EP0999261A1 - Farbige Tablette - Google Patents

Farbige Tablette Download PDF

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Publication number
EP0999261A1
EP0999261A1 EP98870239A EP98870239A EP0999261A1 EP 0999261 A1 EP0999261 A1 EP 0999261A1 EP 98870239 A EP98870239 A EP 98870239A EP 98870239 A EP98870239 A EP 98870239A EP 0999261 A1 EP0999261 A1 EP 0999261A1
Authority
EP
European Patent Office
Prior art keywords
tablet
layer
acid
detergent
tablets
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98870239A
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English (en)
French (fr)
Inventor
Jose Arnau Munoz (NMN)
Jose Luis Vega
Maria Del Mar Ollero Novo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to EP98870239A priority Critical patent/EP0999261A1/de
Priority to BR9915061-1A priority patent/BR9915061A/pt
Priority to CZ20011302A priority patent/CZ20011302A3/cs
Priority to PCT/US1999/025223 priority patent/WO2000027989A1/en
Priority to EP99971843A priority patent/EP1124934A1/de
Priority to AU12372/00A priority patent/AU1237200A/en
Priority to JP2000581156A priority patent/JP2002529586A/ja
Priority to CA002347791A priority patent/CA2347791A1/en
Priority to CN99815441A priority patent/CN1333816A/zh
Priority to KR1020017005673A priority patent/KR20010075683A/ko
Priority to ARP990105610A priority patent/AR021103A1/es
Publication of EP0999261A1 publication Critical patent/EP0999261A1/de
Withdrawn legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0086—Laundry tablets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0063—Photo- activating compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0047—Detergents in the form of bars or tablets
    • C11D17/0065—Solid detergents containing builders
    • C11D17/0073—Tablets
    • C11D17/0078—Multilayered tablets
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/395—Bleaching agents
    • C11D3/3955—Organic bleaching agents
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/12—Soft surfaces, e.g. textile

Definitions

  • the invention relates to a detergent tablet.
  • Detergent products are widely used as consumer products and are widely produced by industry. Most consumers have come to expect detergent products having satisfactory aesthetics and being convenient to use. This lead for example to the development of a family of detergent products in a solid form usually called detergent tablets, some of these tablets having only one layer, and others being formed from several. In order to maintain the basic requirements of consumers, such detergent tablets may be coloured.
  • the coloration of detergent tablets has the advantage to increase consumer acceptance, but has the disadvantage to introduce in the composition of such tablets elements such as a dye which has a function limited to an aesthetic improvement. Additionally, the introduction of a dye in a detergent product participates to the cost of the detergent product. Further, in the particular example of laundry detergent tablets, such a dye may produce stains onto garments. It should also be noted that production and use of a dye is creating an extra burden to the environment.
  • the invention seeks to provide a tablet having at least one coloured layer whereby at least some of the above mentioned disadvantages are reduced.
  • this object is accomplished with a detergent tablet comprising at least one coloured layer, whereby the colour is produced by a component having a function in cleaning.
  • the detergent tablet according to the invention comprises at least one coloured layer.
  • the tablet comprises compounds such as surfactants which modify the surface tension of water.
  • coloured layer it should be understood that the layer is not white.
  • colour is measured using a CHROMA METER.
  • CR310 by MINOLTA having an illumination / viewing angle fixed to 0°, using a standard illuminant C (Average daylight not including ultraviolet wavelength region), the measurement being on a 50 mm diameter area.
  • the measurement can be made on powder by depositing between 10 and 25 g, preferably 25 g, of powder in a beaker having a height of 10 cm and a 50 mm diameter, the temperature being of 20°C, the beaker being located on the light projection tube.
  • the measurement can be directly made on a tablet, the tablet having a weight of 54 g for example, the light projection tube being place on the tablet.
  • the measurement provides three values being the L, a and b values as illustrated on Figure 1.
  • the L value is a measurement of the black/white scale.
  • the a value returns a measurement of the green/red scale.
  • the b value returns a measurement of the Blue/yellow scale.
  • Such an L, a, b scale can be obtained from Hunter Lab 11491 Sunset Hills Road, Reston, VA 22090, USA. When using the CHROMA METER. CR310 by MINOLTA the standard deviation of the measurement is of 0.07.
  • white should be understood as a measured colour whereby the a and b values are close to zero. It should be noted that a slight positive b value is acceptable in “white”.
  • coloration of a layer is preferably a uniform coloration, whereby no differences of more than 50%, preferably 40%, more preferably 30% and most preferably 10% in the measured L, a and b values are existing between any different apparent portions of the coloured layer which are each representing at least 3% of the total apparent surface of the coloured layer.
  • the colour is produced by a component having a function in cleaning.
  • a component having a function in cleaning it should be understood that the component is directly or indirectly active for removing soils of stains or for fabric care.
  • directly active it is meant that it is directly involved in removing soils or stains, this including for example surfactants, bleaching species, or enzymes, or for fabric care, including for example fabric softeners, dye transfer inhibition agents.
  • indirectly active it is meant that the component is for example favouring the activity of the directly active components, as is the case for example for builders, Highly soluble Compounds, hydrotrope compounds, compound having a Cohesive Effect, coating compounds, effervescent compounds, binders, non gelling binders, chelating agents, soil release agents, soil antiredeposition agents, dispersing agents. Excluded here are compounds having no direct or indirect activity for cleaning such as perfumes or dyes. Indeed, such elements have a purely aesthetic activity.
  • an advantage of the invention is that the colour of the coloured layer is produced by a component having a function in cleaning, and not by a dye. It should be noted that small amounts of dye may be included to tune the aesthetic of the coloured layer. However, the may colour component is produced by the component having a function in cleaning. By tuning, it should be understood that the a, b or L values can be modified of a few units, typically of about 3 to 5 units. In a preferred embodiment, the colour of the coloured tablet is produced by a mixture of components having a function in cleaning. This allows to produce a preferred tablet according to the invention which is free of dye.
  • the tablet according to the invention preferably comprises a binder.
  • a binder may be useful for example to be sprayed onto the matrix together with the the component having a function in cleaning and producing the colour, and optionally with a brightener component, for example prior to compressing the matrix in tablet form.
  • the brightener component may also be added in the layer which comprises a larger quantity of a brightener component than the other layer as a dry ingredient prior to binder spray-on.
  • a preferred process for producing a tablet according to the invention is the process for producing a tablet as in claim 1, whereby the component having a function in cleaning is mixed with a non-ionic carrier in a first step, sprayed onto a particular product in a second step, the particular product being compressed to form the tablet in a third step, the non-ionic carrier being preferably a binder, such as Poly Ethylene Glycol for example.
  • the tablet has a tensile strength of less than 100kPa.
  • the tablet is preferred for use in laundry applications, whereby a low tensile strength is preferred to favour dissolution, when compared for example with auto-dish washing tablets.
  • high level of dyes in laundry tablets may result in stained garments, this being avoided with the tablet of the invention.
  • Even more preferred are tablets having a coating.
  • tablets according to the invention and having a coating should have a colour which is visible through the coating. With the usual dye technology, this implies use of high dye levels, thereby increasing the risk of staining garments. Therefore, the invention is particularly advantageous in this case.
  • a photobleach is used for producing colour, whereby the colour of the photobleach will fade when exposed to light, thereby further limiting staining garments.
  • the detergent tablet should be stored in a package which does not allow light to penetrate in the package, in order to avoid decomposition and loss of colour of the photobleach. This can be obtained by use of cartons or metallic foils for example.
  • a tablet comprising a layer coloured by a photobleach is packed in a packaging system which prevents at least partially and preferably totally transmission of UV light.
  • the tablet comprises at least two layers being the coloured layer and the at least another layer being white. This is preferably accomplished when the layer being white comprises a larger quantity of a brightener component than another layer.
  • a brightener is typically a fluorescent whitening agent. Examples of brighteners include:
  • the layer being white comprises a smaller quantity of coloured components, and even more preferably is free of any coloured components.
  • a larger quantity in one layer than in an other layer it should be understood that a larger quantity is a larger quantity by weight of a component, preferably more than 1% more per weight of this component in one layer than in a other, more preferably more than 10%, even more preferably more than 50%, and most preferably when the other layer does not comprise at all of the component, whereas the one layer does. Smaller quantity is defined exactly in the opposite manner.
  • the tablet comprises at least two layers being the coloured layer and at least another layer having a different colour.
  • the component having a function in cleaning, which produces the colour is a coloured photobleach.
  • a photobleach is typically a chemical compound which produces an oxidising compound which oxidises double bonds. It should be noted that the production of the oxidising compound is normally triggered by light (therefore the name photobleach). Normally, photobleaches have a colour. An intensive research effort has been produced by industry to develop a photobleach which would not produce a visible colour, as this visible colour has been considered as a disruption of the aesthetics of the detergents, this disruption being often avoided by encapsulating the photobleach. However, it has been found according to the invention that such a colour could be beneficially used to colour the layer, thereby avoiding use of dyes.
  • Photobleach compounds include the following:
  • metal phthalocyanines can also be used.
  • the tablets may comprise components such as fragrance, surfactants, enzymes, detergent etc....
  • Typical tablet compositions for the preferred embodiment of the present invention are disclosed in the pending European applications of the Applicant n° 96203471.6, 96203462.5, 96203473.2 and 96203464.1 for example.
  • Elements typically entering in the composition of detergent tablets or of other forms of detergents such as liquids or granules are detailed in the following paragraphs.
  • the tablet may comprise a highly soluble compound.
  • a highly soluble compound is defined as follow:
  • a solution is prepared as follows comprising de-ionised water as well as 20 grams per litre of a specific compound:
  • the tablet may comprise a compound having a Cohesive Effect on the particulate material of a detergent matrix forming the tablet.
  • the Cohesive Effect on the particulate material of a detergent matrix forming the tablet or a layer of the tablet is characterised by the force required to break a tablet or layer based on the examined detergent matrix pressed under controlled compression conditions. For a given compression force, a high tablet or layer strength indicates that the granules stuck highly together when they were compressed, so that a strong cohesive effect is taking place.
  • Means to assess tablet or layer strength are given in Pharmaceutical dosage forms : tablets volume 1 Ed. H.A. Lieberman et al, published in 1989.
  • the cohesive effect is measured by comparing the tablet or layer strength of the original base powder without compound having a cohesive effect with the tablet or layer strength of a powder mix which comprises 97 parts of the original base powder and 3 parts of the compound having a cohesive effect.
  • the compound having a cohesive effect is preferably added to the matrix in a form in which it is substantially free of water (water content below 10% (pref. below 5%)).
  • the temperature of the addition is between 10 and 80C, more pref. between 10 and 40C.
  • a compound is defined as having a cohesive effect on the particulate material according to the invention when at a given compacting force of 3000N, tablets with a weight of 50g of detergent particulate material and a diameter of 55mm have their tablet tensile strength increased by over 30% (preferably 60 and more preferably 100%) by means of the presence of 3% of the compound having a cohesive effect in the base particulate material.
  • An example of a compound having a cohesive effect is Sodium di isoalkylbenzene sulphonate.
  • the dissolution of the tablet or layer in an aqueous solution is significantly increased.
  • at least 1% per weight of a tablet or layer is formed from the highly soluble compound, more preferably at least 2%, even more preferably at lest 3% and most preferably at least 5% per weight of the tablet or layer being formed from the highly soluble compound having a cohesive effect on the particulate material.
  • a composition comprising a highly soluble compound as well as a surfactant is disclosed in EP-A-0 524 075, this composition being a liquid composition.
  • a highly soluble compound having a cohesive effect on the particulate material allows to obtain a tablet having a higher tensile strength at constant compacting force or an equal tensile strength at lower compacting force when compared to traditional tablets.
  • a whole tablet will have a tensile strength of more than 5kPa, preferably of more than 10kPa, more preferably, in particular for use in laundry applications, of more than 15kPa, even more preferably of more than 30 kPa and most preferably of more than 50 kPa, in particular for use in dish washing or auto dish washing applications; and a tensile strength of less than 300 kPa, preferably of less than 200 kPa, more preferably of less than 100 kPa, even more preferably of less than 80 kPa and most preferably of less than 60 kPa.
  • the tablets should be less compressed than in case of auto dish washing applications for example, whereby the dissolution is more readily achieved, so that in a laundry application, the tensile strength is preferably of less than 30 kPa.
  • the tensile strength is preferably of less than 30 kPa.
  • the tablet may comprise several layers.
  • the layer may be considered as a tablet itself.
  • Detergent tablets can be prepared simply by mixing the solid ingredients together and compressing the mixture in a conventional tablet press as used, for example, in the pharmaceutical industry.
  • the principal ingredients in particular gelling surfactants, are used in particulate form.
  • Any liquid ingredients, for example surfactant or suds suppressor, can be incorporated in a conventional manner into the solid particulate ingredients.
  • the ingredients such as builder and surfactant can be spray-dried in a conventional manner and then compacted at a suitable pressure.
  • the tablets according to the invention are compressed using a force of less than 100000N, more preferably of less than 50000N, even more preferably of less than 5000N and most preferably of less than 3000 N.
  • the most preferred embodiment is a tablet suitable for laundry compressed using a force of less than 2500N, but tablets for auto dish washing may also be considered for example, whereby such auto dish washing tablets are usually more compressed than laundry tablets.
  • the particulate material used for making a tablet can be made by any particulation or granulation process.
  • An example of such a process is spray drying (in a co-current or counter current spray drying tower) which typically gives low bulk densities 600g/l or lower.
  • Particulate materials of higher density can be prepared by granulation and densification in a high shear batch mixer/granulator or by a continuous granulation and densification process (e.g. using Lodige® CB and/or Lodige® KM mixers).
  • Other suitable processes include fluid bed processes, compaction processes (e.g. roll compaction), extrusion, as well as any particulate material made by any chemical process like flocculation, crystallisation sentering, etc.
  • Individual particles can also be any other particle, granule, sphere or grain.
  • the components of the particulate material may be mixed together by any conventional means. Batch is suitable in, for example, a concrete mixer, Nauta mixer, ribbon mixer or any other. Alternatively the mixing process may be carried out continuously by metering each component by weight on to a moving belt, and blending them in one or more drum(s) or mixer(s).
  • Non-gelling binder can be sprayed on to the mix of some, or all of, the components of the particulate material.
  • Other liquid ingredients may also be sprayed on to the mix of components either separately or premixed. For example perfume and slurries of optical brighteners may be sprayed.
  • a finely divided flow aid (dusting agent such as zeolites, carbonates, silicas) can be added to the particulate material after spraying the binder, preferably towards the end of the process, to make the mix less sticky.
  • the tablets may be manufactured by using any compacting process, such as tabletting, briquetting, or extrusion, preferably tabletting. Suitable equipment includes a standard single stroke or a rotary press (such as Courtoy®, Korch®, Manesty®, or Bonals®).
  • the tablets prepared according to this invention preferably have a diameter of between 20mm and 60mm, preferably of at least 35 and up to 55 mm, and a weight between 25 and 100 g.
  • the ratio of height to diameter (or width) of the tablets is preferably greater than 1:3, more preferably greater than 1:2.
  • the compaction pressure used for preparing these tablets need not exceed 100000 kN/m 2 , preferably not exceed 30000 kN/m 2 , more preferably not exceed 5000 kN/m 2 , even more preferably not exceed 3000kN/m 2 and most preferably not exceed 1000kN/m 2 .
  • the tablet has a density of at least 0.9 g/cc, more preferably of at least 1.0 g/cc, and preferably of less than 2.0 g/cc, more preferably of less than 1.5 g/cc, even more preferably of less than 1.25 g/cc and most preferably of less than 1.1 g/cc.
  • Multi layered tablets are typically formed in rotating presses by placing the matrices of each layer, one after the other in matrix force feeding flasks. As the process continues, the matrix layers are then pressed together in the precompression and compression stages stations to form the multilayer layer tablet. With some rotating presses it is also possible to compress the first feed layer before compressing the whole tablet.
  • a highly soluble compound having a cohesive effect may be integrated to a detergent tablet, whereby this compound is also a hydrotrope compound.
  • Such hydrotrope compound may be generally used to favour surfactant dissolution by avoiding gelling.
  • a specific compound is defined as being hydrotrope as follows (see S.E. Friberg and M. Chiu, J. Dispersion Science and Technology, 9(5&6), pages 443 to 457, (1988-1989)):
  • Solidity of a tablet may be improved by making a coated tablet, the coating covering a non-coated tablet, thereby further improving the mechanical characteristics of the tablet while maintaining or further improving dissolution.
  • This very advantageously applies to multi-layer tablets, whereby the mechanical characteristics of a more elastic layer can be transmitted via the coating to the rest of the tablet, thus combining the advantage of the coating with the advantage of the more elastic layer. Indeed, mechanical constraints will be transmitted through the coating, thus improving mechanical integrity of the tablet.
  • the tablets may then be coated so that the tablet does not absorb moisture, or absorbs moisture at only a very slow rate.
  • the coating is also strong so that moderate mechanical shocks to which the tablets are subjected during handling, packing and shipping result in no more than very low levels of breakage or attrition.
  • the coating is preferably brittle so that the tablet breaks up when subjected to stronger mechanical shock. Furthermore it is advantageous if the coating material is dissolved under alkaline conditions, or is readily emulsified by surfactants. This contributes to avoiding the problem of visible residue in the window of a front-loading washing machine during the wash cycle, and also avoids deposition of undissolved particles or lumps of coating material on the laundry load. Water solubility is measured following the test protocol of ASTM E1148-87 entitled, "Standard Test Method for Measurements of Aqueous Solubility". Suitable coating materials are dicarboxylic acids.
  • Particularly suitable dicarboxylic acids are selected from the group consisting of oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, pimelic acid, suberic acid, azelaic acid, sebacic acid, undecanedioic acid, dodecanedioic acid, tridecanedioic acid and mixtures thereof.
  • the coating material has a melting point preferably of from 40 °C to 200 °C.
  • the coating can be applied in a number of ways. Two preferred coating methods are a) coating with a molten material and b) coating with a solution of the material. In a), the coating material is applied at a temperature above its melting point, and solidifies on the tablet. In b), the coating is applied as a solution, the solvent being dried to leave a coherent coating.
  • the substantially insoluble material can be applied to the tablet by, for example, spraying or dipping. Normally when the molten material is sprayed on to the tablet, it will rapidly solidify to form a coherent coating. When tablets are dipped into the molten material and then removed, the rapid cooling again causes rapid solidification of the coating material.
  • substantially insoluble materials having a melting point below 40 °C are not sufficiently solid at ambient temperatures and it has been found that materials having a melting point above about 200 °C are not practicable to use.
  • the materials melt in the range from 60 °C to 160 °C, more preferably from 70 °C to 120 °C
  • melting point is meant the temperature at which the material when heated slowly in, for example, a capillary tube becomes a clear liquid.
  • a coating of any desired thickness can be applied according to the present invention. For most purposes, the coating forms from 1% to 10%, preferably from 1.5% to 5%, of the tablet weight. Tablet coatings are very hard and provide extra strength to the tablet.
  • Fracture of the coating in the wash can be improved by adding a disintegrant in the coating.
  • This disintegrant will swell once in contact with water and break the coating in small pieces. This will improve the dissolution of the coating in the wash solution.
  • the disintegrant is suspended in the coating melt at a level of up to 30%, preferably between 5% and 20%, most preferably between 5 and 10% by weight. Possible disintegrants are described in Handbook of Pharmaceutical Excipients (1986).
  • Suitable disintegrants include starch: natural, modified or pregelatinized starch, sodium starch gluconate; gum: agar gum, guar gum, locust bean gum, karaya gum, pectin gum, tragacanth gum; croscarmylose Sodium, crospovidone, cellulose, carboxymethyl cellulose, algenic acid and its salts including sodium alginate, silicone dioxide, clay, polyvinylpyrrolidone, soy polysacharides, ion exchange resins and mixtures thereof.
  • the layer may be considered as a tablet itself.
  • the used compacting force may be adjusted to not affect the tensile strength, and the disintegration time in the washing machine. This process may be used to prepare homogenous or layered tablets of any size or shape.
  • a tablet having a diametral fracture stress of less than 20 kPa is considered to be fragile and is likely to result in some broken tablets being delivered to the consumer.
  • a diametral fracture stress of at least 25 kPa is preferred. This applies similarly to non cylindrical tablets, to define the tensile strength, whereby the cross section normal to the height of the tablet is non round, and whereby the force is applied along a direction perpendicular to the direction of the height of the tablet and normal to the side of the tablet, the side being perpendicular to the non round cross section.
  • Detergent tablets may further comprise an effervescent.
  • Effervescency as defined herein means the evolution of bubbles of gas from a liquid, as the result of a chemical reaction between a soluble acid source and an alkali metal carbonate, to produce carbon dioxide gas, i.e. C 6 H 8 O 7 + 3NaHCO 3 ⁇ Na 3 C 6 H 5 O 7 + 3CO 2 ⁇ + 3H 2 O
  • acid and carbonate sources and other effervescent systems may be found in: (Pharmaceutical Dosage Forms : Tablets Volume 1 Page 287 to 291).
  • An effervescent may be added to the tablet mix in addition to the detergent ingredients. The addition of this effervescent to the detergent tablet improves the disintegration time of the tablet.
  • the amount will preferably be between 5 and 20 % and most preferably between 10 and 20% by weight of the tablet.
  • the effervescent should be added as an agglomerate of the different particles or as a compact, and not as separated particles. Due to the gas created by the effervescency in the tablet, the tablet can have a higher D.F.S. and still have the same disintegration time as a tablet without effervescency. When the D.F.S. of the tablet with effervescency is kept the same as a tablet without, the disintegration of the tablet with effervescency will be faster.
  • Further dissolution aid could be provided by using compounds such as sodium acetate or urea. A list of suitable dissolution aid may also be found in Pharmaceutical Dosage Forms: Tablets, Volume 1, Second edition, Edited by H.A. Lieberman et all, ISBN 0-8247-8044-2.
  • Surfactant are typically comprised in a detergent composition.
  • the dissolution of surfactants is favoured by the addition of the highly soluble compound.
  • Nonlimiting examples of surfactants useful herein typically at levels from about 1% to about 55%, by weight, include the conventional C 11- C 18 alkyl benzene sulfonates ("LAS") and primary, branched-chain and random C 10- C 20 alkyl sulfates ("AS"), the C 10- C 18 secondary (2,3) alkyl sulfates of the formula CH 3 (CH 2 ) x (CHOSO 3- M + ) CH 3 and CH 3 (CH 2 ) y (CHOSO 3- M + ) CH 2 CH 3 where x and (y + 1) are integers of at least about 7, preferably at least about 9, and M is a water-solubilizing cation, especially sodium, unsaturated sulfates such as oleyl sulfate, the C 10- C 18 alkyl alkoxy sulfates ("AE x
  • the conventional nonionic and amphoteric surfactants such as the C 12- C 18 alkyl ethoxylates ("AE") including the so-called narrow peaked alkyl ethoxylates and C 6 -C 12 alkyl phenol alkoxylates (especially ethoxylates and mixed ethoxy/propoxy), C 12- C 18 betaines and sulfobetaines ("sultaines"), C 10- C 18 amine oxides, and the like, can also be included in the overall compositions.
  • the C 10 -C 18 N-alkyl polyhydroxy fatty acid amides can also be used. Typical examples include the C 12 -C 18 N-methylglucamides. See WO 9,206,154.
  • sugar-derived surfactants include the N-alkoxy polyhydroxy fatty acid amides, such as C 10 -C 18 N-(3-methoxypropyl) glucamide.
  • the N-propyl through N-hexyl C 12 -C 18 glucamides can be used for low sudsing.
  • C 10 -C 20 conventional soaps may also be used. If high sudsing is desired, the branched-chain C 10 -C 16 soaps may be used. Mixtures of anionic and nonionic surfactants are especially useful.
  • the tablet comprises at least 5% per weight of surfactant, more preferably at least 15% per weight, even more preferably at least 25% per weight, and most preferably between 35% and 45% per weight of surfactant.
  • Non gelling binders can be integrated in detergent compositions to further facilitate dissolution. If non gelling binders are used, suitable non-gelling binders include synthetic organic polymers such as polyethylene glycols, polyvinylpyrrolidones, polyacrylates and water-soluble acrylate copolymers.
  • binders classification Acacia, Alginic Acid, Carbomer, Carboxymethylcellulose sodium, Dextrin, Ethylcellulose, Gelatin, Guar gum, Hydrogenated vegetable oil type I, Hydroxyethyl cellulose, Hydroxypropyl methylcellulose, Liquid glucose, Magnesium aluminum silicate, Maltodextrin, Methylcellulose, polymethacrylates, povidone, sodium alginate, starch and zein. Most preferable binders also have an active cleaning function in the laundry wash such as cationic polymers, i.e.
  • Non-gelling binder materials are preferably sprayed on and hence have an appropriate melting point temperature below 90°C, preferably below 70°C and even more preferably below 50°C so as not to damage or degrade the other active ingredients in the matrix.
  • non-aqueous liquid binders i.e. not in aqueous solution
  • they may also be solid binders incorporated into the matrix by dry addition but which have binding properties within the tablet.
  • Non-gelling binder materials are preferably used in an amount within the range from 0.1 to 15% of the composition, more preferably below 5% and especially if it is a non laundry active material below 2% by weight of the tablet. It is preferred that getting binders, such as nonionic surfactants are avoided in their liquid or molten form. Nonionic surfactants and other gelling binders are not excluded from the compositions, but it is preferred that they be processed into the detergent tablets as components of particulate materials, and not as liquids.
  • Detergent builders can optionally be included in the compositions herein to assist in controlling mineral hardness.
  • Inorganic as well as organic builders can be used. Builders are typically used in fabric laundering compositions to assist in the removal of particulate soils. The level of builder can vary widely depending upon the end use of the composition.
  • Inorganic or P-containing detergent builders include, but are not limited to, the alkali metal, ammonium and alkanolammonium salts of polyphosphates (exemplified by the tripolyphosphates, pyrophosphates, and glassy polymeric meta-phosphates), phosphonates, phytic acid, silicates, carbonates (including bicarbonates and sesquicarbonates), sulphates, and aluminosilicates.
  • non-phosphate builders are required in some locales.
  • the compositions herein function surprisingly well even in the presence of the so-called "weak” builders (as compared with phosphates) such as citrate, or in the so-called "underbuilt” situation that may occur with zeolite or layered silicate builders.
  • silicate builders are the alkali metal silicates, particularly those having a SiO 2 :Na 2 O ratio in the range 1.6:1 to 3.2:1 and layered silicates, such as the layered sodium silicates described in U.S. Patent 4,664,839, issued May 12, 1987 to H. P. Rieck.
  • NaSKS-6 is the trademark for a crystalline layered silicate marketed by Hoechst (commonly abbreviated herein as "SKS-6"). Unlike zeolite builders, the Na SKS-6 silicate builder does not contain aluminum. NaSKS-6 has the delta-Na 2 SiO 5 morphology form of layered silicate. It can be prepared by methods such as those described in German DE-A-3,417,649 and DE-A-3,742,043.
  • SKS-6 is a highly preferred layered silicate for use herein, but other such layered silicates, such as those having the general formula NaMSi x O 2x+1 ⁇ yH 2 O wherein M is sodium or hydrogen, x is a number from 1.9 to 4, preferably 2, and y is a number from 0 to 20, preferably 0 can be used herein.
  • Various other layered silicates from Hoechst include NaSKS-5, NaSKS-7 and NaSKS-11, as the alpha, beta and gamma forms. As noted above, the delta-Na 2 SiO 5 (NaSKS-6 form) is most preferred for use herein.
  • silicates may also be useful such as for example magnesium silicate, which can serve as a crispening agent in granular formulations, as a stabilizing agent for oxygen bleaches, and as a component of suds control systems.
  • carbonate builders are the alkaline earth and alkali metal carbonates as disclosed in German Patent Application No. 2,321,001 published on November 15, 1973.
  • Aluminosilicate builders are useful in the present invention. Aluminosilicate builders are of great importance in most currently marketed heavy duty granular detergent compositions, and can also be a significant builder ingredient in liquid detergent formulations.
  • Aluminosilicate builders include those having the empirical formula: M z (zAlO 2 ) y ] ⁇ xH 2 O wherein z and y are integers of at least 6, the molar ratio of z to y is in the range from 1.0 to about 0.5, and x is an integer from about 15 to about 264.
  • Useful aluminosilicate ion exchange materials are commercially available. These aluminosilicates can be crystalline or amorphous in structure and can be naturally-occurring aluminosilicates or synthetically derived.
  • a method for producing aluminosilicate ion exchange materials is disclosed in U.S. Patent 3,985,669, Krummel, et al, issued October 12, 1976.
  • the aluminosilicate has a particle size of about 0.1-10 microns in diameter.
  • Organic detergent builders suitable for the purposes of the present invention include, but are not restricted to, a wide variety of polycarboxylate compounds.
  • polycarboxylate refers to compounds having a plurality of carboxylate groups, preferably at least 3 carboxylates.
  • Polycarboxylate builder can generally be added to the composition in acid form, but can also be added in the form of a neutralized salt. When utilized in salt form, alkali metals, such as sodium, potassium, and lithium, or alkanolammonium salts are preferred. Included among the polycarboxylate builders are a variety of categories of useful materials.
  • polycarboxylate builders encompasses the ether polycarboxylates, including oxydisuccinate, as disclosed in Berg, U.S. Patent 3,128,287, issued April 7, 1964, and Lamberti et al, U.S. Patent 3,635,830, issued January 18, 1972. See also "TMS/TDS" builders of U.S. Patent 4,663,071, issued to Bush et al, on May 5, 1987.
  • Suitable ether polycarboxylates also include cyclic compounds, particularly alicyclic compounds, such as those described in U.S. Patents 3,923,679; 3,835,163; 4,158,635; 4,120,874 and 4,102,903.
  • ether hydroxypolycarboxylates copolymers of maleic anhydride with ethylene or vinyl methyl ether, 1, 3, 5-trihydroxy benzene-2, 4, 6-trisulphonic acid, and carboxymethyloxysuccinic acid
  • various alkali metal, ammonium and substituted ammonium salts of polyacetic acids such as ethylenediamine tetraacetic acid and nitrilotriacetic acid
  • polycarboxylates such as mellitic acid, succinic acid, oxy-disuccinic acid, polymaleic acid, benzene 1,3,5-tricarboxylic acid, carboxymethyloxysuccinic acid, and soluble salts thereof.
  • Citrate builders e.g., citric acid and soluble salts thereof (particularly sodium salt), are polycarboxylate builders of particular importance for heavy duty liquid detergent formulations due to their availability from renewable resources and their biodegradability. Citrates can also be used in granular compositions, especially in combination with zeolite and/or layered silicate builders. Oxydisuccinates are also especially useful in such compositions and combinations. Also suitable in the detergent compositions of the present invention are the 3,3-dicarboxy-4-oxa-1,6-hexanedioates and the related compounds disclosed in U.S. Patent 4,566,984, Bush, issued January 28, 1986.
  • succinic acid builders include the C 5 -C 20 alkyl and alkenyl succinic acids and salts thereof.
  • a particularly preferred compound of this type is dodecenylsuccinic acid.
  • succinate builders include: laurylsuccinate, myristylsuccinate, palmitylsuccinate, 2-dodecenylsuccinate (preferred), 2-pentadecenylsuccinate, and the like. Laurylsuccinates are the preferred builders of this group, and are described in European Patent Application 86200690.5/0,200,263, published November 5, 1986. Other suitable polycarboxylates are disclosed in U.S.
  • Fatty acids e.g., C 12 -C 18 monocarboxylic acids
  • Such use of fatty acids will generally result in a diminution of sudsing, which should be taken into account by the formulator.
  • the various alkali metal phosphates such as the well-known sodium tripolyphosphates, sodium pyrophosphate and sodium orthophosphate can be used.
  • Phosphonate builders such as ethane-1-hydroxy-1,1-diphosphonate and other known phosphonates (see, for example, U.S. Patents 3,159,581; 3,213,030; 3,422,021; 3,400,148 and 3,422,137) can also be used.
  • the detergent compositions herein may optionally contain bleaching agents or bleaching compositions containing a bleaching agent and one or more bleach activators.
  • bleaching agents will typically be at levels of from about 1% to about 30%, more typically from about 5% to about 20%, of the detergent composition, especially for fabric laundering.
  • the amount of bleach activators will typically be from about 0.1 % to about 60%, more typically from about 0.5% to about 40% of the bleaching composition comprising the bleaching agent-plus-bleach activator.
  • the bleaching agents used herein can be any of the bleaching agents useful for detergent compositions in textile cleaning, hard surface cleaning, or other cleaning purposes that are now known or become known. These include oxygen bleaches as well as other bleaching agents.
  • Perborate bleaches e.g., sodium perborate (e.g., mono- or tetra-hydrate) can be used herein.
  • Another category of bleaching agent that can be used without restriction encompasses percarboxylic acid bleaching agents and salts thereof. Suitable examples of this class of agents include magnesium monoperoxyphthalate hexahydrate, the magnesium salt of metachloro perbenzoic acid, 4-nonylamino-4-oxoperoxybutyric acid and diperoxydodecanedioic acid.
  • Such bleaching agents are disclosed in U.S. Patent 4,483,781, Hartman, issued November 20, 1984, U.S.
  • Highly preferred bleaching agents also include 6-nonylamino-6-oxoperoxycaproic acid as described in U.S. Patent 4,634,551, issued January 6, 1987 to Burns et al.
  • Peroxygen bleaching agents can also be used. Suitable peroxygen bleaching compounds include sodium carbonate peroxyhydrate and equivalent "percarbonate" bleaches, sodium pyrophosphate peroxyhydrate, urea peroxyhydrate, and sodium peroxide.
  • Persulfate bleach (e.g.) OXONE, manufactured commercially by DuPont) can also be used.
  • a preferred percarbonate bleach comprises dry particles having an average particle size in the range from about 500 micrometers to about 1,000 micrometers, not more than about 10% by weight of said particles being smaller than about 200 micrometers and not more than about 10% by weight of said particles being larger than about 1,250 micrometers.
  • the percarbonate can be coated with silicate, borate or water-soluble surfactants.
  • Percarbonate is available from various commercial sources such as FMC, Solvay and Tokai Denka. Mixtures of bleaching agents can also be used.
  • Peroxygen bleaching agents, the perborates, the percarbonates, etc. are preferably combined with bleach activators, which lead to the in situ production in aqueous solution (i.e., during the washing process) of the peroxy acid corresponding to the bleach activator.
  • bleach activators Various nonlimiting examples of activators are disclosed in U.S. Patent 4,915,854, issued April 10, 1990 to Mao et al, and U.S. Patent 4,412,934.
  • NOBS nonanoyloxybenzene sulfonate
  • TAED tetraacetyl ethylene diamine
  • amido-derived bleach activators are those of the formulae: R 1 N(R 5 )C(O)R 2 C(O)L or R 1 C(O)N(R 5 )R 2 C(O)L wherein R 1 is an alkyl group containing from about 6 to about 12 carbon atoms, R 2 is an alkylene containing from 1 to about 6 carbon atoms, R 5 is H or alkyl, aryl, or alkaryl containing from about 1 to about 10 carbon atoms, and L is any suitable leaving group.
  • a leaving group is any group that is displaced from the bleach activator as a consequence of the nucleophilic attack on the bleach activator by the perhydrolysis anion.
  • a preferred leaving group is phenyl sulfonate.
  • bleach activators of the above formulae include (6-octanamido-caproyl)oxybenzenesulfonate, (6-nonanamidocaproyl)oxybenzenesulfonate, (6-decanamido-caproyl)oxybenzenesulfonate, and mixtures thereof as described in U.S. Patent 4,634,551, incorporated herein by reference.
  • Another class of bleach activators comprises the benzoxazin-type activators disclosed by Hodge et al in U.S. Patent 4,966,723, issued October 30, 1990, incorporated herein by reference.
  • a highly preferred activator of the benzoxazin-type is: Still another class of preferred bleach activators includes the acyl lactam activators, especially acyl caprolactams and acyl valerolactams of the formulae: wherein R 6 is H or an alkyl, awl, alkoxyaryl, or alkaryl group containing from 1 to about 12 carbon atoms.
  • lactam activators include benzoyl caprolactam, octanoyl caprolactam, 3,5,5-trimethylhexanoyl caprolactam, nonanoyl caprolactam, decanoyl caprolactam, undecenoyl caprolactam, benzoyl valerolactam, octanoyl valerolactam, decanoyl valerolactam, undecenoyl valerolactam, nonanoyl valerolactam, 3,5,5-trimethylhexanoyl valerolactam and mixtures thereof See also U.S.
  • Patent 4,545,784 issued to Sanderson, October 8, 1985, incorporated herein by reference, which discloses acyl caprolactams, including benzoyl caprolactam, adsorbed into sodium perborate.
  • Bleaching agents other than oxygen bleaching agents are also known in the art and can be utilized herein.
  • One type of non-oxygen bleaching agent of particular interest includes photoactivated bleaching agents such as the sulfonated zinc and/or aluminum phthalocyanines. See U.S. Patent 4,033,718, issued July 5, 1977 to Holcombe et al. If used, detergent compositions will typically contain from about 0.025% to about 1.25%, by weight, of such bleaches, especially sulfonate zinc phthalocyanine.
  • the bleaching compounds can be catalyzed by means of a manganese compound.
  • a manganese compound Such compounds are well known in the art and include, for example, the manganese-based catalysts disclosed in U.S. Pat. 5,246,621, U.S. Pat. 5,244,594; U.S. Pat. 5,194,416; U.S. Pat. 5,114,606; and European Pat. App. Pub. Nos.
  • Preferred examples of these catalysts include Mn IV 2 (u-O) 3 (1,4,7-trimethyl-1,4,7-triazacyclononane) 2 (PF 6 ) 2 , Mn III 2 (u-O) 1 (u-OAc) 2 (1,4,7-trimethyl-1,4,7-triazacyclononane) 2- (ClO 4 ) 2 , Mn IV 4 (u-O) 6 (1,4,7-triazacyclononane) 4 (ClO 4 ) 4 , Mn III Mn IV 4 (u-O) 1 (u-OAc) 2- (1,4,7-trimethyl-1,4,7-triazacyclononane) 2 (ClO 4 ) 3 , Mn IV (1,4,7-trimethyl-1,4,7-triazacyclononane)(OCH 3 ) 3 (PF 6 ), and mixtures thereof.
  • metal-based bleach catalysts include those disclosed in U.S. Pat. 4,430,243 and U.S. Pat. 5,114,611.
  • the use of manganese with various complex ligands to enhance bleaching is also reported in the following United States Patents: 4,728,455; 5,284,944; 5,246,612; 5,256,779; 5,280,117; 5,274,147; 5,153,161; and 5,227,084.
  • compositions and processes herein can be adjusted to provide on the order of at least one part per ten million of the active bleach catalyst species in the aqueous washing liquor, and will preferably provide from about 0.1 ppm to about 700 ppm, more preferably from about 1 ppm to about 500 ppm, of the catalyst species in the laundry liquor.
  • Enzymes can be included in the formulations herein for a wide variety of fabric laundering purposes, including removal of protein-based, carbohydrate-based, or triglyceride-based stains, for example, and for the prevention of refugee dye transfer, and for fabric restoration.
  • the enzymes to be incorporated include proteases, amylases, lipases, cellulases, and peroxidases, as well as mixtures thereof.
  • Other types of enzymes may also be included. They may be of any suitable origin, such as vegetable, animal, bacterial, fungal and yeast origin. However, their choice is governed by several factors such as pH-activity and/or stability optima, thermostability, stability versus active detergents, builders and so on.
  • bacterial or fungal enzymes are preferred, such as bacterial amylases and proteases, and fungal cellulases.
  • Enzymes are normally incorporated at levels sufficient to provide up to about 5 mg by weight, more typically about 0.01 mg to about 3 mg, of active enzyme per gram of the composition.
  • the compositions herein will typically comprise from about 0.001% to about 5%, preferably 0.01%-1% by weight of a commercial enzyme preparation.
  • Protease enzymes are usually present in such commercial preparations at levels sufficient to provide from 0.005 to 0.1 Anson units (AU) of activity per gram of composition.
  • Suitable examples of proteases are the subtilisins which are obtained from particular strains of B. subtilis and B. licheniforms.
  • protease is obtained from a strain of Bacillus, having maximum activity throughout the pH range of 8-12, developed and sold by Novo Industries A/S under the registered trade name ESPERASE. The preparation of this enzyme and analogous enzymes is described in British Patent Specification No. 1,243,784 of Novo.
  • Proteolytic enzymes suitable for removing protein-based stains include those sold under the tradenames ALCALASE and SAVINASE by Novo Industries A/S (Denmark) and MAXATASE by International Bio-Synthetics, Inc. (The Netherlands).
  • Other proteases include Protease A (see European Patent Application 130,756, published January 9, 1985) and Protease B (see European Patent Application Serial No. 87303761.8, filed April 28, 1987, and European Patent Application 130,756, Bott et al, published January 9, 1985).
  • Amylases include, for example, ⁇ -amylases described in British Patent Specification No. 1,296,839 (Novo), RAPIDASE, International Bio-Synthetics, Inc. and TERMAMYL, Novo Industries.
  • the cellulase usable in the present invention include both bacterial or fungal cellulase. Preferably, they will have a pH optimum of between 5 and 9.5. Suitable cellulases are disclosed in U.S.
  • Patent 4,435,307, Barbesgoard et al issued March 6, 1984, which discloses fungal cellulase produced from Humicola insolens and Humicola strain DSM1800 or a cellulase 212-producing fungus belonging to the genus Aeromonas, and cellulase extracted from the hepatopancreas of a marine mollusk (Dolabella Auricula Solander).
  • suitable cellulases are also disclosed in GB-A-2.075.028; GB-A-2.095.275 and DE-OS-2.247.832.
  • CAREZYME Novo is especially useful.
  • Suitable lipase enzymes for detergent usage include those produced by microorganisms of the Pseudomonas group, such as Pseudomonas stutzeri ATCC 19.154, as disclosed in British Patent 1,372,034. See also lipases in Japanese Patent Application 53,20487, laid open to public inspection on February 24, 1978. This lipase is available from Amano Pharmaceutical Co. Ltd., Nagoya, Japan, under the trade name Lipase P "Amano,” hereinafter referred to as "Amano-P.” Other commercial lipases include Amano-CES, lipases ex Chromobacter viscosum, e.g. Chromobacter viscosum var.
  • lipolyticum NRRLB 3673 commercially available from Toyo Jozo Co., Tagata, Japan; and further Chromobacter viscosum lipases from U.S. Biochemical Corp., U.S.A. and Disoynth Co., The Netherlands, and lipases ex Pseudomonas gladioli.
  • the LIPOLASE enzyme derived from Humicola lanuginosa and commercially available from Novo is a preferred lipase for use herein.
  • Peroxidase enzymes are used in combination with oxygen sources, e.g., percarbonate, perborate, persulfate, hydrogen peroxide, etc. They are used for "solution bleaching," i.e.
  • Peroxidase enzymes are known in the art, and include, for example, horseradish peroxidase, ligninase, and haloperoxidase such as chloro- and bromo-peroxidase.
  • Peroxidase-containing detergent compositions are disclosed, for example, in PCT International Application WO 89/099813, published October 19, 1989, by O. Kirk, assigned to Novo Industries A/S.
  • a wide range of enzyme materials and means for their incorporation into synthetic detergent compositions are also disclosed in U.S. Patent 3,553,139, issued January 5, 1971 to McCarty et al. Enzymes are further disclosed in U.S.
  • detergent compositions include chelating agents, soil release agents, soil antiredeposition agents, dispersing agents, suds suppressors, fabric softeners, dye transfer inhibition agents and perfumes.
  • a packaging system may be formed from a sheet of flexible material.
  • Materials suitable for use as a flexible sheet include mono-layer, co-extruded or laminated films.
  • Such films may comprise various components, such as poly-ethylene, poly-propylene, poly-styrene, poly-ethylene-terephtalate.
  • the packaging system is composed of a poly-ethylene and bi-oriented-poly-propylene co-extruded film with an MVTR of less than 1 g/day/m 2 .
  • the MVTR of the packaging system is preferably of less than 10 g/day/m 2 , more preferably of less than 5 g/day/m 2 , even more preferably of less than 1 g/day/m 2 and most preferably of less than 0.5 g/day/m 2 .
  • the film (2) may have various thicknesses. The thickness should typically be between 10 and 150 ⁇ m, preferably between 15 and 120 ⁇ m, more preferably between 20 and 100 ⁇ m, even more preferably between 25 and 80 ⁇ m and most preferably between 30 and 40 ⁇ m.
  • a packaging material preferably comprises a barrier layer typically found with packaging materials having a low oxygen transmission rate, typically of less than 300 cm 3 /m 2 /day, preferably of less than 150 cm 3 /m 2 /day, more preferably of less than 100 cm 3 /m 2 /day, even more preferably of less than 50 cm 3 /m 2 /day and most preferably of less than 10 cm 3 /m 2 /day.
  • Typical materials having such barrier properties include bi oriented polypropylene, poly ethylene terephthalate, Nylon, poly(ethylene vinyl alcohol) , or laminated materials comprising one of these, as well as SiOx (Silicium oxydes), or metallic foils such as aluminium foils for example.
  • Such packaging material may have a beneficial influence on the stability of the product during storage for example.
  • the packing method used are typically the wrapping methods disclosed in WO92/20593, including flow wrapping or over wrapping.
  • a longitudinal seal is provided, which may be a fin seal or an overlapping seal, after which a first end of the packaging system is closed with a first end seal, followed by closure of the second end with a second end seal.
  • the packaging system may comprise re-closing means as described in WO92/20593. In particular, using a twist, a cold seal or an adhesive is particularly suited.
  • a band of cold seal or a band of adhesive may be applied to the surface of the packaging system at a position adjacent to the second end of the packaging system, so that this band may provide both the initial seal and re-closure of the packaging system.
  • the adhesive or cold seal band may correspond to a region having a cohesive surface, i.e. a surface which will adhere only to another cohesive surface.
  • Such re-closing means may also comprise spacers which will prevent unwanted adhesion. Such spacers are described in WO 95/13225, published on the 18 th of May 1995. There may also be a plurality of spacers and a plurality of strips of adhesive material.
  • a cold seal may be used, and in particular a grid of cold seal, whereby the cold seal is adapted so as to facilitate opening of the packaging system.
  • base particulate material composition for making laundry detergent tablets according to the invention, whereby the fluorescer or brightener is preferably concentrated in a first layer, the Zinc Phthalocyanide sulphonate being preferably concentrated in the other.
  • any of these compositions could be used, whereby all of the brightener is located in one layer, the Zinc Phthalocyanide sulphonate being in the other.
  • Other proportions between the layers may be used according to the invention.
  • a tablet with a single layer and coloured with the Zinc Phthalocyanide sulphonate may also be provided using the following composition, by spraying the Zinc Phthalocyanide sulphonate onto the matrix, preferably together with the binder.
  • Composition A (% per weight) Anionic Agglomerates 1 21.45 Anionic Agglomerates 2 13.00 Cationic Agglomerate 5.45 Layered Silicate 10.8 Sodium percarbonate 14.19 Bleach activator agglomerates 5.49 Sodium carbonate 13.82 EDDS/Sulphate particle 0.47 Tetrasodium salt of Hydroxyethane Diphosphonic acid 0.73 Soil Release Polymer 0.33 Fluorescer 0.18 Zinc Phthalocyanide sulphonate 0.025 Soap powder 1.40 Suds Suppressor 1.87 Citric acid 7.10 Protease 0.79 Lipase 0.28 Cellulase 0.22 Amylase 1.08 Binder Spray-on-system 1.325 TOTAL 100.00

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EP98870239A 1998-11-05 1998-11-05 Farbige Tablette Withdrawn EP0999261A1 (de)

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EP98870239A EP0999261A1 (de) 1998-11-05 1998-11-05 Farbige Tablette
BR9915061-1A BR9915061A (pt) 1998-11-05 1999-10-27 Tablete colorido
CZ20011302A CZ20011302A3 (cs) 1998-11-05 1999-10-27 Detergentní tableta a způsob výroby
PCT/US1999/025223 WO2000027989A1 (en) 1998-11-05 1999-10-27 Coloured tablet
EP99971843A EP1124934A1 (de) 1998-11-05 1999-10-27 Farbige tablette
AU12372/00A AU1237200A (en) 1998-11-05 1999-10-27 Coloured tablet
JP2000581156A JP2002529586A (ja) 1998-11-05 1999-10-27 着色錠剤
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WO2008000563A1 (de) * 2006-06-27 2008-01-03 Henkel Ag & Co. Kgaa Heterogene wasch- oder behandlungsmittelportion
US10260025B2 (en) 2008-02-11 2019-04-16 Ecolab Usa Inc. Use of activator complexes to enhance lower temperature cleaning in alkaline peroxide cleaning systems

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JP4925300B2 (ja) * 2007-02-01 2012-04-25 四国化成工業株式会社 塩素化イソシアヌル酸錠剤
JP4925308B2 (ja) * 2007-03-09 2012-04-25 四国化成工業株式会社 錠剤型洗浄剤

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EP0224128A2 (de) * 1985-11-21 1987-06-03 Henkel Kommanditgesellschaft auf Aktien Mehrschichtige Reinigungsmitteltabletten für das maschinelle Geschirrspülen
EP0481793A1 (de) * 1990-10-19 1992-04-22 Unilever Plc Detergenszusammensetzungen in Tablettenform
WO1997003177A1 (de) * 1995-07-13 1997-01-30 Joh. A. Benckiser Gmbh Geschirrwaschmaschinenspülmittel in form einer tablette
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JPS5077406A (de) * 1973-11-12 1975-06-24
US4217105A (en) * 1977-03-28 1980-08-12 The Procter & Gamble Company Photoactivated bleach-compositions and processes
EP0224128A2 (de) * 1985-11-21 1987-06-03 Henkel Kommanditgesellschaft auf Aktien Mehrschichtige Reinigungsmitteltabletten für das maschinelle Geschirrspülen
EP0481793A1 (de) * 1990-10-19 1992-04-22 Unilever Plc Detergenszusammensetzungen in Tablettenform
WO1997003177A1 (de) * 1995-07-13 1997-01-30 Joh. A. Benckiser Gmbh Geschirrwaschmaschinenspülmittel in form einer tablette
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Publication number Priority date Publication date Assignee Title
WO2008000563A1 (de) * 2006-06-27 2008-01-03 Henkel Ag & Co. Kgaa Heterogene wasch- oder behandlungsmittelportion
US10260025B2 (en) 2008-02-11 2019-04-16 Ecolab Usa Inc. Use of activator complexes to enhance lower temperature cleaning in alkaline peroxide cleaning systems

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BR9915061A (pt) 2001-07-31
AU1237200A (en) 2000-05-29
WO2000027989A1 (en) 2000-05-18
KR20010075683A (ko) 2001-08-09
AR021103A1 (es) 2002-06-12
JP2002529586A (ja) 2002-09-10
EP1124934A1 (de) 2001-08-22
CN1333816A (zh) 2002-01-30
CA2347791A1 (en) 2000-05-18
CZ20011302A3 (cs) 2002-05-15

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