EP0349200B1 - Verfahren zur Herstellung konzentrierter Granulatkörner von oberflächenaktiven Mitteln - Google Patents

Verfahren zur Herstellung konzentrierter Granulatkörner von oberflächenaktiven Mitteln Download PDF

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Publication number
EP0349200B1
EP0349200B1 EP89306335A EP89306335A EP0349200B1 EP 0349200 B1 EP0349200 B1 EP 0349200B1 EP 89306335 A EP89306335 A EP 89306335A EP 89306335 A EP89306335 A EP 89306335A EP 0349200 B1 EP0349200 B1 EP 0349200B1
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Prior art keywords
paste
surfactant
granules
process according
granulation
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EP89306335A
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French (fr)
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EP0349200A3 (en
EP0349200A2 (de
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Daniel Louis Strauss
Charles Louis Stearns
Thomas Eugene Lobaugh
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Procter and Gamble Co
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Procter and Gamble Co
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Priority claimed from US07/213,575 external-priority patent/US4925585A/en
Priority claimed from US07/288,759 external-priority patent/US5080848A/en
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    • 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
    • C11D17/065—High-density particulate detergent compositions

Definitions

  • the present invention relates to a process for preparing concentrated (condensed) surfactant granules.
  • Granular surfactant compositions are principally prepared by spray or drum drying.
  • the surfactant components, plus perhaps salts and builders are mixed with as much as 35-50% water to form a slurry.
  • the slurry obtained is heated and spray dried, which is expensive.
  • Such spray drying requires 30-40 wt.% of the water to be removed.
  • the spray drying equipment used is expensive.
  • the granule obtained has good solubility but a low bulk density, so the packing volume is large.
  • the particles also may be sticky, particularly when hot, and thus wall buildup is an additional problem.
  • There are other known disadvantages in preparing granular materials by spray drying such as environmental concerns and heat sensitivity.
  • An agglomeration process would be cleaner, as well as less expensive, both in terms of equipment and operating costs.
  • a practical problem with the use of a surfactant acid form is that it requires immediate use after it is made, or cool temperature storage, for such highly reactive acids, such as the alkyl sulfate acids, are subject to degradation unless cooled. They also tend to undergo hydrolysis during storage, forming free sulfuric acid and alcohol. In practical terms, such prior art processes require close-coupling of surfactant acid production with granulation which requires an additional capital investment.
  • GB 2 171 414 A published on 28th August 1986, describes a process for making granules, especially anti-foam granules.
  • a liquid hydrocarbon is sprayed on to a core material to produce granules which are subsequently chilled prior to a classification step.
  • the present invention relates to an economical process for making a dense, concentrated surfactant granule from a high active surfactant paste using fine dispersion cold granulation.
  • An important object of the present invention is to make a dense and more concentrated surfactant granular product by an agglomeration process without an expensive drying step. Another object is to provide a more concentrated surfactant granule which can be stored and then admixed with other ingredients to provide a final end product. Another object of the process of this invention is to provide a formulated granule containing higher total surfactant levels than typically obtained via other means. Yet another object of the present invention is to prepare a very high active surfactant granule essential free of hydrated inorganic salts. Other objects of the present invention will be apparent in view of the following.
  • the process of the present invention comprises fine dispersion mixing and cooling of a high active surfactant paste to provide a very concentrated surfactant granule.
  • Most high active surfactant pastes are too tacky at normal mixing temperatures to successfully granulate using fine dispersion mixing. So the high active surfactant paste is cooled as needed to a granulation temperature while mixing. Large discrete particles (granules) are surprisingly formed right in the mixer. Thus “cold" granulation of a high surfactant past is achieved.
  • the granulation temperature ranges from -65°C to 25°C using a critical fine dispersion mixing tip speed of from 5 m/sec. to 50 m/sec. Dry ice is a preferred cooling means.
  • the preferred granules made according to the present invention are large, essentially pure surfactant granules. They preferably have a bulk density of from 0.4 to 1.1 g/cc, more preferably from 0.5 to 0.8 g/cc.
  • the weight average particle size of the preferred particles of this invention are from 200 to 2,000 microns.
  • the more preferred granules have a particle size range of from 300 to 1,200 microns. Yields of 25% to 85% in these ranges can be achieved.
  • a second brief mixing increases yields of granular particles in these preferred ranges. Oversized and undersized particles can also be recycled.
  • the more preferred granulation temperatures of the high active surfactant paste ranges from -40°C to 10°C, and most preferably from -30°C to 0°C. More details of the present invention are highlighted below.
  • the resultant surfactant granules made by the process of the present invention can comprise a combination of all, or substantially all, of the ingredients of the total composition or they can be used as an intermediate.
  • Such granules greatly reduce or even eliminate the need to admix additional materials for a final detergent formulation.
  • the possibility of segregation of ingredients during shipping, handling or storage is greatly reduced, especially if only minor quantities of other materials of differing particle sizes or densities are to be included.
  • the concentrated granule of this invention can be admixed with detergent granules produced by more conventional means to increase the total surfactant level in a final formulation.
  • Cooling jackets or coils can be integrated around or into the mixer. Chipped dry ice or liquid CO2 can be added or injected into the uniform paste. The idea is to lower the high active surfactant paste temperature to a granulation temperature so that it can be finely dispersed or "granulated" into discrete particles.
  • the paste temperature and the paste viscosity are important parameters of the high active surfactant pastes which can affect the parameters of the mixing and granulation step of the present invention.
  • the viscosity is a function of surfactant concentration and its temperature.
  • the high active surfactants of the present invention have viscosities which range from 10,000 cps to 10,000,000 cps; preferably, from 70,000 to 7,000,000 cps; and more preferably from 100,000 to 1,000,000 cps. These viscosities are measured at a temperature of about 50°C for the present invention.
  • the high active surfactant paste can be introduced into the mixer at an initial temperature in the range of 5-70°C, preferably 20-30°C. Higher temperatures reduce their viscosities but a temperature greater than 70°C can lead to poor initial mixing due to increased product stickiness.
  • the process of the present invention surprisingly forms large, but usable, granules, preferably in the 200 to 1200 micron range.
  • Such large granules are preferred, particularly if the surfactant granule is to be admixed with other materials which have a tendency to be dusty. Particles of similar size are preferred to minimize segregation. No extra grinding step is required or desirable.
  • larger particles are less dusty, which is important in many consumer applications, especially those which comprise porous, unitized dose pouch-like products.
  • Such porous products are designed: (1) to avoid consumer contact with the product and (2) to reinforce the convenience and nonmessiness perceptions of a unitized pouch form. If desired, granules of insufficient size can be screened after drying and recycled to the fine dispersion mixer.
  • fine dispersion mixing and/or “granulation,” as used herein are synonymous and mean mixing and granulating of a high active surfactant paste in a fine dispersion mixer using a blade tip speed of from 5 m/sec. to 50 m/sec.
  • the total residence time of the mixing and granulation process is preferably in the order of from 0.1 to 10 minutes, more preferably 0.5-8 and most preferably 1-6 minutes.
  • the more preferred mixing and granulation tip speeds are 10-40 m/sec. and 15-35 m/sec.
  • the Littleford® Mixer, Model #FM-130-D-12, with internal chopping blades and the Cuisinart® Food Processor, Model #DCX-Plus, with 7.75 inch (19.7 cm) blades are two examples of suitable mixers. Any other mixer with fine dispersion mixing and granulation capability and which preferably has a residence time in the order of 0.1 to 10 minutes can be used.
  • the "turbine-type" impeller mixer, having several blades on an axis of rotation, is preferred.
  • the invention can be practiced as a batch or a continuous process.
  • the mixer must finely disperse the paste and, if desired, the other ingredients. When the contents of the mixer are cooled, the mixing must be conducted at said fine dispersion tip speed in order to granulate the surfactant into discrete particles. Care must be taken not to use too low or too high of a tip speed at the granulation step. While not being bound to a theory, "too high a shear" is believed to prevent granulation because of a wide variety of stresses, e.g., a broader particle size distribution caused by the higher tip speeds with a higher level of fines generated. Also, too high of a tip speed increases the temperature of the material and additional cooling is required.
  • the work input required for fine dispersion mixing in the practice of the present invention varies with: (1) the type of fine dispersion mixer used, (2) the mixer loading level, (3) the viscosity of the paste material, and (4) the amount and the type of dry solids used, if any.
  • the corresponding Incremental Work varied from 0.93 to 6.05 Joules per gram (0.4 BTU's to 2.6 BTU's per pound) of paste material.
  • the No Load Work for the Cuisinart® food processor is about 0.21 kJ (0.2 BTU's) per second.
  • the Cuisinart® food processor has a single 19.7 cm flat horizontal propeller and is operated at 1800 rpm, which is a tip speed of about 18.55 m/sec.
  • the Total Work required to mix and granulate the surfactant paste of the present invention can vary from 7.0 to 70 Joules per gram (3 BTU's to 30 BTU's per pound) of material depending on viscosity, load, etc.
  • a preferred range is from 11.6 to 46.5 Joules gram (5 BTU's to 20 BTU's per pound). (These BTU ranges in kilogram of material are, respectively, from 6.6 to 66, and from 11 to 44 BTU/Kg).
  • Some benefits of fine dispersion mixing and granulation include: (1) a lower level of granulated fines; (2) a more uniform granular particle size distribution; and (3) a higher density granule than a granular product made with standard agglomeration-type mixers, such as pan-type mixers.
  • the activity of the aqueous surfactant paste is at least 50% and can go up to 98%; preferred activities are: 60-80% and 65-75%.
  • the balance of the paste is primarily water but can include a processing aid such as mineral oil.
  • the resultant concentrated surfactant granules can be added to dry detergency builders or conventionally agglomerated with binders with these builders or other materials to yield desired finished formula compositions.
  • moisture or solvent (hereinafter referred to as “moisture”) content of the high active surfactant should not exceed 50%.
  • the total moisture can range from 2% to 50%, but is preferably from 10% to 40%, and more preferably from 15% to 30%.
  • the lower granulation temperatures are used for the higher moisture-containing pastes. Conversely, the higher granulation temperatures can be used for lower moisture pastes.
  • Paste compositions which have lower moisture contents of below 5%, e.g., 1% to 4%, can contain an effective amount of an organic liquid solvent or processing aid.
  • organic liquid solvent or processing aid examples are selected from suitable organic liquid, including mineral oil, glycerin, short chain alcohols, and the like, and mixtures thereof.
  • the processing aid preferably can be used at a level of "0.5% to 20%," more preferably 1-10%; most preferably 2-5% by weight of the paste.
  • the desired moisture content of the surfactant granules of this invention can be adjusted by adding other desired dry ingredients prior to cooling and granulation. Thus, additional “drying" is unnecessary in low moisture formulations.
  • drying the discrete granules can be accomplished in a standard fluid bed dryer. The idea here is to provide a free flowing granule with a desired moisture content of 0.5-10%, preferably 1-5%.
  • the aqueous surfactant paste contains an organic surfactant selected from the group consisting of anionic, zwitterionic, ampholytic, nonionic and cationic surfactants, and mixtures thereof.
  • Anionic surfactants are preferred.
  • Surfactants useful herein are listed in U.S. Pat. No. 3,664,961, Norris, issued May 23, 1972, and in U.S. Pat. No. 3,919,678, Laughlin et al., issued Dec. 30, 1975.
  • Useful cationic surfactants also include those described in U.S. Pat. No. 4,222,905, Cockrell, issued Sept. 16, 1980, and in U.S. Pat. No. 4,239,659, Murphy, issued Dec. 16, 1980.
  • the following are representative examples of surfactants useful in the present compositions.
  • Water-soluble salts of the higher fatty acids are useful anionic surfactants in the compositions herein.
  • Soaps can be made by direct saponification of fats and oils or by the neutralization of free fatty acids.
  • Particularly useful are the sodium and potassium salts of the mixtures of fatty acids derived from coconut oil and tallow, i.e., sodium or potassium tallow and coconut soap.
  • Useful anionic surfactants also include the water-soluble salts, preferably the alkali metal, ammonium and alkylolammonium salts, of organic sulfuric reaction products having in their molecular structure an alkyl group containing from 10 to 20 carbon atoms and a sulfonic acid or sulfuric acid ester group.
  • alkyl is the alkyl portion of acyl groups.
  • this group of synthetic surfactants are the sodium and potassium alkyl sulfates, especially those obtained by sulfating the higher alcohols (C8-C18 carbon atoms) such as those produced by reducing the glycerides of tallow or coconut oil; and the sodium and potassium alkyl benzene sulfonates in which the alkyl group contains from 9 to 15 carbon atoms, in straight or branched chain configuration, e.g., those of the type described in U.S. Pat. Nos. 2,220,099 and 2,477,383.
  • Especially valuable are linear straight chain alkyl benzene sulfonates in which the average number of carbon atoms in the alkyl group is from 11 to 13, abbreviated as C11-C13 LAS.
  • anionic surfactants herein are the sodium alkyl glyceryl ether sulfonates, especially those ethers of higher alcohols derived from tallow and coconut oil; sodium coconut oil fatty acid monoglyceride sulfonates and sulfates; sodium or potassium salts of alkyl phenol ethylene oxide ether sulfates containing from 1 to 10 units of ethylene oxide per molecule and wherein the alkyl groups contain from 8 to 12 carbon atoms; and sodium or potassium salts of alkyl ethylene oxide ether sulfates containing from 1 to 10 units of ethylene oxide per molecule and wherein the alkyl group contains from 10 to 20 carbon atoms.
  • Other useful anionic surfactants herein include the water-soluble salts of esters of alpha-sulfonated fatty acids containing from 6 to 20 carbon atoms in the fatty acid group and from 1 to 10 carbon atoms in the ester group; water-soluble salts of 2-acyloxy-alkane-1-sulfonic acids containing from 2 to 9 carbon atoms in the acyl group and from 9 to 23 carbon atoms in the alkane moiety; alkyl ether sulfates containing from 10 to 20 carbon atoms in the alkyl group and from 1 to 30 moles of ethylene oxide; water-soluble salts of olefin sulfonates containing from 12 to 24 carbon atoms; and beta-alkyloxy alkane sulfonates containing from 1 to 3 carbon atoms in the alkyl group and from 8 to 20 carbon atoms in the alkane moiety.
  • the preferred anionic surfactant pastes are mixtures of linear or branched alkylbenzene sulfonates having an alkyl of 10-16 carbon atoms and alkyl sulfates having an alkyl of 10-18 carbon atoms. These pastes are usually produced by reacting a liquid organic material with sulfur trioxide to produce a sulfonic or sulfuric acid and then neutralizing the acid to produce a salt of that acid.
  • the salt is the surfactant paste discussed throughout this document.
  • the sodium salt is preferred due to end performance benefits and cost of NaOH vs. other neutralizing agents, but is not required as other agents such as KOH may be used.
  • the neutralization can be performed as part of the fine dispersion mixing step, but preneutralization of the acid in conjunction with the acid production is preferred.
  • Nonionic surfactants are also useful as surfactant in the compositions of the invention.
  • Many final detergent compositions include nonionics or nonionic/anionic surfactant blends. Inclusion of nonionics in many applications is difficult, particularly if a spray-dry process is used, because of potential degradation and environmental concerns.
  • a nonionic granule can thus be admixed with a spray-dry granule to produce a preferred final formulation.
  • Such nonionic materials include compounds produced by the condensation of alkylene oxide groups (hydrophilic in nature) with an organic hydrophobic compound, which may be aliphatic or alkyl aromatic in nature. The length of the polyoxyalkylene group which is condensed with any particular hydrophobic group can be readily adjusted to yield a water-soluble compound having the desired degree of balance between hydrophilic and hydrophobic elements.
  • Suitable nonionic surfactants include the polyethylene oxide condensates of alkyl phenols, e.g., the condensation products of alkyl phenols having an alkyl group containing from 6 to 16 carbon atoms, in either a straight chain or branched chain configuration, with from 4 to 25 moles of ethylene oxide per mole of alkyl phenol.
  • Preferred nonionics are the water-soluble condensation products of aliphatic alcohols containing from 8 to 22 carbon atoms, in either straight chain or branched configuration, with from 4 to 25 moles of ethylene oxide per mole of alcohol. Particularly preferred are the condensation products of alcohols having an alkyl group containing from 9 to 15 carbon atoms with from 4 to 25 moles of ethylene oxide per mole of alcohol; and condensation products of propylene glycol with ethylene oxide.
  • Semi-polar nonionic surfactants include water-soluble amine oxides containing one alkyl moiety of from 10 to 18 carbon atoms and 2 moieties selected from the group consisting of alkyl groups and hydroxyalkyl groups containing from 1 to 3 carbon atoms; water-soluble phosphine oxides containing one alkyl moiety of 10 to 18 carbon atoms and 2 moieties selected from the group consisting of alkyl groups and hydroxyalkyl groups containing from 1 to 3 carbon atoms; and water-soluble sulfoxides containing one alkyl moiety of from 10 to 18 carbon atoms and a moiety selected from the group consisting of alkyl and hydroxyalkyl moieties of from 1 to 3 carbon atoms.
  • Ampholytic surfactants include derivatives of aliphatic or aliphatic derivatives of heterocyclic secondary and tertiary amines in which the aliphatic moiety can be either straight or branched chain and wherein one of the aliphatic substituents contains from 8 to 18 carbon atoms and at least one aliphatic substituent contains an anionic water-solubilizing group.
  • Zwitterionic surfactants include derivatives of aliphatic quaternary ammonium phosphonium, and sulfonium compounds in which one of the aliphatic substituents contains from 8 to 18 carbon atoms.
  • the high active surfactant paste formulation must be solid at about room temperature unless the granules are kept cool until mixed with other detergent solids.
  • LAS and AS as used herein mean, respectively, “sodium lauryl benzene sulfonate” and “alkyl sulfate.”
  • C45 mean C14 and C15 alkyl, unless otherwise specified.
  • the surfactant granules of the present invention can be made with some detergency builder and/or inorganic, water-soluble salts. So, the surfactant paste can contain such materials at a ratio of salt/builder to surfactant active of from 0:1 to 1:1 on a dry weight basis. Any compatible detergency builder or combination of builders or water-soluble salts can be used in the process to produce desired end products or intermediates. However, in most cases the inclusion of such solid material is unnecessary and not desired.
  • the present invention is aimed at making a purer, denser surfactant granule.
  • the granular detergents of the present invention can contain neutral or alkaline salts which have a pH in solution of seven or greater, and can be either organic or inorganic in nature.
  • the builder salt assists in providing the desired density and bulk to the detergent granules herein. While some of the salts are inert, many of them also function as detergency builder materials in the laundering solution.
  • neutral water-soluble salts include the alkali metal, ammonium or substituted ammonium chorides, fluorides and sulfates.
  • the alkali metal, and especially sodium, salts of the above are preferred.
  • Sodium sulfate is typically used in detergent granules and is a particularly preferred salt.
  • water-soluble salts include the compounds commonly known as detergent builder materials.
  • Builders are generally selected from the various water-soluble, alkali metal, ammonium or substituted ammonium phosphates, polyphosphates, phosphonates, polyphosphonates, carbonates, silicates, borates, and polyhydroxysulfonates.
  • alkali metal especially sodium, salts of the above.
  • inorganic phosphate builders are sodium and potassium tripolyphosphate, pyrophosphate, polymeric metaphosphate having a degree of polymerization of from 6 to 21, and orthophosphate.
  • polyphosphonate builders are the sodium and potassium salts of ethylene diphosphonic acid, the sodium and potassium salts of ethane 1-hydroxy-1,1-diphosphonic acid and the sodium and potassium salts of ethane, 1,1,2-triphosphonic acid.
  • Other phosphorus builder compounds are disclosed in U.S. Pat. Nos. 3,159,581; 3,213,030; 3,422,021; 3,422,137; 3,400,176 and 3,400,148.
  • nonphosphorus, inorganic builders are sodium and potassium carbonate, bicarbonate, sesquicarbonate, tetraborate decahydrate, and silicate having a molar ratio of SiO2 to alkali metal oxide of from 0.5 to 4.0, preferably from 1.0 to 2.4.
  • the compositions made by the process of the present invention does not require excess carbonate for processing, and preferably does not contain over 2% finely divided calcium carbonate as disclosed In U.S. Pat. No. 4,196,093, Clarke et al., issued Apr. 1, 1980, and is preferably free of the latter.
  • compositions of the present invention can be included in the compositions of the present invention to produce desired end product laundry products, but are not necessary, and are included here to show the breadth of this invention.
  • ingredients commonly used in detergent compositions can be included in the compositions of the present invention to produce desired end product laundry products, but are not necessary, and are included here to show the breadth of this invention.
  • These include flow aids, color speckles, bleaching agents and bleach activators, suds boosters or suds suppressors, antitarnish and anticorrosion agents, soil suspending agents, soil release agents, dyes, fillers, optical brighteners, germicides, pH adjusting agents, nonbuilder alkalinity sources, hydrotropes, enzymes, enzyme-stabilizing agents, chelating agents and perfumes.
  • LAS and AS as used herein mean, respectively, “sodium lauryl benzene sulfonate” and “alkyl sulfate.”
  • C45 mean C14 and C15 alkyl, unless otherwise specified.
  • a Cuisinart® food processor, Model #DCX-Plus with 19.7 cm metal blades operating at 1800 rpm is used for all examples.
  • the tip speed is 18.55 m/sec.
  • the viscosities of LAS and AS are measured using Brookfield HAT Serial No. 74002 as follows: For 60% and 70%, at 0.5 rpm with spindle T-A at 50°C; For 74% AS, at 0.5 rpm with spindle T-E at 50°C; For 50% AS, at 2.5 rpm with spindle T-A at 50°C.
  • the granulation temperature for each high active surfactant paste is determined on a case by case basis.
  • the viscosity of the paste is 800,000 cps (see note below on viscosity measurement technique).
  • the paste temperature was first 25°C. The paste temperature drops from 25°C to -50°C and surfactant granules are formed.
  • Example 2 is similar to Example 1, except that a 60% active (vs. 70%) C13LAS is used.
  • the paste viscosity is 350,000 cps.
  • the temperature at granulation is -20°C.
  • Example 3 is similar to Example 1, except that 10% sodium sulfate is added to the 70% active C13LAS.
  • the builder salt to surfactant active ratio is 0.16.
  • the temperature at granulation is -35°C.
  • Example 4 is similar to Example 3, except 93% active C13LAS is used and 35% sodium carbonate monohydrate is added to the surfactant paste.
  • the paste viscosity is >1,000,000 cps.
  • the builder salt to surfactant active ratio is 0.54.
  • the temperature at granulation is 4°C.
  • Example 5 is similar to Example 1, except a 1:1 blend of C13LAS and C45AS is used. Both pastes have an activity level of 70%. The viscosity of the C45LAS is >7,000,000 cps. The temperature at granulation is -5°C.
  • Example 6 is similar to Example 1, except 74% active C45AS (vs. 70% active C13LAS) is used.
  • the viscosity of the paste is >7,000,000 cps.
  • the temperature at granulation is 23°C.
  • the yield of these granules in the 200-2,000 micron particle size range is 42%.
  • the granules are set under ambient conditions and placed back in the mixer and mixed for about 15 seconds.
  • the final yield is 85%; moisture is 14%.
  • Example 7 is similar to Example 6, except 50% active (vs. 74%) C45AS is used.
  • the viscosity of the paste is 25,000 cps.
  • the temperature at granulation is -5°C.
  • Example 8 is similar to Example 6, except 7.7% mineral oil is added as a processing aid.
  • the temperature at granulation is -2°C.
  • Example 9 is similar to Example 1, except 87% active Barlox 12 (C12 ⁇ 16 dimethyl amine oxide) is used instead of 70% C13LAS.
  • the viscosity of the paste is 1,000,000 cps.
  • the temperature at granulation is -60°C.
  • Example 10 is similar to Example 9, except 37% sodium carbonate monohydrate is added to the 87% active Barlox 12.
  • the builder salt to surfactant active ratio is 0.65.
  • the temperature at granulation is -40°C.
  • Example 11 is similar to Example 1, except 70% Amphoterge K is used instead of 70% C13LAS.
  • the viscosity of the paste is about 500,000 cps.
  • the temperature at granulation is -52°C.

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Claims (9)

  1. Verfahren zur Herstellung kondensierter Tensidgranulate, umfassend:
    A. Mischen einer Tensidpaste mit einer Waschwirkungsaktivität von mindestens 50 %;
    B. Kühlen der Paste auf eine Granulierungstemperatur von -65°C bis 25°C;
    C. Granulieren der gekühlten Paste zu diskreten Tensidgranulaten unter Anwendung eines Feindispersionsmischens mit einer Spitzengeschwindigkeit von 5-50 m/s; und
    wobei das Tensid aus der anionische, zwitterionische, ampholytische, nichtionische und kationische Tenside und Mischungen davon umfassenden Gruppe gewählt wird; und
    wobei das Mischen und Granulieren bei einer Mischerverweilzeit von 0.1 bis 10 Minuten durchgeführt werden.
  2. Verfahren nach Anspruch 1, wobei die Tensidpaste eine Waschwirkungsaktivität bis zu 98 % aufweist; und wobei die Paste eine Viskosität von 10 000 bis 10 000 000 cps bei 50°C besitzt; und wobei die Tensidpaste aus Schritt A eine Temperatur von 5°C bis 70°C besitzt.
  3. Verfahren nach Anspruch 2, wobei die kondensierten Granulate eine Tensid-Waschwirkungsaktivität von mindestens 50 % aufweisen.
  4. Verfahren nach Anspruch 1, wobei die Granulierungstemperatur der Paste -40°C bis 10°C beträgt.
  5. Verfahren nach Anspruch 1, wobei die Spitzengeschwindigkeit 10-40 m/s und die Verweilzeit 0.5-8 Minuten betragen.
  6. Verfahren nach Anspruch 1, wobei die Paste eine Waschwirkungsaktivität von 60-80 % aufweist; und wobei die Paste eine Viskosität von 70 000 bis 7 000 000 cps besitzt; wobei die Paste bei einer anfänglichen Temperatur von 20-30°C eingesetzt wird und wobei die Granulierungstemperatur -30°C bis 0°C beträgt, und wobei die aus der Paste gebildeten, diskreten Tensidgranulate eine durchschnittliche Teilchengröße von 200 Mikron bis 2000 Mikron aufweisen und wobei die diskreten Tensidgranulate eine Schüttdichte von 0,4 bis 1,1 g/cm³ besitzen.
  7. Verfahren nach Anspruch 1, wobei die Waschwirkungsaktivität der Paste 65-75% beträgt; und wobei die Dichte der Granulate 0,5 bis 0,7 g/cm³ beträgt.
  8. Verfahren nach Anspruch 1, wobei die Tensidpaste ein aus anorganischen Salzen oder Buildern oder Mischungen davon gewähltes Material mit einem Verhältnis von Salz/Builder zu Pasten-Wirkstoff von 0:1 bis 1:1 enthält.
  9. Verfahren nach Anspruch 1, wobei die Feuchtigkeit der diskreten Granulate durch Trocknen in einem Wirbelbettrockner auf einen Feuchtigkeitsgehalt von 1-8 % verringert wird.
EP89306335A 1988-06-29 1989-06-23 Verfahren zur Herstellung konzentrierter Granulatkörner von oberflächenaktiven Mitteln Expired - Lifetime EP0349200B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/213,575 US4925585A (en) 1988-06-29 1988-06-29 Detergent granules from cold dough using fine dispersion granulation
US213575 1988-06-29
US288759 1988-12-22
US07/288,759 US5080848A (en) 1988-12-22 1988-12-22 Process for making concentrated surfactant granules

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EP0349200A2 EP0349200A2 (de) 1990-01-03
EP0349200A3 EP0349200A3 (en) 1990-06-20
EP0349200B1 true EP0349200B1 (de) 1995-09-27

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EP (1) EP0349200B1 (de)
JP (1) JP2845953B2 (de)
AR (1) AR245773A1 (de)
AU (1) AU624155B2 (de)
BR (1) BR8903195A (de)
CA (1) CA1322705C (de)
DE (1) DE68924373T2 (de)
DK (1) DK323989A (de)
ES (1) ES2076963T3 (de)
IE (1) IE892100L (de)
MX (1) MX165307B (de)
NZ (1) NZ229756A (de)
TR (1) TR24383A (de)

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US4925585A (en) * 1988-06-29 1990-05-15 The Procter & Gamble Company Detergent granules from cold dough using fine dispersion granulation
US5045238A (en) * 1989-06-09 1991-09-03 The Procter & Gamble Company High active detergent particles which are dispersible in cold water
CA2017921C (en) * 1989-06-09 1995-05-16 John Michael Jolicoeur Formation of detergent granules by deagglomeration of detergent dough
KR0170424B1 (ko) * 1990-07-05 1999-01-15 호르스트 헤를레,요한 글라슬 세제 및 청정제용 표면 활성제 과립의 제조방법
US5494599A (en) * 1991-04-12 1996-02-27 The Procter & Gamble Company Agglomeration of high active pastes to form surfactant granules useful in detergent compositions
EP0560001B1 (de) * 1992-03-10 1999-05-19 The Procter & Gamble Company Hochaktive Tensidpasten
US5486303A (en) * 1993-08-27 1996-01-23 The Procter & Gamble Company Process for making high density detergent agglomerates using an anhydrous powder additive
US5723433A (en) * 1993-09-24 1998-03-03 The Chemithon Corporation Sovent removal process
US6058623A (en) * 1993-09-24 2000-05-09 The Chemithon Corporation Apparatus and process for removing volatile components from a composition
HU219203B (en) * 1993-11-24 2001-03-28 Unilever Nv Particulate detergent composition and process for producing thereof
FR2721616A1 (fr) 1994-06-22 1995-12-29 Hoechst France Compositions de tensioactifs anioniques en poudre, en perles ou en granulés, leur procédé de préparation et leur utilisation dans les produits de nettoyage et d'entretien.

Citations (2)

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EP0220024A2 (de) * 1985-10-09 1987-04-29 The Procter & Gamble Company Granulierte Reinigungsmittel mit Löslichkeit
EP0349201A2 (de) * 1988-06-29 1990-01-03 The Procter & Gamble Company Reinigungsmittelgranulat aus einer kalten Paste durch Feindispersionsgranulierung

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US4115308A (en) * 1976-12-27 1978-09-19 The Procter & Gamble Company High-shear process for preparing silicate-containing paste-form detergent compositions
IN160448B (de) * 1982-12-07 1987-07-11 Albright & Wilson
JPS6072998A (ja) * 1983-09-30 1985-04-25 花王株式会社 粉末物性に優れた界面活性剤粉体組成物の製造法
GB8505062D0 (en) * 1985-02-27 1985-03-27 Unilever Plc Processing granulated solids

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0220024A2 (de) * 1985-10-09 1987-04-29 The Procter & Gamble Company Granulierte Reinigungsmittel mit Löslichkeit
EP0349201A2 (de) * 1988-06-29 1990-01-03 The Procter & Gamble Company Reinigungsmittelgranulat aus einer kalten Paste durch Feindispersionsgranulierung

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TR24383A (tr) 1991-09-23
JP2845953B2 (ja) 1999-01-13
NZ229756A (en) 1992-04-28
AU3713589A (en) 1990-01-04
MX165307B (es) 1992-11-04
BR8903195A (pt) 1990-02-13
DK323989A (da) 1989-12-30
IE892100L (en) 1989-12-29
DE68924373T2 (de) 1996-05-15
EP0349200A3 (en) 1990-06-20
EP0349200A2 (de) 1990-01-03
DE68924373D1 (de) 1995-11-02
AR245773A1 (es) 1994-02-28
JPH0481500A (ja) 1992-03-16
DK323989D0 (da) 1989-06-29
CA1322705C (en) 1993-10-05
AU624155B2 (en) 1992-06-04
ES2076963T3 (es) 1995-11-16

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