EP0871698B1 - Verfahren zur herstellung von bruchstabilen reinigungstabletten - Google Patents
Verfahren zur herstellung von bruchstabilen reinigungstabletten Download PDFInfo
- Publication number
- EP0871698B1 EP0871698B1 EP96901299A EP96901299A EP0871698B1 EP 0871698 B1 EP0871698 B1 EP 0871698B1 EP 96901299 A EP96901299 A EP 96901299A EP 96901299 A EP96901299 A EP 96901299A EP 0871698 B1 EP0871698 B1 EP 0871698B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- weight
- tablets
- alkali metal
- optionally
- water
- 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.)
- Expired - Lifetime
Links
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
- C11D3/06—Phosphates, including polyphosphates
-
- 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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/08—Silicates
Definitions
- the present invention relates to a method for producing break-resistant Detergent tablets, in particular for use in mechanical Dishwashing, both in the commercial and household sectors.
- Powder, granule or tablet detergents for dishes in dishwashers consist essentially of sodium tripolyphosphate, Alkali silicate, usually alkali metasilicate, and possibly from a low-foaming, nonionic surfactant and bleaching agents, namely active chlorine releasing compounds, but preferably those in aqueous solution Release active oxygen. Above all, they serve to facilitate the Removal of stains from tea, coffee or fruit juices.
- the known agents are generally prepared by customary methods Manufacturing processes such as mixing or granulating and / or others Pressing.
- disk-like tablets have been produced from simple mixtures of the known detergent constituents with the addition of a tabletting aid, not specified, and using a compression pressure of about 70 to 1000 kg / cm 2 (7 to 100 MPa).
- Tablets of the type mentioned above are also described in German Offenlegungsschrift 28 57 001. They are also produced by pressing the mere mixtures of the components using appropriate pressures.
- Lubricants, lubricants and disintegrants such as insoluble stearate salts, fatty acids, fatty alcohols, starch, polyethylene glycol, Aerosil (R) , colloidal silica, alginates, Veegum (R) , sugar, gelatin and zeolites are mentioned as tableting aids.
- the present invention therefore relates to a process for the preparation of unbreakable, alkaline detergent tablets suitable for use in dishwashers from pentaalkali metal triphosphate, alkali silicates, which may optionally contain water of crystallization, and, if appropriate, alkali metal carbonates, bleaching agents, foam inhibitors and / or enzymes and nonionic surfactants, which is characterized in that that 15-60, preferably 25-50% by weight of pentaalkali metal phosphate in a proportion of 20-100% by weight, preferably 35-80% by weight, and in particular 40-60% by weight of phase I, 35-80, preferably 40-55% by weight of alkali metal silicate, optionally containing water of crystallization, calculated as Na 2 SiO 3 , and optionally up to 20% by weight of sodium carbonate, up to 18, preferably 1-10% by weight of a bleaching agent, up to 3, preferably 1 to 2% by weight of paraffin oil and / or up to 3% by weight of a low-foaming
- phase 1 tripolyphosphates can be used successfully in tabletting processes in the detergent and cleaning agent sector.
- Detergent tablets are known from US Pat. No. 3,417,024 (1968), which depending on the desired degree of decay tripolyphosphate of phase I or May contain phase II.
- Alkali metasilicate is used in amounts of 35-80, preferably 40-55% by weight, calculated as Na 2 SiO 3 , predominantly in crystalline-free, slightly granulated form with residual water contents of up to 5% by weight, preferably 3 ⁇ 1% by weight. -% used. About 3 - 15, preferably 4 - 12 wt .-%, calculated as an anhydrous compound, can be used in the form of its penta- and / or nonahydrate. The solubility of the tablets can thus be controlled as desired. Sodium metasilicate pentahydrate is preferred because of its higher alkalinity. Metasilicates containing water of crystallization alone would dilute the active substance content of the tablets too much.
- sodium carbonate because of the better decay properties the tablets are preferably in compacted form, as is commercially available is used.
- the amount of the optional addition of cleaning-enhancing nonionic, preferably low-foaming surfactants is up to 3% by weight, preferably 0.5 - 2.5 wt .-%, otherwise when using the tablets in the dishwashers in connection with the soiling of the dishes unwanted foaming can occur by adding a foam inhibitor would require.
- the known low-foaming nonionic surfactants are suitable Ethoxylation products of long chain alcohols and alkylphenols, where To reduce the tendency to foam, the free hydroxyl group of the polyethylene glycol ether residue by ether or acetal groups or by polypropylene glycol ether residues are substituted.
- the free hydroxyl groups with a n-alkyl radicals e.g. methyl, ethyl, propyl, butyl, pentyl
- the block polymers are also suitable of ethylene oxide with polypropylene oxide.
- the biological ones are preferred easily degradable surfactants.
- bleaching agents preferably 1-10, preferably come as bleaching agents %
- bleach activators such as Tetraacetylethylenediamine (TAED) or tetraacetylglycoluril (TAGU) or peracids or their salts, e.g. the magnesium salt of monoperphthalic acid in Consideration.
- TAED Tetraacetylethylenediamine
- TAGU tetraacetylglycoluril
- peracids or their salts e.g. the magnesium salt of monoperphthalic acid in Consideration.
- compounds that release active chlorine such as the salts of chlorine-substituted isocyanuric acids, especially pure trichloroisocyanuric acid themselves, can be used. You may be in Amounts of 0.5 to 3, preferably 1 to 2 wt .-%, based on the pressing mixture, admixed.
- active chlorine bleach Unless active chlorine bleach is added, it can be improved the cleaning performance additional enzymes, preferably commercially available Amylases and / or proteases and / or lipases and / or cutinases in quantities from 0.2 to 5, preferably 0.5 to 3,% by weight are used.
- additional enzymes preferably commercially available Amylases and / or proteases and / or lipases and / or cutinases in quantities from 0.2 to 5, preferably 0.5 to 3,% by weight are used.
- a dust-binding additive of up to 3, preferably 1 to, is expedient 2% by weight paraffin oil, alone or together with nonionic surfactants.
- some of the bleach-free granules can be bleach-stable Dyes or color pigments such as Phthalocyanine, stain and then mix in together with the bleaching agents.
- fragrances, known bactericidal and dirt-suspending agents, foam inhibitors and corrosion inhibitors can be added.
- the cleaning agent components are mixed in known mixing devices such as a Lödige mixer.
- Pressing tools are preferably used for pressing, the stamp surfaces of which are coated with a plastic. Caking on the pressing tools does not occur.
- the tablets obtained disintegrate perfectly even after prolonged storage.
- Essentially all known eccentric and rotary presses are suitable for pressing the mixture, which can be used for the production of tablets with diameters of approximately 1.0 cm and more.
- the compression pressure must be so high that break-stable tablets are formed immediately after manufacture, which are not damaged during tableting, packaging and transport and, despite these high demands on fracture stability, disintegrate quickly during use. This optimum is usually determined by the person skilled in the art by routine testing.
- the density of the tablets is then - for a given mixture - a consequence of the pressure applied.
- a compression pressure of 10 to 80, preferably 20 to 65 MPa has proven to be optimal.
- the tablets obtained by this process have an average density of 1.3-1.9 g / cm 3 and, in addition to high breaking strength, have a uniform porous structure with a large inner surface. They therefore disintegrate particularly quickly when used in the dishwasher.
- Phase I became 7.0% by weight of compact anhydrous sodium carbonate with 1.0% by weight of defoamer (DEA- WAX (R) -DLW 5419), 7.0% by weight sodium perborate monohydrate, 16.0% by weight sodium metasilicate pentahydrate and 1.0% by weight Plurafac (R) LF 403 (linear fatty alcohol alkoxylate from BASF) in a Lödige mixer mixed.
- the liter weight of the mixture was 1000 g.
- the breaking strength of the tablets after preparation was 208 N, after one day> 485 N.
- the dissolution time was 2.3 minutes after 1 day and 3.2 minutes after 7 days.
- the tablets were of a uniform structure and of great stability. To determine their dissolution rate, the tablets were placed in one sieve-shaped basket in 1 liter of tap water of 16 ° d at 50 ° C as long moved up and down until they were dissolved (diving test).
- the tablets When the tablets are used in commercial dishwashers they can come to the tank water by hand or by an automatic Cleaning dosing device can be added. Because the cleaning solution was used directly, especially for this was a quick resolution of the tablets required. The cleaning solution was for several Rinse cycles are used, with constant dilution by fresh water was carried out and accordingly from time to time with new, quickly soluble tablets must be made.
- the dosage was in one Another trial in a commercial dishwasher (box-type machine) carried out via a rinsing meter, in which 2 kg of this easily soluble tablets from the storage container in the form of a sieve were deposited.
- a rinsing meter in which 2 kg of this easily soluble tablets from the storage container in the form of a sieve were deposited.
- the dosage amount was regulated via the conductivity.
- Examples 1 and 2 which represent compositions according to the invention, the clear advantage of these tablets compared to those according to Examples 1a and 2a, which represent comparative experiments in which with pentasodium triphosphate not defined in more detail with about 20% by weight of phase I -Share was worked.
- the solubility of the tablets with a high proportion of Phase I increased as expected, but the unusual improvement in the breaking strength of the tablets, which was already noticeable after one day of storage, was not to be expected.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Glanulating (AREA)
Description
Alkalimetasilikat wird in Mengen von 35 - 80, vorzugsweise 40 - 55 Gew.-%, berechnet als Na2SiO3, überwiegend in kristallwasserfreier, leicht granulierter Form mit Restwassergehalten von höchsten bis zu 5 Gew.-%, vorzugsweise 3 ± 1 Gew.-% eingesetzt. Etwa 3 - 15, vorzugsweise 4 - 12 Gew.-%, als wasserfreie Verbindung berechnet, können in Form seines Penta- und/ oder Nonahydrats eingesetzt werden. Damit kann die Löslichkeit der Tabletten wunschgemäß gesteuert werden. Natriummetasilikat-pentahydrat wird wegen seiner höheren Alkalinität bevorzugt. Kristallwasserhaltige Metasilikate allein würden den Aktivsubstanzgehalt der Tabletten zu stark verdünnen.
Zum Verpressen des Gemisches sind im wesentlichen alle bekannten Excenter- und Rundläuferpressen geeignet, die zur Herstellung von Tabletten mit Durchmessern von etwa 1,0 cm und mehr eingesetzt werden können. Der Preßdruck muß bei vorgegebener Zusammensetzung so hoch sein, daß direkt nach der Herstellung bruchstabile Tabletten entstehen, die bei der Tablettierung, der Verpackung und beim Transport nicht beschädigt werden und trotz dieser hohen Anforderungen an die Bruchstabilität bei der Anwendung schnell zerfallen. Dieses Optimum wird vom Fachmann üblicherweise durch routinemäßiges Ausprobieren ermittelt. Die Dichte der Tabletten ist dann - bei vorgegebener Mischung - eine Folge des angewendeten Preßdrucks. Beim Verpressen der erfindungsgemäßen Tablettenbestandteile hat sich ein Preßdruck von 10 bis 80, vorzugsweise 20 bis 65 MPa als optimal erwiesen.
Beispiel | 1 | 1a | 2 | 2a |
Tripolyphosphat N % | - | 29 | - | 40,1 |
Tripolyphosphat N 40 % | 29 | - | 40,1 | - |
Na2SiO3 % | - | - | 47,4 | 47,4 |
Na2SiO3 + 5 % Restfeuchte % | 39 | 39 | - | - |
Na2SiO3 · 5H2O % | 16 | 16 | - | - |
Na2SiO3 · 9 H2O % | - | - | 10 | 10 |
Soda verdichtet % | 7 | 7 | - | - |
Perboratmonohydrat % | 7 | 7 | - | - |
Trichlorisocyanursäure % | - | - | 1,0 | 1,0 |
DEA-WAX | 1 | 1 | - | - |
Paraffinöl % | - | - | 1,5 | 1,5 |
Plurafac LF 403 | 1 | 1 | - | - |
Tablettengewicht g | 40 | 40 | 35 | 35 |
Tablettendurchmesser mm | 38 | 38 | 38 | 38 |
Tablettendichte g/cm3 | 1,55 | 1,56 | 1,76 | 1,81 |
Preßkraft KN | 40 | 53 | 65 | 80 |
Bruchfestigkeit | ||||
nach Herstellung N | 208 | 214 | 150 | 140 |
nach 1 Tag N | 485 | 250 | 460 | 260 |
Lösezeit Min. (1 Tag nach Herstellung) | 2,3 | >7 | 5 | >7 |
Rest nach 7 Min. % | - | 38 | - | 70 |
Herstellung: | ||||
Exzenterpresse | x | x | - | - |
Rundläuferpresse | - | - | x | x |
Claims (3)
- Verfahren zur Herstellung von bruchstabilen, zur Verwendung in Geschirrspülmaschinen geeigneten alkalischen Reinigungsmitteltabletten aus Pentaalkalitriphosphat, Alkalisilikaten, die gegebenenfalls Kristallwasser enthalten können, sowie gegebenenfalls Alkalicarbonaten, Bleichmitteln, Schauminhibitoren und/oder Enzymen und nichtionischen Tensiden, dadurch gekennzeichnet, daß man 15 - 60, vorzugsweise 25 - 50 Gew.-% Pentaalkalitriphosphat mit einem Anteil von 20 - 100 Gew.-%, vorzugsweise 35 - 80 Gew.-%, und insbesondere 40 - 60 Gew.-% Phase-I, 35 - 80, vorzugsweise 40 - 55 Gew.-% gegebenenfalls kristallwasserhaltiges Alkalimetasilikat, berechnet als Na2 SiO3, und gegebenenfalls bis zu 20 Gew.-% Natriumcarbonat, bis zu 18, vorzugsweise 1 - 10 Gew.-% eines Bleichmittels, bis zu 3, vorzugsweise 1 - 2 Gew.-% Paraffinöl und/oder bis zu 3 Gew.-% eines schwachschäumenden nichtionischen Tensids in an sich bekannter Weise vermischt und das Gemisch unter Anwendung von Preßdrucken von mehr als 7 MPa verpreßt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man beim Vermischen der Bestandteile bei Einsatz von Aktivsauerstoffbleichmitteln zusätzlich die dafür erforderliche Menge an Bleichaktivatoren zugibt.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man etwa 3 - 15, vorzugsweise 4 - 12 Gew.-% des wasserfreien Natriummetasilikatanteils durch sein Penta- und/oder Nonahydrat ersetzt.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19502774A DE19502774A1 (de) | 1995-01-27 | 1995-01-27 | Verfahren zur Herstellung von bruchstabilen Reinigungstabletten |
DE19502774 | 1995-01-27 | ||
PCT/EP1996/000200 WO1996023053A1 (de) | 1995-01-27 | 1996-01-18 | Verfahren zur herstellung von bruchstabilen reinigungstabletten |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0871698A1 EP0871698A1 (de) | 1998-10-21 |
EP0871698B1 true EP0871698B1 (de) | 2000-04-12 |
Family
ID=7752604
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96901299A Expired - Lifetime EP0871698B1 (de) | 1995-01-27 | 1996-01-18 | Verfahren zur herstellung von bruchstabilen reinigungstabletten |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP0871698B1 (de) |
AT (1) | ATE191745T1 (de) |
DE (2) | DE19502774A1 (de) |
ES (1) | ES2146382T3 (de) |
FI (1) | FI973114A0 (de) |
PT (1) | PT871698E (de) |
WO (1) | WO1996023053A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4408718A1 (de) * | 1994-03-15 | 1995-09-21 | Henkel Kgaa | Bruch- und lagerstabile, polyfunktionelle Reinigungstabletten, Verfahren zu ihrer Herstellung und ihre Verwendung |
GB2318800A (en) * | 1996-11-01 | 1998-05-06 | Unilever Plc | Detergent composition |
GB9706083D0 (en) * | 1997-03-24 | 1997-05-14 | Unilever Plc | Detergent compositions |
GB9711829D0 (en) | 1997-06-06 | 1997-08-06 | Unilever Plc | Detergent compositions |
ZA984570B (en) | 1997-06-06 | 1999-11-29 | Unilever Plc | Cleaning compositions. |
HUP0101059A3 (en) * | 1998-02-10 | 2002-12-28 | Unilever Nv | Detergent tablet and process for its manufacture |
DE19843773A1 (de) * | 1998-09-24 | 2000-03-30 | Henkel Kgaa | Wasch- und Reinigungsmittelformkörper mit feinteiligen Aufbereitungskomponenten |
FR2784392B1 (fr) * | 1998-10-09 | 2000-11-17 | Rhodia Chimie Sa | Tablettes de composition detergente ou anticalcaire et leur mise en oeuvre en lave-vaisselle ou lave-linge |
GB9826097D0 (en) * | 1998-11-27 | 1999-01-20 | Unilever Plc | Detergent compositions |
DE19859807A1 (de) * | 1998-12-23 | 2000-06-29 | Henkel Kgaa | Phosphat-Compounds |
AU4566300A (en) * | 1999-06-29 | 2001-01-22 | Unilever Plc | Dish washing compositions |
GB2390853A (en) * | 2002-07-16 | 2004-01-21 | Reckitt Benckiser Nv | Cleaning composition containing hydrophobic component |
DE102011106092B4 (de) * | 2011-06-09 | 2024-01-11 | Budich International Gmbh | Mehrphasige Reinigertablette mit integriertem Entschäumer und ihre Verwendung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3315950A1 (de) * | 1983-05-02 | 1984-11-15 | Henkel KGaA, 4000 Düsseldorf | Verfahren zur herstellung von reinigungsmitteltabletten |
DE3541146A1 (de) * | 1985-11-21 | 1987-05-27 | Henkel Kgaa | Mehrschichtige reinigungsmitteltabletten fuer das maschinelle geschirrspuelen |
DE3634813A1 (de) * | 1986-10-13 | 1988-04-14 | Henkel Kgaa | Reinigungsmitteltabletten fuer das maschinelle geschirrspuelen |
DE4229650C1 (de) * | 1992-09-04 | 1994-01-05 | Henkel Kgaa | Verfahren zur Herstellung von Reinigungstabletten |
-
1995
- 1995-01-27 DE DE19502774A patent/DE19502774A1/de not_active Withdrawn
-
1996
- 1996-01-18 WO PCT/EP1996/000200 patent/WO1996023053A1/de active IP Right Grant
- 1996-01-18 EP EP96901299A patent/EP0871698B1/de not_active Expired - Lifetime
- 1996-01-18 DE DE59604972T patent/DE59604972D1/de not_active Expired - Fee Related
- 1996-01-18 AT AT96901299T patent/ATE191745T1/de not_active IP Right Cessation
- 1996-01-18 PT PT96901299T patent/PT871698E/pt unknown
- 1996-01-18 ES ES96901299T patent/ES2146382T3/es not_active Expired - Lifetime
-
1997
- 1997-07-25 FI FI973114A patent/FI973114A0/fi unknown
Also Published As
Publication number | Publication date |
---|---|
FI973114A (fi) | 1997-07-25 |
DE19502774A1 (de) | 1996-08-01 |
WO1996023053A1 (de) | 1996-08-01 |
EP0871698A1 (de) | 1998-10-21 |
ES2146382T3 (es) | 2000-08-01 |
FI973114A0 (fi) | 1997-07-25 |
PT871698E (pt) | 2000-10-31 |
DE59604972D1 (de) | 2000-05-18 |
ATE191745T1 (de) | 2000-04-15 |
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