DE69833335T2 - detergent tablet - Google Patents

Abstract

According to the present invention there is provided a detergent tablet comprising a compressed portion and a non compressed portion wherein the compressed portion comrpises a mould and dissolves at a faster rate than the non-compressed portion on a weight by weight basis, measured using the SOTAX dissolution test method descrived herein and the non-compressed portion is at least partially retained with the mould.

Description

TECHNICAL TERRITORY

The The present invention relates to a detergent tablet comprising a Compressed part and a non-compressed part, wherein the compressed part dissolves faster than the uncompressed one Part and the non-compressed part includes a finishing additive.

BACKGROUND

Detergent Compositions in tablet form are known in the art. It is obvious that Detergent compositions in tablet form compared to detergent compositions in particulate form have several advantages, such as ease of handling, Transportability and storage.

Detergent tablets become the most common by premixing ingredients of a detergent composition and molding the premixed detergent ingredients into a tablet made using a tablet press. Be tablets usually by compression of the detergent ingredients to one Shaped tablet. However, the Applicant has found that some Constituents of a detergent composition by the compression pressure, which is used to form the tablets negatively affected become. So far these ingredients could not be converted into a tablet composition be included without degrading their properties were. In some cases can these components are even unstable due to compression or have become inactive.

Further become the components of the detergent composition when compressed be, in big Close to each other brought. A result of the great Near the Ingredients may be that certain of the ingredients interact with each other react, making them unstable, inactive or ineffective. A solution of this Problems, as seen in the prior art, was the separation of Detergent compositions that may react with each other, especially when the ingredients are pressed in tablet form. The separation of the ingredients was for example by manufacturing of multi-layered tablets, in which the ingredients, possibly react with each other, located in different layers of the tablet. Multi-layer tablets become conventional produced by several compression steps. Tablet layers, which are subjected to more than one compression step a cumulative and potentially larger total compression pressure subjected. An increase The compression pressure is known to lower the dissolution rate a tablet with the effect that several layers at Do not use satisfactorily.

It Other methods have been described which allow the separation of Detergent ingredients is achieved. For example, describes EP-A 0,224,135 a dishwashing detergent in a form comprising a melt soluble in warm water, in one soluble in cold water Tablet is pressed. The document teaches a detergent composition, which consists of two parts, with the first part in the Vorspülflotte dissolves and the second part dissolves in the main washflask of the dishwasher.

EP-B-0,055,100 describes a toilet block by combining a slowly dissolving molding is formed with a tablet. The toilet block is designed that he put in the cistern a Toilet is given and over a period of days, preferably weeks, dissolves. When Means for controlling the resolution of the toilet block, the document teaches mixing one or two several solubility control agents. examples for such solubility control agents are paradichlorobenzene, waxes, long chain fatty acids and Alcohols and esters thereof and fatty alkylamides.

EP-A-224.135 describes a dishwashing detergent in a form comprising a melt soluble in warm water, in a tablet soluble in cold water is pressed. The document teaches a detergent composition, which consists of two parts, with the first part in the Vorspülflotte dissolves and the second part dissolves in the main washflask of the dishwasher.

Of the Applicant has found that by providing a detergent tablet, which has a compressed part and an uncompressed part, Detergent ingredients previously considered unacceptable for detergent tablets can be included in a detergent tablet. In addition, possibly reactive components of the detergent composition effectively separated become.

Another advantage of using a detergent tablet as described herein is the leis Improvements can be made by making it possible to make a detergent tablet where the compressed part dissolves faster than the non-compressed part.

SUMMARY THE INVENTION

• a) der komprimierte Teil eine vorbereitete Vertiefung oder Mulde aufweist und sich, bezogen auf das Gewicht und gemessen anhand des hierin beschriebenen SOTAX-Auflösungstestverfahrens, schneller auflöst als der nichtkomprimierte Teil; und
• b) der nichtkomprimierte Teil zumindest teilweise in der Mulde gehalten wird.

According to the invention, there is provided a detergent tablet comprising a compressed part and a non-compressed part, wherein:

• a) the compressed part has a prepared pit or trough and, based on the weight and measured by the SOTAX dissolution test method described herein, dissolves faster than the non-compressed part; and
• b) the non-compressed part is at least partially held in the trough.

In a further aspect of the present invention, there is provided a detergent tablet comprising a compressed portion and a non-compressed portion having a finishing additive, wherein the compressed portion dissolves faster by weight and as measured by the SOTAX dissolution test method described herein as the non-compressed part and wherein the density of the non-compressed part is at least 0.2 g / cm ³ below the density of the compressed part.

• a) sich der komprimierte Teil, bezogen auf das Gewicht und gemessen anhand des hierin beschriebenen SOTAX-Auflösungstestverfahrens, schneller auflöst als der nichtkomprimierte Teil; und
• b) der nichtkomprimierte Teil einen Endbehandlungszusatz umfasst und frei von Metasilicaten ist.

In yet another aspect of the present invention, there is provided a detergent tablet comprising a compressed portion and a non-compressed portion, wherein:

• a) the compressed part, by weight and measured by the SOTAX dissolution test method described herein, dissolves faster than the non-compressed part; and
• b) the non-compressed part comprises a finishing additive and is free of metasilicates.

• a) sich der komprimierte Teil, bezogen auf das Gewicht und gemessen anhand des hierin beschriebenen SOTAX-Auflösungstestverfahrens, schneller auflöst als der nichtkomprimierte Teil; und
• b) der nichtkomprimierte Teil einen Endbehandlungszusatz umfasst, bei dem es sich um einen Wäscheweichmacher oder ein Spülhilfsmittel handelt.

In yet another aspect of the present invention, there is provided a detergent tablet comprising a compressed portion and a non-compressed portion, wherein:

• a) the compressed part, by weight and measured by the SOTAX dissolution test method described herein, dissolves faster than the non-compressed part; and
• b) the non-compressed part comprises a finishing additive which is a fabric softener or a rinse aid.

DETAILED DESCRIPTION OF THE INVENTION

Of the compressed part of the present invention dissolves by weight and measured by the Sotax dissolution test method, below is displayed faster than the non-compressed part. This Difference in the dissolution rate means that components of the compressed and uncompressed Parts at various points of the wash or rinse cycle the washing machine can be delivered to the wash water.

For the purpose In the present invention, the compressed part has a faster one dissolution rate on as the non-compressed part, which means that the ingredients of the compressed part before the components of the uncompressed Part to be delivered to the wash water. In another aspect of the present invention the non-compressed part is at a temperature below 30 ° C. Of the compressed part of the detergent tablet starts immediately to dissolve on contact with water. Preferably solve at least 60%, stronger preferably at least 80%, the strongest preferably at least 95% of the compressed part within 12 minutes in deionized water at 50 ° C.

Of the non-compressed part comprises at least one finishing additive, as described below. Finishing additives are ingredients that either provide a cleaning benefit, e.g. An enzyme, make the re-deposition of dirt difficult, z. B. an organic polymeric compound, or run better water, z. B. a nonionic surfactant. The uncompressed part starts at Contact with water also dissolve, however, is the slower dissolution rate of the non-compressed part such that less than 40%, preferably less than 20%, the strongest preferably less than 10% or even 5% of the uncompressed Partly dissolve in deionized water at 50 ° C within 12 minutes.

In an alternative embodiment of the present invention, the non-compressed part dissolves in the rinse cycle of the washing machine. In this embodiment, the finishing additive may be either a fabric softener or a rinse aid. The fabric softener is dispensed into the rinse cycle of the laundry washing machine after the clothes have been washed and makes the Fabric soft. The rinse aid is dispensed into the rinse cycle of the dishwasher, allowing water to drain better from the dishes and reducing stain and filming. In this embodiment of the present invention, it is contemplated that the non-compressed portion will not begin to dissolve in the first 12 minutes of the wash cycle or that it will begin to dissolve in the rinse cycle.

The delayed resolution of the non-compressed part will be explained in more detail below described.

compressed part

Of the compressed part of the detergent tablet comprises at least one Detergent component, but preferably comprises a mixture of more than one detergent ingredient, which are then compressed to to form a tablet. Any detergent ingredient conventionally used in Detergent tablets is known for inclusion in the compressed Part of the detergent tablets of the invention suitable. Suitable active detergent ingredients are described below. Preferred active detergent ingredients close builder compound, Surfactant, bleach, bleach activator, bleach catalyst, enzyme and an alkalinity source.

The Detergent composition (s) present in the compressed layer can optionally in combination with a carrier and / or a binder, z. Water, polymer (eg PEG), liquid silicate become. The detergent compositions are preferably in particulate form (i.e., powder or granule form) and can be determined by be prepared by any known method, for example conventional spray drying, Granulation or agglomeration.

The particulate (s) Detergent component (s) are made using any device for Compressing compressed tablets, blocks, bricks or pressed pieces, the more detailed below are described.

In a preferred embodiment The compressed parts additionally comprise a disintegrant. The Disintegrants may be a disintegrating agent or an effervescent be. Suitable disintegrants include agents which upon contact swelling with water or the inflow and / or outflow of Water by forming channels in the compressed and / or uncompressed parts. Any known decomposition or effervescent agent for use in laundry or dishwashing applications is, comes to this Use in consideration. Suitable disintegrating agents include starch, starch derivatives, Alginates, carboxymethylcellulose (CMC), CMC-based polymers, Sodium acetate, alumina. Suitable effervescing agents are those which produce gas when in contact with water. Suitable sparkling agents can Developing oxygen, nitrogen dioxide or carbon dioxide Be a species. examples for preferred effervescent agents can selected be from the group consisting of perborate, percarbonate, carbonate, Bicarbonate and carboxylic acids, like citric acid or maleic acid.

The density of the compressed part is typically in the range of 1.3 g / cm ³ to 1.9 g / cm ³ , more preferably from 1.4 g / cm ³ to 1.8 g / cm ³ , most preferably from 1.4 g / cm ³ to 1.7 g / cm ³ .

The Density is achieved by dividing the weight (mass) of the compressed one Partly calculated by the volume of the compressed part. The volume is by multiplying the length times the depth times the width of the compressed part.

not Compressed part

Of the non-compressed part includes a finishing additive may but also include one or more detergent ingredients. Detergent ingredients, the for inclusion in the non-compressed part are suitable include ingredients containing one or more detergent ingredients present in the compressed part are present, interact. If more detergent ingredients in the non-compressed part, preferred Ingredients are those negatively affected by the compression pressure be influenced, for example by a tablet compression press. examples for Such detergent ingredients include, but are not limited to, Enzyme, anticorrosive and perfume. These ingredients are more detailed below described.

The finishing additive and the optional detergent ingredient (s) may be in any form, for example, in particulate (ie, powder or granule), gel, or liquid form. The non-compressor The part may optionally also comprise a carrier component. The detergent ingredient may be in the form of a solid, gel or liquid prior to combination with a carrier ingredient.

Of the uncompressed portion of the detergent tablet may be in solid, in Gel or in liquid Form present.

The Detergent tablet of the present invention requires that the uncompressed part is brought to the compressed part so that the compressed part and the non-compressed part are each other touch. Of the Uncompressed part can be in solid or in flowable form be brought to the compressed part. If the uncompressed Part is in solid form, it is prepared in advance, optionally shaped and then brought to the compressed part. The uncompressed Part is then set in a preformed compressed area, for example by adhesion or by introducing the non-compressed Part of a cooperating surface of the compressed part. Preferably, the compressed part comprises a pre-fabricated one Depression or trough into which the non-compressed part is brought becomes.

Of the non-compressed part is preferably in flowable form to the compressed Part brought. The uncompressed part is then compressed Part determined, for example, by adhesion, by forming a coating over the uncompressed layer to this at the compressed area too fasten, or by hardening, for example, (i) by cooling below the melting point where the flowable composition is solidified Melt is; (ii) by evaporation of a solvent; (iii) by crystallization; (iv) by polymerizing a polymeric constituent of the flowable, non-compressed Part; (v) by pseudoplastic properties, where the flowable, uncompressed Part of a polymer includes and shear forces on the non-compressed Part to be created; (vI) by combining a binder with the flowable, non-compressed Part. In an alternative embodiment It can be the flowable, uncompressed Part to act around an extrudate attached to the compressed part is, for example, any of the above Mechanism or by expansion of the extrudate on the parameters a trough provided by the compressed part.

in the In the first aspect of the invention, the compressed part comprises one in advance made depression or trough (hereinafter referred to as "trough"), in which is the uncompressed part brought. In an alternative embodiment includes the surface of the compressed section more than one trough into which the uncompressed one Section can be brought. The trough (s) preferably take at least partially one or more non-compressed parts. The non-compressed part (s) become uncompressed parts then placed in the trough and fixed to the compressed part, as described above.

Of the non-compressed part may comprise particles. The particles can be based be prepared by any known method, for example by conventional Spray drying, Granulation, encapsulation or agglomeration. Particles can pass through Incorporating a binder or by forming a coating layer over the binder uncompressed part of the compressed part.

If the non-compressed part comprises a solidified melt the melt by heating a composition containing the finishing additive and one or more a plurality of optional detergent and / or carrier components, via the Melting point prepared to form a flowable melt. The flowable melt is then poured into a well and allowed to cool. While the melt cools, it solidifies, taking the shape of the trough at ambient temperature accepts. If the composition contains one or more carrier ingredients includes, can the vehicle components above their melting point heated and then the active detergent ingredient may be added become. Vehicle components, the for the production of a solidified melt are suitable are usually non-active ingredients that are heated above the melting point can, to a liquid to form, and to be cooled can, to form an intermolecular matrix which is the finishing additive and effectively retain optional detergent ingredients. One preferred carrier component is an organic polymer that solidifies at ambient temperature. Preferably, the carrier component is polyethylene glycol (PEG). The compressed part of the cleaning tablet is preferably a trough ready to receive the melt.

The flowable, non-compressed portion may be in a form containing a dissolved or suspended finishing additive and optionally a detergent component. The flowable, non-compressed portion may cure over time to form a solid, semi-solid, or highly viscous liquid by any of the methods described above. In particular, the flowable, non-compressed part can cure by evaporation of a solvent. Solvents suitable for this purpose Any suitable solvents may include any known solvents in which a binding or gelling agent is soluble. Preferred solvents may be polar, non-polar, non-aqueous or anhydrous and may include, for example, water, glycerol, alcohol (eg, ethanol, acetone), and alcohol derivatives. In an alternative embodiment, more than one solvent may be used.

Of the flowable, non-compressed Part may comprise one or more binding or gelling agents. each Binding or gelling agent that acts to increase the composition becomes solid, semi-solid or highly viscous over time is incorporated herein taken into consideration. Without wanting to be tied to a theory, It is believed that mechanisms by which the connective or Gelling agent causes a non-solid composition to solidify, semi-solid or high viscosity, will include the following: chemical Reaction (such as chemical crosslinking) or interaction between two or more ingredients in the flowable compositions; Dry or physical interaction of the binder with a component the composition.

In A preferred aspect of the present invention comprises non-compressed part of a gel. In this aspect, the gel becomes too but it is brought to the compressed part of the detergent tablet preferably introduced into a trough which is compressed from the Part is provided.

The Gel includes a thickening system in addition to the finishing additive and other optional detergent compositions. In addition, can The gel also includes solid ingredients to control the viscosity of the gel in connection with the thickening system. firm Ingredients can also serve to selectively rupture the gel, thereby reducing the dissolution of the gel Gels supported becomes. When ingested, the gel fraction usually includes at least 15% solids, more preferably at least 30 % solids and strongest preferably at least 40% solid ingredients. Due to the need the ability to Pumping or otherwise processing the gel closes the gel usually not more than 90% solid ingredients.

• a) Flüssiges Verdünnungsmittel: Der Ausdruck „Lösungsmittel" oder „Verdünnungsmittel" wird hierin verwendet, um den flüssigen Teil des Verdickungssystems zu bezeichnen. Obwohl einige der Bestandteile des nichtkomprimierten Teils sich tatsächlich in der „Lösungsmittel" enthaltenden Phase auflösen können, können andere Bestandteile als teilchenförmiges Material vorhanden sein, das in der „Lösungsmittel" enthaltenden Phase dispergiert ist. Somit bedeutet der Ausdruck „Lösungsmittel" nicht, dass die Bestandteile des nichtkomprimierten Teils in der Lage sein müssen, sich in dem Lösungsmittel tatsächlich aufzulösen. Geeignete Arten von Lösungsmitteln, die in den nichtwässrigen Verdickungssystemen hierin geeignet sind, schließen Alkylenglycolmononiederalkylether, Propylenglycole, ethoxyliertes oder propoxyliertes Ethylen oder Propylen, Glycerolester, Glyceroltriacetat, niedermolekulare Polyethylenglycole, niedermolekulare Methylester und Amide ein. Ein bevorzugter Typ nichtwässrigen Lösungsmittels zum diesbezüglichen Gebrauch umfasst die Mono-, Di-, Tri- oder Tetra-C₂-C₃-alkylenglycolmono-C₂-C₆-alkylether. Die spezifischen Beispiele solcher Verbindungen schließen Diethylenglycolmonobutylether, Tetraethylenglycolmonobutylether, Dipropylenglycolmonoethylether und Dipropylenglycolmonobutylether ein. Diethylenglycolmonobutylether und Dipropylenglycolmonobutylether sind besonders bevorzugt. Verbindungen dieses Typs werden handelsüblich unter den Handelsbezeichnungen Dowanol, Carbitol und Cellosolve vertrieben. Ein weiterer bevorzugter Typ hierin nützlichen nichtwässrigen Lösungsmittels umfasst die niedermolekularen Polyethylenglycole (PEGs). Solche Materialien sind diejenigen mit Molekulargewichten von mindestens 150. PEGs mit einem Molekulargewicht im Bereich von 200 bis 600 sind am meisten bevorzugt. Eine noch weitere bevorzugte Art von nichtwässrigem Lösungsmittel umfasst niedermolekulare Methylester. Solche Materialien sind diejenigen der allgemeinen Formel: R¹-C(O)-OCH₃, worin R¹ im Bereich von 1 bis 18 liegt. Beispiele für geeignete niedermolekulare Methylester schließen Methylacetat, Methylpropionat, Methyloctanoat und Methyldodecanoat ein. Das bzw. die verwendeten nichtwässrigen organischen Lösungsmittel sollten natürlich mit dem Endbehandlungszusatz und anderen optionalen Detergensbestandteilen, z. B. Enzymen, verträglich und nicht reaktiv sein. Solch ein Lösungsmittelbestandteil wird im Allgemeinen in einer Menge von 10 Gew.-% bis 60 Gew.-% des Gelanteils verwendet. Stärker bevorzugt umfasst das nichtwässrige, niederpolare organische Lösungsmittel 20 Gew.-% bis 50 Gew.-% des Gelanteils, am stärksten bevorzugt 30 Gew.-% bis 50 Gew.-% des Gelanteils.
• b) Gelierungszusatz: Ein Gelierungsmittel oder -zusatz wird dem nichtwässrigen Lösungsmittel der vorliegenden Erfindung zugesetzt, um das Verdickungssystem zu vervollständigen. Um das Gel zu bilden, das für eine geeignete Phasenstabilität und annehmbare Rheologie des Gels erforderlich ist, liegt das organische Gelierungsmittel im Allgemeinen bis zu dem Maß vor, dass das Verhältnis von Lösungsmittel zu Gelierungsmittel in dem Verdickungssystem in der Regel im Bereich von 99:1 bis 1:1 liegt. Stärker bevorzugt liegt das Verhältnis im Bereich von 19:1 bis 4:1. Die bevorzugten Gelierungsmittel der vorliegenden Erfindung werden ausgewählt aus Rizinusölderivaten, Polyethylenglycol, Sorbitolen und verwandten organischen Thixatropen, organophilen Tonen, Cellulose und Cellulosederivaten, Pluronics, Stearaten und Stearatderivaten, Zucker/ Gelatine-Kombination, Stärken, Glycerol und Derivaten davon, organischen Säureamiden, wie N-Lauryl-L-glutaminsäure-di-n-butylamid, Polyvinylpyrrolidon und Mischungen davon. Die bevorzugten Geliermittel schließen Rizinusölderivate ein. Rizinusöl ist ein natürlich vorkommendes Triglycerid aus dem Samen von Ricinus communis, einer Pflanze, die in den meisten tropischen oder subtropischen Gebieten wächst. Die Fettsäure-Haupteinheit im Rizinusöltriglycerid ist Ricinolsäure (12-Hydroxyölsäure). Sie macht 90 % der Fettsäureeinheit aus. Der Rest besteht aus Dihydroxystearin-, Palmitin-, Stearin-, Öl-, Linol-, Linolen- und Eicosaneinheiten. Das Hydrieren des Öls (z. B. durch Wasserstoff unter Druck) wandelt die Doppelbindungen in den Fettsäureeinheiten in Einfachbindungen um, wodurch das Öl „gehärtet" wird. Die Hydroxygruppen sind von dieser Reaktion nicht betroffen. Daher weist das dadurch hergestellte gehärtete Rizinusöl durchschnittlich etwa drei Hydroxylgruppen pro Molekül auf. Man nimmt an, dass die Anwesenheit dieser Hydroxylgruppen weitgehend für die im Vergleich zu ähnlichen flüssigen Detergenszusammensetzungen, die kein Rizinusöl mit Hydroxylgruppen in ihren Fettsäureketten enthalten, hervorragenden Struktureigenschaften verantwortlich ist, die dem Gelanteil verliehen werden. Zur Verwendung in den Zusammensetzungen der vorliegenden Erfindung sollte das Rizinusöl auf eine Iodzahl von unter 20 und vorzugsweise unter 10 hydriert werden. Die Iodzahl ist ein Maß für den Grad der Nichtsättigung des Öls und wird anhand des „Wijis-Verfahrens" gemessen, das in der Technik gut bekannt ist. Nichthydriertes Rizinusöl weist eine Iodzahl von 80 bis 90 auf. Gehärtetes Rizinusöl ist ein im Handel erhältlicher Artikel und wird zum Beispiel in verschiedenen Güteklassen unter der Marke CASTOR-WAX.RTM. von NL Industries, Inc. Highstown; New Jersey verkauft. Weitere geeignete gehärtete Rizinusölderivate sind Thixcin R, Thixcin E, Thixatrol ST, Perchem R und Perchem ST, hergestellt von Rheox, Laporte. Besonders bevorzugt wird Thixatrol ST.

As previously indicated, the gel comprises a thickening system to impart the required viscosity or thickness to the gel. The thickening system typically comprises a nonaqueous liquid thickener and an organic or polymeric gelling additive:

• a) Liquid Diluent: The term "solvent" or "diluent" is used herein to refer to the liquid portion of the thickening system. Although some of the components of the non-compressed part may actually dissolve in the "solvent" containing phase, other ingredients may be present as particulate matter dispersed in the "solvent" -containing phase. Thus, the term "solvent" does not mean that the components of the non-compressed portion must be capable of actually dissolving in the solvent Suitable types of solvents useful in the nonaqueous thickening systems herein include alkylene glycol mono-lower alkyl ethers, propylene glycols, ethoxylated or propoxylated Ethylene or propylene, glycerol ester, glycerol triacetate, low molecular weight polyethylene glycols, low molecular weight methyl esters and amides A preferred type of nonaqueous solvent for use herein comprises the mono-, di-, tri- or tetra-C ₂ -C ₃ alkylene glycol mono C ₂ -C ₆ alkyl ethers. The specific examples of such compounds include diethylene, Tetraethylenglycolmonobutylether, dipropylene glycol monoethyl ether and dipropylene glycol monobutyl ether one. diethylene and dipropylene glycol monobutyl ether are especially preferred. compounds this of this type are commercially available under the trade names Dowanol, Carbitol and Cellosolve. Another preferred type of non-aqueous solvent useful herein comprises the low molecular weight polyethylene glycols (PEGs). Such materials are those having molecular weights of at least 150. PEGs having a molecular weight in the range of 200 to 600 are most preferred. Yet another preferred type of non-aqueous solvent includes low molecular weight methyl esters. Such materials are those of the general formula: R ¹ -C (O) -OCH ₃ wherein R ^{1 is} in the range of 1 to 18. Examples of suitable low molecular weight methyl esters include methyl acetate, methyl propionate, methyl octanoate and methyl dodecanoate. The non-aqueous organic solvent (s) used should, of course, be combined with the finishing additive and other optional detergent ingredients, e.g. As enzymes, be compatible and non-reactive. Such a solvent component is generally used in an amount of from 10% to 60% by weight of the gel portion. More preferably, the nonaqueous, low polar organic solvent comprises from 20% to 50% by weight of the gel portion, most preferably from 30% to 50% by weight of the gel portion.
• b) Gelling additive: A gelling agent or additive is added to the non-aqueous solvent of the present invention to complete the thickening system. In general, to form the gel required for proper phase stability and gel rheology, the organic gelling agent is present to the extent that the solvent to gelling ratio in the thickening system is typically in the range of 99: 1 to 1: 1. More preferably, the ratio is in the range of 19: 1 to 4: 1. The preferred gelling agents of the present invention are selected from castor oil derivatives, polyethylene glycol, sorbitols and related organic thixatropes, organophilic clays, cellulose and cellulose derivatives, Pluronics, stearates and stearate derivatives, sugar / gelatin combination, starches, glycerol and derivatives thereof, organic acid amides such as N Lauryl-L-glutamic acid di-n-butylamide, polyvinylpyrrolidone and mixtures thereof. The preferred gelling agents include castor oil derivatives. Castor oil is a naturally occurring triglyceride from the seed of Ricinus communis, a plant that grows in most tropical or subtropical areas. The main fatty acid unit in castor oil triglyceride is ricinoleic acid (12-hydroxyoleic acid). It makes up 90% of the fatty acid unit. The remainder consists of dihydroxystearin, palmitic, stearic, oleic, linoleic, linolenic and eicosan units. Hydrogenation of the oil (eg, by hydrogen under pressure) converts the double bonds in the fatty acid moieties into single bonds, thereby "hardening" the oil.The hydroxy groups are not affected by this reaction, therefore the cured castor oil produced thereby has about an average It is believed that the presence of these hydroxyl groups is largely responsible for the excellent structural properties imparted to the gel portion as compared to similar liquid detergent compositions containing no castor oil with hydroxyl groups in their fatty acid chains Compositions of the present invention should hydrogenate the castor oil to an iodine value of below 20 and preferably below 10. The iodine value is a measure of the degree of unsaturation of the oil and is measured by the Wijis method, which is well known in the art , Unhydrogenated castor oil has an iodine value of 80 to 90. Hardened castor oil is a commercially available product and is marketed, for example, in various grades under the trademark CASTOR-WAX.RTM. from NL Industries, Inc. Highstown; New Jersey sold. Other suitable hydrogenated castor oil derivatives are Thixcin R, Thixcin E, Thixatrol ST, Perchem R and Perchem ST, manufactured by Rheox, Laporte. Particularly preferred is thixatrol ST.

If Polyethylene glycols are used as gelling agents rather than as solvents, they are low molecular weight materials with a Molecular weight in the range of 1,000 to 10,000, with 3,000 to 8,000 strongest is preferred.

When cellulose and cellulose derivatives are used in the present invention, they preferably include the following: i) cellulose acetate and cellulose acetate phthalate (CAP); ii) hydroxypropyl methylcellulose (HPMC); iii) carboxymethylcellulose (CMC); and mixtures thereof. The hydroxypropylmethylcellulose polymer preferably has a number average molecular weight of 50,000 to 125,000 and a viscosity of a 2 wt% aqueous solution at 25 ° C (ADTMD2363) of 50 to 100 Pas (50,000 to 100,000 cP). An especially preferred hydroxypropyl cellulose polymer is Methocel ^® J75MS-N wherein a 2.0 wt solution at 25 ° C .-% and a viscosity of about 75 Pas (75,000 cP).

at the sugar may be any monosaccharide (eg glucose), Disaccharide (eg, sucrose or maltose) or polysaccharide. The strongest preferred sugar is the commonly available sucrose. For the purpose The present invention may be type A or type gelatin B can be used, available for example from Sigma. A type A gelatin is preferred since they are more stable in alkaline than B-type gelatin Conditions is. A preferred gelatin also has a bloom number 65 and 300, the strongest preferably between 75 and 100.

The gel may contain a number of other ingredients in addition to the thickening agents described above and the finishing additives described in more detail below. Ingredients such as dyes may be included as well as structure modifiers. Structure modifying agents include various polymers and blends of polymers including polycarboxylates, carboxymethylcelluloses and starches to assist in absorption of excess solvent and / or to reduce or prevent "bleeding" or escape of the solvent from the gel portion, shrinkage or tearing In addition, hardness modifiers may be included in the thickening system to adjust the hardness of the gel, if desired These hardness control agents are typically of various polymers such as polyethylene glycols , Poly ethylene oxide, polyvinylpyrrolidone, polyvinyl alcohol, hydroxystearic acid and polyacetic acid, and when incorporated, are typically used in concentrations of less than 20% by weight and more preferably less than 10% by weight of the solvent in the thickening system.

The Gel is formulated to be a slightly elevated temperature from about 30 ° C or more a pumpable, flowable gel is to provide greater flexibility in the Preparation of the detergent tablet to allow, but at ambient temperatures high viscosity becomes or hardens, so that the gel while the shipping and handling of the detergent tablet in the compressed Part stays in place. This hardening of the gel can be, for example (i) by cooling below the flow temperature of the gel or by the omission of shear, (ii) by solvent transfer, for example, either to the atmosphere of the compressed body part; or (iii) can be achieved by polymerization of the gelling agent. Preferably, the gel is formulated to cure sufficiently the maximum force required to place a probe in the uncompressed Part to push, preferably in the range of 0.5 N to 40 N. The force can be characterized by measuring the maximum force which is required to use a probe equipped with a strain gauge is over to push a set distance into the gel. The fixed Range can be between 40% and 80% of total money. This force can be read on a QTS 25 tester using a probe of 5 mm diameter are measured. Typical measured forces are in the range of 1 N to 25 N.

If the non-compressed part is an extrudate, the extrudate will go through Premixing detergent ingredients of the non-compressed part with optional carrier components prepared to form a viscous paste. The viscous paste is then removed by means of a suitable, generally available extrusion device, for example, a single or twin screw extruder, for example available from APV Baker, Peterborough, UK, extruded. The extrudate is then either after delivery to the compressed part or before cut to size on the compressed portion of the detergent tablet. In some aspects of the present invention, the compressed comprises Part of the tablet preferably a trough into which the extruded, uncompressed part can be introduced.

In a preferred embodiment the non-compressed part is coated with a coating layer. The coating can be used to uncompressed the compressed part Set part. This can be particularly advantageous if the non-compressed part flowable particles, Gels or liquids includes.

The coating layer preferably comprises a material which after contact with the compressed and / or uncompressed parts within preferably less than 15 minutes, stronger preferably less than 10 minutes, even more preferably less than 5 minutes, the strongest preferably less than 60 seconds, solidifies. Preferably, the coating layer is water soluble. Preferred coating layers include materials that are selected are from the group consisting of fatty acids, alcohols, diols, esters and Ethers, adipic acid, Carboxylic acid, dicarboxylic acid, Polyvinyl acetate (PVA), polyvinylpyrrolidone (PVP), polyacetic acid (PLA); Polyethylene glycol (PEG) and mixtures thereof. Preferred carboxylic acids or dicarboxylic acids preferably comprise an even number of carbon atoms. Preferably include carboxylic acids or dicarboxylic acids at least 4, more preferably at least 6, even more preferably at least 8 Carbon atoms, most preferably between 8 and 13 carbon atoms. Preferred dicarboxylic acids include adipic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid and Mixtures thereof. Preferred fatty acids are those having a carbon chain length of C12 to C22, most preferably C18 to C22. The coating layer may further preferably comprise a disintegrant. If present, the overcoat layer is generally in a proportion of at least 0.05%, preferably at least 0.1%, stronger preferably at least 1%, the strongest preferably at least 2% or even at least 5% of the detergent tablet available.

When alternative embodiment can the coating layer wrap the detergent tablet. In this embodiment is the coating layer in an amount of at least 4%, more preferably at least 5 %, the strongest preferably at least 10% of the detergent tablet is present.

The density of the non-compressed part is generally 0.7 g / cm ³ to 1.2 g / cm ³ , more preferably 0.8 g / cm ³ to 1.2 g / cm ³ , most preferably 0, 9 g / cm ³ to 1.1 g / cm ³ . The density of the non-compressed part is preferably at least 0.2 g / cm ³ , more preferably at least 0.3 g / cm ³ , most preferably at least 0.4 g / cm ³ below the density of the compressed part.

Density measurement of the non-compressed part: Preferably, the density of the uncompressed Partly measured on the basis of a simple funnel / beaker device, consisting of a conical funnel rigidly formed on the base and provided with a flap valve on its lower extension to allow the contents of the funnel to become an axially oriented cylindrical one Cup of known volume is emptied, which is located under the funnel. The funnel is 130 mm high and has an inside diameter of 130 mm or 40 mm at its upper or lower end. It is placed with the lower appendix 140mm above the upper surface of the base. The vessel has a total height of 90 mm, an inside height of 87 mm and an inside diameter of 84 mm. Its nominal volume is 500 ml.

A Density measurement is done by hand by holding the non-compressed pour into the funnel. Once the funnel is full, the flap valve is opened, and you leave Run the powder through the funnel, overflowing the beaker. Of the filled Mug is taken off the shelf, and excess uncompressed portion will guide you through of a device with a straight edge, z. As a knife, removed over its upper edge. The stuffed Cup is then weighed. The weight of the non-compressed part By subtracting the weight of the cup from the weight of the cup Bechers plus uncompressed part calculated. The density becomes then by dividing the weight (mass) of the uncompressed Partly calculated by the volume of the cup. Repeated measurements are carried out as required.

The Detergent tablet of the present invention is according to a prepared herein.

Delayed resolution of the non-compressed part

Delayed dissolution of the non-compressed portion can be achieved, for example, by selecting particulate detergent ingredients for use as components of the non-compressed portion wrapped with a component that slowly or only partially dissolves in water. Such wrapping materials include cellulose and cellulose derivatives, e.g. Cellulose acetate, cellulose acetate phthalate (CAP), hydroxypropylmethylcellulose (HPMC), carboxymethylcellulose (CMC) and mixtures thereof. The hydroxypropylmethylcellulose polymer preferably has a number average molecular weight of 50,000 to 200,000 and a viscosity of a 2 wt% aqueous solution at 25 ° C (ADTMD2363) of 50 to 120 Pas (50,000 to 120,000 cP). An especially preferred hydroxypropyl cellulose polymer is Methoce ^® J75MS-N wherein a 2.0 wt% aqueous solution at 25 ° C .- a viscosity of about 75 Pas (75,000 cP). Other preferred wrapping materials include gelatin having a bloom number in the range of 30 to 200, preferably 75 to 200.

The Thickness of the wrapping material determines the dissolution rate of the wrapped one Detergent component and thus the release rate of the detergent ingredient to the wash water. The wrapped ones Detergent components are then delivered to the compressed part or are preferably in a matrix of liquid or preferably Gel, which is brought to the compressed part, suspended. The non-compressed part is processed by the methods described above attached to the compressed part.

One another example of a means by which the solution of the non-compressed part is premixing of detergent ingredients in a matrix that settles in water slowly solve or in it only partially soluble is. A particularly preferred matrix is a gel or viscous liquid as described above. The gel matrix preferably comprises organic or inorganic polymers. Preferred polymers include polyethylene glycol having a molecular weight of from 1,000 to 20,000, more preferably from 4,000 to 10,000 or even 12,000.

Yet another example of a means by which the solution of the non-compressed part can be delayed a non-compressed part as described above, the subsequent bringing of the uncompressed part to the compressed part and the coating of the non-compressed part with a coating layer as described above.

In in yet another example, the non-compressed part is so that it includes at least one ingredient that is based on an external stimulus reacts, for example the temperature or the pH, to dissolution initiate. An example for a component that reacts to a change in temperature a resolution would initiate is wax. It is considered in particular that a suitable Wax over a melting temperature Room temperature, preferably over 40 ° C, on most preferably over 50 ° C has.

SOTAX dissolution test method: The SOTAX device consists of a temperature controlled water bath with lid. in the Water bath are 7 pots. Hang from the bottom of the lid 7 electric stirring rods in positions those of the pots in a water bath. The lid of the water bath is also used as a cover for the pots.

The SOTAX water bath is filled with water and the temperature measuring device is set to 50 ° C. Everyone Pot is then filled with 1 liter of deionized water, and the stirrer is set to rotate at 26 rad / s (250 rpm). The lid of the water bath is closed, causing the temperature of the deionized water in the pots 1 hour with the water in a water bath.

It are equal weights of compressed and uncompressed Parts balanced. The compressed part becomes a first pot given, and the non-compressed part is in a second pot given. Then the lid is closed. The compressed and the non-compressed part is visually observed until it becomes Completely solved to have. You write down when the compressed part and the uncompressed part completely disbanded to have. The dissolution rate the compressed part or the non-compressed part calculated as the average weight (g) of each part which is expressed in dissolves deionized water per minute.

finishing additive

Of the Uncompressed part of the present invention comprises a Finishing additive. The term finishing additive means an addition that in the later Stages of the wash cycle or in the rinse cycle of the laundry washing or dishwasher is delivered.

Finishing additives that suitable for use herein are selected from the group consisting from organic polymeric compound, enzymes, perfume component, Oxygen-releasing bleach, precursor or catalyst, bleach destructive Agent, cobuilder, crystallization retarder, surfactant, cationic Fabric softener and a rinse aid.

bleach

suitable Bleaching agents for inclusion in the compressed part close both Oxygen-releasing as well as chlorine bleach. Bleach, which are suitable for use as a finishing additive are Oxygen-releasing bleach.

The Oxygen-releasing bleach contains a source of hydrogen peroxide and an organic peroxyacid bleach precursor compound. The preparation of the organic peroxyacid proceeds via an in situ reaction of the precursor with a hydrogen peroxide source. Preferred hydrogen peroxide sources include inorganic ones Perhydrate bleach. In an alternative preferred aspect For example, a pre-formed organic peroxyacid is added directly to the composition added. Also conceivable are compositions which are a mixture from a hydrogen peroxide source and an organic peroxyacid precursor in Combination with a pre-formed organic peroxyacid contained.

inorganic perhydrate

The Oxygen-releasing bleaching agent is preferably a hydrogen peroxide source. Suitable hydrogen peroxide sources include the inorganic perhydrate salts one.

The inorganic perhydrate salts are usually in the form of the sodium salt at a level of from 1% to 40% by weight, more preferably from 2% to 30% and most preferably 5% by weight to 25% by weight of the compositions.

Examples inorganic perhydrate salts include perborate, percarbonate, Perphosphate, persulfate and persilicate salts. In the inorganic Perhydrate salts are usually the alkali metal salts. The inorganic perhydrate salt can be used as a crystalline solid without additional Be included protection. For certain perhydrate salts will be in the preferred embodiments such granular However, compositions a coated form of the material used, which better storage stability of the perhydrate salt in the granular Product offers.

Sodium perborate may be in the form of the monohydrate of nominal formula NaBO ₂ H ₂ O ₂ or Te trahydrate NaBO ₂ H ₂ O ₂ .3H ₂ O are present.

Alkali metal, especially sodium percarbonate, are preferred perhydrate for ingestion in compositions of the invention.

Peroxyacid bleach precursor

worin L eine Abgangsgruppe ist und X im Wesentlichen jede solche Funktionalität annimmt, dass die durch Perhydrolyse hergestellte Peroxysäure folgende Struktur besitzt:

Peroxyacid bleach precursors are compounds that react with hydrogen peroxide in a perhydrolysis reaction to yield a peroxyacid. Peroxyacid bleach precursors can generally be represented as

wherein L is a leaving group and X assumes substantially any such functionality that the peroxyacid produced by perhydrolysis has the structure:

The Peroxyacid bleach precursor compounds are preferably in a concentration of 0.5% by weight to 20% by weight, more preferably from 1% to 10% by weight, most preferably from 1.5% to 5% by weight of the compositions.

suitable Peroxyacid bleach precursor compounds typically contain one or more N- or O-acyl groups, the precursors selected from many classes could be. Suitable classes include anhydrides, esters, imides, lactams and acylated derivatives of imidazoles and oximes. Examples of suitable Materials in these classes are disclosed in GB-A-1586789. suitable Esters are disclosed in GB-A-836988, 864798, 1147871, 2143231 and EP-A-0170386.

Metal-containing bleach catalyst

If the compressed part or the non-compressed part of the present Invention containing an oxygen-releasing bleach is a preferred additional Component of a metal-containing bleach catalyst. Preferably the metal-containing bleach catalyst contains a bleach catalyst containing a transition metal more preferably a manganese or cobalt-containing bleach catalyst.

One suitable type of bleach catalyst is a catalyst containing a Heavy metal cation with a defined catalytic bleaching activity, such as copper, iron cations, a supportive one Metal cation with little or no catalytic bleaching activity, such as zinc or aluminum cations, and a sequestering agent with defined stability constants with respect to the catalytic and supporting metal cations, in particular ethylenediaminetetraacetic acid, Ethylenediaminetetra (methylenephosphonic acid) and water-soluble salts thereof, includes. Such catalysts are disclosed in U.S. Patent 4,430,243.

The most preferred cobalt catalysts useful herein are cobalt pentaamine acetate salts having the formula [Co (NH ₃ ) ₅ OAc] T _y , wherein OAc represents an acetate moiety, and more particularly cobalt pentaamine acetate chloride, [Co (NH ₃ ) ₅ OAc] Cl ₂ ; and [Co (NH ₃ ) ₅ OAc] (OAc) ₂ ; [Co (NH ₃ ) ₅ OAc] (PF ₆ ) ₂ ; [Co (NH ₃ ) ₅ OAc] (SO ₄ ), [Co (NH ₃ ) ₅ OAc] (BF ₄ ) ₂ , and [Co (NH ₃ ) ₅ OAc] (NO ₃ ) ₂ (herein "PAC") ,

These Catalysts can also be processed along with auxiliary materials to control the color to reduce, if necessary for the appearance of the product desired is or they can be included in enzyme-containing particles, as described below explained by examples, or the compositions can be prepared so that they have "speckles".

enzymes

Suitable enzymes for inclusion as a finishing additive in the compressed part or the non-compressed part are selected from the group consisting of cellulases, hemicellulases, peroxidases, proteases, glucoamylases, amylases, xylanases, lipases, phospholipases, esterases, cutinases, pectinases, keratanases, reductases, Oxidases, phenoloxidases, lipoxygenases, ligninases, pullulanas sen, tannases, pentosanases, malanases, β-glucanases, arabinosidases, hyaluronidase, chondroitinase, laccase or mixtures thereof.

preferred Enzymes include protease, amylase, lipase, peroxidases, cutinase and / or cellulase in association with one or more plant cell wall degrading enzymes.

cellulases and / or oxidases are normally added to the detergent composition in amounts of from 0.0001% to 2% by weight of active enzyme on the weight of the composition, added.

The Lipases and / or cutinases are in the detergent composition normally in concentrations from 0.0001% to 2% by weight active enzyme, based on the weight of the detergent composition, contain.

The proteolytic enzymes are in the detergent compositions of the invention at a level of from 0.0001% to 2% by weight, preferably from 0.001 wt% to 0.2 wt%, more preferably from 0.005 wt% to 0.1% by weight of pure enzyme, based on the weight of the composition, contain.

preferred Close amylase enzymes those described in WO95 / 26397.

The Amylolytic enzymes are in the detergent compositions of the invention in an amount of 0.0001 wt .-% to 2 wt .-%, preferably from 0.00018 wt% to 0.06 wt%, more preferably 0.00024 wt% to 0.048% by weight of pure enzyme, based on the weight of the composition.

In a particularly preferred embodiment Detergent tablets of the present invention include amylase enzymes, in particular those described in WO95 / 26397, in Combination with a complementary Amylase.

Other suitable detergent ingredients that may be added are Enzyme oxidation scavengers. Examples of such enzyme oxidation scavengers are ethoxylated tetraethylene polyamines.

A number of enzyme materials and agents for their incorporation into synthetic detergent compositions are also described in WO 9307263 A and WO 9307260 A to Genencor International, in WO 8908694 A to Novo, and in US 3,553,139, 5 , January 1971 to McCarty et al. Enzymes are also in US 4,101,457 , Place et al., July 18, 1978, and in US 4,507,219 , Hughes, March 26, 1985. For liquid detergent compositions are useful enzyme materials and their incorporation into such preparations in US 4,261,868 , Hora et al., Apr. 14, 1981. Enzymes for use in detergents can be stabilized by various techniques. Enzyme stabilization techniques are in US 3,600,319, 17 , August 1971, Gedge et al., In EP 199,405 and EP 200,586, 29 , October 1986, Venegas, discloses and explains. For example, enzyme stabilization systems are also available in US 3,519,570 described. A useful Bacillus, sp. AC 13, which provides proteases, xylanases and cellulases, is described in WO 9401532 A to Novo.

bleach destructive medium

One Bleach destroying Agent is a preferred finishing additive of the uncompressed Part of detergent tablets suitable for use in automatic dishwashers are suitable. Bleach destroying agents become the later stages the washing cycle of a dishwasher added and serve to bleach any, which at the end of the Wash cycle still left is to destroy. It is believed that bleach coming from the wash cycle in the Transfer rinse cycle corrosion of silver is effected as described in EP-A-636 888.

The Bleaching destroying Means consists of one or more encapsulated additives. suitable encapsulated additives shut down encapsulated enzymes necessary for the destruction of oxygen, for example peroxidases, e.g. B. Catalase, encapsulated reductant, e.g. B. thiosulfate, encapsulated Heavy metals or compounds thereof, e.g. As copper, iron, manganese, Zinc or titanium.

suitable Methods for encapsulation are already known in the art. The dissolves preferred encapsulation gradually on, z. Paraffin.

Perfume ingredient

Perfume ingredients can be included in the compressed part, but are preferably as finishing additives of the non-compressed part. Be under perfume ingredient Perfume oil, encapsulated Perfumes, fragrances applied to a porous carrier and then optionally encapsulated, perfume precursors and mixtures thereof. Close suitable fragrances those generally known in the art.

Organic polymer compound

organic polymeric compounds can are included in the compressed part, but are preferred finishing additives of the non-compressed part according to the invention. With organic polymer compound is essentially any polymeric organic compound commonly used in detergent compositions is found and the dispersing, restocking inhibiting, dirt-dissolving or has other cleaning properties.

The organic polymer compound is in the detergent compositions of the invention usually in an amount of 0.1% by weight to 30% by weight, preferably from 0.5% to 15%, most preferably 1% by weight to 10% by weight of the compositions.

Examples Organic polymer compounds include the water-soluble ones organic homo- or copolymeric polycarboxylic acids, modified polycarboxylates or their salts in which the polycarboxylic acid has at least two carboxyl radicals includes, from each other by not more than two carbon atoms are separated.

preferred commercially available acrylic acid-containing Polymers with a molecular weight below 15,000 include those listed below the trade name Sokalan PA30, PA20, PA15, PA10 and Sokalan CP10 sold by BASF GmbH and under the trade name Acusol 45N, 480N, 460N sold by Rohm and Haas.

builders

builders can be included in the compressed part, but are preferably added as a finishing additive of the non-compressed part. By Cobuilder one understands a connection, in addition to a builder component (as described below) acts to Mask heavy metal ions (to chelate). These ingredients can also have calcium and magnesium chelate forming properties, but preferably show selectivity to the binding of heavy metal ions, such as Iron, manganese and copper.

builders are generally in a proportion of 0.005 wt .-% to 20 wt .-%, preferably of 0.1 Wt .-% to 10 wt .-%, stronger preferably from 0.25% to 7.5% by weight and most preferably from From 0.5% to 5% by weight of the compositions.

builders, which are of an acidic nature and which, for example, phosphonic acid or Have carboxylic acid functionalities, can either in acid form or as a complex / salt with a suitable counterion such as an alkali metal or alkali metal ion, ammonium or a substituted ammonium ion or any mixture thereof. Preferably each salt / complex is water soluble. The molar ratio of Countercations to the co-builder is preferably at least 1: 1.

suitable Cobuilder to the relevant Close use organic phosphonates, such as the aminoalkylenepoly (alkylenephosphonates), Alkali metal ethane 1-hydroxy and nitrilotrimethylene phosphonates. Preferred among the above mentioned types are diethylenetriamine penta (methylenephosphonate), Ethylenediaminetri (methylenephosphonate), hexamethylenediamine tetra (methylenephosphonate) and hydroxyethylene-1,1-diphosphonate.

Other suitable co-builders for use herein include nitriloacetic acid and polyaminocarboxylic acids, such as ethylenediaminetetraacetic acid, ethylenetriaminepentaacetic acid, ethylenediamine succinic acid, ethylenediaminedioglutaric acid, 2-hydroxypropylenediamine disuccinic acid, or any salts thereof. Particularly preferred are ethylenediamine-N, N'-disuccinic acid (EDDS) or the alkali metal, alkaline earth metal, ammonium or substituted ammonium salts thereof or mixtures thereof. preferred EDDS compounds are the free acid form and the sodium or magnesium salts or complexes thereof.

cationic fabric softener

cationic Fabric softeners are suitable finishing additives in detergent tablets, the for the Use in laundry washing are suitable. The cationic softeners may undergo washing at later stages be added to the wash cycle, but are preferably in the rinse cycle of the washing process. Suitable cationic fabric softeners include the water-insoluble ones tertiary Amine or amide materials with two long chains as in GB-A-1 514,276 and EP-B-0 011 340.

cationic Fabric softeners usually become in total proportions of from about 0.5% to about 15% by weight, normally from about 1% to about 5% by weight.

Crystal growth

Of the contains uncompressed part preferably a crystallization retarder, preferably an organodiphosphonic acid constituent, preferably in a proportion of 0.01% by weight to 5% by weight, more preferably from 0.1% by weight to 2 wt .-% of the compositions is received.

Under organo is understood herein to mean an organo diphosphonic acid which does not have any Contains nitrogen as part of its chemical structure. These Definition closes Therefore, the organoaminophosphonates, which, however, in compositions of the invention be included as heavy metal ion sequestering ingredients can.

The organodiphosphonic acid is preferably a C ₁ to C ₄ diphosphonic acid, more preferably a C ₂ diphosphonic acid such as ethylenediphosphonic acid, or most preferably ethane 1-hydroxy-1,1-diphosphonic acid (HEDP), and may be partially or completely ionized form, especially as a salt or complex.

nonionic surfactant

in the Essentially all nonionic surfactants can be in either the compressed or the non-compressed portion of the detergent tablet become. Preferred non-limiting classes of suitable nonionic Surfactants are listed below. Preferred nonionic surfactants, which are included in the compressed part, provide an improved suds suppression ready. In a preferred aspect of the present invention the finishing additive is a rinse aid composition (later described), the nonionic surfactant and a source of acidity includes.

nonionic Surfactant from ethoxylated alcohol

The Alkylethoxylate condensation products of aliphatic alcohols with From 1 to 25 moles of ethylene oxide are suitable for use herein. The alkyl chain of the aliphatic alcohol can be either straight or branched, primary or secondarily be and contain usually 6 to 22 carbon atoms. Particularly preferred are the Condensation products of alcohols with an alkyl group containing 8 contains up to 20 carbon atoms, with 2 to 10 moles of ethylene oxide per mole of alcohol.

Surfactant from end-capped alkylalkoxylate

A suitable surfactant of endcapped alkyl alkoxylate are the epoxy-capped poly (oxyalkylated) alcohols represented by the formula: R ₁ O [CH ₂ CH (CH ₃ ) O] _x [CH ₂ CH ₂ O] _y [CH ₂ CH (OH) R ₂ ] (I) wherein R _{1 is} a linear or branched aliphatic hydrocarbon radical having 4 to 18 carbon atoms; R _{2 is} a linear or branched aliphatic hydrocarbon radical having 2 to 26 carbon atoms; x is an integer having an average of 0.5 to 1.5, more preferably 1; and y is an integer having a value of at least 15, more preferably at least 20.

Preferably, the surfactant of formula I has at least 10 carbon atoms in the terminal Epo xideinheit [CH ₂ CH (OH) R ₂ ]. Suitable surfactants of formula I of the invention are 18B SLF of the described nonionic surfactants POLY-TERGENT ^® Olin Corporation, such as in WO 94/22800, published October 13, 1994 by Olin Corporation.

Ether-capped poly (oxyalkylated) alcohols

Preferred surfactants for use herein include ether-capped poly (oxyalkylated) alcohols having the formula: R ¹ O [CH ₂ CH (R ³ ) O] _x [CH ₂ ] _k CH (OH) [CH ₂ ] _j OR ² wherein R ¹ and R ^{2 are} linear or branched, saturated or unsaturated, aliphatic or aromatic hydrocarbon radicals having 1 to 30 carbon atoms; R ^{3 is} H or a linear aliphatic hydrocarbon radical having 1 to 4 carbon atoms; x is an integer having an average of 1 to 30, and when x is 2 or greater, R ^{3 may be the} same or different, and k and j are integers having an average of 1 to 12, and more preferably 1 to 5 ,

R ¹ and R ² are preferably linear or branched, saturated or unsaturated aliphatic or aromatic hydrocarbon radicals having 6 to 22 carbon atoms, with 8 to 18 carbon atoms being most preferred. H or a linear aliphatic hydrocarbon radical having 1 to 2 carbon atoms are most preferred for R ³ . Preferably, x is an integer having an average of 1 to 20, more preferably 6 to 15.

As described above, in the preferred embodiments, R ^{3 may be the} same or different when x is greater than two. That is, R ³ may vary between any of the alkyleneoxy units as described above. Thus, R ³ may be, for example, selected to form Ethlyenoxy (EO) or propyleneoxy (PO), when x is 3, and may be in the order of (EO) (PO) (EO), (EO) (EO) (PO ); (EO) (EO) (EO); (PO) (EO) (PO); (PO) (PO) (EO) and (PO) (PO) (PO) vary. Of course, the integer number three is chosen here only as an example, and the variation may be much larger and x may take on a much higher integer value, and may include, for example, numerous (EO) units and a much smaller number of (PO) units be.

Especially preferred surfactants as described above include with a low cloud point from below 20 ° C one. These low cloud point surfactants can then be used in conjunction with a high cloud point surfactant, as below for superior Grease cleaning benefits is described.

The most preferred ether-capped poly (oxyalkylated) alcohol surfactants are those wherein k is 1 and j is 1 such that the surfactants have the formula: R ¹ O [CH ₂ CH (R ³ ) O] _x CH ₂ CH (OH) CH ₂ OR ² wherein R ¹ , R ² and R ^{3 are} as defined above and x is an integer having an average of 1 to 30, preferably 1 to 20 and more preferably 6 to 18. Most preferred are surfactants wherein R ¹ and R ^{2 are} in the range of 9 to 14, R ^{3 is} H to form ethyleneoxy, and x is in the range of 6 to 15.

The ether-capped, poly (oxyalkylated) alcohol surfactants include three general components, namely a linear or branched alcohol, an alkylene oxide and a Alkyl ether end cap. The alkyl ether end cap and the alcohol are used as hydrophobic, oil-soluble Section of the molecule, while the alkylene oxide group forms the hydrophilic, water-soluble portion of the molecule.

These Surfactants have significant compared to conventional surfactants Improvements to their stain removal and filming properties and in the removal of grease spills, when in Compound with high cloud point surfactants.

In general terms, the ether-capped poly (oxyalkylated) alcohol surfactants of this invention can be prepared by reacting an aliphatic alcohol with an epoxide to form an ether, which is then reacted with a base to form a second epoxide. The second epoxide is then reacted with an alkoxylated alcohol to form the novel compounds of the present invention the. Examples of processes for preparing the ether-capped, poly (oxyalkylated) alcohol surfactants are described below:

Preparation of C _12/14 alkyl glycidyl ether

A C _12/14 fatty alcohol (100.00 g, 0.515 mol) and stannic chloride (0.58 g, 2.23 mmol, available from Aldrich) are dissolved in a 500 ml three-necked round bottomed flask equipped with a condenser, an argon inlet, an addition funnel, a magnetic stirrer and an internal temperature probe combined. The mixture is heated to 60 ° C. Epichlorohydrin (47.70 g, 0.515 mol, available from Aldrich) is added dropwise to keep the temperature between 60-65 ° C. After stirring at 60 ° C for an additional hour, the mixture is cooled to room temperature. The mixture is treated with a 50% solution of sodium hydroxide (61.80 g, 0.773 mol, 50%) while being mechanically stirred. After the addition is complete, the mixture is heated to 90 ° C for 1.5 h, cooled and filtered with ethanol. The filtrate is separated and the organic phase is washed with water (100 ml), dried over MgSO ₄ , filtered and concentrated. Distillation of the oil at 100-120 ° C (13.3 Pa (0.1 mm Hg)) provides the glycidyl ether as an oil.

Preparation of C _12/14 alkyl C _9/11 ether capped alcohol surfactant

Neodol ^® 91-8 (20.60 g, 0.0393 mol ethoxylated alcohol available from Shell Chemical Co.) and tin (IV) chloride (0.58 g, 2.23 mmol) in a 250 ml Three-necked round bottom flask equipped with condenser, argon inlet, addition funnel, magnetic stirrer and internal temperature probe. The mixture is heated to 60 ° C, at which point C _12/14 alkyl glycidyl ether (11.00 g, 0.0393 mol) is added dropwise over 15 min. After being stirred at 60 ° C for 18 hours, the mixture is cooled to room temperature and dissolved in an equal portion of dichloromethane. The solution is passed through a 2.54 cm (1 inch) pad of silica gel while eluting with dichloromethane. The filtrate is concentrated by rotary evaporation and then stripped in a Kugelrohr oven (100 ° C, 66.7 Pa (0.5 mm Hg)) to give the surfactant as an oil.

Nonionic surfactant ethoxylated / propoxylated fatty alcohol

The ethoxylated C ₆ -C ₁₈ fatty alcohols and the mixed ethoxylated / propoxylated C ₆ -C ₁₈ fatty alcohols are suitable surfactants for use herein, especially if they are water-soluble. Preferably, the ethoxylated fatty alcohols are the ethoxylated C ₁₀ -C ₁₈ fatty alcohols having a degree of ethoxylation of 3 to 50, most preferably the ethoxylated C ₁₂ -C ₁₈ fatty alcohols having a degree of ethoxylation of 3 to 40. Preferably, the mixed ethoxylated / propoxylated fatty alcohols have an alkyl chain length of 10 to 18 carbon atoms, a degree of ethoxylation of 3 to 30 and a degree of propoxylation of 1 to 10.

Nonionic EO / PO condensates with propylene glycol

The condensation products of ethylene oxide with a hydrophobic base formed by condensation of propylene oxide with propylene glycol are suitable for use herein. The hydrophobic portion of these compounds preferably has a molecular weight of 1500 to 1800 and is water insoluble. Examples of compounds of this type include certain commercially available Pluronic ^™ surfactants, marketed by BASF.

Nonionic EO condensation products with propylene oxide / ethylenediamine adducts

The condensation products of ethylene oxide with the product of the reaction of propylene oxide and ethylenediamine are suitable for use herein. The hydrophobic portion of these products consists of the reaction product of ethylenediamine and excess propylene oxide and generally has a molecular weight of 2500 to 3000. Examples of this type of nonionic surfactant include certain of the commercially available Tetronic ^™ compounds marketed by BASF.

mixed nonionic surfactant system

In a preferred embodiment of the present invention, the detergent tablet comprises a mixed nonionic surfactant system comprising at least one low cloud point nonionic surfactant and at least one high cloud point nonionic surfactant as described in WO-A-98/11187 wrote.

In a preferred embodiment includes the detergent tablet containing such a mixed surfactant system also includes an amount of water-soluble salt around the deionized Water conductive to be measured at 25 ° C over 3 millisiemens / cm, preferably over 4 millisiemens / cm, strongest preferably over 4.5 millisiemens / cm.

In another preferred embodiment, the mixed surfactant system dissolves in water having a hardness of 1.246 mmol / L in any suitable cold feed automatic dishwashing machine to produce a solution having a surface tension of less than 0.4 Pa (4 dynes / cm ² ) at below 45 ° C, preferably at below 40 ° C, most preferably below 35 ° C, as described in WO-A-98/11187.

In another preferred embodiment become the surfactants of the high cloud point mixed surfactant system and with a low cloud point separated so that either the surfactants with the high cloud point or those with the low cloud point in a first Matrix present and the other in a second matrix as described in WO-A-98/11187. For the purposes of the present The invention may be a first particle in the first matrix and may be at the second matrix to a second particle act. A surfactant may be prepared by any known method be applied to a particle, preferably the surfactant sprayed on the particle. In a preferred aspect, the first matrix is the compressed one Part and the second matrix of the non-compressed part of the detergent tablet of the present invention. Preferably, the surfactant is with the low cloud point in the compressed part, and the surfactant with the high cloud point resides in the non-compressed portion of the detergent tablet of the present invention Invention.

rinse aid

In A preferred aspect of the present invention comprises non-compressed part of a rinse aid. Under rinse aid One understands a composition in the rinse cycle of the dishwasher is discharged, so that the water runs better and the stain and film formation is reduced to the dishes.

The Rinse aid composition for this purpose Use may include any of the ingredients as ingredients of rinse aid compositions are found, for example nonionic surfactants (described above), hydrotropic compounds, solvents and an acidity source.

suitable close hydrotropic compounds Sodium, potassium and ammonium xylene sulphonates, toluenesulphonates, cumenesulfonates and mixtures thereof. A hydrotropic compound is usually in a proportion of 0.5 wt .-% to 20 wt .-%, preferably 1% to 10% by weight of the rinse aid composition available.

The rinse aid composition may contain one or more solvents in proportions of from 1% to 30%, preferably from 3% to 25%, more preferably from 5% to 20%, by weight. the rinse aid composition, especially if they are in liquid form or in gel form. Suitable solvents for use herein include the organic solvents of the general formula RO (CH ₂ C (Me) HO) _n H wherein R is an alkyl, alkenyl or alkylaryl group of 1 to 8 carbon atoms and n is an integer of 1 to 4 is. Preferably, R is an alkyl group containing from 1 to 4 carbon atoms, and n is 1 or 2. Particularly preferred R groups are n-butyl or isobutyl. Preferred solvents of this type are 1-n-butoxypropan-2-ol (n = 1); and 1- (2-n-butoxy-1-methylethoxy) propan-2-ol (n = 2) and mixtures thereof.

Other Solvent, which are suitable herein include the water-soluble ones CARBITOL solvent or the water-soluble ones CELLOSOLVE solvent medium one. water-soluble CARBITOL solvents are Compounds of the 2- (2-alkoxyethoxy) ethanol class, wherein the alkoxy group is derived from ethyl, propyl or butyl is; a preferred water-soluble Carbitol is (2- (2-butoxyethoxy) ethanol, also known as butyl carbitol. water-soluble Cellosolve solvent are compounds of the 2-alkoxyethoxyethanol class, with 2-butoxyethoxyethanol is preferred.

Other suitable solvents are benzyl alcohol and diols such as 2-ethyl-1,3-hexanediol and 2,2,4-trimethyl-1,3-pentanediol.

The low molecular weight, water-soluble, liquid Polyethylene glycols are also suitable solvents for this purpose Use.

The alkane mono- and diols, especially the C ₁ -C ₆ alkane mono- and diols, are suitable for use herein. Monovalent C ₁ -C ₄ -alcohols (for example: ethanol, propanol, isopropanol, butanol and mixtures thereof) are preferred, with ethanol being particularly preferred. The divalent C1-C4 alcohols, including propylene glycol, are also preferred.

Of the pH of the rinse aid composition is preferably below 7. The pH is determined by taking up an acidity source, for example, of inorganic or organic acids, adjusted, for example, carboxylate acids (eg, citric acid or succinic acid), polycarboxylate (eg polyacrylic acid), Acetic acid, boric acid, malonic, adipic acid, fumaric acid, Lactic acid, glycolic acid, Tartaric acid, tartronic, maleic acid, Include derivatives and mixtures thereof. A preferred source of acidity is citric acid

The rinse aid composition may also comprise other ingredients such as builders, cobuilders, and other polymeric compounds (described above), especially polyethylene glycol (PEG), polyvinylpyrrolidone, polyacrylate (especially those described in U.S. Patent Nos. 4,648,866) US 5,240,632 described), polymethacrylate and copolymers thereof, acrylonitrile.

method

As Described above are the detergent tablets described herein by separately preparing the composition of the finishing additives and / or Detergent compositions, each containing the compressed part and the non-compressed part, and then attached or fixing the composition of the non-compressed part made on the compressed part.

The compressed part comprises at least one, but preferably more than one detergent component. The compressed portion is prepared by premixing at least one detergent component, but preferably a mixture of detergent ingredients and / or optional carrier ingredients to form a composition. Premixing is carried out in a suitable mixer, for example a tray mixer, a rotary drum, a vertical mixer or a high shear mixer. Preferably, particulate ingredients are mixed together in a mixer as described above, and liquid ingredients are applied to the dry particulate ingredients, for example, by directly spraying the liquid ingredients onto the dry particulate ingredients. The resulting composition is then formed into a compressed part in a compression step with any known suitable device. Preferably, the composition is formed into a compressed part by means of a tablet press wherein the tablet is made by compressing the composition between upper and lower punches. In a preferred embodiment of the present invention, the composition is placed in a die cavity of a tablet press and compressed to a pressure of preferably greater than 6.3 KN / cm ² , more preferably greater than 9 KN / cm ² , most preferably greater than 14.4 KN / cm ² to form a compressed part.

Around to form a preferred tablet of the invention, wherein the compressed Part of a trough that receives the non-compressed part, is the compressed part using a modified Tablet press, the modified upper and / or lower punches includes, manufactured. The upper and lower punches of the modified Tablet presses are modified so that the compressed part having one or more recesses forming a trough or troughs into which the non-compressed part is placed.

The non-compressed part comprises a finishing additive, but may optionally also contain one or more detergent ingredients. The components of the non-compressed part are premixed with any suitable known mixing device. In addition, the non-compressed portion may optionally comprise a carrier to which the finishing additive and the optional detergent compositions are combined. The non-compressed part can be made in solid or flowable form. Once made, the composition is brought to the compressed part. The non-compressed part can be brought to the compressed part by manual delivery or by means of a metering nozzle or an extruder. When the compressed part comprises a well, the non-compressed part is preferably made using an accurate dispensing device such as a metering nozzle such as a differential scale metering screw available from Optima, Germany, or an extruder into which Trough introduced.

If the flowable, uncompressed Particle form, the method comprises bringing a flowable, non-compressed Part to the compressed part in a dispensing step and then coating at least part of the non-compressed part with a coating layer, so that the coating layer causes the non-compressed section to substantially attached to the compressed section.

If the flowable, uncompressed Part by hardening at the compressed part, the method comprises a dispensing step in which the flowable, uncompressed part is brought to the compressed part, and a subsequent conditioning step, wherein the non-compressed part cures. Such a conditioning step can dry, cool, Binding, polymerization, etc. of the non-compressed part, while of which the non-compressed part is firm, semi-solid or high-viscous becomes. warmth can be used in a drying step. Heat or Irradiation can be applied to polymerization in a polymerization step to effect.

It is also considered that the compressed part with several Troughs can be made. The several wells will then filled with a non-compressed part. It is also considered that each trough will be filled with another non-compressed part can, or alternatively, each trough with several different filled with uncompressed parts become.

Detergent Compositions

Of the compressed part of the detergent tablets described herein by compressing a composition of at least one detergent composition, but preferably a mixture of detergent compositions produced. A suitable premixed composition may be a Range of different cleaning active ingredients, including builder components, Surfactants, enzymes, bleaches (both oxygen-releasing and chlorine-containing), alkalinity sources, colorants, fragrance, Lime soap dispersants, organic polymeric compounds, including polymers Dye transfer inhibitors, crystal growth, Co-builders, metal ion salts, enzyme stabilizers, anti-corrosion agents, Suds suppressors, solvents Fabric softeners, optical brighteners and hydrotropes.

strongly preferred detergent ingredients of the compressed part include one Builder compound, a surfactant, enzyme and bleach.

builder compound

The Detergent tablets of the present invention preferably contain a builder compound, which is usually present in a proportion of 1% by weight to 80 wt.%, preferably from 10 wt.% to 70 wt.%, most preferably from 20% to 60% by weight of the composition of active detergent ingredients is.

Water-soluble builder compound

suitable water-soluble Builders include the water-soluble ones monomeric polycarboxylates or their acid forms, homopolymers or copolymers polycarboxylic or salts thereof, wherein the polycarboxylic acid contains at least two carboxyl radicals, which are separated by not more than two carbon atoms include, carbonates, bicarbonates, borates, phosphates and Mixtures of the foregoing.

Of the Carboxylate or polycarboxylate builder can be derived from monomeric or to be eligomeric.

Partially soluble or insoluble builder compound

The detergent tablets of the present invention may contain a partially soluble or insoluble builder compound. Partially soluble and insoluble builder compounds are particularly suitable for use in tablets made for use in laundering processes. Examples of partially water-soluble builders include the crystalline layered silicates as disclosed in EP-A-0164514, DE-A-3417649 and DE-A-3742043. The crystalline sodium layer silicates of the general formula are preferred NaMSi _x O _{2 + 1} · yH ₂ O wherein M is sodium or hydrogen, x is a number from 1.9 to 4 and y is a number from 0 to 20. Crystalline layered sodium silicates of this type preferably have a two-dimensional "surface" structure, such as a so-called δ-layer structure, as in FIG EP 0 164514 and EP 0 293640 described.

The most preferred crystalline layered sodium silicate compound has the formula α-Na ₂ Si ₂ O ₅ , known as NaSKS-6 (tradename), available from Hoechst AG.

surfactant

surfactants are preferred detergent-active ingredients of those described herein Compositions. Suitable surfactants are anionic, cationic, nonionic, ampholytic and zwitterionic surfactants and Mixtures thereof selected. Products for dishwashers should be low-foaming Be kind, so the foaming must of the surfactant system for use in dishwashing processes or more preferably low foaming, usually be nonionic type. One through surfactant systems used in laundry cleaning methods foaming does not have to be used in the same way Dimensions are suppressed, like this for Dishwashing required is. The surfactant is typically present in a proportion of 0.2% by weight. up to 30% by weight, more preferably from 0.5% to 10% by weight, most preferably from 1% to 5% by weight of the composition of active detergent ingredients.

A Typical list of anionic, nonionic, ampholytic and zwitterionic Classes and types of these surfactants are described in U.S. Patent 3,929,678, issued to Laughlin and Heuring on December 30, 1975. A List of suitable cationic surfactants is disclosed in U.S. Patent 4,259,217, issued to Murphy on March 31st 1981, indicated. A list of surfactants that are usually in detergent compositions for automatic dishwashers is contained in, for example, EP-A-0414 549 and the PCT applications No. WO 93/08876 and WO 93/08874.

water-soluble sulfate salt

The Detergent tablet contains optionally a water-soluble Sulfate salt. Optionally, the water-soluble sulfate salt is in one Amount of 0.1 wt% to 40 wt%, more preferably 1 wt% to 30% by weight, most preferably from 5% to 25% by weight of the Contain compositions.

The water-soluble Sulfate salt can be essentially any salt of sulfate be with any countercation. Preferred salts are made the sulfates of the alkali and alkaline earth metals, in particular Sodium sulfate.

alkali metal

According to one embodiment of the present invention, an alkali metal silicate is an essential ingredient of the detergent tablet. In other embodiments of the present invention, the presence of an alkali metal silicate is optional. A preferred alkali metal silicate is a sodium silicate having a ratio of SiO ₂ to Na ₂ O of from 1.8 to 3.0, preferably from 1.8 to 2.4, most preferably 2.0. Sodium silicate is preferably present in an amount of less than 20 weight percent, preferably from 1 weight percent to 15 weight percent, most preferably from 3 weight percent to 12 weight percent SiO ₂ . The alkali metal silicate may be in the form of the anhydrous salt or a hydrated salt.

alkali metal may also be included as part of an alkalinity system to be available.

The alkalinity system preferably also contains sodium metasilicate which is present in an amount of at least 0.4 weight percent SiO ₂ . Sodium metasilicate has a nominal SiO ₂ to Na ₂ O ratio of 1.0. The weight ratio of the sodium silicate to the sodium metasilicate, measured as SiO ₂ , is preferably 50: 1 to 5: 4, more preferably 15: 1 to 2: 1, most preferably 10: 1 to 5: 2.

colorants

The term "colorant" as used herein means any substance that absorbs light at specific wavelengths from the visible spectrum of light. Such colorants, when added to a detergent genszusammensetzung the effect that they change the visible color and thus the appearance of the detergent composition. Colorants may be, for example, either dyes or pigments. Preferably, the colorants are stable in the composition in which they are contained. Therefore, in a high pH composition, the colorant is preferably base stable, and in a low pH composition, the colorant is preferably acid resistant.

Of the compressed and / or the non-compressed part can be one Colorant, a mixture of colorants, colored particles or a mixture dyed Contain particles so that the compressed part and the uncompressed Part have a different appearance. Preferably comprises either the compressed part or the uncompressed part Colorant.

If the non-compressed part comprises two or more compositions contains active detergent ingredients, preferably comprises a the first and / or second subsequent compositions Colorant. If both the first and the second and / or the subsequent Compositions containing a colorant, have the colorants preferably a different appearance.

If present, comprises the coating layer preferably a colorant. When the compressed part and the coating layer a colorant, the colorants preferably provide one different visual effect ready.

Examples close suitable dyes reactive dyes, direct dyes, azo dyes. preferred Close dyes Phthalocyanine dyes, anthraquinone dyes, quinoline dyes, Monoazo, disazo and polyazo dyes one. More preferred dyes include anthraquinone, quinoline and monoazo dyes one. Preferred dyes include SANDOLAN E-HRL 180% (trade name), SANDOLAN MILLING BLUE (trade name), TURQUOISE ACID BLUE (Trade name) and SANDOLAN BRILLIANT GREEN (trade name), all available by Clariant, UK, HEXACOL QUINOLINE YELLOW (trade name) and HEXACOL BRILLIANT BLUE (trade name), both available from Pointings, UK, ULTRA MARINE BLUE (trade name), available from Holliday, or LEVAFIX TURQUISE BLUE EBA (trade name), available from Bayer, USA.

The Colorant can be compressed by any suitable method and / or uncompressed part. Suitable methods shut down mixing all or selected active detergent ingredients with a colorant in a drum or spraying all or selected active Detergent ingredients with the colorant in a rotary drum.

If Colorant is present as part of the compressed part, it is in an amount of 0.001% to 1.5%, preferably 0.01 % to 1.0%, the strongest preferably from 0.1% to 0.3% present. If it's part of it of the non-compressed part, is the colorant generally in an amount of 0.001% to 0.1%, more preferably from 0.005% to 0.05%, the strongest preferably from 0.007% to 0.02%. If it is part of the coating layer is present, colorant is in a proportion of 0.01% to 0.5 %, stronger preferably from 0.02% to 0.1%, most preferably from 0.03% to 0.06% present.

Corrosion inhibitor compound

The Detergent tablets of the present invention for use in dishwashing process are suitable Contain corrosion inhibitors, preferably selected from organic silver coating agents, especially paraffin, nitrogenous Corrosion inhibitor compounds and Mn (II) compounds, in particular Mn (II) salts of organic ligands.

Other anticorrosive compounds

Other suitable additional anticorrosive compounds include mercaptans and diols, especially mercaptans having from 4 to 20 carbon atoms, including laurylmercaptan, thiophenol, thionaphthol, thionalid and thioanthranol. Also suitable are saturated or unsaturated C ₁₀ -C ₂₀ fatty acids or their salts, in particular aluminum tristearate. The C ₁₂ -C ₂₀ hydroxy fatty acids or their salts are also suitable. Phosphonated octadecane and other antioxidants such as beta-hydroxytoluene (BHT) are also suitable.

Copolymers of butadiene and maleic acid, especially those listed under the trade reference No. 07787 supplied by Polyscience Inc. have proven to be of particular utility as corrosion inhibitor compounds.

Hydrocarbon oils

Another preferred active detergent ingredient for use in the present invention is a hydrocarbon oil, typically predominantly long chain, aliphatic hydrocarbons having a number of carbon atoms in the range of 20 to 50; preferably hydrocarbons are saturated and / or branched; preferably hydrocarbon oil selected from predominantly branched C _25-45 species having a ratio of cyclic to non-cyclic hydrocarbons of from 1:10 to 2: 1, preferably from 1: 5 to 1.1. A paraffin oil which meets the above characteristics and which has a ratio of cyclic to noncyclic hydrocarbons of 32:68 is marketed by Wintershall, Salzbergen, Germany under the trade name WINOG 70.

Water-soluble bismuth compound

The Detergent tablets of the present invention for use in dishwashing process are suitable a water-soluble Bismuth compound, preferably in a proportion of 0.005 Wt .-% to 20 wt .-%, stronger preferably from 0.01% to 5% by weight, most preferably from 0.1% by weight to 1% by weight of the compositions is present.

The water-soluble Bismuth compound can be essentially any bismuth salt or any Bismuth complex with essentially any inorganic or organic To be a counterion. Preferred inorganic bismuth salts are selected from the bismuth trihalides, bismuth nitrate and bismuth phosphate. bismuth acetate and citrate are preferred salts with an organic counter anion.

enzyme Stabilizing system

Here in preferred enzyme-containing compositions may range from 0.001% to 10% by weight, preferably from 0.005% to 8% by weight, most preferably from 0.01% to 6% by weight of an enzyme stabilizing system. The enzyme stabilization system can be any stabilization system which is compatible with the cleaning enzyme. Such stabilizing systems may include calcium ions, boric acid, propylene glycol, short-chain carboxylic acid, Boronic acid, Chlorine bleach scavengers and mixtures thereof. Such stabilizing systems can also reversible enzyme inhibitors, such as reversible protease inhibitors, include.

lime soap dispersant compound

The Compositions of active detergent ingredients may be one Kalkseifendispergiermittelverbindung, preferably in a Content of 0.1% by weight to 40% by weight, more preferably 1% by weight to 20% by weight, the strongest preferably from 2% to 10% by weight of the compositions, contain.

One Lime soap dispersant is a material which prevents the precipitation of Alkali metal, ammonium or amine salts of fatty acids Calcium or magnesium ions prevented. Preferred lime soap dispersant compounds are disclosed in PCT Application No. WO93 / 08877.

Suds suppressing system

The Detergent tablets of the present invention comprise, when they for the Use in machine wash compositions formulated, preferably a foam suppression system, in one Amount of 0.01% by weight to 15% by weight, preferably 0.05% by weight up to 10% by weight, most preferably from 0.1% by weight to 5% by weight the composition is present.

suitable Foam suppression systems for this purpose Can use essentially comprise all known foam-suppressing compounds, including for example, foam-suppressing Silicone compounds, foam-suppressing 2-alkyl and alkanol compounds. Preferred foam suppression systems and foam-suppressing Compounds are described in PCT Application No. WO93 / 08876 and EP-A-705 324 discloses.

Polymeric dye transfer inhibitor

The Detergent tablets herein can also from 0.01% by weight to 10% by weight, preferably 0.05% by weight to 0.5% by weight of polymeric dye transfer inhibiting agents contain.

The polymeric dye transfer inhibitor are preferably polyamine N-oxide polymers, copolymers of N-vinylpyrrolidone and N-vinylimidazole, polyvinylpyrrolidone polymers or combinations thereof.

Optical brightener

The Detergent tablets suitable for use in laundry processes, as herein optionally described, also contain 0.005% by weight. to 5% by weight of certain types of hydrophilic optical brightener.

wobei R₁ aus Anilin, N-2-Bishydroxyethyl und NH-2-Hydroxyethyl ausgewählt ist, R₂ aus N-2-Bishydroxyethyl, N-2-Hydroxyethyl-N-methylamin, Morphilin, Chlor und Amin ausgewählt ist und M ein salzbildendes Kation, wie Natrium oder Kalium, ist.Hydrophilic optical brighteners useful herein include those having the structural formula:

wherein R _{1 is selected} from aniline, N-2-bis-hydroxyethyl and NH-2-hydroxyethyl, R ₂ is selected from N-2-bis-hydroxyethyl, N-2-hydroxyethyl-N-methylamine, morpholine, chloro and amine, and M is a salt-forming Cation, such as sodium or potassium, is.

In the above formula, when R _{1 is} aniline, R _{2 is} N-2-bishydroxyethyl and M is a cation such as sodium, then the brightener is 4,4'-bis [(4-aniline-6- (N-2 -bis-hydroxyethyl -) - s -triazin-2-yl) amino] -2,2'-stilbenedisulfonic acid and disodium salt. This particular brightener type is marketed under the trade name Tinopal-UNPA-GX by the Ciba-Geigy Corporation. Tinopal-UNPA-GX is the preferred hydrophilic optical brightener useful in the detergent compositions herein.

In the above formula, when R _{1 is} aniline, R _{2 is} N-2-hydroxyethyl-N-2-methylamino and M is a cation such as sodium, then the brightener is 4,4'-bis - [(4-anilino -6- (N-2-hydroxyethyl-N-methylamino) -s-triazin-2-yl) amino] 2,2'-stilbenedisulfonic acid disodium salt. This particular brightener type is marketed under the trade name Tinopal 5BM-GX by the Ciba-Geigy Corporation.

In the above formula, when R _{1 is} aniline, R _{2 is} morphilin, and M is a cation such as sodium, then the brightener is 4,4'-bis - [(4-aniline-6-morphilino-s-triazine-2 yl) amino] 2,2'-stilbene disulfonic acid sodium salt. This particular type of brightener is marketed under the trade name Tinopal AMS-GX by Ciba Geigy Corporation.

Clay softening system

The for use in laundry cleaning procedures suitable detergent tablets can a clay softening system containing a clay mineral compound and optionally comprises a clay flocculating agent.

The Clay mineral compound is preferably a smectite clay compound. Smectite clays are disclosed in U.S. Patent Nos. 3,862,058, 3,948,790, U.S. Pat. 3,954,632 and 4,062,647. European Patent Nos. EP-A-299,575 and EP-A-313,146 in the name of Procter and Gamble Company describe suitable organic, polymeric clay flocculants.

Other optional ingredients

Other optional ingredients that are suitable for inclusion in the compositions of the invention include perfumes and filler salts, with sodium sulfate a preferred filling salt is.

pH of the compositions

The Detergent tablets of the present invention are preferably not formulated to have an excessively high pH, preferably such that it has a pH, measured as a 1% solution in distilled water, from 8.0 to 12.5, stronger preferably from 9.0 to 11.8, most preferably from 9.5 to 11.5 exhibit.

In In another aspect of the present invention are the compressed and uncompressed parts formulated to be different Deliver pHs. In the rinse aid application described above the compressed part is formulated to have an alkaline pH delivers while the non-compressed part is formulated to be acidic pH of below 7, preferably between 0.5 and 6.5, most preferably between 1.0 and 5.0.

Machine dishwashing

It All suitable methods for machine washing or cleaning Dirty dishes considered. A preferred machine dishwashing method includes the treatment of soiled objects consisting of dishes, glassware, Silver, metal objects, Cutlery and mixtures thereof are selected with an aqueous Liquid, in which an effective amount of a detergent tablet of the invention is dissolved or was dispersed. Under an effective amount of the detergent tablet 8 g to 60 g of product are understood in a washing solution with be dissolved or dispersed in a volume of 3 to 10 liters, what are the typical product dosages and wash solution volumes used in usual automatic dishwashing process be used. Preferably, the detergent tablets 15 weigh g up to 40 g, stronger preferably 20 g to 35 g.

Laundry process

The Machine laundry methods herein usually include the treatment of soiled solid laundry with an aqueous one wash solution in a washing machine comprising an effective amount of a laundry detergent-detergent tablet composition of the invention disbanded or dispersed. Under an effective amount of the detergent tablet composition 40 g to 300 g of product are understood in a wash liquor are dissolved or dispersed with a volume of 5 to 65 liters, as is typical product dosages and wash solution volumes are those commonly used in conventional machine laundry method be used.

In A preferred aspect of use is in the washing process a Dispensing device used. The dispenser is with the Detergent product filled and is used to direct the product before beginning the wash cycle into the drum of the washing machine. Your volume capacity should be like this be that they have adequate detergent product, as is usually the case with would be used in the washing process, may contain.

As soon as the washing machine with the laundry is loaded, the dispenser, which is the detergent product contains put into the drum. At the beginning of the washing cycle of the washing machine Water is added to the drum and the drum rotates certain intervals. The dispenser should be designed to handle the dry Detergent may contain, but then the release of this Product during the washing cycle due to reciprocation during the rotation the drum and also due to the contact with the wash liquor allows.

In order to the release of the detergent product during washing is possible, the device has numerous openings have, through which the product can escape. As alternative The device may be made of a material suitable for liquid permeable, for the solid product, however, impermeable is what the levy of the dissolved Product allows. Preferably, the detergent product becomes at the beginning of the wash cycle delivered quickly, causing it to temporarily localized high Concentrations of the product in the drum of the washing machine in this phase of the wash cycle comes.

preferred Dispensers are reusable and designed so that the container integrity both in the dry state as well as during the wash cycle is maintained.

Alternatively, the dispenser may be an elastic container such as a bag or a pillow. The bag may be of fibrous construction and coated with a waterproof protective material to retain the contents as disclosed in published European Patent Application No. 0018678. Alternatively, it may be formed from a water-insoluble synthetic polymeric material provided with an edge seal or closure designed to rupture in an aqueous medium, as disclosed in published European Patent Application Nos. 0011500, 0011501 , 0011502, and 0011968. A suitable form of water-soluble seal comprises a water-soluble adhesive which has been applied along one edge of a pad formed of a water impermeable polymer film such as polyethylene or polypropylene and closes it.

Examples

In the examples used abbreviations

STPP:

Natriumtripolyphosphat

Citrat:

Trinatriumcitratdihydrat

Hydrogencarbonat:

Natriumhydrogencarbonat

Citronensäure:

Wasserfreie Citronensäure

Carbonat:

Wasserfreies Natriumcarbonat

Silicat:

Amorphes Natriumsilicat (SiO₂:Na₂O-Verhältnis = 1,6-3,2).

PB1:

Wasserfreies Natriumperboratmonohydrat

PB4:

Natriumperborattetrahydrat der nominalen Formel NaBO₂·3H₂O·H₂O₂

Nichtionisch:

Nichtionisches Tensid, gemischt ethoxylierter/propoxylierter C₁₃-C₁₅-Fettalkohol mit einem durchschnittlichen Ethoxylierungsgrad von 3,8 und einem durchschnittlichen Propoxylierungs grad von 4,5, verkauft unter dem Handelsnamen Plurafac von der BASF

TAED:

Tetraacetylethylendiamin

HEDP:

Ethan-1-hydroxy-1,1-diphosphonsäure

DETPMP:

Diethylentriaminpenta(methylen)phosphonat, vermarktet von Monsanto unter dem Handelsnamen Dequest 2060

PAAC:

Pentaaminacetat-Cobalt(III)-Salz

Paraffin:

Paraffinöl, unter dem Handelsnamen Winog 70 durch Wintershall vertrieben.

Protease:

Proteolytisches Enzym

Amylase:

Amylolytisches Enzym.

BTA:

Benzotriazol

PA30:

Polyacrylsäure mit einem durchschnittlichen Molekulargewicht von etwa 4.500

Sulfat:

Wasserfreies Natriumsulfat.

PEG 4000:

Polyethylenglycol, Molekulargewicht etwa 4000, erhältlich von Hoechst

PEG 8000:

Polyethylenglycol, Molekulargewicht etwa 8000, erhältlich von Hoechst

Zucker:

Haushaltssaccharose

Gelatine:

Gelatine Typ A, Bloomzahl 65, erhältlich von Sigma

Stärke:

modifizierte Carboxymethylcellulose, verkauft unter dem Handelsnamen Nimcel, erhältlich von Metcaserle

Dodecandisäure:

C12-Dicarbonsäure

Triacetin:

Glycerintriacetat, verkauft unter dem Handelsnamen, erhältlich von der Eastman Corporation

Thixatrol:

Rizinusölderivat, verkauft unter dem Handelsnamen Thixatrol, verkauft von Rheox

PVP:

Polyvinylpyrrolidon mit einem Molekulargewicht von 300.000

PEO:

Polyethylenoxid mit einem Molekulargewicht von 45.000

pH:

Gemessen als 1-prozentige Lösung in destilliertem Wasser bei 20 °C.

In the detergent compositions, the abbreviated ingredient identifications have the following meanings:

STPP:

sodium tripolyphosphate

citrate:

trisodium

bicarbonate:

sodium

citric acid:

Anhydrous citric acid

carbonate:

Anhydrous sodium carbonate

Silicate:

Amorphous sodium silicate (SiO ₂ : Na ₂ O ratio = 1.6-3.2).

PB1:

Anhydrous sodium perborate monohydrate

PB4:

Sodium perborate tetrahydrate of nominal formula NaBO ₂ · 3H ₂ O · H ₂ O ₂

nonionic:

Nonionic surfactant, mixed ethoxylated / propoxylated C ₁₃ -C ₁₅ fatty alcohol having an average degree of ethoxylation of 3.8 and an average degree of propoxylation of 4.5, sold under the tradename Plurafac by BASF

TAED:

tetraacetylethylenediamine

HEDP:

Ethane-1-hydroxy-1,1-

DETPMP:

Diethylene triamine penta (methylene) phosphonate, marketed by Monsanto under the tradename Dequest 2060

PAAC:

Pentaamine acetate cobalt (III) salt

Paraffin:

Paraffin oil, marketed under the trade name Winog 70 by Wintershall.

protease:

Proteolytic enzyme

amylase:

Amylolytic enzyme.

BTA:

benzotriazole

PA30:

Polyacrylic acid with an average molecular weight of about 4,500

Sulfate:

Anhydrous sodium sulfate.

PEG 4000:

Polyethylene glycol, molecular weight about 4000, available from Hoechst

PEG 8000:

Polyethylene glycol, molecular weight about 8,000, available from Hoechst

Sugar:

household sucrose

Gelatin:

Gelatin type A, Bloom number 65, available from Sigma

Strength:

modified carboxymethylcellulose sold under the trade name Nimcel available from Metcaserle

dodecanedioic:

C12 dicarboxylic acid

triacetin:

Glycerol triacetate, sold under the trade name, available from Eastman Corporation

thixatrol:

Castor oil derivative sold under the trade name Thixatrol sold by Rheox

PVP:

Polyvinylpyrrolidone with a molecular weight of 300,000

PEO:

Polyethylene oxide with a molecular weight of 45,000

pH:

Measured as a 1% solution in distilled water at 20 ° C.

In In the following examples, all parts are weight% of the compressed Part, the non-compressed part or the coating layer indicated:

example 1

• ¹ Wie in US 5,677,272 offenbart.
• ² Amylaseenzym, wie in der Novo Nordisk-Anmeldung WO-A-9623873 offenbart und von einer alkalophilen Bacillus-Spezies mit einer N-terminalen Sequenz: His-His-Asn-Gly-Thr-Asn-Gly-Thr-Met-Met-Gln-Tyr-Phe-Glu-Trp-Tyr-Leu-Pro-Asn-Asp erhalten.
• ³ ausgewählt aus Natriumcarboxymethylcellulose-, Methylcellulose-, Hydroxyethylcellulose- und Hydroxypropylcellulose- und gemischten Ethern, z. B. Hydroxypropylmethylcellulose-.
• ⁴ MG 4.000-8.000.
• ⁵ NaDCC, Natriumperborat oder Natriumpercarbonat.

The compressed portion is prepared by dispensing the detergent ingredient composition into a die cavity of a modified 12-headed rotary tablet press and compressing the composition at a pressure of 13 KN / cm ² . The modified tablet press provides a tablet wherein the compressed part has a trough. The non-compressed part gets into the trough of the compressed part cast. For the purpose of Examples A to H, the non-compressed part comprises a gelling agent. Once the uncompressed part has been added to the cavity of the detergent tablet, the detergent tablet is subjected to a conditioning step during which the non-compressed part hardens.

• ¹ as in US 5,677,272 disclosed.
• ² amylase enzyme as disclosed in Novo Nordisk Application WO-A-9623873 and an alkalophilic Bacillus species having an N-terminal sequence: His-His-Asn-Gly-Thr-Asn-Gly-Thr-Met-Met Gln-Tyr-Phe-Glu-Trp-Tyr-Leu-Pro-Asn-Asp.
• ³ selected from sodium carboxymethylcellulose, methylcellulose, hydroxyethylcellulose and hydroxypropylcellulose and mixed ethers, e.g. B. Hydroxypropylmethylcellulose-.
• ⁴ MG 4,000-8,000.
• ⁵ NaDCC, sodium perborate or sodium percarbonate.

Example 2

The compressed portion is prepared by dispensing the detergent component composition into a die cavity of a modified 12-headed rotary tablet press and compressing the composition at a pressure of 13 KN / cm ² . The modified tablet press provides tablets in which the compressed part has a trough. For the purposes of Examples I to K, the non-compressed part is in particulate form. The non-compressed part is then poured into the trough of the compressed part and coated with a coating layer. For the purposes of Examples L to N, the non-compressed part comprises a binder. The non-compressed part is poured into the trough of the compressed part and then subjected to a conditioning step during which the non-compressed part hardens.

Claims (16)

Detergent tablet containing a compressed part and a non-compressed part, wherein: (a) the compressed one Part of a prepared depression or depression includes and measured using the SOTAX dissolution test method described herein, based on the weight dissolves faster than the non-compressed Part; and (b) the non-compressed part is an accessory and at least partially retained in the trough. A detergent tablet comprising a compressed portion and a non-compressed portion comprising an equipment additive, the non-compressed portion, as measured by the SOTAX dissolution test method described herein, resolving by weight faster than the compressed portion, and wherein the density of the non-compressed portion at least 0.2 g / cm ^{3 is} less than the density of the compressed part. Detergent tablet containing a compressed part and comprising a non-compressed part, wherein: a) the compressed Part as measured by the SOTAX dissolution test method described herein dissolves faster on the weight as the non-compressed part; and b) the non-compressed Part of an equipment accessory and is free of metasilicates. A detergent tablet according to any one of the preceding claims, wherein the equipment accessory selected is from the group consisting of organic polymeric compound, Co-builder, enzyme, oxygen-releasing bleach, bleach precursor or catalyst, surfactant, crystallization retarder, bleach-decomposing Medium. A detergent tablet according to any one of the preceding claims, wherein At least 60% of the compressed part is within 12 minutes in deionized water at 50 ° C dissolve. A detergent tablet according to any one of the preceding claims, wherein At least 80% of the compressed part is within 12 minutes in deionized water at 50 ° C dissolve. A detergent tablet according to any one of the preceding claims, wherein less than 40% of the uncompressed part is within Dissolve in deionized water at 50 ° C for 12 minutes. A detergent tablet according to any one of the preceding claims, wherein less than 20% of the uncompressed portion is within Dissolve in deionized water at 50 ° C for 12 minutes. A detergent tablet according to any one of the preceding claims, wherein the non-compressed part starts to dissipate after being in the Essentially the whole compressed part has resolved. Use of a detergent tablet according to one of preceding claims in a washing machine with a washing cycle in which at least 60% of the compressed part within the first 12 minutes of the Dissolve wash cycle and not more than 40% of the uncompressed part dissolve in the wash cycle. Detergent tablet containing a compressed part and a non-compressed part, wherein: a) the compressed Part as measured by the SOTAX dissolution test method described herein dissolves faster on the weight as the non-compressed part; and b) the non-compressed Part of an equipment accessory which is a fabric softener or a rinse aid is. A detergent tablet according to claim 11 wherein the fabric softener a cationic fabric softening agent. A detergent tablet according to claim 11, wherein the rinse aid comprises a nonionic surfactant. Method for washing laundry, which treatment from dirty laundry with an aqueous wash solution in a washing machine, in which a detergent tablet after one of the claims 1 to 9, 11 or 12 solved or distributed. The method of claim 14, wherein the equipment additive a fabric softener and wherein the fabric softener is in the rinse cycle the washing machine is dispensed after the clothes have been washed, and softens the fabric. Method for cleaning soiled objects in a dishwasher, treating the soiled objects with an aqueous liquid in a dishwasher in which a detergent tablet according to any one of claims 1 to 9, 11 or 13 solved or distributed.