Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/22—Carbohydrates or derivatives thereof
  • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
• • 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
• • 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
  • C11D3/16—Organic compounds
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/382—Vegetable products, e.g. soya meal, wood flour, sawdust
• • 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
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/22—Organic compounds
  • C11D7/40—Products in which the composition is not well defined
  • C11D7/44—Vegetable products

Definitions

• the invention relates to a detergent compact of the type corresponding to the preamble of claim 1.
• the technique of presentation in pellets, each containing a larger amount of the ingredients, for example sufficient for a wash cycle, would also be of great importance for detergents, since the dosage could then be limited to counting and no weighing or volume measurement processes would be necessary.
• the detergents differ from the detergents in that they have to be distributed much faster in the washing liquid and their ingredients should not be gradually released.
• the detergents also contain components that do not dissolve in the water.
• the differences in the structure of the ingredients have meant that portions of detergent comparable to detergent tablets have so far encountered difficulties because the balance between abrasion resistance and breaking strength of the compacts during transport and storage on the one hand and a sufficiently rapid disintegration of the compacts in the washing liquid on the other hand is difficult to find and comply with.
• the invention has for its object to design a generic detergent compact so that it quickly disintegrates after being introduced into the liquid and releases the detergent composition so that it can be distributed in the liquid.
• the detergent compact is designed so that one compact or a number of compacts contains the amount of detergent composition required for a batch. The portioning is done by adding one or more of these compacts, that is, simply by counting, but no longer by metering in a certain amount of a liquid or free-flowing agent.
• the detergent compact must be such that it survives handling during transport, storage and metering without splintering and without significant abrasion, but on the other hand dissolves in water with sufficient speed.
• the disintegrant is provided in the form of the compacted and granulated, small-part cellulose-containing material, which, like a medical tablet, ensures that when it comes into contact with the liquid, in particular the water, an increase in the volume of the small-part particles within the mixture of the ingredients and the disintegrant in cracks occur in the detergent compact, through which the water quickly penetrates into the interior of the detergent compact and causes its disintegration.
• a very important aspect of the invention is that the small-part cellulose-containing material is compacted before being added to the powdered detergent.
• the term "compacting" is intended to mean the application of pressure on the cellulose-containing material which compresses the volume of the cellulose-containing material without the fibers being destroyed.
• the particles should therefore be deformed during the compaction, in contrast to the aggregation, in which there is only an attachment of the particles without a significant change in their shape.
• the compacting in this sense is said to increase before the disintegrant thus produced is admixed the ingredients.
• the detergent compact comes into contact with water or other liquid, the cellulose-containing material jumps from its compacted state back to a state with an open, relaxed volume. Whether this process is based on capillary or other forces can be left open. In any case, the increase in volume is much greater than that which results from pure swelling of the cellulose-containing material.
• Granulate particles which form larger aggregates of a large number of starting particles are thus produced from the very finely divided, for example ground, starting material during or after the compaction. These larger aggregates, i.e. the granulate particles, are added to the ingredients and the mixture is pressed into the detergent pellets.
• the liquid is water in most cases, but the invention is not so limited. Rather, it can also be used with other liquids, for example alcohol or the like.
• cellulose-containing materials to be used as disintegrants according to the invention are said to be those in which the cellulose is at least predominantly chemically unchanged.
• the compacted particles of the cellulose-containing material ie the granulate
• the proportion by weight of the compacted cellulose-containing material in the finished detergent compact can be 3 to 6 percent.
• the detergent compact additionally comprises a proportion of small-sized, non-compacted cellulose-containing material (claim 6).
• this portion does not act as a disintegrant, it can develop a kind of wicking action in the pressed mass and be useful for the faster penetration of the water into the interior of the detergent compact.
• the proportion by weight of the non-compacted cellulose-containing material in the finished detergent compact can be 1 to 3 percent (claim 7).
• the compacted cellulose-containing material contained in the detergent compact can have a coating with a swelling or thickening agent (claim 8).
• Such agents are known per se as tablet disintegrants in the pharmaceutical sector (see “Römpp-Chemie-Lexikon” 9th edition (1995), page 4440, keyword “tablet disintegrants”).
• the cellulose-containing material contained in the detergent compact has a coating with a surfactant (claim 9), which can make up a weight fraction of 0.5 to 5.0 percent of the finished detergent compact (claim 10) and in addition to that in powder detergent already contained surfactant is present in the detergent compact.
• the surfactant is said to promote the distribution of the liquid along the surface of the particles of the cellulosic material.
• the dispersing properties of the cellulosic material can be increased if it is at least partially fibrillated, i.e. is crushed to bundles of a few parallel cellulose fibers each (claim 11).
• the detergent pellets should hold together only by the pressing, but not via liquid, subsequently hardening parts, which disintegrate the Detergent pellet would delay in the liquid or water.
• TMP Thermo Mechanical Pulp
• CTMP Chemo Thermo Mechanical Pulp
• the dimensions of the detergent compact that are considered are characterized by a largest dimension of approximately 1 to 10 cm, preferably 2 to 4 cm (claim 15).
• a bed 1 of cellulose-containing material in the exemplary embodiment TMP, is fed to a pair of press rolls 2, into which a compacting takes place while compressing the volume of the individual particles and connecting them to form a type of coherent, compressed web 3.
• 4 symbolizes the shredding of the web 3 into granules 5.
• a single granule 5 is shown in FIG. 2. It contains a large number of finely divided TMP particles 6, the particle size of which is approximately 50 ⁇ m, i.e. the TMP material has a grain size distribution, the maximum of which is around 50 ⁇ m.
• the individual very finely divided TMP particles 6 hold together through the pressure experienced in the pair of press rolls 2. At the same time, the individual particles 6 in the press nip have been compressed relative to their original shape, i.e. they have been compacted.
• the granulate particles 5 in turn have a grain size distribution with a maximum at about 2 mm, i.e. the size of the granulate particles 5 is about 2 orders of magnitude larger than the size of the very finely divided TMP particles.
• the granulate particles 5 can also contain non-compacted cellulose-containing particles 7 be, which are indicated by short straight lines and which may have a coating with a surfactant to promote the penetration of the liquid, in particular the washing water.
• the detergent composition itself is in the form of a powder / granule mixture.
• the individual detergent particles are designated 8 in FIG. 3.
• the detergent composition is mixed with the granulate particles 5 made of TMP, which are shown in FIG. 3 as small circles, and then pressed into a detergent compact 10, which according to FIG. 3 is designed as a small cuboid with edge lengths of 2 to 3 cm.
• a detergent compact 10 which according to FIG. 3 is designed as a small cuboid with edge lengths of 2 to 3 cm.
• edge lengths of 2 to 3 cm.
• all other shapes are also possible, for example small circular disks or the like.
• the pressing of the detergent pellets 10 takes place in such a way that they do not crumble during handling, but that they disintegrate almost immediately when introduced into the liquid and release the detergent composition. This is caused by the granulate particles 5, which immediately regain their former shape in contact with the wash water, i.e. undo the compaction and thereby increase in volume. If there is a 20 percent increase in volume and the individual particle is, for example, 2 mm in size, an expansion of 0.4 mm arises when contacting the water, which is sufficient to bond the detergent compact 10, which is only brought about by the dry pressing to blast locally and release the detergent particles.
• the granulate particles 5 themselves disintegrate in contact with the washing water, so that finally only the individual particles 6 and 7 of the cellulose-containing material are present, which are chemically essentially inert and also do not otherwise interfere with the washing process.

Landscapes

• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Wood Science & Technology (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Molecular Biology (AREA)
• Emergency Medicine (AREA)
• Detergent Compositions (AREA)
• Prostheses (AREA)
• Coloring Foods And Improving Nutritive Qualities (AREA)
• General Preparation And Processing Of Foods (AREA)
• Fertilizers (AREA)
• Saccharide Compounds (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=7822970

Family Applications (1)

Country Status (8)

Cited By (1)

Families Citing this family (48)

Family Cites Families (83)

• 1997
  • 1997-03-11 DE DE19758811A patent/DE19758811B4/de not_active Expired - Lifetime
  • 1997-03-11 DE DE19709991A patent/DE19709991C2/de not_active Revoked
• 1998
  • 1998-02-28 US US09/380,739 patent/US7008912B1/en not_active Expired - Fee Related
  • 1998-02-28 AT AT98916813T patent/ATE205875T1/de not_active IP Right Cessation
  • 1998-02-28 DK DK98916813T patent/DK0970181T3/da active
  • 1998-02-28 PT PT98916813T patent/PT970181E/pt unknown
  • 1998-02-28 DE DE59801528T patent/DE59801528D1/de not_active Expired - Lifetime
  • 1998-02-28 ES ES98916813T patent/ES2165155T3/es not_active Expired - Lifetime
  • 1998-02-28 EP EP98916813A patent/EP0970181B1/de not_active Expired - Lifetime
  • 1998-02-28 WO PCT/DE1998/000589 patent/WO1998040462A1/de not_active Ceased

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