Laundry treatment agent system and method for producing the laundry treatment agent system

A block-shaped laundry treatment system with hydrogen peroxide carrier and bleach activator components addresses the issues of clumping and transport inefficiency in powdered agents, offering adaptable, high-performance detergents with minimal components and efficient packaging.

EP4729595A1Pending Publication Date: 2026-04-22MIELE & CO KG
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Patent Information

Authority / Receiving Office
EP · EP
Patent Type
Applications
Current Assignee / Owner
MIELE & CO KG
Filing Date
2025-10-07
Publication Date
2026-04-22

AI Technical Summary

Technical Problem

Powdered laundry treatment agents are hygroscopic, tend to clump, and offer no significant advantage over liquid agents during transport due to their bulk density, lacking in compact form and adaptability, which complicates shipping and packaging.

Method used

A multi-component laundry treatment system comprising block-shaped components, each containing a hydrogen peroxide carrier and a bleach activator, with optional fragrance and fabric softener, allowing for high cleaning and bleaching performance while being compact and adaptable in size and shape, preventing clumping and leakage.

Benefits of technology

The system provides stable, high-performance detergents suitable for various laundry types, easy to ship and package, with minimal components and efficient use of resources, ensuring effective cleaning and bleaching without clumping.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a laundry treatment system comprising a first component (1) with a hydrogen peroxide carrier and a second component (2) with a bleach activator, wherein the first component (1) is configured as a first block-shaped laundry treatment agent and the second component (2) is configured as a second block-shaped laundry treatment agent. The invention further relates to a method for producing the laundry treatment system, comprising compacting ingredients of the first component (1) to produce the first block-shaped laundry treatment agent, and compacting ingredients of the second component (2) to produce the second block-shaped laundry treatment agent.
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Description

[0001] The invention relates to a laundry treatment system and a method for producing the laundry treatment system. Liquid laundry treatment agents generally contain larger quantities of water. While powdered laundry treatment agents do not contain water, their bulk density is usually only 600 to 800 g / l. Therefore, powdered laundry treatment agents offer no real advantage over liquid laundry treatment agents, at least during transport. However, since bleaching agents can be stably incorporated into powdered laundry treatment agents, which is only possible with separate dosing in liquid laundry treatment agents, powdered laundry treatment agents offer performance advantages. But powdered laundry treatment agents are often hygroscopic and tend to clump.

[0002] The invention thus addresses the problem of providing a laundry treatment agent and a method for producing the laundry treatment agent that requires as few components as possible to perform the cleaning tasks with high cleaning, bleaching, and hygiene performance, and has a compact form for transport and minimal packaging. Furthermore, its size and shape should be easily adaptable, and it should be easy to ship.

[0003] According to the invention, this problem is solved by a laundry treatment agent system with the features of claim 1 and a method for producing the laundry treatment agent system with the features of claim 10. Advantageous embodiments and further developments of the invention are described in the respective dependent claims.

[0004] The advantages achievable with the invention, besides providing a multi-component system for block-shaped laundry treatment agents, lie in the fact that all cleaning tasks can be accomplished with just a few components. The block form prevents excessive soaking, as would be the case with a powder. The first and second components are each compact and can be supplied in any desired shape. The size and shape are therefore easily adaptable, allowing for coding to prevent mix-ups. Unlike liquid products, the laundry treatment agent system can be advantageously packaged with minimal effort, for example, in a simple film or cardboard box. This makes it easy to ship. Leakage is impossible; rather, it is stable during storage and can even be sent by letterbox. This saves water, solvents, and other additives.Because it is highly concentrated, it can be used in low doses. It achieves high cleaning, bleaching, and hygiene performance.

[0005] To accomplish all cleaning tasks, the first and second components are required. The density of the powdered laundry treatment agent, in the form of the first and / or second component, is increased through compaction, resulting in block-like forms. When the first and second components are dosed together into the tub of a washing machine, a complete detergent with very good bleaching and hygiene performance is created. If only the first component, i.e., not the second component, is dosed into the tub, a complete detergent with low bleaching and satisfactory hygiene performance is created, suitable, for example, for colored laundry. If only the second component, and not the first, is dosed into the tub, a detergent for colored and delicate fabrics is created, which, depending on the dosage, is also suitable for sensitive textiles such as wool and silk.Using the first and second components, all common detergents can be represented. The detergent concentration can be determined, for example, by measuring the conductivity in the washing machine.

[0006] The invention relates to a laundry treatment agent system comprising a first component with a hydrogen peroxide carrier and a second component with a bleach activator, wherein the first component is designed as a first block-shaped laundry treatment agent and the second component is designed as a second block-shaped laundry treatment agent.

[0007] In a preferred embodiment, the first component and / or the second component each further comprise a builder, a surfactant, an enzyme, and / or a performance polymer. This further enhances the cleaning performance of the first component and / or the second component, respectively. More preferably, the first component and the second component each further comprise a builder, a surfactant, an enzyme, and / or a performance polymer or polymer.

[0008] Preferably, the first and / or second component contains a builder. A builder, also called a scaffold, serves to inhibit the formation of calcite crystals, which can damage the fabric being washed, and further enhances the washing performance. Preferably, the builder is selected from the group consisting of zeolite, citrate, aminocarboxylate, phosphonate, and / or biopolymer.

[0009] Preferably, the first and / or second component contains a surfactant. The surfactant further serves to increase the washing power. Preferably, the surfactant is selected from the group consisting of anionic, nonionic, amphoteric, and / or cationic surfactants.

[0010] Preferably, the first and / or second component contains an enzyme. The enzyme is selected to break down contaminants of biological origin and / or remove cotton pilling. Preferably, the enzyme is selected from the group consisting of protease, amylase, lipase, mannase, and / or cellulase.

[0011] Preferably, the first and / or second component contains a performance polymer or polymer. Preferably, the performance polymer is selected from the group consisting of performance polymers for preventing color transfer and / or performance polymers for preventing dirt transfer.

[0012] In a preferred embodiment, the first component and / or the second component each further contain an optical brightener, a processing aid, a tracer for concentration determination, and / or a dye. This further optimizes the cleaning performance.

[0013] The preferred hydrogen peroxide carrier is percarbonate or urea peroxide. The percarbonate is preferably sodium percarbonate, which is a solid H₂O₂ adduct. Sodium percarbonate is a bleaching and detergent agent. Urea-hydrogen peroxide is a solid that can be used as a source of anhydrous hydrogen peroxide and as a bleaching disinfectant.

[0014] The preferred bleach activator is TAED (tetraacetylethylenediamine). TAED acts as an activator for bleaching and detergents.

[0015] In a preferred embodiment, the laundry treatment system further comprises a third component, which is designed as a block-shaped fragrance and / or fabric softener. This provides, in addition to the detergents described above in the form of heavy-duty, color, and delicate detergents, a laundry aid in the form of the fragrance and / or fabric softener.

[0016] Alternatively or additionally, the laundry treatment system further comprises a fourth component, which includes a hydrogen peroxide carrier and a bleach activator and is designed as a fourth block-shaped laundry treatment agent. This ensures that the detergent is still provided as a separate component from the first and second components.

[0017] In a preferred embodiment, the first, second, third, and / or fourth component has a shape that distinguishes it from the other components of the first, second, third, or fourth group. This provides a component coding and minimizes the risk of confusion.

[0018] Preferably, the ingredients of the first, second, and third components are present as a compacted dry powder or granules. That is, each component consists of a powder or granules made up of its respective ingredients, compacted into a block.

[0019] The invention further relates to a method for producing a laundry treatment agent system according to one or more of the embodiments described above, comprising compacting ingredients of the first component so that the first component is produced as a first block-shaped laundry treatment agent, and compacting ingredients of the second component so that the second component is produced as a second block-shaped laundry treatment agent.

[0020] In a preferred embodiment, the compaction process involves compression or extrusion. A casting process or another compacting and shaping method is also possible.

[0021] The third and / or fourth components are also produced by compacting their respective ingredients.

[0022] An embodiment of the invention is shown schematically in the drawings and is described in more detail below. It is shown schematically and not to scale. Fig. 1 a cross-sectional view of a laundry treatment system according to the invention when used in a washing machine.

[0023] Fig. 1Figure 1 shows a cross-sectional view of a laundry treatment system according to the invention when used in an automatic washing machine, of which only a portion is shown. The laundry treatment system comprises a first component 1 with a hydrogen peroxide carrier and a second component 2 with a bleach activator. Optionally, it further comprises a third component 3, which is designed as a block-shaped fragrance and / or fabric softener. The first component 1 is designed as a first block-shaped laundry treatment agent. The second component 2 is designed as a second block-shaped laundry treatment agent.The first component 1 and / or the second component 2 may each further comprise a builder such as zeolite, citrate, aminocarboxylate, phosphonate and / or biopolymer, a surfactant such as an anionic, nonionic, amphoteric and / or cationic surfactant, an enzyme such as protease, amylase, lipase, mannase and / or cellulase, and / or a performance polymer such as a performance polymer to prevent color transfer and / or a performance polymer to prevent soil transfer. Furthermore, the first component 1 and / or the second component 2 may each further comprise an optical brightener, a processing aid, a tracer for concentration determination, and / or a dye.

[0024] The washing machine has a water inlet 7, a drawer 6, a feed mechanism 5, and spatial dividers 9. During operation, the water inlet 7 sprays water 8 onto the second component 2 during a dosing process, forming washing liquid 10, which flows into a tub (not shown) of the washing machine to enable the washing of laundry (not shown). The water inlet 7 is movable, as indicated by the arrows, so that it can also spray water onto the first component 1 or the third component 3. The dividers 9 allow for individual spraying of the desired components 1, 2, and 3. The feed mechanism 5 ensures that all components 1, 2, and 3 are positioned in a sprayable position within the drawer 6. Reference symbol list

[0025] 1, 2, 3 each laundry treatment agent 5 Feed mechanism 6 Drawer 7 Water inlet 8 Water 9 Separation 10 Laundry treatment fluid

Claims

1. Laundry treatment agent system comprising a first component (1) with a hydrogen peroxide carrier and a second component (2) with a bleach activator, wherein the first component (1) is configured as a first block-shaped laundry treatment agent and the second component (2) is configured as a second block-shaped laundry treatment agent.

2. Laundry treatment system according to claim 1, characterized by the fact that the first component (1) and / or the second component (2) each further comprise a builder, a surfactant, an enzyme and / or a performance polymer.

3. Laundry treatment system according to claim 1 or 2, characterized by the fact thatthe builder is selected from the group consisting of zeolite, citrate, aminocarboxylate, phosphonate and / or biopolymer, that the surfactant is selected from the group consisting of an anionic, nonionic, amphoteric and / or cationic surfactant, that the enzyme is selected from the group consisting of protease, amylase, lipase, manna and / or cellulase, and / or that the performance polymer is selected from the group consisting of performance polymer for preventing color transfer and / or performance polymer for preventing dirt transfer.

4. Laundry treatment system according to any one of the preceding claims, characterized by the fact that the first component (1) and / or the second component (2) each further contain an optical brightener, a processing aid, a tracer for concentration determination and / or a dye.

5. Laundry treatment system according to any one of the preceding claims, characterized by the fact thatthe hydrogen peroxide carrier is percarbonate or urea peroxide and / or the bleach activator is TAED (tetraacetylethylenediamine).

6. Laundry treatment system according to any one of the preceding claims, characterized by a third component (3) which is designed as a block-shaped fragrance and / or fabric softener.

7. Laundry treatment system according to claim 6, characterized by a fourth component (4) comprising a hydrogen peroxide carrier and a bleach activator and designed as a fourth block-shaped laundry treatment agent.

8. Laundry treatment system according to any of the preceding claims, characterized by the fact that the first component (1), the second component (2), the third component (3) and / or the fourth component (4) has a shape that distinguishes it from the other first, second, third or fourth components (1, 2, 3, 4).

9. Laundry treatment system according to any of the preceding claims, characterized by the fact that Ingredients of the first component (1), the second component (2), the third component (3) and / or the fourth component (4) are in the form of a compacted dry powder and / or granules.

10. Method for producing a laundry treatment agent system according to one of the preceding claims, comprising compacting ingredients of the first component (1) such that the first component (1) is produced as a first block-shaped laundry treatment agent, and compacting ingredients of the second component (2) such that the second component (2) is produced as a second block-shaped laundry treatment agent.

11. The method according to claim 9, wherein the compactor comprises a compression or an extrusion of the respective ingredients.

Citation Information

Patent Citations

  • Detergent compositions

    WO2000071666A1

  • unit detergent and cleaning compositions and methods of washing

    DE2521883A1

  • Multiphase washing and cleaning agent shaped bodies containing perfume

    WO2000075273A1

  • Bleach-containing detergent tablets

    WO2001034759A1

  • Process for making a tablet

    WO2006048606A1