JP2002520479A5 - Multi-phase washing tablets for dishwashers or washing machines - Google Patents

Description

[Claims]
    (1) For dishwasher or washing machineManyphaseA cleaning tablet,
  a)A first phase having a weight of at least 3 g,At least one moldThe surfaceToAnd 500-1500kg / cm ² In the form of a compression molded article prepared at a compression pressure ofFirstphase;as well as
  b)A second phase weighing 0.1-1.3 g, comprising 40-300 kg / cm ² Compressed at a pressure ofIncluded in the moldToCompressed bodyAnd in the form of solid particlesSecondphase
ToIncluding
  SaidtabletBut1KindIncluding the above active cleaning agent,The first and / or second phase comprises a binder,SecondPhaseBursting agentfurtherIncludingThe tablet is such that the phase-dependent dissolution occurs during use.tablet.
    (2) The first phase and the second phase are in a weight ratio of at least 6: 1.Claim 1For dishwasher or washing machineManyphaseWash tablets.
    (3) 2. The dishwasher or washing machine according to claim 1, wherein the first phase and the second phase are in a weight ratio of at least 10: 1.ManyphaseWash tablets.
    (4) The one or more active detergents are selected from enzymes, bleaches, bleach activators, bleach catalysts, surfactants, chelating agents, crystal growth inhibitors and mixtures thereof.Any of claims 1 to 3oneSectionFor dishwasher or washing machineManyphaseWash tablets.
    Claim 5. The one or more active detergents are selected from builders, colorants, surfactants, enzymes, binders, bleaches and bleach activators.Claim 13Any ofoneSectionFor dishwasher or washing machineManyphaseWash tablets.
    6. The dishwasher or washing machine according to any one of claims 1 to 5, wherein the bursting agent is selected from a crushing agent, a foaming agent, and a mixture thereof.ManyphaseWash tablets.
    7. The binder is selected from the group consisting of sugars and sugar derivatives, starch and starch derivatives, inorganic and organic polymers.Any of claims 1 to 6oneSectionFor dishwasher or washing machineManyphaseWash tablets.
    Claim 8. The mold has an inwardly concave surfaceAny of claims 1 to 7oneSectionFor dishwasher or washing machineManyphaseWash tablets.
    9. At least 50% by weight, based on the total weight of the active detergent in the tablet, of the one or more active detergents is in the second phase.Any of claims 1 to 8oneSectionFor dishwasher or washing machineManyphaseWash tablets.
    10. 10. A machine dishwashing or laundry washing method, comprising supplying one or more multi-phase washing tablets for a dishwasher or washing machine according to any one of claims 1 to 9 to the dishwasher or washing machine.
    11. The method according to claim 10, which is a method for cleaning soiled articles selected from pottery, glassware, silverware, metalware, cutlery and mixtures thereof.

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to multi-phase cleaning tablet dishwasher or washing machine.

Multiphase washing tablet according to the prior art, first by the first composition tablet was compressed in a press forming a substantially planar first layer, then further detergent composition is fed to the tablet press 1 Add on top of layer. The second composition is then prepared by compressing to form another substantially planar second layer. Thus, the first layer is also subjected to one or more compressions, as it is also compressed during the compression of the second composition. Usually, the first and second compression forces are of the same magnitude. Applicants believe that the compression pressure must be sufficient to bond the first and second compositions together, so that the force used in both the first and second compression steps is between about 4,000 and about 20 , that it must be a range of 000 k g (tablets sectional assume about 10 cm ²⁾ were found to be actual situation. This results in slow dissolution of the tablet. Other multi-phase tablets show a dissolution with a difference is prepared by compressing the second layer at a pressure lower than the first layer. However, while the dissolution rate of the second layer is improved, the second layer is softer than the first layer and is therefore less susceptible to damage caused by handling and transport.

[0007]
[Means for Solving the Problems]
According to the onset bright, a multi-phase cleaning tablet dishwashing machine or washing machine,
a first phase having a weight of a) at least 3g, possess on the surface at least one type, the first phase in the form of compacts prepared at a compaction pressure of 500~1500kg / cm ² And b) a second phase having a weight of 0.1 to 1.3 g, which is compressed at a pressure of 40 to 300 kg / cm ² and is in the form of a pressed body adhered and contained in said mold ; Said second phase formed from solid particles ,
The tablet comprises one or more active detergents; the first and / or second phase comprises a binder; the second phase further comprises a bursting agent; Such a tablet is provided that is as occurs in.

In a preferred embodiment, the first phase, preferably a compression molded body that is prepared by applying a compression pressure of about 600 to about 1200 k g / cm ² (here, the compaction pressure, the applied force, Tablet cross-section on a plane perpendicular to the applied force, effectively divided by the cross-sectional area of the rotary press die). Solid particles of the second phase (which term here is sometimes intended to encompass the possibility of multiple 'second' phases referred to as "optional additional phase") is good Mashiku about 70 to about compressed in the mold at a compression pressure of 270 k g / cm ^2, such tablets, maximum integrity and strength of the tablet (e.g., as measured by the child byte strength [CBS] test method) and product dissolution It is preferable in that it provides characteristics. The present invention tablets preferably CBS of at least about 6 k g, preferably greater than about 8 k g, greater than more preferably about 10 k g, especially greater than about 12 k g, more particularly from about 14 k g Is preferred. CBS is measured by the U.S. Product Safety Commission test standards. Also, the ratio of compression pressure applied to the first and second phases is usually at least about 1.2: 1, preferably at least about 2: 1, and more preferably about 4: 1 .

In another preferred embodiment, the second phase is in a compacted or compacted form, for example, physically or chemically bonded, and contained in at least one mold of the first phase . It is preferred that the first and second phases is a relatively high weight ratio to one another, for example at least about 6: 1, preferably at least about 10: 1; The tablet composition is mainly concentrated in the second phase About 50% by weight, preferably at least about 60% by weight, especially about 80% by weight (based on the total amount of active ingredients in the tablet) of active detergents (eg enzymes, bleaches, bleach activators, bleaching) (A catalyst, a surfactant, and a chelating agent). Such compositions are also optimal for imparting tablet strength, solubility, detergency, and pH controllability, for example, the tablet composition dissolves in the washing solution and is at least 50% by weight, preferably at least 60%, more preferably Can dissolve at least 80% by weight of the active detergent in the washing solution within 10 minutes, 5 minutes, 4 minutes or even 3 minutes after the start of washing.

Thus, according to another aspect of the present invention, the tablet comprises at least one active detergent, and least 50% by weight of the active detergent, preferably at least 60 wt%, more preferably at least 80 wt% Is provided in the cleaning solution within the first 10 minutes of the washing step, preferably within the first 5 minutes, more preferably within the first 3 minutes.

Additional benefits of the present invention is the ability to achieve solubility of differences in multiple phases, one phase of the tablet dissolves significantly faster than the other phases, essentially before the other phase has dissolved Dissolve completely in This is valuable in making a difference in the supply of active cleaning agents.

Accordingly, in another aspect of the present invention, the tablet contains active detergent which is mainly concentrated in the second phase comprises one or more, and, the second phase additionally comprises a rupturing agent.

In a further aspect of the present invention, the tablet comprises mainly concentrated activity detergent to the second phase 1 or more, and, the second phase additionally comprises a binder.

[0016]
(Detailed Description of the Invention)
[Problems to be solved by the invention]
It is an object of the present invention to provide a cleaning tablet that is not only strong enough to withstand handling and transport, but also the active part of the cleaning tablet described below, which dissolves quickly in the cleaning liquid and quickly supplies the active cleaning agent. Aim. It is preferred that at least one phase of the tablet dissolves in the wash liquor within the first 10 minutes, preferably within 5 minutes, more preferably within 4 minutes of the automatic dishwasher or washing machine washing cycle. Preferably , the washing machine is an automatic dishwasher or washing machine. Multiphase tablets or time the phase or active detergent is dissolved is a sufficient number of times to ensure repetitive or reproducibility of a minimum of 6 times, with water hardness of 18 ° H, an ordinary 65 ° C. wash program, Determined according to DIN 44990 using a dishwasher commercially available from Bosch.

Multiphase washing tablets of the present invention, the first phase, and a second phase and optional additional phase. The first phase is a shaped detergent composition containing one or more detergent components described below. Preferred detergent compositions include builders, bleaches, enzymes, surfactants. The components of the detergent composition are mixed together, for example, by mixing dry components or spraying on liquid components. The components are formed into a first phase using any suitable equipment, but are preferably formed by compression, such as a tablet press . The first phase can take a variety of geometric forms, such as spheres, cubes, etc., but the preferred embodiment is generally axially symmetric and has a generally circular, square, or rectangular cross section.

The first phase is prepared as a compact with at least one mold in the surface. Single or multiple molds also vary in size and shape and their location, placement and topology for the first phase . For example, the mold or molds are usually circular, square or oval in cross-section; they can form internal closed cavities, ie, depressions, in the molding surface or are connected to the molding surface. One or more topological "holes" can be formed that extend to non-existing regions (e.g., axially opposed surfaces); they can be axially or symmetrically arranged relative to the first phase , or asymmetrically arranged. Is done. -Type In a preferred embodiment, the surface of the punch that contacts the detergent composition, upon contact with the detergent compositions compression, to the first phase of the multi-phase detergent specifically designed to form a single or multiple type tablet Formed using a press. Preferably , the mold has an inwardly concave surface, i.e., typically a concave surface, to improve adhesion to the second phase . Alternatively, the mold compresses a preform body of the detergent composition disposed annularly around the central die to form a molded body having a mold in the form of a cavity extending axially between opposing surfaces of the molded body. Can be manufactured.

The multiphase washed tablet of the present invention also contains one or more additional phases prepared from a composition containing one or more detergent components described below. The at least one phase (herein referred to as the second phase ) preferably comprises a particulate solid (this term includes powders, granules, agglomerates and mixtures thereof with liquid binders, meltable solids, spray-ons, etc.). in the form of the form of other particulate solids), second phase is also of its compressed within the one or more types of first phase of the cleaning tablets take the form of a shaped body. Optional additional phases include one or more compositions in the form of discrete single or multiple layers. Preferred detergent components include builders, colorants, binders, surfactants, rupture agents, and enzymes, especially amylase and protease enzymes.

In another preferred aspect of the present invention, the second phase and optional additional phase contain a bursting agent selected from either grinding or foaming agents. Preferred grinding agents include those agents that swell on contact with water or form channels in the wash tablet to promote inflow and / or outflow of water. Any known grinding or effervescent agents for laundry or dishwashers can be used in the present invention. Suitable grinding agents include starch (such as natural starch, modified starch, and pregelatinized starch, such as corn, rice and potato starch), USperse®, Primojel® and Explotab® Such starch derivatives, cellulose, microcrystalline cellulose and both Arbocel (trade name) and Vivapur (trade name) are available from Rettenmaier, Nymcel (trade name) available from Metsa-serla, Avicel (trade name), LatticeNT (trade name) Derivatives such as Afg. And Hanfloc (trade name), alginate, acetic acid trihydrate, burkeite, formula Na ₂ CO ₃ . Of H ₂ O monohydrate carbonates, first phase content of at least about 40% hydration STPP, carboxymethyl cellulose (CMC), CMC-based polymers, sodium acetate, aluminum oxide. Preferred rupture agents are those that produce gas on contact with water. Preferred bursting agents are oxygen, nitrogen dioxide or carbon dioxide generator species. Examples of preferred bursting agents are selected from the group consisting of perborates, percarbonates, bicarbonates and combinations with carboxylic acids or other acids such as citric acid, sulfamic acid, oxysuccinic acid or maleic acid. .

The components of the detergent composition are mixed together, for example, by mixing the dry components and mixing or spraying on the liquid components. The components of the second phase and optional additional phases are then fed and maintained in the mold provided by the first phase .

A preferred embodiment of the present invention comprises two phases, a first phase and a second phase . The first phase usually contains one mold and the second phase usually consists of a single active detergent composition. However, it is also contemplated that the first phase contains multiple molds and the second phase is prepared from more than one type of active detergent. It is further contemplated that the second phase contains a plurality of active cleaning compositions contained in one mold. It is also contemplated that several active cleaning compositions may be included in separate molds. In this way, potentially chemically sensitive detergent components can be separated in order to avoid a performance penalty caused by the components reacting with each other and inactivating or depleting.

Oite this onset bright, first phase, second phase and / or optional additional phase contains a binder. Bas Indah are those organic polymers such as polyethylene glycol and / or polypropylene glycol, in particular the molecular weight of 4000, 6000 and 9000, paraffins, polyvinyl pyrrolidone (PVP), especially having a molecular weight of 90000 PVP, polyacrylate, sugar and sugar derivatives, starch And starch derivatives such as hydroxypropylmethylcellulose (HPMC) and carboxymethylcellulose (CMC); and inorganic polymers such as hexaimetaphosphate. The binder is valuable to achieve both of the dissolution with the difference between the first and second phases of integrity and later tablet.

Oite this onset Ming, the first phase heavier than the weight of about 3g, heavier than preferably about 4g, more preferably heavier than about 5g. More preferably, the first phase is from about 10 g to about 30 g, even more preferably from about 15 g to about 25 g, and most preferably from about 18 g to about 24 g. The second phase and optional additional phases weigh from about 0.1 g to about 1.3 g .

In another aspect of the present invention, the barrier phase containing barrier phase composition, either present between the first and second phases and / or optional additional phase, optional additional second phase Exists between the phases . The barrier phase composition contains at least one binder selected from the group described above. The advantage of the presence of the barrier phase is to prevent or reduce the migration of components from one phase to the other, for example vice versa, but from the first phase to the second phase and / or any additional phases . That is.

The components of the second phase and optional additional phases are preferably compressed at a very low compression pressure compared to the compression pressures normally used for preparing tablets. Thus, an advantage of the present invention is that heat, power, and chemically sensitive detergent compositions, because low compression pressures are used, typically provide the performance that is encountered by incorporating such ingredients into tablets. Can be contained in a washed tablet without suffering any damage caused by the compression .

A further advantage of the present invention is the improved protection of the second phase against damage caused, for example, by handling and transport. Multiphase washing tablet as described above, the second phase is compressed prepared at a lower compression pressure than the first phase. However, although the dissolution rate is improved, the second phase of these tablets is vulnerable to damage, brittle, and prone to chipping upon contact. The lightly compressed layer of the cleaning tablet of the invention, however, is protected in the mold provided by the first phase of the cleaning tablet.

Furthermore, another advantage of the present invention, one phase, preferably the ability to prepare a multi-phase cleaning tablets are designed to dissolve significantly faster than the other phase. According to the invention, it is preferred that the second phase and optional additional phases dissolve before the first phase . According to the preferred weight ranges described above, it is preferred that the first phase dissolves in 5 to 20 minutes, more preferably 10 to 15 minutes, the second phase and / or optional additional phase in less than 5 minutes, More preferably it dissolves in less than 4.5 minutes, most preferably in less than 4 minutes . The time for the first, second and / or optional additional phases to dissolve is independent of each other. Accordingly, a particularly preferred aspect of the present invention is that dissolution with a phase difference can be achieved. Specific benefits to achieve the dissolution of the difference between the multi-phase cleaning tablets is that it can be separated into different phases ingredients that are chemically inactivated by the presence of other ingredients. In this case, the component to be inactivated is preferably present in the second phase and optionally an additional phase .

Yet another advantage of the present invention is that the adhesion between phases of multiphase tablets was improved. Improved adhesion is achieved by reducing exposure of the second phase in comparison to multi-phase tablets known in the art, the present invention tablets are made less susceptible to fracture along the line of contact between the phases .

(Production method)
Multiphase washing tablets can be prepared using any suitable tabletting equipment, eg Courtoy R253. Preferably, tablets can be prepared by compression in a tablet press that allows the preparation of tablets containing the mold. In a particularly preferred embodiment of the invention, the first phase is prepared using a specially designed tablet press according to the procedure described below. In this tablet press, the punch is modified so that the surface of the punch in contact with the cleaning composition has a concave surface.

The first cleaning composition is fed to a tablet press die and the punch is lowered to contact the cleaning composition, after which the cleaning composition is compressed to form a first phase . The first detergent composition is from about 500 to about 1500 k g / cm ^2, good Mashiku is compressed using application pressures of about 600 to about 1200 k g / cm ^2, containing type raise punch Expose the first phase . The second phase detergent composition and optional additional detergent composition are then fed into the mold. The specially designed tablet press is then lowered a second time and the second phase detergent composition and any additional detergent compositions are lightly compressed to form the second phase and any additional phases . In other aspects of the invention where an optional additional phase is present, the optional additional phase is prepared in an optional additional compression step substantially similar to the second compression step described above. Second phase and optional additional phase can be about 40 to about 300 k g / cm ^2, good Mashiku is compressed at a pressure of about 70 to about 270 k g / cm ^2. After compression of the second detergent composition, raising the punch a second time, take out the multi-phase cleaning tablets from the tablet press.

(Detergent composition)
Here the first phase of the multi-phase cleaning tablets described in and second phase and / or optional additional phase can be prepared by compression of one or more compositions containing the active detergent ingredients. Preferably, the composition used for these phases is an organic polymer comprising a builder compound, a surfactant, an enzyme, a bleach, an alkaline source, a colorant, a fragrance, a lime soap dispersant, a polymeric dye transfer inhibitor. Different detergent compositions including soluble compounds, crystal growth inhibitors, heavy metal ion sequestering agents, metal ion salts, enzyme stabilizers, corrosion inhibitors, foam control agents, solvents, fabric softeners, optical brighteners and hydrotropes May be contained.

Highly preferred detergent components of the first phase include builder compounds, surfactants, enzymes and bleaches. Highly preferred detergent components of the second phase include builders, enzymes, crystal growth inhibitors and bursting agents and / or builders.

(enzyme)
Enzyme Phase 1 and still more preferred detergent components of the second phase and / or optional additional phase. In case of containing enzyme, the enzyme, cellulase, hemicellulase, peroxidases, proteases, glucoamylases, amylase, xylanase, lipase, phospholipase, esterases, cutinases, pectinases, keratanases, Redokutaze, oxidases, phenol oxidases, Ribokishigenaze , Ligninase, pullulanase, tannase, pentosanase, malanase, β-glucanase, arabinosidase, hyaluronidase, chondroitinase, laccase or a mixture thereof.

The first phase and / or the second phase and / or the optional additional phase comprise a colorant, a mixture of colorants, colored particles or a mixture of colored particles, such that the various phases have different visual appearances. It may be. Preferably it is preferred that one of the first phase or the second phase contains a colorant. It is also preferred that both the first phase and the second phase and / or the additional phase contain a colorant, which has a different visual appearance.

Colorant can be contained in a suitable manner to the respective phases. Suitable methods include mixing all or part of the detergent component with the colorant in a drum, or spraying all or part of the detergent component and the colorant in a rotating drum.

When the colorant is present as a component of the first phase , it is present at a concentration of 0.001 to 1.5%, preferably 0.01 to 1.0%, most preferably 0.1 to 0.3%. When present as a component of the second phase and / or optional additional phase , the colorant is 0.001-0.1%, more preferably 0.005-0.05%, and most preferably 0.007-0. 0.02%.

(Mechanical dishwashing method)
Dirty any machine washing or chestnut over training methods tableware are contemplated.
A preferred mechanical dishwashing method is to treat a dirty article selected from pottery, glass tableware, silver tableware , metal products and cutlery and mixtures thereof with an aqueous liquid in which an effective amount of the cleaning tablet of the present invention is dissolved or dispersed. It consists of doing. An effective amount of a cleaning tablet refers to the dissolution of a typical product application volume of 8-60 g of product in a cleaning solution volume of 3-10 liters, which is a cleaning solution volume commonly used in conventional mechanical dishwashing methods. Or dispersed. Preferably, the washed tablets weigh 15 to 40 g, more preferably 20 to 35 g.

In the following examples, all concentrations are by weight of the composition.
(Example I- VI )
Next, examples of the cleaning tablet of the present invention suitable for use in a dishwasher will be described.

Multiphase tablet compositions are prepared as follows. The first phase active detergent composition is prepared by mixing the granular and liquid ingredients and passing through a conventional rotary press die. The press has a punch of a shape suitable for forming a mold. The cross-sectional area of the die is about 30 × 38 mm. Then subjected composition to the compression pressure 940 k g / cm ^2, then raise the punch to expose the first phase of the tablet containing the mold in its upper surface. The active detergent composition of the second phase is prepared in an analogous manner, after supplied into the mold, subjected to compression pressure 170 k g / cm ^2, increasing the punch, take out the multi-phase tablet from the tablet press. The resulting tablet dissolves or disintegrates in the dishwasher described above within 12 minutes, and the second phase of the tablet dissolves within 5 minutes. Tablets provide excellent dissolution and cleaning properties, along with good tablet integrity and strength.