. 0n peut citer, comme exemple, de tels solvants liquides 1e tetrachlorure de carbone, 1e trichlorethylene, 1'es- sence de point d'6bullition compris entre 800 et 1200 C, 1e benzene, les alcools 6thylique et isopro- pylique, 1e butyl-glycol-ether (C1Ho0 - C,H4 - OH), 1e propylene-glycol, etc. Comme corps solides pulv6- rulents et absorbants, an peut citer 1'amidon (de pommes de terre), la bentonite, 1e talc. Le produit d6tachant peut encore contenir un agent gdlifiant, comme 1e gel de silice, de meme que des charges, etc. The stain-removing product may contain from 60 to 95%, preferably from 60 to 80%, by weight of solvent, the latter advantageously being a mixture of several more or less volatile liquid solvents. Examples of such liquid solvents are carbon tetrachloride, trichlorethylene, gasoline with a boiling point between 800 and 1200 C, benzene, ethyl and isopropyl alcohol, butyl- glycol-ether (C1Ho0 - C,H4 - OH), propylene-glycol, etc. As pulverulent and absorbent solid bodies, mention may be made of (potato) starch, bentonite, talc. The stain remover may also contain a gelling agent, such as silica gel, as well as fillers, etc.

Lorsque 1e gaz propulseur est un gaz facilement liqu6fiable par compression, sa Partie liqu6fi6e se mdlange, dans 1e r6cipient, avec 1e ou les solvants constitutifs, du produit d6tachant. Le corps solide pulvdrulent et absorbant, constitutif du produit d6ta- chant, se trouve alors dispers6 dans un liquide ä bas point d'dbullition (par exemple inferieur ä 450 C) et qui pr6sente encore des propri6t6s solvantes des matieres formant tache. La quantite de ce liquide 6tant plus grande que celle de ou des solvants pro pres constitutifs du produit ddtachant, ce dernier se trouve fluidifi6, il passe par cons6q-uent facilement par la tuyere du pulv6risateur et peut encore contenir du gaz liqudfid lorsqu'il arrive sur 1'objet ä dAacher. When the propellant gas is a gas which is easily liquefied by compression, its liquefied part mixes, in the container, with the constituent solvent or solvents of the stain-removing product. The pulverulent and absorbent solid body, constituting the stain-removing product, is then dispersed in a liquid with a low boiling point (for example less than 450° C.) and which still has solvent properties for stain-forming materials. The quantity of this liquid being greater than that of the clean solvent(s) constituting the stain-removing product, the latter is fluidized, it consequently passes easily through the nozzle of the sprayer and may still contain liquefied gas when it arrives. on the object to be detached.

Voici, ä titre d'exemple, la composition d'un produit ddtachant de consistance päteuse Here, by way of example, is the composition of a paste-like stain remover

Parties en poids trichlor6thylene 28 essence lagere ----- . 25 benzene ........... 20 alcool dthylique .... 5 alcool isopropylique . 4 butyl-glycol-dther .... 5 amidon .... . .. . 17 gel de silice -------- 7 Pour 1'utilisation de ce produit päteux avec un appareil selon 1'invention, an Charge 100 g de la päte ci-dessus dans un r6cipient muni d'un robinet et place sur une balance. 0n introduit ensuite du Fr6on dans ce rkipient, en refroidissant rki- pient et Fr6on ä -300 C et en comprimant 1e Fr6on . Lorsque la balance indique que 100 g de Fr6on ont 6t6 introduits Jans 1e recipient, an ferme 1e robinet et an Equipe 1e recipient dune tuyere. L'appareil est alors pret ä projeter la päte qu'il contient en la pulv6risant. Parts by weight trichloroethylene 28 light gasoline ----- . 25 benzene ........... 20 ethyl alcohol .... 5 isopropyl alcohol . 4 butyl-glycol-dther .... 5 starch .... . .. . 17 silica gel -------- 7 For the use of this pasty product with an apparatus according to the invention, an Load 100 g of the above paste into a container equipped of a faucet and place on a scale. Fr6on is then introduced into this vessel, cooling the vessel and Fr6on to -300° C. and compressing the Fr6on. When the balance indicates that 100 g of Fr6on have been introduced into the container, close the tap and equip the container with a nozzle. The device is then ready to spray the paste it contains.

Claims

CLAIM Apparatus for removing stains, characterized by a receptacle containing a propellant gas under pressure and a charge of a stain-removing product formed at least in part by an organic solvent and a powdery and absorbent solid body, the whole to enable the stain product to be squeezed out of the container and sprayed onto the stain to be removed. SUB-CLAIMS 1. Apparatus according to claim, characterized in that said propellant gas is, in said container, partly in the liquid state and mixed with the product of the singing.

2. Apparatus according to claim, characterized in that at least one of the constituent solvents of the stain-removing product is volatile.

3. Apparatus according to claim and sub-claim 1, characterized in that RTI ID="0002.0263" WI="6" HE="4" LX="1679" LY="893"> that said propellant gas, partly in the liquid state, is formed at least partly by a chlord and fluorinated derivative of methane or ethane.

4. Apparatus according to claim, characterized in that said container is provided with a spray nozzle and contains, under pressure, a pulverulent and absorbent solid body, mixed with a volatile liquid formed in part by an organic solvent and containing the volatile forms the propellant gas.

5. Apparatus according to claim, characterized in that said organic solvent is formed at least in part by at least one of the following compounds trichlorAhylene, light gasoline, benzene, ethyl alcohol, isopropyl alcohol and butyl-glycol-dther.

6. Apparatus according to claim, characterized in that said stain-removing product contains a gelling agent.

7. Apparatus according to claim, characterized in that, in the first stain-removing product, the solvent or solvents form 60 to 80% by weight of this product. B. Apparatus according to claim and sub-claims 2 and 5, characterized in that the propellant gas is a chlorine and fluorine derivative of methane or ethane.