DE1619158A1 - Aerosol for the impregnation of clothing - Google Patents

Description

Aerosol for impregnating clothing. This invention relates based on an aerosol composition for treating garments and other: s Fabrics to give them improved properties. Infested in particular the present invention with an Aprosol 'composition for treatment of-garments and fabrics to make them water repellent. The invention also consists of the improved methods of treating Garments and other fabrics using the M- # aerosol compositions of the invention.

The aerosol compositions of this invention can be used for prevention of sweat stains advantageously on the forearm sections of items of clothing such as B. blouses and dresses are sprayed. The treatment can also be applied to ties, Upholstery, carpets, etc. can be used to retard staining. Since the improved treatment is water-repellent, it can also be used for this purpose used for fabrics. Thus, rainwear can be what its water-repellent Has lost property, after-treated with the compositions according to the invention will.

Processes and materials used for treating entire garments and amounts of substance used for the impregnation are known and the invention is not intended for this purpose. Treatment of clothing and The consumption of other substances poses a number of particular problems be solved by the invention. 1.) It is very important that the Application is simple and suitable for home use. Two-part systems, heat curing and long curing cycles are difficult to carry out: 2.) It should be the treatment do not leave any areas p on the fabric. This is usually no problem when the entire fabric is treated. However, if only part of it is the treatment is subjected, the staining could not be avoided before the invention. Across the field, the treatment of the refractive index of the substance changed so that between the treated and untreated sections at least one barely noticeable difference occurred: 3.) Should the treatment take the "grip" of the Do not change the fabric. In general, the tissue became somewhat after application stiffer.

@ 4.) Should the treatment with heat, sunlight, with washing or dry cleaning or ironing no change or. Destruction of the tissue or its color.

A number of home products are currently available to the Market, which retard staining or water-repellent properties own. These are supplied in aerasol vases for easy handling. Frequently they contain the active agent in the form of a silicon copolymer, which when applied further polymerizes the fabric. However, the polymer needs to be 6 'hours or more before discontinue use. If, therefore, the application to avoid sweat stains Should be applied to the forearms of an item of clothing, the spray must be applied for many hours be sprayed on before wearing the garment.

Experience has also been made that these products look good The fabric on the treated area will change and tend to stiff the fabric close. As these products are slightly acidic as needed for curing they can have a detrimental effect on the colors of the fabrics and have a tendency a stain too. leave behind. Relatively thick when on a fine fabric is applied, the stain resulting from the application can be just as evident appear as like the sweat stain that it is supposed to prevent. These Spotting is inherent in the active ingredient.

In addition, the commercially available species mentioned above suffer from which polymerize on the fabric, under one further disadvantage, in that washing or dry cleaning does not completely remove them. With repeated use, they condense on the fabric to wrap it up give objectionable appearance and sharpness.

Objects and advantages of the invention are set forth here and go also emerges from the application of the invention "which is by the in the pending The steps, methods and compositions set forth in the claims be achieved.

The invention consists of those illustrated and described herein novel steps, processes and compositions.

The object of the invention is to provide improved aerosol compositions for impregnating clothing or other fabrics.

Another object of the invention is to provide improved aerosol compounds to produce stain resistance in clothing and other fabrics provide for most if not all of the adverse effects of the already known Aerasol products that serve the same purpose = avoid. One Another object of the invention is to provide improved aerosol compositions for treating clothes and other fabrics to prevent stains, including the sweat stains.

Another object of this invention is to provide improved ones Aerosol compounds that are suitable for household use and are easy for consumers to use, can be sprayed onto clothing and other fabrics for the purpose of impregnation, without needing a curing time. Another object of this invention is to provide improved aero-sol compositions for use with clothing and other fabrics to give them stain resistance, without staining or substantially staining the handle and / or color of the fabric to change or the fabric in heat radiation, sunlight, when washing or dry cleaning and ironing to damage.

Another object of this invention is to provide one Aerosol composition which is sprayed onto a garment to impregnate it but can be removed by washing and dry cleaning., so that unwanted accumulation on the garment is avoided Which give it an objectionable appearance and harshness. .

Further objects of the invention are to improve the method the treatment of substances in order to achieve the objectives set in the preceding tasks.

'It was discovered that: the objectives of this invention through education an aerosol compound (and treatment of clothing and fabrics with it Connection) can be realized, this being an essential part contains a powder with colloidal dimensions and the surface of the powder is hydrophobic is. The aerosol compounds of this invention can generally be used as dispersions hydrophobic powder with collƒidalen dimensions. Preferably are such dispersions in the form of dolens (colloidal cracks). Be the preparation of the Aer®sol compounds of this invention is the hydrophobic powder in a suitable Liquid finely divided and the resulting dispersion is then in a hermetically sealed container, which is used to produce a fine spray has a trigger and valve, pressurized. After spraying the Dispersion of the hydrophobic powder on the fabric and a waiting time of some Minutes during which the carrier liquid evaporates, the Brushed fabric to remove excess powder. Then the garment can be worn.

Due to the use of the aerosol compounds of this invention There is no hardening time for the impregnation of clothing and other fabrics required and have the treated and untreated surfaces of the fabrics essentially the same "feel" and appearance.

As already indicated above, a principal feature of the present invention in the application of a powder of colloidal size - less than 0, 1 micron in diameter - in place of the conventional liquid active ingredients for impregnation. The powder is sprayed onto the fabric in the form of an aerosol and the excess is removed by brushing. Due to the fine particle size of the powder in addition to the force exerted by the propellant in the aerosol as well as the brushing, the hydrophobic powder particles become embedded in and coat the fabric effectively so that the surface properties of the fabric become quite similar to those of the powder. Since the powder has a hydrophobic surface, the substance is also hydrophobic or water-repellent. The powder shows no staining whatsoever. After the powder has been applied to the fabric, it is recommended that the treated area be brushed. Although brushing is not essential, it indicates that sufficient material has been applied and it also essentially restores the fabric to its original feel. The powders that can be used in the practice of this invention are neither soluble nor fine in water. dispersible and insoluble but finely dispersible in organic liquids used to form the aerosol composition. Preferably they are white or nearly white in color. They have an average particle size of 0.1 microns or less, generally 9.01-0.10 microns. Typical powders which are available in this particle size and which can be used are silica, calcium silicate, aluminum oxide and clay powder, the surface of which has been provided with a hydrophobic coating.

Before a hydrophobic coating is applied, the above-mentioned powders are hydrophilic and ineffective as a water and stain-repellent agent. In order to achieve the desired water-repellent effect, it is therefore essential that they are subjected to a hydrophobic surface treatment. That means the powders have to be coated like that. that they are no longer wetted by water.

Any used to create a hydrophobic surface Treatment can be used on the powders. General impregnation procedures for substances are also valid for these powders. Thus, there is a novel feature this invention in that the water repellent treatment is applied to the powder is instead on the fabric and that the hydrophobic powder is then sprayed onto the fabric will.

Method of treating hydrophylic powders to make them hydrophobic are known and any of these known methods can be carried out of the invention can be used. The following is exemplary. Hydrophnbe powder can be caused by the absorption of a long-chain, polar compound on the surface the powder to be prepared. Most of the colloidal powders available commercially wear z. B. a negative charge when finely dispersed in a polar liquid will. Long-chain amine salts and quaternary ammonium compounds ionize, see above that the ion with a large molecular weight carries a positive charge. These materials will be very strongly absorbed by the negatively charged powders, to create a hydrophobic surface. -Where the calloidal powder has a positive Carries charge when it is finely divided in a liquid becomes a soap like z. B. Strongly absorb sodium stearate to form a hydrophobic surface.

A hydraphobic surface can also be created by you add the powder to the vapors of a silane such. B. Dimethyldichlorosilan or Dimathyldiäthoxysilan suspends. The silane polymerizes in the presence of traces of moisture on the Surface of the powder to form a hydrophobic silica surface.

Chromium coordination compounds of higher saturated fatty acids or Saturated perfluoromonocarboxylic acids can also be used for this To give powders a hydrophobic coating. These procedures are carried out by Dlu Pant liuilon and by U.S. Patent No. 2,662,835. Generally speaking, silicone and fluorocarbon treatments for surfaces that are both D1 and water repellent are.

Typical commercially available hydrophobic powders; the with The hydrophobically treated ones can be used for excellent results colloidal silica sold under the trademarks Nalco CD 100 and QUISO M 51 sold. Nalco CD-100 is a particle size colloidal silica of approximately 0.02 microns, which is organic to create a hydrophobic surface has been changed. The colloidal silica (silicon oxide) is mixed with a mixture from branched chain alcohols, which have an average of 10 carbon atoms, mixed and heated until a strong bond between the alcohol and the silica comes about.

QUISO M-51 is a colloidal silica, particle size approximately 0.1 micron, which is coated with silicone to create a hydrophobic surface became. Another example of a hydrophobic powder useful in the present invention is a hydrophobic clay sold under the trademark Benton 34. Benton 34 is the reaction product of bentonite and dimethyldistearyl ammonium chloride, the latter forming a third of the consumption compound. As mentioned earlier, you can the aerosol compounds of this invention are generally hydrophobic as dispersions Powders are referred to as having colloidal dimensions and they are preferably located in the shape of a sol. In the aerosol system of the present Invention is the liquefied propellant `part of the solvent system that is used to Fine distribution of the hydrophobic powder is used and the distribution capacity of the powder depends at least in part on the choice of solution system. if the particles are so finely dispersed that the system can be classified as a sol the system shows only a slight haze or haze and the particles will either not settle, although the dispersion is untouched for months stays or they will precipitate as a coacervate. When this dispersion When sprayed on the garment, it gives the fabric a water-repellent effect Ability to do it-but little if no white powder on the fabric be seen. When the same hydrophobic powder is finely dispersed in a solvent system. becomes less effective in dispersing the powder into its individual particles the dispersion appears more opaque than cloudy. Hit slide particles settles within a few hours and the precipitate will be white. In the sword set in addition, the coacervate has a colloidal dispersion that precipitates a gelatinous consistency and is transparent. If the hydrophobic Powder has not passed finely, making the dispersion more opaque than cloudy or the particles are transparent in the form of agglomerates or drusen the liquid is present. A product of this kind also gives excellent results Impregnation when applied to clothing. It leaves on the Fabric a white film that can be easily removed by brushing.

Reference has already been made to the need to use hydrophobic powders with colloidal dimensions. Many hydrophobic powders with larger particle sizes, around 1 to 30 microns, are available. Examples are polyethylene and plastisol types of polyvinyl chloride. These can be diepersed in a non-soluble agent, pressurized and sprayed onto a garment. A white powder will form, which can easily be removed by brushing. The garment, however, will not have any water repellent properties.

The manufacture of products in aerosol form is now a bpEanntea specialty. Any suitable propellant can be used: Lc33 cidc = r, a propellant combination, F. FitlrfhrLOt`f, #ii: .caE @ s + c @ ffc: f ° fydol, carbon .--, Loffdioxyd " n-butane, .Is®butany monofluorotrichloromethane, difluorodichloromethane and tetrafluorochloroethane. If the propellant gas does not liquefy in the container, the addition is so high that it generates an internal pressure of approximately 4.9 kg / cm 2 at 21 ° C. However, if the propellant liquefies, a propellant combination is preferably selected which is such that the internal pressure of the complete connection in the container at 21 ° is between 1'D5 and 5.25 kg / cm 2. The internal pressures listed are of course not limiting as to the functionality of the product, but merely represent appropriate preferred values. True limitations apply to both the size and strength of the container actually used and to applicable government regulations.

As noted above, the amount of non-dissolving propellant used is determined by pressure controls. Yes, the more volatile the propellant in the liquid section and the greater the construction height of the container, the more propellant that can be used.

In general, the proportion of the hydrophobic powder of about 595-25 Cew .-% and vzw. 1.0 ® 1D% of the total compound.

In the case where the propellant is under its own pressure in the Liquefying containers, the amount used can vary over a wide range. Thus, the propellant combination can only be the only one used in the compound Be liquid. Second, the propellant can only contain 5 or 10 wt% of the compound represent. In general, however, the spray is dry if a large proportion of the Connection is driving. When the propellant is only a small part of the compound turns out to be wet sprays. Compounds in which the propellants 25 - 75 of the liquid form in the compound are preferred. In some applications such as B. in the prevention of sweat stains, a material can also be used that has an antibacterial effect. Materials that are particularly suitable for this are suitable, the chlorinated phenol derivatives such. B. hexachlorophene and eithional.

Examples 1-14 follow to further illustrate the invention. In the preparation of these compounds, the hydrophobic powder is finely divided into the least volatile liquid present by mechanical stirring. It is then pressurized in an aerosol container in a conventional manner. Example 1% by weight Na @ coCD-100 5- Methyl chloroform 30 Monofluorotrichloromethane - 30 Difluorodichloromethane 35 Example 2 Nalco CD-100 3 Methyl chloroform 55 Difluorodichloromethane 42 Example 3 Nalco CO-100 1 manofluorotrichloromethane 311 Difluorodichlarme'thane 69 Example 4 Nalca CD-100 10 Perchlar ethylene 50 Difluorodichloromethane 40 Example 5% by weight Nalco CD-100 3 perchlorethylene 30 Manafluor trichloromethane 35 Difluorodichloromethane 32 Example 6 Nalco CD-100. 490 Methyl chloroform 3Q'0 Hexachlorophene By2, Ethanol 4.0 Monofluorotrichloromethane _ 30yQ Difluorodichloromethane 31y8 Example i Nalca CO-100 590 Hexachlorophene 032 Difluorotetrachloroethane 48'8 Ethanol 6.0 Difluorodichloromethane 40y0 Example 8 'üBW.-°@ö Nalco CD-100 4.0 Hexachlorophene 092 Trifluorotrichloroethane 49.8 Ethanol 620 Difluorodichloromethane 4020 Example 9 Nalco CD-100 590 Hexachlarophene 023 Perchlorethylene 2420 Plethylcthloro form 2097 Difluardichloromethane 50x0 Example 10 Nalco CD-100 3'0 Hexachlarophene 0f3 Perchlar ethylene 1590 Methyl chloroform 1197 Difluorodichlarmethane 70.0 Example 11% by weight Nalco C0-100 4.5 Hexachlorophene 0? 2 Isopropanol 6120 Difluorotetrachloroethane 49.3 .Difluorodichloromethane 4090 Example 12 Nalco CD-100 420 Trichlorethylene - 4120 Fluorotrichloromethane 2020 Difluorodichloromethane 3590 Example 13 Benton No. 34 2.0 Trichlorethylene 6590 Difluorodichloromethane 33.0 Example 14 QU50 M-51 590 Methyl chloroform 4590 Fluoro trichloromethane 15.0 Difluorodichloromethane 35'0 The invention in its greatest aspects is not limited by the specific steps, methods and compositions described, but deviations can be made therefrom within the scope of the broad claims without having to depart from the basic ideas of the invention and without sacrificing its main advantages have to.

Claims (6)

P a t e n t a n s p r ü c h e 1. Aerosol connection for use when treating clothing and other fabrics for the purpose of impregnation The same, given a dispersion of a hydrophobic Powder with colloidal dimensions in a liquid carrier, this compound contains a pressure generating propellant. 2. aerosol compound according to claim 1, d a d u r c h e k e n n n z e i c h n a -t. that it is in the form of a sol. 3. Aerosol compound according to claim 1, d u r c h e k e n n n e i c h n e t that the hydrophobic powder was chosen from the group of hydrophobic silicas and clays will. 4. Aerosol compound according to claim 1, d a d u r c h g e k e n n z e i c h n e t that at least -a part of the liquid carrier by means of a propellant is in the form of a liquefied gas. 5. Aerosol compound according to claim 1, characterized in that the liquefied gas "is a chlorofluorocarbon. 6. Method of treatment of garments and other substances that are not marked by the application of a hydrophobic powder with colloidal dimensions smaller than that of a propellant generated force.