EP0848750B1 - Verfahren zur herstellung granularer vorprodukte niederalkalischer reinigungsmittel - Google Patents
Verfahren zur herstellung granularer vorprodukte niederalkalischer reinigungsmittel Download PDFInfo
- Publication number
- EP0848750B1 EP0848750B1 EP96930091A EP96930091A EP0848750B1 EP 0848750 B1 EP0848750 B1 EP 0848750B1 EP 96930091 A EP96930091 A EP 96930091A EP 96930091 A EP96930091 A EP 96930091A EP 0848750 B1 EP0848750 B1 EP 0848750B1
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- European Patent Office
- Prior art keywords
- weight
- salts
- carbonate
- alkali metal
- acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- C11D3/02—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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
- C11D1/8255—Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
-
- 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
- C11D17/0047—Detergents in the form of bars or tablets
- C11D17/0065—Solid detergents containing builders
- C11D17/0073—Tablets
- C11D17/0091—Dishwashing tablets
-
- 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
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/662—Carbohydrates or derivatives
-
- 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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
Definitions
- the invention relates to a method for producing granular precursors lower alkaline cleaning agent, which is improved by Grain resistance and lower fine grain fractions and the in usual way to lower alkaline detergents for automatic dishwashing can be assembled.
- German patent application DE 42 32 170 Al the applicant becomes a weakly alkaline agent for the machine Dish washing described in which sodium citrate, Sodium bicarbonate, a bleach, a bleach activator and enzymes are contained in 1% by weight aqueous solution has a pH of about 8 to 10.
- aqueous solution has a pH of about 8 to 10.
- the means mentioned there are granular. However, detailed information on the manufacture is not included.
- the European application EP 414 197 (Beckiser) describes a machine dishwashing detergent claims which at least 25 wt .-% of a combination contains sodium carbonate and sodium hydrogen carbonate, is free of metasilicates, free of chlorine bleach and in 1 percent by weight aqueous solution has a mildly alkaline pH of less than 10.5 having.
- a further component can be a Acrylic acid-maleic acid copolymer may be present as the sodium salt.
- the preparation of the agents can only be seen as dry powders or granules can be formulated in a conventional manner.
- EP 530 635 (Benckiser) it is known a liquid or powdered, phosphate-free automatic dishwasher detergent, containing a builder system to manufacture, in which in 1 weight percent aqueous solution a pH of 5 to 9 is reached and that contains a builder system from the salt of a hydroxycarboxylic acid, or the mixture of a hydroxycarboxylic acid and the salt of a hydroxycarboxylic acid or the mixture of a hydroxycarboxylic acid and the salt a hydroxy carboxylic acid and a polymer.
- This patent application too does not contain any specific information on the manufacture of the products.
- German patent application DE-A-42 28 786 describes a dishwashing detergent with a selected builder system that should be solid, low alkaline, phosphate and chlorine free and next to one organic water-soluble builder, alkali carbonate, bleach Contains oxygen base, surfactants and other common ingredients, wherein the builder component oxidation products of polyglucosans and / or their contains soluble salts.
- a mixed granulation process is used for production discloses, in which the builder component in admixture with at least another component mixed and granulated in the presence of a liquid becomes.
- Granulation processes are generally used in the manufacture of these products applied. It has been shown here that in technical The frame is difficult, stable, uniform granules with a low proportion of fines to obtain. This applies in particular to products based on Alkali metal salts of carbonic acid and of alkali metal salts of polycarboxylic acids. The reason for this is that the alkali metal salts mentioned, especially the sodium salts such as soda, sodium bicarbonate and sodium citrate, to name the most important raw materials in this class, comparatively are coarsely crystalline substances that are involved in a granulation process heavily baked to a firm grain. Especially citrate is difficult or not with the other ingredients soda and bicarbonate granulable.
- the granules break down, which causes individual components to separate as fine grains, collect on the bottom of the pack and thus along with problems of recipe constancy through segregation processes, even one that is not desired by the consumer Deliver the appearance of the product.
- the invention seeks to remedy this; it goes from two Realizations. Firstly, it was observed that in situ production the alkali metal salts of polycarboxylic acids from alkali carbonates Granules low in fine substances stable under mixing and granulating conditions can be obtained. Furthermore, the knowledge was gained that alkali carbonates, especially sodium carbonate in the presence of Large-scale water in a favorable manner in hydrogen carbonates and salts can be transferred from polycarboxylic acids when the alkali carbonates a proportion of the alkali metal salts of the polycarboxylic acids right at the start of the reaction admixed.
- the invention thus relates to a process for producing granular Pre-products of low alkaline detergents for mechanical Dishwashing, consisting of alkali metal salts of carbonic acid and organic Polycarboxylic acids, characterized in that a subset the salts of the polycarboxylic acids in the usual way, then in Presence of 2 to 12 wt .-% water, alkali carbonate in the presence of the alkali metal salts of the polycarboxylic acids with the free polycarboxylic acid their salts and essentially alkali hydrogen carbonate at temperatures implemented below 60 ° C.
- the invention furthermore relates to a granular precursor of a automatic dishwashing detergent, containing 20 to 70% by weight of trisodium citrate dihydrate, 20 to 60% by weight sodium bicarbonate, 0 to 10% by weight Sodium carbonate and 0 to 4% by weight nonionic surfactants in intimate admixture, produced by the method according to the invention.
- alkali metal salts of Carbonic acid and polycarboxylic acids are preferred carbon dioxide such as sodium carbonate (soda, anhydrous or in hydrated form) and sodium bicarbonate use. Even with the Salts of the polycarboxylic acids are preferred the sodium salts.
- a special one preferred polycarboxylic acid is citric acid, a particularly preferred one Salt is trisodium citrate, especially trisodium citrate dihydrate.
- polycarboxylic acids can also be used Example malic acid, tartaric acid, nitrogen-containing polycarboxylic acids, such as Ethylenediaminetetraacetic acid, nitrilotriacetic acid, diethylenetriaminepentaacetic acid or triethylenetetraamine hexaacetic acid, methylglycinediacetic acid and the same.
- DE-A-42 28 can also be used 786 called oxidation products of polyglucosans.
- Copolymers of polymerizable acids if desired with esters and sulfonic acids copolymerized to use. So especially copolymers Based on acrylic acid-maleic anhydride, acrylic acid-maleic anhydride-vinyl acetate (saponified to vinyl alcohol), methacrylic acid-maleic anhydride and the same.
- the inventive method is carried out so that in a first Stage prepared the alkali metal salt of a polycarboxylic acid in a conventional manner becomes. This can be done by reacting the polycarboxylic acid, for example done with alkali lye, alkali bicarbonate or alkali carbonate. In A second stage is then in the presence of this amount of polycarboxylic acid salt the alkali carbonate, for example sodium carbonate, with the polycarboxylic acid, for example citric acid, to alkali hydrogen carbonate and implemented the salt of the polycarboxylic acid.
- This implementation takes place in the present of small amounts of water, namely 2 to 12% by weight, preferably 3 to 8 wt .-% water instead.
- the salt of the polycarboxylic acid be placed in a mixer, granulator or the like and then in the presence of the amount of water, the other ingredients be added continuously or in portions.
- the gentle driving style preferred, this is especially true if the reaction is of simplicity half not in a separate reactor, but rather as a solid reaction in a disperse phase with a high solids content in a mixer is carried out with simultaneous granulation.
- the job of the mixer is to mix the reaction intimately Allow residues to run off completely and build up a granular grain possibly by adding other granulation aids such as Surfactants, polycarboxylate solutions. Mixers were therefore used for Granulations are suitable and in which residence times of 1 to 10 have min set.
- Suitable mixers are e.g. B. Eirich (R) mixers of the R or RV series, manufactured by machine factory Gustav Eirich, Hardheim, Germany, the Fukae (R) FS-G mixers, manufactured by Fukal Powtech Kogyo Co., Japan the Lödige (R) FM, KM and CB mixer, manufactured by Lödige Maschinenbau GmbH, Paderborn, Germany or the Drais (R) series T or KT, manufactured by Drais Maschinene GmbH, Mannheim, Germany.
- R B. Eirich (R) mixers of the R or RV series, manufactured by machine factory Gustav Eirich, Hardheim, Germany
- the Fukae (R) FS-G mixers manufactured by Fukal Powtech Kogyo Co.
- Japan the Lödige (R) FM, KM and CB mixer manufactured by Lödige Maschinenbau GmbH, Paderborn, Germany or the Drais (R) series T or KT, manufactured by Drais Maschinene GmbH, Mannheim, Germany.
- Alkaline carbonate soda used and sodium tricitrate-2-hydrate as the polycarboxylic acid salt as Alkaline carbonate soda used and sodium tricitrate-2-hydrate as the polycarboxylic acid salt.
- the acid is then worked with citric acid and it sodium bicarbonate is mixed intimately with sodium tricitrate dihydrate and, if desired, small amounts of soda.
- the weight amount of polycarboxylic acid sodium salts used in the reaction quasi presented as a buffer can be freely determined by the expert, based on the amount of soda, it is 10 to 500% by weight, preferably 50 up to 150 wt .-%, based on alkali carbonate.
- the process according to the invention is controlled so that the residual content of Alkali carbonate less than 20% by weight, preferably less than 10% by weight and in particular less than 5% by weight.
- Low alkali carbonate levels with a simultaneously high amount of hydrogen carbonate can be achieved by 50 to 150% by weight, based on alkali carbonate, of polycarboxylic acid salts, specifies and works in mild temperature conditions. Higher Content of alkali carbonate, with less hydrogen carbonate, reached one, either by working at higher temperatures or with smaller amounts of the salts of the polycarboxylic acids starts.
- the person skilled in the art within the scope of the invention Process in a post-drying step from alkali hydrogen carbonate To produce alkali carbonate. This happens especially when the Temperature at or above the decomposition point of the sodium hydrogen carbonate is increased.
- the amount of alkali carbonate Loads of the amount of alkali hydrogen carbonate can be increased, for example at temperatures from 50 to 150 ° C, especially 100 ° C to 150 ° C.
- Surfactants can also be used as further constituents in the process according to the invention.
- the total content of surfactants in the compositions is generally between 0.5% by weight and 8% by weight and can preferably be 0.8 to 5% by weight.
- Usual surfactants for cleaning agents belong to the groups of anionic, nonionic and / or zwitterionic surfactants, the use of anionic and / or nonionic surfactants being preferred.
- Particularly suitable anionic surfactants are sulfonates and sulfates and soaps made from preferably natural fatty acids or fatty acid mixtures.
- surfactants of the sulfonate type used are C 9-13- alkylbenzosulfonates, olefin sulfonates, esters and alpha-sulfofatty acids or alpha-sulfofatty acid disalts.
- Suitable surfactants of the sulfate type are the sulfuric acid monoesters from primary alcohols of natural or synthetic origin, ie from C 12-18 fatty alcohols or from C 10-20 oxo alcohols, and those of secondary alcohols of this chain length.
- the sulfuric acid monoesters of the alcohols reacted with 1 to 6 mol of ethylene oxide (EO) are also suitable.
- Addition products of preferably 2 to 20 moles of EO to 1 mole of an aliphatic compound with essentially 10 to 20 carbon atoms from the group of alcohols, carboxylic acids, fatty amines, carboxamides and alkanesulfonamides are of particular interest as nonionic surfactants.
- nonionic surfactants polyglycol ethers with 2 to 7 ethylene glycol ether residues in the molecule, which are not or not completely water-soluble, are also important, especially when they are used together with water-soluble nonionic or anionic surfactants.
- nonionic surfactants made from alkyl polyglycosides of the general formula RO- (G) x can be used, in which R denotes a primary, straight-chain or branched aliphatic radical having 8 to 22, preferably 12 to 18, carbon atoms, G for a glycose unit is with 5 or 6 carbon atoms and the degree of oligomerization x is between 1 and 10.
- the dishwashing detergents contain the invention not more than 10 wt .-% water-soluble organic complexing agents or co-builders from the group of synthetic polymeric polycarboxylates, among which the salts of polymerization products unsaturated Carboxylic acids are understood and include, for example, polyacrylates, Polymethacrylates, polymaleinates or copolymers of acrylic acid with maleic acid or maleic anhydride. Such substances are completely absent in the agents according to the invention.
- the solid dishwashing detergents produced by the process according to the invention can also contain up to 10% by weight of further alkalizing agents.
- alkali silicates include in particular the alkali silicates.
- Preferred alkali silicates are the sodium silicates, in particular the amorphous sodium silicates with a molar ratio Na 2 O: SiO 2 of 1: 1.5 to 1: 2.5.
- Such amorphous alkali silicates are commercially available, for example, under the trade name Portil (R).
- Portil (R) Compounds made from alkali silicates and soda, as are commercially available, can also be used.
- the process products of the process according to the invention are in particular as granular intermediate products for the production of cleaning agents for. the machine dishwashing. As a rule, they do not contain any oxidizing agents and also not in machine dishwashing detergents, some sensitive small quantities. To get out of the products machine dishwashing detergent, you can use these remaining Ingredients are mixed or granulated into the end products. These remaining ingredients primarily include bleach and Bleach activators.
- bleaching agents which can be used are, for example, peroxycarbonate (Na 2 CO 3 .1.5 H 2 O 2 ) or persic acid salts of organic acids, such as perbenzoates or salts of diperdodecanedioic acid.
- Suitable bleach activators for these oxidizing agents are, in particular, the N-acyl or O-acyl compounds which form with H 2 O 2 organic peracids, preferably N, N'-tetraacylated diamines such as N, N, N ', N'-tetraacetylethylene diamine.
- the salary of the then ready-made dishwasher detergent on oxidizing agent Oxygen base is preferably about 5 wt% to 15 wt%, especially in combination with 1% by weight to 10% by weight, in particular 2% by weight up to 5% by weight of a bleach activator.
- the precursors according to the invention can also be used and bleach activators still others, usually only in each case small amounts of active ingredients are given. These substances will preferably in amounts of 5 to 10 wt .-%, based on the final manufactured Detergent.
- These small components include for example foam inhibitors and enzymes of the protease type, Amylases, lipases and / or cellulases and not bound as water of crystallization or in a similar solid form associated with the components Water.
- the enzymes can be adsorbed onto carriers in the usual way and / or be embedded in coating substances and are preferably in Quantities of not more than 5% by weight in total, in particular 2 to 4% by weight used.
- Suitable non-surfactant-like and preferably used Foam inhibitors are organopolysiloxanes and their mixtures with microfine, optionally silanized silica. It is also possible foam-inhibiting use of long-chain soaps. Can also be suitable Mixtures of different foam inhibitors, for example those made from Silicones and paraffins or waxes. These foam inhibitors are preferred to a granular, water-soluble or dispersible carrier substance bound.
- inorganic transition metal salts e.g. B. manganese salts such as manganese sulfate, potassium hexafluorotianate and the like, inorganic transition metal complexes, nitrogen-containing heterocycles such as benzotriazole or isocyanuric acid, natural amino acids such as cystine, histidine, methionine, reversible organic redox systems such as quinone / hydroquinone and / or reversible inorganic redox systems such as Fe 2+ / Fe 3+ .
- inorganic transition metal salts e.g. B.
- manganese salts such as manganese sulfate, potassium hexafluorotianate and the like
- inorganic transition metal complexes nitrogen-containing heterocycles such as benzotriazole or isocyanuric acid
- natural amino acids such as cystine, histidine, methionine
- reversible organic redox systems such as quinone / hydroquinon
- the preliminary products produced by the process according to the invention can further be processed into tablets.
- the preliminary products with the other constituents mentioned are mixed with one another in a mixer and as a mixture using conventional tablet presses, for example eccentric presses or rotary presses, with pressures in the range of 200. 10 5 Pa to 1 500. 10 5 Pa pressed.
- a tablet produced in this way has a weight of 15 g to 40 g, in particular 20 g to 30 g, with a diameter of 35 mm up to 40 mm.
- the granular detergent precursors produced by the process according to the invention are stable granules, they show a low proportion of fines and can be used in particular with the other components mentioned build up in a favorable way. To homogeneous, non-segregating Granulate detergents further.
- a particular advantage of the process according to the invention is that only very small amounts of carbon dioxide are produced in the neutralization and granulation step. It is shown, for example, by the surprisingly high bulk densities (bulk weights over 900 g / l can be produced), which in turn shows that the process products are not inflated by CO 2 .
- Example No. 1 2nd 3rd kg kg kg C 8 / C 10 alkyl polyglycoside, DP approx. 1.4 35% aqueous solution 0.17 0.17 0.17 C 12 C 14 fatty alcohol, 4 E0 0.08 0.08 0.08 C 12 C 14 fatty alcohol, 10 E0 butyl ether 0.03 0.03 0.03 Trisodium citrate 2 H20 (TNC) 2.48 2.48 2.48 Soda calc.
- Example No. 3 differs from Example 1 only in that bicarbonate was initially introduced. According to the two possible parallel reactions, a favored formation of CO 2 is to be expected: 1.5 Na 2 CO 3 + ZS-H 3 -ZS-Na 3 +1.5 NaHCO 3 3 NaHCO 3 + ZS-H 3 -ZS-Na 3 + 3H 2 O + 3CO 2
- the granules thus obtained were dried in a fluidized bed dryer.
- the percentages are based on the batch quantity and surprisingly despite those present in the neutralization step in Example 3 high amounts of bicarbonate low.
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- Oil, Petroleum & Natural Gas (AREA)
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Beispiel Nr. | 1 | 2 | 3 |
kg | kg | kg | |
C8/C10 Alkylpolyglycosid, DP ca. 1,4 35 %ige wässerige Lösung | 0,17 | 0,17 | 0,17 |
C12 C14 Fettalkohol, 4 E0 | 0,08 | 0,08 | 0,08 |
C12 C14 Fettalkohol, 10 E0 Buthylether | 0,03 | 0,03 | 0,03 |
Trinatriumcitrat 2 H20 (TNC) | 2,48 | 2,48 | 2,48 |
Soda calc. | 2,23 | 2,96 | 2,23 |
Natriumhydrogencarbonat | 3,11 | 2,37 | 3,11 |
Zitronensäure 1 H2O (Z5-H3) | 1,87 | 1,87 | 1,87 |
Beispiel Nr. | 1 | 2 | 3 |
CO2 (kg) | 0,44 | 0,36 | 0,43 |
CO2 (%) | 4,4 | 3,6 | 4,3 |
Claims (13)
- Verfahren zur Herstellung granularer Vorprodukte niederalkalischer Reinigungsmittel für das maschinelle Geschirrspülen, bestehend aus Alkalimetallsalzen der Kohlensäure und organischer Polycarbonsäuren, dadurch gekennzeichnet, daß man eine Teilmenge der Salze der Polycarbonsäuren in üblicher Weise herstellt, so dann in Gegenwart von 2 bis 12 Gew.-% Wasser, Alkalicarbonat in Gegenwart der Alkalimetallsalze der Polycarbonsäuren mit der freien Polycarbonsäure zu deren Salzen und im wesentlichen Alkalihydrogencarbonat bei Temperaturen unterhalb von 60 °C umsetzt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Reaktion unter gleichzeitigem Granulieren der Bestandteile durchgeführt wird.
- Verfahren nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß die Reaktion in einem zur Granulation geeigneten Mischer durchführt und Verweilzeiten von 1 bis 10 min einstellt.
- Verfahren nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die Menge der vorgelegten Salze der Polycarbonsäuren 10 bis 500 Gew.-% vorzugsweise 50 bis 150 Gew.-% der Alkalicarbonatmenge beträgt.
- Verfahren nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß als Polycarbonsäure bzw. deren Natriumsalzen, insbesondere Trinatriumcitrat, eingesetzt wird und daß als Alkalicarbonat Soda eingesetzt wird.
- Verfahren nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Sodamenge bis auf einen Restgehalt von 20 Gew.-% (bezogen auf Gesamtansatz) vorzugsweise 10 Gew.-% und insbesondere 5 Gew.-% zu dem Polycarbonsäuresalz und Natriumhydrogencarbonat umgesetzt wird.
- Verfahren nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß Natriumhydrogencarbonat anschließend, zumindest anteilweise, durch Erwärmen in Natriumcarbonat umgewandelt wird.
- Verfahren nach Anspruch 7, dadurch gekennzeichnet, daß die Wärmebehandlung in einem Wirbelschichtrockner durchgeführt wird.
- Verfahren nach den Ansprüchen 1 bis 8, dadurch gekennzeichnet, daß als weitere Bestandteile Tenside, insbesondere Niotenside, wie Alkylpolyglykoside und/oder Alkoxylierungsprodukte langkettiger Alkohole mit 2 bis 10 Mol Ethylenoxid pro Mol Alkohol eingesetzt werden.
- Verfahren nach den Ansprüchen 1 bis 9, dadurch gekennzeichnet, daß die Stoffmischungen in an sich bekannter Weise durch Zugabe von Peroxyverbindungen und anderen, in maschinellen Geschirrspülmitteln üblichen Komponenten, wie Silberschutzmittel, Farbstoffe, Duftstoffe und dergleichen endkonfektioniert werden.
- Verfahren nach den Ansprüchen 1 bis 9, dadurch gekennzeichnet, daß man die Stoffgemische in an sich bekannter Weise mit weiteren, in maschinellen Geschirrspülmitteln üblichen Bestandteilen zu Stücken, insbesondere Tabletten, verpreßt.
- Verfahren nach den Ansprüchen 1 bis 11, dadurch gekennzeichnet, daß man das Verhältnis von Soda, Natriumhydrogencarbonat und in Salzen von Polycarbonsäuren so wählt, daß die Mittel in Iprozentiger Lösung einen pH-Wert von 7 bis 11, vorzugsweise von 8 bis 10, aufweisen.
- Granulare Vorprodukte eines maschinellen Geschirrspülmittels, enthaltend 20 bis 70 Gew.-% Trinatriumcitratdihydrat, 20 bis 60 Gew.-% Natriumhydrogencarbonat, bis 10 Gew.-% Natriumcarbonat sowie 0 bis 4 Gew.-% nichtionische Tenside in inniger Abmischung, hergestellt nach den Ansprüchen 1 bis 12.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19532304 | 1995-09-01 | ||
DE19532304A DE19532304A1 (de) | 1995-09-01 | 1995-09-01 | Verfahren zur Herstellung granularer Vorprodukte niederalkalischer Reinigungsmittel |
PCT/EP1996/003730 WO1997009411A1 (de) | 1995-09-01 | 1996-08-23 | Verfahren zur herstellung granularer vorprodukte niederalkalischer reinigungsmittel |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0848750A1 EP0848750A1 (de) | 1998-06-24 |
EP0848750B1 true EP0848750B1 (de) | 1999-11-10 |
Family
ID=7771024
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96930091A Expired - Lifetime EP0848750B1 (de) | 1995-09-01 | 1996-08-23 | Verfahren zur herstellung granularer vorprodukte niederalkalischer reinigungsmittel |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0848750B1 (de) |
DE (2) | DE19532304A1 (de) |
ES (1) | ES2140894T3 (de) |
WO (1) | WO1997009411A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU4861997A (en) * | 1996-10-02 | 1998-04-24 | Herbert Schmitz | Method for producing a detergent, specially a powder detergent for dish washing machines |
US6124253A (en) * | 1997-09-16 | 2000-09-26 | Church & Dwight Co., Inc. | Aqueous composition for low-temperature metal-cleaning and method of use |
DE102008028229A1 (de) * | 2008-06-16 | 2009-12-17 | Fit Gmbh | Zusammensetzung zur Herstellung von Reinigungsmitteln, Tablettiermischung, Polymerkombination, Reinigunsmittel-Formkörper und Verfahren zur deren Herstellung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK166548B1 (da) * | 1991-03-15 | 1993-06-07 | Cleantabs As | Phosphatfrit maskinopvaskemiddel |
US5256327A (en) * | 1991-08-01 | 1993-10-26 | Shaklee Corporation | Method of preparing a sequestering agent for a non-phosphate cleaning composition |
EP0626996A1 (de) * | 1992-02-20 | 1994-12-07 | Henkel Kommanditgesellschaft auf Aktien | Verfahren zur herstellung niederalkalischer, aktivchlor-, silikat-, und phosphatfreier maschinengeschirrspülmittel in form von schwergranulaten |
DE4232170C2 (de) * | 1992-09-25 | 1999-09-16 | Henkel Kgaa | Schwachalkalische Geschirreinigungsmittel |
CA2175331C (en) * | 1993-11-03 | 2000-02-01 | Eugene Steven Sadlowski | Control of calcium carbonate precipitation in automatic dishwashing |
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1995
- 1995-09-01 DE DE19532304A patent/DE19532304A1/de not_active Withdrawn
-
1996
- 1996-08-23 DE DE59603641T patent/DE59603641D1/de not_active Expired - Fee Related
- 1996-08-23 ES ES96930091T patent/ES2140894T3/es not_active Expired - Lifetime
- 1996-08-23 WO PCT/EP1996/003730 patent/WO1997009411A1/de active IP Right Grant
- 1996-08-23 EP EP96930091A patent/EP0848750B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ES2140894T3 (es) | 2000-03-01 |
DE59603641D1 (de) | 1999-12-16 |
EP0848750A1 (de) | 1998-06-24 |
WO1997009411A1 (de) | 1997-03-13 |
DE19532304A1 (de) | 1997-03-06 |
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