EP1102835B1 - Verfahren zur verminderung des feinteilchenanteils eines pulverigen produktes sowie gewebereinigungsmittel daraus hergestellt - Google Patents

Verfahren zur verminderung des feinteilchenanteils eines pulverigen produktes sowie gewebereinigungsmittel daraus hergestellt Download PDF

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Publication number
EP1102835B1
EP1102835B1 EP99937518A EP99937518A EP1102835B1 EP 1102835 B1 EP1102835 B1 EP 1102835B1 EP 99937518 A EP99937518 A EP 99937518A EP 99937518 A EP99937518 A EP 99937518A EP 1102835 B1 EP1102835 B1 EP 1102835B1
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EP
European Patent Office
Prior art keywords
composition
particulates
millimeters
blending
particle size
Prior art date
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EP99937518A
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English (en)
French (fr)
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EP1102835A1 (de
Inventor
Thomas Mikic
Heather Rae Schramm
Hans J. Weitkuhn
Dolores T. Rodriguez
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SC Johnson and Son Inc
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SC Johnson and Son Inc
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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
    • C11D3/48—Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • C11D11/0088—Special methods for preparing compositions containing mixtures of detergents ; Methods for using cleaning compositions one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads the liquefied ingredients being sprayed or adsorbed onto solid particles
    • 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
    • C11D17/0034—Fixed on a solid conventional detergent ingredient
    • 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
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • 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
    • C11D3/43—Solvents

Definitions

  • the present invention relates to methods of reducing fines in powdered products, and more particularly to a method of reducing fines in powdered textile treating compositions, and powdered textile treating compositions prepared by the method.
  • Household cleaning compositions are often supplied in a liquid or a powdered form.
  • carpet cleaning compositions have been widely available for some time in both liquid and powdered form.
  • Liquid carpet cleaning compositions have typically been the first choice of many consumers.
  • dry powdered carpet cleaning compositions have become quite popular. Examples of dry powdered carpet cleaning compositions can be found in U.S. Patent Nos. 4,666,940, 4,552,777, 4,493,781, 4,395,347 and 4,161,449.
  • Fines typically contain particles of small size and low density known as "fines" that can readily become airborne. Fines can be very irritating to nasal passages. In addition, a large number of fines in the ambient air can build up a static charge.
  • fines may be difficult to vacuum. Also, the fines that are removed may not remain trapped inside a typical paper vacuum cleaner bag. As a result, a dust cloud of fines may develop during vacuuming that can be irritating to the nasal passages. In addition, the fines may leave an unsightly residue on shoes, clothing and surfaces in the home.
  • U.S. Patent Nos. 4,161,449 and 4,552,777 disclose a conventional process for preparing a dry carpet cleaning composition from dry powdered components.
  • a typical dry powdered carpet cleaning composition may include a dry powder inorganic salt carrier, a dry powder anti-caking agent, a liquid fragrance and a liquid dedusting agent.
  • Typical inorganic salt carriers include sodium sulfate, sodium chloride, sodium carbonate, sodium bicarbonate, sodium borate, sodium citrate, sodium tripolyphosphate and sodium nitrate; suitable anti-caking agents include starch, silica powders, grain flours, wood flour, talc, pumice, clays, and calcium phosphates; conventional fragrances are liquid volatile odorous agents including essential oils and aromatic chemicals; and typical liquid dedusting agents may be alkyl phthalates, mineral oil, glycols, ethoxylated alcohols, alcohols, glycol ethers, vegetable oils, naphtha, mineral spirits and naphthalene sulfonates.
  • improved methods of blending and agglomerating powdered products can be used to reduce fines in a final powdered product without the need for dedusting agents or screening techniques. Accordingly, these improved methods can be used to produce a particulate textile fiber or fabric cleaning composition that satisfies the need for a dry textile cleaning composition that has a minimal level of fines.
  • Agglomeration is the process of bringing together fine powders or particulates into larger masses with pressure, agitation and/or other mechanisms.
  • Agglomerating techniques include: (1) pressure compacting, such as briquetting, tableting and using a pellet mill; (2) tumbling or granulation; and (3) spray congealing.
  • pressure compacting such as briquetting, tableting and using a pellet mill
  • tumbling or granulation In the context of dry powdered or particulate household cleaning chemicals, tumbling or granulation is typically the process of choice.
  • a method for producing a particulate textile fiber or fabric cleaning composition that includes the steps of introducing at least one particulate material into a mixing vessel, introducing at least one liquid material into the mixing vessel to form a mixture, blending the mixture for a first time period, chopping the mixture for at least a portion of the first time period, and thereafter blending the mixture without chopping for a second time period.
  • the method produces a particulate fabric cleaning composition having acceptable flow characteristics yet results in a reduced level of fines without the need for a screening step to remove fines.
  • fabric includes natural and/or synthetic fiber products such as carpets, upholstery, drapes, and even clothing.
  • chopping creates greater surface area (which is otherwise lessened by mixing liquid with solids) and that the greater area permits fine particles of the particulate materials (such as silica fines in a dry carpet cleaning composition) to become attached to the larger particles in the mix by agglomeration.
  • the inclusion of a time period of blending and chopping the mixture serves to agglomerate particles and at the same time break up any large agglomerated particles that might clog the container.
  • the blending serves to agglomerate smaller particles while the chopping serves to breakup larger oversized agglomerations. This helps to distribute any liquid materials and to create additional exposed sticky surfaces to which fines may attach. It is particularly desirable to reduce particles in the size range of 200 mesh (0.074mm opening) and finer.
  • the chopping process is a high shear mixing that generally shears large agglomerated particles at the liquid interface between particles. However, individual particles may shear through the particle body. Therefore, as used herein, the term " chopping" refers to an action that can shear particle agglomerations at a liquid-solid interface or a solid-solid interface.
  • the step of introducing liquid material into the mixing vessel and the step of blending and chopping the mixture for a first period of time may all be performed simultaneously.
  • the liquid material may be added to the mixing vessel in any manner, it is preferred that the liquid materials be introduced into the mixing vessel at a uniform flow rate, most preferably by a sprayer that provides a spray in order to produce a uniform powder.
  • acceptable flow characteristics for a fabric cleaner means that the composition may be dispensed without clogging from conventional shaker-type containers that are widely used for packaging household cleaning compositions and have outlets of about 5 millimeters in diameter.
  • One version of a particulate textile fiber or fabric cleaning composition produced in accordance with the invention includes at least 80% by weight of inorganic salt carrier particulates, 1-10% by weight of flow agent particulates, and 0.1-15% by weight of a liquid active material selected from fragrances, surfactants, solvents pesticides, and mixtures thereof.
  • the liquid may comprise 1-10% by weight of an acaricidal agent.
  • Other standard fabric cleaner additives may also be included
  • At least 90% of the composition particulates have a particle size greater than 0.105 millimeters.
  • the composition may be applied without dusting to natural or synthetic textile fibers or fabric and removed by vacuuming.
  • compositions of the invention are particularly and beneficially adapted for use in the cleansing of pile fabrics of the type knitted or woven principally into yarns or fibers.
  • the compositions are believed most useful in the treatment of rugs and carpets.
  • the formed textile fabric may be of vegetable, synthetic or animal origin, including mixtures thereof.
  • Typical synthetic fabrics which may be beneficially treated by the present composition include viscose rayon, acetate rayon, polyamide, polyester polyolefin and acrylic.
  • Other fibers of a vegetable or animal origin which can be treated include cotton, jute, ramie, and wool.
  • the compositions of the present invention may also be designed for maintaining textile fabrics by including vacuuming aids.
  • the cleaning composition is applied to the surface, allowed to stand (e.g. a few minutes to a few hours) and thereafter removed by vacuuming.
  • the composition may be applied to the carpet by sprinkling from a shaker type container or through the use of any conventional particulate dispensing means.
  • liquid active material preferably designates a material that provides active properties to a particulate textile fiber or fabric cleaning composition.
  • the liquid active material used in the textile fiber or fabric cleaning composition may be a fragrance for odor control, a surfactant for cleaning, a solvent for cleaning, or a pesticide for pest control, such as an acaricide for control of mites and ticks.
  • the liquid active materials may be: (1) a fragrance, such as a liquid volatile odorous agent including essential oils and aromatic chemicals; (2) a solvent suitable for cleaning textile fibers, such as an ether alcohol (e.g., ethylene glycol monomethyl ether); (3) a surfactant or surfactant mixture suitable for cleaning textile fibers selected from any of the four basic groups of surface active agents including anionic (such as alkali metal salts of sulfate esters or sulfonates containing higher aliphatic hydrocarbon radicals of 8 or more carbon atoms), non-ionic (such as polyethylene oxide condensates of aliphatic alcohols having 8 or more carbon atoms), cationic (such as quaternary ammonium compounds), and amphoteric (such as tertiary amine oxide salts having a hydrophobic radical attached to the nitrogen atom); (4) an acaricide, such as benzyl benzoate; or (5) mixtures of any of the above listed liquid active materials.
  • a fragrance such as
  • suitable particulate carriers are inorganic salt carriers such as sodium sulfate, sodium chloride, sodium carbonate, sodium bicarbonate, sodium borate, sodium citrate, sodium tripolyphosphate, sodium nitrate and mixtures thereof.
  • suitable flow agents include silica, metal oxides such as alumina, and metal titanates.
  • One version of a particulate fabric cleaning composition made in accordance with the present invention includes at least 80% by weight of inorganic salt carrier particulates, 1-10% by weight of flow agent particulates, and 0.1-15% by weight of liquids selected from the group consisting of fragrances, surfactants, solvents, pesticides, and mixtures thereof, wherein at least 90% of the composition particulates have a particle size greater than 0.105 millimeters.
  • a preferred version is as hereinafter set forth in claim 10.
  • One version of the method of the invention is a method for producing a fabric cleaning composition that includes the steps of introducing at least one particulate material into a mixing vessel, introducing at least one liquid material into the mixing vessel to form a mixture, blending the mixture for a first time period, chopping the mixture for at least a portion of the first time period, and thereafter blending the mixture without chopping for a second time period, wherein at least 90% of the resulting composition is particulates having a particle size greater than 0.105 millimeters.
  • An exemplary embodiment of the most preferred version of the composition is produced by: (1) adding 71 wt% sodium sulfate, 20 wt% sodium bicarbonate and 4 wt% hydrated amorphous silica to a ribbon blender having chopper blades; (2) adding a combination of 4.6 wt% liquid benzyl benzoate and 0.4 wt% liquid fragrance to the blender while mixing; (3) mixing with ribbons for a total of 2 minutes (or longer if needed to complete the transfer of liquid to the product); (4) mixing with ribbons and high speed chopper blades for 2.5 minutes; (5) turning off the chopper blades and continuing to mix with ribbons for 5.5 more minutes; (6) mixing with chopper blades and ribbons for 0.5 minutes; and (7) turning off the chopper blades and continuing to mix with ribbons for 5 minutes. In certain circumstances, mix times may be extended to accommodate raw materials with more fines.
  • a mix and chop step may be run for 1 minute, and then a mix step may be run for two minutes. These extra steps may be repeated as needed. However, it is preferred that every mix and chop step be followed by a blending step without chopping so that any fines generated by the chopping process can be allowed to agglomerate in the further mixing step. It should be noted that this specific embodiment and the Examples that follow are illustrative in nature and should not be used to limit the scope of the invention.
  • the process can be facilitated by use of a paddle mixer equipped with high speed flat or tulip chopper blades or a ribbon blender equipped with high speed flat or tulip chopper blades.
  • a paddle-type mixer is a " Marion" brand paddle mixer equipped with a chopper, and is available from Marion Mixer Company, Marion, Iowa, USA.
  • a suitable ribbon blender has a horizontal 'U' shaped container complete with agitator ribbons and chopper blades, and is available from American Process Systems, Gurnee, Illinois, USA. The inner and outer ribbons operate in opposite directions to provide an even movement of material and effect a homogeneous blend.
  • the paddle mixer or ribbon blender motors should be sized appropriately for the density of the final dry carpet cleaning formulation.
  • Suitable mixers or blenders include: (1) a 1.7m 3 (60 cubic foot) capacity unit with a 75 horsepower main motor and four 20 horsepower chopper blades; and (2) a 2.83m 3 (100 cubic foot) unit with a 100 horsepower main motor and four 20 horsepower chopper blades. All process equipment (including blender, chopping blades and filling equipment) are preferably clean and dry before starting the process, as water may adversely affect the product.
  • the level of particle agglomeration was evaluated using a " Shake and Smoke” test and a sieve test.
  • a Shake and Smoke test approximately 113.4g (4 ounces) of material were placed in an 226.8g (8 ounces) glass jar and the jar is sealed. The jar is then shaken vigorously by hand. The jar is opened immediately and observed to determine whether any dust particles rise out of the container (i.e., the material " smokes” ).
  • the " Shake and Smoke” test evaluates the dustiness of a product.
  • a typical sieve test involves loading 100 grams of sample into the sieve tester and using U.S. Standard Sieve sizes 20 (0.84mm, opening), 40 (0.42mm), 60 (0.25mm), 80 (0.177mm), 100 (0.149mm), 120 (0.125mm), 140 (0.105mm), 170 (0.088mm), 200 (0.074mm), and 230 (0.062 mm) to separate the particles by size.
  • a dry carpet cleaning composition was prepared using the following ingredients: Ingredient Weight kg (lbs.) Wt.% SODIUM SULFATE, ANHYDROUS (Carrier) 96.6 (213.0) 71.00 SODIUM BICARBONATE, COARSE GRANULAR (Carrier) 27.2 (60.0) 20.00 BENZYL BENZOATE (Acaricide) 5.4 (12.0) 4.60 SILICA, HYDRATED AMORPHOUS (Flow agent) 6.3 (13.8) 4.00 FRAGRANCE (Fragrance RB 1907/A manufactured by Takasago International CorD.) 0.54 (1.2) 0.40 136.04 (300.00) 100.00
  • the dry ingredients sodium sulfate, sodium bicarbonate and silica
  • a ribbon blender such as the ribbon blender described above.
  • the benzyl benzoate was inspected for visible evidence of crystallization, as it is preferred that the benzyl benzoate be completely liquid. If needed, the temperature of the benzyl benzoate may be raised to 75° ⁇ 5°F (23° ⁇ 2°C) to reverse any crystallization.
  • the liquid fragrance and the benzyl benzoate were then mixed together and poured over the dry ingredients in the ribbon blender.
  • the ingredients were then mixed in the ribbon blender in the following sequence: (1) 2 minutes of ribbon blending; (2) 2.5 minutes of ribbon blending with chopper blades turned on; (3) 5.5 minutes of ribbon blending; (4) 0.5 minutes of ribbon blending with chopper blades turned on; and (5) 5 minutes of ribbon blending.
  • the dry powdered carpet composition produced by this method was evaluated using the " Shake and Smoke" test described above, and no " smoking" was evident.
  • the sodium sulfate and sodium bicarbonate were charged to the ribbon blender and subjected to 4 minutes of ribbon blending.
  • the liquid ingredients (benzyl benzoate and fragrance) were mixed together and applied to the sodium sulfate and sodium bicarbonate as a spray mist using a pressurized spray vessel with fine conical-style nozzles while all of the ingredients were subjected to 3 minutes of ribbon blending.
  • the ingredients were then subjected to 1 minute of ribbon blending with chopper blades turned on.
  • the silica was then added to the ribbon blender and the ingredients were subjected to 3 minutes of ribbon blending with chopper blades turned on.
  • the ingredients in the ribbon blender were then subjected to 5 minutes of ribbon blending.
  • a sample was obtained from the blender and it was discovered by visual inspection that adding the liquid ingredients through a spray device produced a more homogenous mixture than the mixture of Example 1.
  • a carpet cleaning composition was prepared using the ingredients listed in Example 1 and another method of blending and agglomerating the ingredients.
  • the dry ingredients (sodium sulfate, sodium bicarbonate and silica) were first added to the ribbon blender and then the liquid ingredients (benzyl benzoate and fragrance) were mixed together and sprayed over the dry ingredients in the ribbon blender while ribbon blending.
  • the spray was a uniform, coarse spray from a planar fan-style nozzle.
  • the ingredients were mixed in the ribbon blender in the following sequence: (1) 2 minutes of ribbon blending during application of the liquid spray; (2) 2.5 minutes of ribbon blending with chopper blades turned on; (3) 5.5 minutes of ribbon blending; (4) 0.5 minutes of ribbon blending with chopper blades turned on; and (5) 5 minutes of ribbon blending.
  • the dry powdered carpet composition produced by this method was evaluated using the " Shake and Smoke” test described above after 10, 10.5, 13.0 and 15.5 minutes of blending according to the blending sequence.
  • the " Shake and Smoke” test produced the following results: (1) after 10 minutes of blending (which included 2.5 minutes of chopping beginning after two minutes), the " smoking" of the composition began to disappear; (2) after 10.5 minutes of blending, the " smoking” of the composition reappeared as a result of the chopping process; and (3) after 13 and 15.5 minutes of blending, the " smoking" of the composition had disappeared. Agglomeration of the powder was acceptable after 10 minutes.
  • a batch of dry carpet cleaner was prepared using the ingredients of Example 1 and the following sequence of steps.
  • the dry ingredients sodium sulfate, sodium bicarbonate and silica
  • the liquid ingredients benzyl benzoate and fragrance
  • the ingredients were mixed in the ribbon blender in the following sequence: (1) 2 minutes of ribbon blending during application of the liquid spray, which took 50 seconds at 103.4kPa (15 psi); (2) 2.5 minutes of ribbon blending with chopper blades turned on; (3) 5.5 minutes of ribbon blending; (4) 0.5 minutes of ribbon blending with chopper blades turned on; and (5) 5 minutes of ribbon blending.
  • Samples of the dry powdered carpet composition were taken from the blender after 10, 11, 11.5 and 15.5 minutes of blending according to the blending sequence. The samples were evaluated using the sieve test described above, i.e. 100 grams of each sample were placed into the sieve tester and separated by size using U.S. Standard Sieve sizes 20 (0.84 millimeter opening), 40 (0.42 mm.
  • the level of fines (as defined by particles passing through the 170 sieve) varies depending on the stage of the blending/chopping process. For example: (1) after 10 minutes of blending/chopping according to the blending sequence (i.e., 2 minutes of ribbon blending, 2.5 minutes of ribbon blending with chopping, and 5.5 minutes of ribbon blending), 3.7 grams of the composition passed through the 170 sieve; (2) after 11 minutes of blending/chopping (i.e., 2 minutes of ribbon blending, 2.5 minutes of ribbon blending with chopping, 5.5 minutes of ribbon blending, 0.5 minutes of ribbon blending with chopping, and 0.5 minutes of ribbon blending), 5.1 grams of the composition passed through the 170 sieve; (3) after 11.5 minutes of blending/chopping (i.e., 2 minutes of ribbon blending, 2.5 minutes of ribbon blending with chopping, 5.5 minutes of ribbon blending, 0.5 minutes of ribbon blending with chopping, and 1 minute of ribbon blending), 2.0 grams of the composition
  • the variation in the level of fines throughout the blending/chopping process can likely be explained as follows. After 10 minutes of blending/chopping according to the blending sequence, the method of the present invention produces a composition having an acceptable level of fines as demonstrated by the " Shake and Smoke" test performed in Example 3 above. The level of fines (as defined by particles passing through the 170 sieve) was 3.7% (3.7 grams for a 100 gram sample) after 10 minutes. In the first 10 minutes of the blending sequence, the ingredients are subjected to blending, blending with chopping, and blending.
  • the level of fines rose to 5.1%. This indicates that the 0.5 minute period of blending and chopping after the first 10 minutes of blending and chopping serves to break up large agglomerations and free up fines.
  • the level of fines decreased to 2.0%. This indicates that the use of a blending/chopping step and a blending step after the initial 10 minutes of the blending/chopping sequence serves to further lower the level of fines in the composition. After 15.5 minutes of the blending/chopping sequence, the fines have been effectively eliminated.
  • the data in the above table also indicates that the carpet cleaning powder produced in the examples will be free flowing powders that are acceptable for dispensing in shaker-type containers used in the carpet cleaning field. In addition, the carpet cleaning powder will have reduced level of fines.
  • substantially all of the particles have a particle size less than 0.42 millimeters.
  • the method produces a particulate carpet cleaning product having a low level of fines as measured by the sieve test, but at the same time avoids producing a carpet cleaning product with large agglomerations that hinder dispensing from shaker-type containers used in the field.
  • a batch of dry carpet cleaner was prepared using the ingredients of Example 1 and the following sequence of steps.
  • the dry ingredients sodium sulfate, sodium bicarbonate and silica
  • the liquid ingredients benzyl benzoate and fragrance
  • the spray was a coarse spray from a planar fan-style nozzle.
  • the ingredients were mixed in the ribbon blender in the following sequence: (1) 2 minutes of ribbon blending during application of the liquid spray; (2) 3.5 minutes of ribbon blending with chopper blades turned on; and (3) 20.5 minutes of ribbon blending. Samples of the dry powdered carpet composition were taken from the blender after blending and evaluated using " Shake and Smoke" test described above.
  • the method of the present invention may be readily utilized with currently known filling techniques and production equipment for granular or powdered treating compositions.
  • carpet cleaning compositions produced by the present method may be applied to a carpet by sprinkling from a shaker type container or through the use of any conventional particulate dispensing means.

Claims (21)

  1. Teilchenförmige Stoff- bzw. Gewebe-Reinigungszusammensetzung, die umfasst:
    mindestens 80 Gew.-% anorganische Salz-Trägerteilchen;
    1 bis 10 Gew.-% Fließmittel-Teilchen und
    0,1 bis 15 Gew.-% Flüssigkeiten, ausgewählt aus der Gruppe, die besteht aus Duftstoffen, Tensiden, Lösungsmitteln, Pestiziden und Mischungen davon,
    wobei mindestens 90 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,105 mm aufweisen.
  2. Zusammensetzung nach Anspruch 1, worin mindestens 95 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,105 mm aufweisen.
  3. Zusammensetzung nach Anspruch 1, worin mindestens 99 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,105 mm aufweisen.
  4. Zusammensetzung nach Anspruch 1, worin mindestens 90 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,125 mm aufweisen.
  5. Zusammensetzung nach Anspruch 1, worin mindestens 99 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,125 mm aufweisen.
  6. Zusammensetzung nach Anspruch 1, in der die Flüssigkeit 1 bis 10 Gew.-% eines acariciden Agens umfasst.
  7. Zusammensetzung nach Anspruch 6, in der das acaricide Agens Benzylbenzoat ist.
  8. Zusammensetzung nach Anspruch 1, in der die Fließmittel-Teilchen Siliciumdioxid umfassen.
  9. Zusammensetzung nach Anspruch 1, in der die anorganischen Salz-Trägerteilchen ausgewählt sind aus der Gruppe, die besteht aus Natriumsulfat, Natriumbicarbonat und Mischungen davon.
  10. Pulverförmige Teppichreinigungszusammensetzung, die umfasst:
    mindestens 80 Gew.-% anorganische Salz-Trägerteilchen, ausgewählt aus der Gruppe, die besteht aus Natriumsulfat, Natriumchlorid, Natriumcarbonat, Natriumbicarbonat, Natriumborat, Natriumcitrat, Natriumtripolyphosphat, Natriumnitrat und Mischungen davon;
    1 bis 10 Gew.-% Siliciumdioxid;
    1 bis 10 Gew.-% Benzylbenzoat; und
    0,1 bis 5 Gew.-% eines Duftstoffes,
    wobei mindestens 90 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,105 mm aufweisen.
  11. Zusammensetzung nach Anspruch 10, in der mindestens 99 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,105 mm und von < 0,42 mm aufweisen.
  12. Zusammensetzung nach Anspruch 10, in der mindestens 99 % der Teilchen der Zusammensetzung eine Teilchengröße von > 0,125 mm und von < 0,42 mm aufweisen.
  13. Verfahren zur Herstellung einer Stoff- bzw. Gewebe-Reinigungszusammensetzung, das die Stufen umfasst:
    a) Einführung mindestens eines teilchenförmigen Materials in einen Mischbehälter;
    b) Einführung mindestens eines flüssigen Materials in den Mischbehälter zur Bildung einer Mischung;
    c) Durchmischen der Mischung für eine erste vorgegebene Zeitspanne;
    d) Zerhacken der Mischung für mindestens einen Teil der ersten vorgegebenen Zeitspanne; und
    e) anschließendes Durchmischen der Mischung ohne Zerhacken für eine zweite vorgegebene Zeitspanne;
    wobei mindestens 90 % der resultierenden Zusammensetzung Teilchen mit einer Teilchengröße von > 0,105 mm sind.
  14. Verfahren nach Anspruch 13, worin das teilchenförmige Material einen anorganischen Salz-Träger und ein Fließmittel umfasst.
  15. Verfahren nach Anspruch 13, worin mindestens 95 % der resultierenden Zusammensetzung Teilchen mit einer Teilchengröße von > 0,105 mm sind.
  16. Verfahren nach Anspruch 13, worin mindestens 99 % der resultierenden Zusammensetzung Teilchen mit einer Teilchengröße von > 0,105 mm sind.
  17. Verfahren nach Anspruch 13, worin die Zusammensetzung ohne eine Klassierungs- bzw. Siebungsstufe gebildet wird.
  18. Verfahren nach Anspruch 13, worin die Stufen (b) und (c) gleichzeitig durchgeführt werden.
  19. Verfahren nach Anspruch 13, worin das flüssige Material mittels einer Sprüheinrichtung in den Mischbehälter eingeführt wird.
  20. Verfahren nach Anspruch 13, worin die Stufe (d) in einem Bandmischer mit Zerhacker-Schaufeln durchgeführt wird.
  21. Verfahren nach Anspruch 13, worin die Stufe (d) in einem Paddelmischer mit Zerhacker-Schaufeln durchgeführt wird.
EP99937518A 1998-07-31 1999-07-28 Verfahren zur verminderung des feinteilchenanteils eines pulverigen produktes sowie gewebereinigungsmittel daraus hergestellt Expired - Lifetime EP1102835B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US9484798P 1998-07-31 1998-07-31
US94847P 1998-07-31
PCT/US1999/016960 WO2000006681A1 (en) 1998-07-31 1999-07-28 Method of reducing fines in a powdered product and fabric cleaner produced therefrom

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EP1102835A1 EP1102835A1 (de) 2001-05-30
EP1102835B1 true EP1102835B1 (de) 2002-10-16

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JP (1) JP2002521556A (de)
KR (1) KR20010071058A (de)
AR (1) AR018961A1 (de)
AT (1) ATE226243T1 (de)
AU (1) AU749030B2 (de)
BR (1) BR9912615A (de)
CA (1) CA2339169C (de)
DE (1) DE69903564D1 (de)
NZ (1) NZ509527A (de)
WO (1) WO2000006681A1 (de)
ZA (1) ZA200101049B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2825896B1 (fr) * 2001-06-19 2005-02-11 Solvay Poudre acaricide
KR20040019483A (ko) * 2002-08-28 2004-03-06 정근식 분말세제 조성물 및 그 제조방법
GB0520524D0 (en) * 2005-10-10 2005-11-16 Reckitt Benckiser Nv Flowable carpet cleaning composition containing hydrogen peroxide
US7261742B2 (en) * 2005-10-13 2007-08-28 S.C. Johnson & Son, Inc. Method of deodorizing a textile
US7407922B2 (en) * 2005-10-13 2008-08-05 S.C. Johnson & Son, Inc. Deodorizing compositions

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2064575B (en) * 1979-12-04 1983-06-22 Airwick Ag Powdered carpet cleaner
GB2109399A (en) * 1981-11-18 1983-06-02 Kent Chemical Company Limited Composition
DE3430611A1 (de) * 1984-08-20 1986-02-20 Werner & Mertz Gmbh, 6500 Mainz Mittel zur abtoetung von hausstaubmilben und dessen verwendung
US4566980A (en) * 1985-01-16 1986-01-28 Creative Products Resource Associates, Ltd. Carpet treating composition
US5286400A (en) * 1993-03-29 1994-02-15 Eastman Kodak Company Flowable powder carpet cleaning formulations

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AU749030B2 (en) 2002-06-20
CA2339169A1 (en) 2000-02-10
ZA200101049B (en) 2001-08-14
ATE226243T1 (de) 2002-11-15
DE69903564D1 (de) 2002-11-21
JP2002521556A (ja) 2002-07-16
CA2339169C (en) 2005-06-14
BR9912615A (pt) 2001-10-23
AR018961A1 (es) 2001-12-12
EP1102835A1 (de) 2001-05-30
WO2000006681A1 (en) 2000-02-10
NZ509527A (en) 2002-06-28
AU5233399A (en) 2000-02-21
KR20010071058A (ko) 2001-07-28

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