EP0423487B1 - Klarspüler für Geschirrspülmaschinen - Google Patents

Klarspüler für Geschirrspülmaschinen Download PDF

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Publication number
EP0423487B1
EP0423487B1 EP90117621A EP90117621A EP0423487B1 EP 0423487 B1 EP0423487 B1 EP 0423487B1 EP 90117621 A EP90117621 A EP 90117621A EP 90117621 A EP90117621 A EP 90117621A EP 0423487 B1 EP0423487 B1 EP 0423487B1
Authority
EP
European Patent Office
Prior art keywords
builder
rinsing agent
agent according
mixture
weight
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.)
Expired - Lifetime
Application number
EP90117621A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0423487A3 (en
EP0423487A2 (de
Inventor
Wolfgang Gross
Guido Wäschenbach
Klaus Golz
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.)
Joh A Benckiser GmbH
Original Assignee
Joh A Benckiser GmbH
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 Joh A Benckiser GmbH filed Critical Joh A Benckiser GmbH
Publication of EP0423487A2 publication Critical patent/EP0423487A2/de
Publication of EP0423487A3 publication Critical patent/EP0423487A3/de
Application granted granted Critical
Publication of EP0423487B1 publication Critical patent/EP0423487B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
    • 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
    • C11D17/0052—Cast detergent compositions
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/128—Aluminium silicates, e.g. zeolites

Definitions

  • the opposite of the present invention is a new rinse aid for dishwashers in the form of a slowly dissolving solid block which does not contain any environmentally harmful phosphates.
  • Modern dishwashing detergents have a more or less sophisticated control system in which, in addition to pre-rinsing, the main cleaning cycle, in which the actual washing-up liquid is used at higher temperatures, one or more rinse cycles are followed before the cleaned dishes are dried under the influence of heat. Rinsing should remove residues of cleaning agents that are still adhering to the dishes from the main wash cycle. When washing with water, however, water droplets remain on the dishes, which form blind spots of calcium and magnesium salts after drying, especially in areas with hard water.
  • rinse aid to the last rinse water used for rinsing, which on the one hand contains a surfactant which ensures that the rinsing water can run off the dishes as residue-free as possible and on the other hand contains builder substances which bind calcium and magnesium ions and thereby a deposition of the corresponding carbonates on the dishes is prevented or carbonate that has already precipitated is brought back into solution.
  • these rinse aids can also contain agents which give the dishes a surface gloss after drying.
  • the low additional effort for the rinse aid is therefore compensated for in price by a correspondingly lower amount of the main detergent required.
  • the rinse aid is released so slowly that a single fixed block with an edge length of 2.5 cm, for example, is sufficient to ensure perfect rinse aid through several rinse cycles.
  • EP-A 0182 461 discloses rinse aid in the form of solid blocks which consist of a water-insoluble wetting agent, in particular polyoxypropylene-polyoxyethylene block polymer, urea and an additive which is sparingly soluble in water.
  • a water-insoluble wetting agent in particular polyoxypropylene-polyoxyethylene block polymer
  • urea polyoxypropylene-polyoxyethylene block polymer
  • an additive which is sparingly soluble in water.
  • the rate of dissolution of the wetting agent is promoted by the urea and slowed down by the additive, so that it can be adjusted within further limits.
  • Such builder-free agents are unsuitable for lime-rich water.
  • rinse aids consist of a natural or artificially produced clay, in particular of the hectorite type, a wetting agent and sodium citrate as well as isopropyl alcohol and water as a solvent.
  • the mixtures are added to the rinsing water as a solution or suspension, although solid addition as a powder, tablet, block or granulate is also considered. The handling of such substances is therefore problematic.
  • the rinse aid according to the invention consist of a solid block which is slowly soluble in water and which contains 5-40, preferably 10-20% by weight of surfactants and 3-50, preferably 20-40% by weight of builders and suitable carriers, preferably in an amount of 3-7% by weight. % and optionally up to 10% of dyes and / or fragrances and / or chlorine-releasing substance, a phosphate-free mixture comprising 30-86.1% by weight of a sodium aluminum silicate of the zeolite A type and 13.9-50% by weight of one being used as the builder Contains polymaleinates with a molecular weight of 800-10,000.
  • Biodegradable builders can also be present as builders in an amount of up to 50%, which are selected from the group consisting of citric acid, tartaric acid, malic acid or gluconic acid and low molecular weight polyacrylates.
  • the rinse aid preferably contains 5-50, in particular 15-35% by weight of polyethylene glycol, 3-40, in particular 15-30% by weight of stearic acid ethanolamide and / or 2-20, in particular 5-15% by weight, stearic fatty acid amide.
  • a nonionic surfactant, in particular a fatty alcohol alkoxylate, may also be present.
  • the rinse aids are used in the form of water-soluble solid blocks, which are produced in the usual way by melting and mixing the carriers and surfactants at temperatures up to 60 ° C, after which the builder substances and any other constituents are stirred in, the mixture in Forms are poured and solidified.
  • zeolite can be used as a builder in a rinse aid, since it was actually to be expected that instead of calcium carbonate deposits, deposits of zeolite particles would now be found on the dishes.
  • the calcium and magnesium ions In order for the calcium and magnesium ions to be largely bound to the builder in excess, there is a very great risk that the builder itself remains as a poorly soluble residue on the bare tableware surface.
  • the zeolite builder is mixed with a polymaleinate of a defined size, ie a molecular weight of 800-10,000, and applied to the dishes as a rinse aid component. It is believed that these polymers ensure that the zeolite particles cannot adhere to the surface of the dishes but run off with the rinse water.
  • biodegradable builder known per se can be used instead of the aforementioned zeolites.
  • B. complexing acids such as citric acid, tartaric acid, malic acid or gluconic acid and low molecular weight polyacrylates can be used.
  • the surfactants used must be as low-foaming as possible to allow the rinsing solution to flow away clearly.
  • both cationic and anionic as well as nonionic surfactants can be used.
  • Nonionic surfactants are particularly preferred because of their good degradability, in particular fatty alcohol alkoxylates.
  • the products of the invention may also contain up to 10% by weight of dyes or perfumes to a small extent in order to make the products more attractive to the consumer.
  • Other additives include, for example, chlorine-releasing agents such as sodium dichloroisocyanate, which can bring about additional sterilization of the dishes, electrolyte salts, such as sodium sulfate or sodium chloride, which influence solubility, or other additives known for this purpose, which may also be present in small amounts in the rinse aid according to the invention .
  • Table 1 shows the composition of commercial rinse aid containing phosphate and sulfate and the composition of several rinse aid according to the invention.
  • the individual rinse aids weigh 45 - 48g and contain traces of a dye (YellowDye) and 1% lemon perfume in addition to the substances listed in the table. Power and degradation speed correspond to the mean values according to the tests in Tables 2 and 3.
  • Table 2 contains the drying performance of the rinse aid tested according to Tab. 1 in a dishwasher compared to porcelain, glass or cutlery.
  • a Bosch dishwasher (S 710) and 40 g of a standard detergent (S 44) were used at a washing temperature of 65 ° C and a water hardness of 18 German degrees of hardness.
  • the dishes were soiled using the minced meat method.
  • the evaluation was carried out visually, with 50 porcelain parts, 10 glass parts and 40 cutlery parts being assessed per experiment.
  • Table 3 shows the dissolution rate of these solids in the rinse cycles.
  • the dissolution rate was determined in 10 successive rinse cycles in a Kenmore machine from Sears, USA.
  • the normal wash program was used and 60 g of S 44 detergent were added per wash.
  • the water hardness was 18 ° DH.
  • the values given in the table represent average values from 3 or 5 washing stones. The stones were arranged in the upper washing basket and their position changed after each washing cycle.
  • Table 1 Rinse aid recipes comparison according to the invention % % % % % % % % % % % % % % % Raw materials / recipe no.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
EP90117621A 1989-10-18 1990-09-13 Klarspüler für Geschirrspülmaschinen Expired - Lifetime EP0423487B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3934675 1989-10-18
DE3934675A DE3934675C1 (enrdf_load_stackoverflow) 1989-10-18 1989-10-18

Publications (3)

Publication Number Publication Date
EP0423487A2 EP0423487A2 (de) 1991-04-24
EP0423487A3 EP0423487A3 (en) 1991-11-21
EP0423487B1 true EP0423487B1 (de) 1996-06-12

Family

ID=6391669

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90117621A Expired - Lifetime EP0423487B1 (de) 1989-10-18 1990-09-13 Klarspüler für Geschirrspülmaschinen

Country Status (4)

Country Link
EP (1) EP0423487B1 (enrdf_load_stackoverflow)
AT (1) ATE139253T1 (enrdf_load_stackoverflow)
DE (2) DE3934675C1 (enrdf_load_stackoverflow)
ES (1) ES2090068T3 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000006688A1 (de) * 1998-07-29 2000-02-10 Reckitt Benckiser N.V. Zusammensetzung zur verwendung in einer geschirrspülmaschine
EP2179023A1 (en) * 2007-08-14 2010-04-28 Unilever N.V. Detergent tablet
PL2392639T3 (pl) * 2010-06-04 2018-07-31 Dalli-Werke Gmbh & Co. Kg Mieszanina środka powierzchniowo czynnego zawierająca stały związek dla polepszania działania ułatwiającego płukanie detergentów do automatycznych zmywarek do naczyń

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3272899A (en) * 1960-12-06 1966-09-13 Hagan Chemicals & Controls Inc Process for producing a solid rinse block
BE5T2 (fr) * 1977-06-21 1980-02-08 Procter & Gamble Europ Wasmiddelrn
DE2840167A1 (de) * 1978-09-15 1980-03-27 Basf Ag Verfahren zur herstellung von polymaleinsaeuren aus maleinsaeureanhydrid in gegenwart von acetanhydrid und wasserstoffperoxid
GB8328077D0 (en) * 1983-10-20 1983-11-23 Unilever Plc Rinse aid
US4545917A (en) * 1984-02-09 1985-10-08 Creative Products Resource Associates Ltd. Automatic dishwasher product in solid form
US4624713A (en) * 1984-11-15 1986-11-25 Economics Laboratory, Inc. Solid rinse aids and methods of warewashing utilizing solid rinse aids

Also Published As

Publication number Publication date
EP0423487A3 (en) 1991-11-21
EP0423487A2 (de) 1991-04-24
DE59010371D1 (de) 1996-07-18
DE3934675C1 (enrdf_load_stackoverflow) 1991-05-23
ATE139253T1 (de) 1996-06-15
ES2090068T3 (es) 1996-10-16

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