EP0933421B1 - Produits de nettoyage en comprimés compacts sans phosphate - Google Patents

Produits de nettoyage en comprimés compacts sans phosphate Download PDF

Info

Publication number
EP0933421B1
EP0933421B1 EP97811000A EP97811000A EP0933421B1 EP 0933421 B1 EP0933421 B1 EP 0933421B1 EP 97811000 A EP97811000 A EP 97811000A EP 97811000 A EP97811000 A EP 97811000A EP 0933421 B1 EP0933421 B1 EP 0933421B1
Authority
EP
European Patent Office
Prior art keywords
tablet
carrier material
surfactants
cleaning agent
surfactant
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
Application number
EP97811000A
Other languages
German (de)
English (en)
Other versions
EP0933421A1 (fr
Inventor
Karin Kleeli
Hans Eggenschwiler
Rudolf Gitzi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mifa AG Frenkedorf
Original Assignee
Mifa AG Frenkedorf
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mifa AG Frenkedorf filed Critical Mifa AG Frenkedorf
Priority to EP97811000A priority Critical patent/EP0933421B1/fr
Priority to AT97811000T priority patent/ATE346133T1/de
Priority to DE59712770T priority patent/DE59712770D1/de
Publication of EP0933421A1 publication Critical patent/EP0933421A1/fr
Application granted granted Critical
Publication of EP0933421B1 publication Critical patent/EP0933421B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C11D3/08—Silicates
    • 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
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0082—Coated 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
    • C11D3/046—Salts
    • 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
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/128—Aluminium silicates, e.g. zeolites

Definitions

  • the present invention relates to a phosphate-free detergent tablet according to independent claim 1, and to a process for its preparation according to independent claim 9.
  • Detergents or cleaning agents in tablet form are enjoying increasing popularity, because they allow the required amount of detergent or detergent, in comparison to the addition of corresponding powdered agents to dose in a more defined unit quantity.
  • the use of a defined unit quantity of detergent or cleaning agent is also more convenient and safer, since spillage of the often aggressive substances is avoided.
  • a dishwashing detergent in the form of a multilayer tablet which contains a bleaching agent, a bleach activator, a silver / copper corrosion inhibitor and other conventional ingredients.
  • the silver / copper corrosion inhibitor is not contained together in a layer together with the bleaching agent and the bleach activator.
  • brittleness is essentially the surfactant or surfactants, which reduce the tablet hardness and thus prevent the sintering effect during pressing.
  • This brittleness and instability is further enhanced by the hygroscopicity of the substances contained in the tablets: hygroscopy causes more or less humidity to be absorbed by the tablet over time, significantly increasing the tablet's volume and further reducing tablet hardness.
  • the currently sold detergent tablets are offered in individualized packaging and must first be unpacked for their use by the user or user before they can be placed in the dispenser. Consequently, the currently marketed detergent tablets are ultimately unsatisfactory due to their brittleness and hygroscopicity, and thus their overall suppleness.
  • the object of the present invention was to provide a phosphate-free detergent for dishwashers in single-phase or multi-phase tablet form, which tablet contains one or more surfactants and which is so compact that it does not need to be packaged to prevent it with the time in the breaks goes.
  • Detergent tablet is generally to be understood as a tablet for cleaning purposes in machine-washing processes in dishwashers.
  • porous support material should be such that it is readily able to take up the surfactant or the surfactants.
  • Preferred porous support materials are disilicates, sulfates, zeolites or Mixtures thereof. These are present as salts, with their alkali metal salts, for example the sodium or potassium salts being particularly preferred.
  • the sodium disilicate (Na 6 Si 2 O 7 ), which belongs to the group of sorosilicates and is characterized by an excellent absorption capacity of surfactants.
  • Surfactants are the interfacial tension reducing substances because they have a hydrophilic and a hydrophobic part.
  • the use of surfactants in the detergent tablet according to the invention is on the one hand indispensable because they are responsible for the main wash action.
  • the surfactants cause the formation of interfaces on the individual surfaces of the grains, in which they are to be included and thus prevent a sintering effect during the pressing of tablets.
  • the surfactants have a fundamentally negative influence on the tablet hardness.
  • Nonionic low-foaming surfactants are used for the tablet according to the invention.
  • Very particularly preferred surfactants are ethylene oxide-propylene oxide (EO-PO) - adducts, such as surfactants under the trade name Plurafac ®.
  • the surfactant or the surfactants are incorporated or incorporated into the carrier material by means of a fluidizing mixer, for example a fluid bed mixer or an eddy current granulator.
  • a fluidizing mixer for example a fluid bed mixer or an eddy current granulator.
  • the level of surfactant should be at least 2.5% by weight, based on the total weight of the tablet.
  • inventive detergent or cleaning agent tablet is characterized by a Cover material off.
  • This coating material is applied to or around the powder grains consisting of carrier material / surfactant, thus causing a substantially complete, sealing of the powder grains and thus prevents the lowering of the tablet hardness by the surfactant or the surfactants.
  • the coating material (coating) must not displace the surfactant in the carrier material. It is quite desirable if the coating material (coating) has properties that are beneficial for the cleaning effect of the resulting tablet.
  • coating materials which are "co-builders” are used according to the invention.
  • the so-called “builders” themselves are builders that play a central role in the washing process. They not only contribute to the washing process themselves through specific effects, but also decisively influence the effect of other detergent components, for example the surfactants or bleaching agents. They do this, for example, by their possible binding capacity of polyvalent ions, or as ion transport agents or in textile washes by adsorption of molecularly disperse substances or heterocoagulation with pigments to prevent textile graying.
  • the coating materials used are water glass, soda or homopolymers and copolymers of polycarboxylic acids, in particular acrylic acid-maleic acid copolymers or a mixture thereof, these having the function of a co-builder.
  • the acrylic acid-maleic acid copolymer is a co-formable coating material.
  • the detergent tablet according to the invention contains 15-30% of the porous carrier material.
  • the content of surfactants is preferably between 2.5 to 5.0%.
  • the proportion of the coating material is preferably between 1-6%.
  • the surfactant content should have a value of at least 2.5% by weight, based on the total weight.
  • the inventive detergent or cleaning agent tablet may also contain other components, such as a silver or copper corrosion inhibitors, enzymes, perfume compounds, bleaching agents, stabilizers, activators, brighteners, foam inhibitors, corrosion inhibitors, dyes, adjusters and other auxiliary and fillers.
  • a silver or copper corrosion inhibitors such as a silver or copper corrosion inhibitors, enzymes, perfume compounds, bleaching agents, stabilizers, activators, brighteners, foam inhibitors, corrosion inhibitors, dyes, adjusters and other auxiliary and fillers.
  • a further aspect of the present invention is a process for making a detergent tablet.
  • incorporation of the surfactant (s) into the porous support material is carried out by spraying the surfactant or surfactants into the support material with or in a stream of air and at a temperature of about 15 to 45 ° C.
  • the incorporation of the surfactant or of the surfactants into the porous carrier material is preferably carried out by means of a fluidizing mixer, in particular by fluidized bed granulation or a fluidized bed mixer.
  • the resulting fully soaked powder is further mixed for between 20 and 50 minutes at a temperature of between 15 and 35 ° C, preferably about 30 ° C, so as to complete Diffusion of the surfactant or surfactants in the carrier material to effect.
  • the coating is applied by means of fluidized bed granulation on the powder grains.
  • the process is preferably carried out so that the coated powder grains are continuously dried at temperatures of between about 40-60 ° C, especially about 50-60 ° C.
  • this is preferably dried to a residual moisture content of ⁇ 5% by weight.
  • the sprayed granules are further vortexed for 30 minutes at 30 ° C, so as to give the surfactant mixture sufficient time to penetrate into the powder grains or to diffuse.
  • the coating is applied to the powder grains.
  • 70 kg of a 20% strength solution of an acrylic acid-maleic acid copolymer are sprayed in the eddy current granulator and dried continuously at a temperature of about 55 ° C during about 50 minutes. It is formed in this process, small coated powder grains having a mean grain size of about 0.5 mm. The resulting powder is essentially dust-free.
  • the product is dried at 50 ° C to a residual moisture of ⁇ 5% and discharged.
  • the powder is mixed by means of a mixer with other ingredients (trisodium citrate, sodium perborate, TAED, enzymes, soda) and the powder is poured into a press, where it is pressed into a tablet.
  • other ingredients trisodium citrate, sodium perborate, TAED, enzymes, soda
  • a two-phase detergent tablet two different powder granules are prepared in a first step.
  • a first component or powder mixture is prepared according to Example 1.
  • the second component or powder mixture corresponds with respect to the proportions of the first component, except that no benzotriazole is present, but 0.2 kg of a blue dye.
  • the finished and dried powder mixtures are ready mixed in a mixer and then the powder of the first layer is filled by means of a dosing aid, such as a Paddeldosierer, in the down-pulled lower punch.
  • a dosing aid such as a Paddeldosierer
  • the powder With the upper punch, the powder is then slightly compressed, so that there is still enough rough surface to sinter with the second component or powder mixture.
  • the lower punch moves back into the filling position, the second phase is filled and then pressed with high force.
  • the lower stamp is raised so that the scraper, the tablet can be guided by the turntable.

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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)
  • Medicinal Preparation (AREA)

Claims (15)

  1. Tablette de produit nettoyant pour lave-vaisselles moulée à la presse à partir de grains de poudre, qui contient un agent tensioactif ou plusieurs agents tensioactifs, caractérisée en ce que les grains de poudre comprennent
    a) une matière poreuse de support,
    b) l'unique agent tensioactif ou les agents tensioactifs incorporés à la matière de support et
    c) une matière de revêtement enrobant essentiellement en totalité les grains de poudre,
    les agents tensioactifs étant des agents tensioactifs non ionogènes, peu moussants, la proportion d'agent tensioactif dans la tablette présentant une valeur d'au moins 2,5 % en poids par rapport au poids total de la tablette, la matière de revêtement est un co-adjuvant qui est choisi dans le groupe comprenant le verre soluble, le carbonate de sodium ou un homopolymère ou copolymère d'un acide polycarboxylique ou d'un mélange d'acides carboxyliques, et la tablette contient 15 à 30 % en poids de la matière poreuse de support.
  2. Tablette de produit nettoyant selon la revendication 1, caractérisée en ce que la matière poreuse de support contient ou est constituée par des disilicates, des sulfates, des zéolites ou leurs mélanges, en particulier leurs sels de métaux alcalins.
  3. Tablette de produit nettoyant selon la revendication 2, caractérisée en ce que la matière poreuse de support contient ou est constituée par du silicate de sodium.
  4. Tablette de produit nettoyant selon l'une des revendications 1 à 3, caractérisée en ce que les agents tensioactifs non ionogènes peu moussants contiennent ou sont constitués par des agents tensioactifs à base de produits d'addition d'oxyde d'éthylène-oxyde de proylène.
  5. Tablette de produit nettoyant selon l'une des revendications 1 à 4, caractérisée en ce que le copolymère d'un acide polycarboxylique est un copolymère d'acide acrylique et d'acide maléique.
  6. Tablette de produit nettoyant selon l'une des revendications 1 à 5, caractérisée en ce qu'elle contient 2,5 à 5,0 % en poids d'un ou plusieurs agents tensioactifs.
  7. Tablette de produit nettoyant selon l'une des revendications 1 à 6, caractérisée en ce qu'elle contient 1 à 6 % en poids de la matière de revêtement.
  8. Tablette de produit nettoyant selon l'une des revendications 1 à 7, caractérisée en ce qu'elle contient en outre un anticorrosif protégeant l'argent et le cuivre, des enzymes, des composés parfumants, des agents de blanchiment, des agents stabilisants, des activateurs, des agents d'azurage optique, des inhibiteurs de mousse, des inhibiteurs de corrosion, des colorants, des agents fixateurs et/ou d'autres substances auxiliaires et d'autres charges.
  9. Procédé de production d'une tablette de produit nettoyant selon l'une des revendications 1 à 8, caractérisé en ce que
    a) un ou plusieurs agents tensioactifs non ionogènes peu moussants sont incorporés à une matière poreuse de support,
    b) les grains de poudre de matière de support et d'agent tensioactif ainsi produits sont munis d'un revêtement, ce qui produit un enrobage essentiellement total des grains de poudre, et
    c) les grains de poudre ainsi obtenus sont comprimés en formant une tablette.
  10. Procédé selon la revendication 9, caractérisé en ce que l'incorporation de l'agent ou des agents tensioactifs à la matière poreuse de support est effectuée avec un mélangeur fluidisant, en particulier par granulation tourbillonnaire, ou avec un mélangeur à lit fluide.
  11. Procédé selon l'une des revendications 9 ou 10, caractérisé en ce que l'incorporation de l'agent ou des agents tensioactifs à la matière poreuse de support est effectuée par pulvérisation de l'agent ou des agents tensioactifs dans la matière de support dans un flux d'air et à une température d'environ 15 à 45°C.
  12. Procédé selon la revendication 11, caractérisé en ce qu'après la pulvérisation de l'agent ou des agents tensioactifs à la matière de support, le produit d'addition formé est maintenu en turbulence pendant une durée comprise entre environ 20 et 50 minutes à une température comprise entre 15 et 35°C, avantageusement à environ 30°C.
  13. Procédé selon l'une des revendications 9 à 12, caractérisé en ce que le revêtement est appliqué sur les grains de poudre au moyen d'une granulation tourbillonnaire.
  14. Procédé selon la revendication 13, caractérisé en ce que les grains de poudre revêtus sont séchés en continu à des températures comprises entre environ 50 et 60°C.
  15. Procédé selon l'une des revendications 9 à 14, caractérisé en ce que le produit granulé obtenu est séché jusqu'à une teneur en humidité résiduelle inférieure à 5 % en poids.
EP97811000A 1997-12-18 1997-12-18 Produits de nettoyage en comprimés compacts sans phosphate Expired - Lifetime EP0933421B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP97811000A EP0933421B1 (fr) 1997-12-18 1997-12-18 Produits de nettoyage en comprimés compacts sans phosphate
AT97811000T ATE346133T1 (de) 1997-12-18 1997-12-18 Kompakte, phosphatfreie reinigungsmitteltablette
DE59712770T DE59712770D1 (de) 1997-12-18 1997-12-18 Kompakte, phosphatfreie Reinigungsmitteltablette

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP97811000A EP0933421B1 (fr) 1997-12-18 1997-12-18 Produits de nettoyage en comprimés compacts sans phosphate

Publications (2)

Publication Number Publication Date
EP0933421A1 EP0933421A1 (fr) 1999-08-04
EP0933421B1 true EP0933421B1 (fr) 2006-11-22

Family

ID=8230532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97811000A Expired - Lifetime EP0933421B1 (fr) 1997-12-18 1997-12-18 Produits de nettoyage en comprimés compacts sans phosphate

Country Status (3)

Country Link
EP (1) EP0933421B1 (fr)
AT (1) ATE346133T1 (fr)
DE (1) DE59712770D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6521581B1 (en) 2001-12-14 2003-02-18 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Water-soluble package with multiple distinctly colored layers of liquid laundry detergent
DE102004016497B4 (de) * 2004-04-03 2007-04-26 Henkel Kgaa Verfahren zur Herstellung von Granulaten und deren Einsatz in Wasch- und/oder Reinigungsmitteln

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9015503D0 (en) * 1990-07-13 1990-08-29 Unilever Plc Detergent composition
GB9422925D0 (en) * 1994-11-14 1995-01-04 Unilever Plc Detergent compositions
GB9526097D0 (en) * 1995-12-20 1996-02-21 Unilever Plc Process
DE19601841A1 (de) * 1996-01-19 1997-07-24 Henkel Kgaa Niotensidreiche Granulate und Verfahren zu ihrer Herstellung
DE19606765A1 (de) * 1996-02-23 1997-08-28 Henkel Kgaa Verfahren zur Herstellung von Geschirrspülmitteltabletten

Also Published As

Publication number Publication date
DE59712770D1 (de) 2007-01-04
EP0933421A1 (fr) 1999-08-04
ATE346133T1 (de) 2006-12-15

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