EP0541475B1 - Composition pour le lavage automatique de la vaisselle - Google Patents

Composition pour le lavage automatique de la vaisselle Download PDF

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Publication number
EP0541475B1
EP0541475B1 EP92610076A EP92610076A EP0541475B1 EP 0541475 B1 EP0541475 B1 EP 0541475B1 EP 92610076 A EP92610076 A EP 92610076A EP 92610076 A EP92610076 A EP 92610076A EP 0541475 B1 EP0541475 B1 EP 0541475B1
Authority
EP
European Patent Office
Prior art keywords
weight
bleach
silver
dishwashing composition
calculated
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
EP92610076A
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German (de)
English (en)
Other versions
EP0541475A1 (fr
Inventor
Bjarne Skindhoj Pedersen
Anders Bjerre Kristensen
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.)
Cleantabs AS
Original Assignee
Cleantabs AS
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 Cleantabs AS filed Critical Cleantabs AS
Publication of EP0541475A1 publication Critical patent/EP0541475A1/fr
Application granted granted Critical
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Anticipated expiration legal-status Critical
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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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/046—Salts
    • 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
    • C11D17/0091—Dishwashing 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
    • C11D3/0073—Anticorrosion 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
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2086—Hydroxy carboxylic acids-salts thereof
    • 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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3942—Inorganic per-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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3945—Organic per-compounds

Definitions

  • the present invention relates to a machine dishwashing composition
  • a machine dishwashing composition comprising an oxygen donating bleach and ingredients conventional for dishwashing compositions including optionally further conventional adjuvants and/or fillers.
  • machine dishwashing compositions in the present specification also termed “automatic dishwashing compositions” have been formulated on the basis of chlorine-containing bleaches.
  • the automatic dishwashing compositions tend to develop more and more towards chlorine-free, non-corrosive automatic dishwashing compositions containing oxygen donating bleaches.
  • Such automatic dishwashing compositions include SUN PROGRESS® which is a pulverulent, phosphate-free, chlorine-free and non-corrosive automatic dishwashing composition available from Lever, Germany, and Milde KraftTM which is also a phosphate-free and chlorine-free, non-corrosive pulverulent product which is marketed in Germany by Benckiser.
  • Such oxygen-donating bleaches are encumbered with some drawbacks especially in connection with silver cutlery, as silver oxidation compounds are formed by corrosion during the dishwashing process, said compounds resulting in a discoloured yellowish or brownish surface covered by a loose white dust-like layer. This tendency is more or less pronounced for all the products presently on the market which are based on oxygen donating bleaches.
  • EP No 135.226 relates to a peroxide containing dishwashing composition with low chloride content in order to avoid tarnishing of silverware.
  • the publication discloses that the tendency of tarnishing of silverware is connected to the presence of chloride, especially alkali metal chloride, cf. page 2, lines 28-31 in the publication.
  • the machine dishwashing composition contains not more than 0,2 weight % chloride and preferably not more than 0,1 weight % chloride, as it is preferred that the composition in essentials is chloride free.
  • a further improvement in reducing the tendency of silver-tarnishing can be achieved by adding a small amount of a C 12 -C 18 fatty acid.
  • the present invention relates to a machine dishwashing composition
  • a machine dishwashing composition comprising an oxygen donating bleach and ingredients conventional to automatic dishwashing compositions including possible further conventional adjuvants and/or fillers
  • said automatic dishwashing composition being characterised in that it comprises a silver corrosion inhibitor consisting of a compound releasing ammonium ions in an amount of 1.5 to 10.5 parts by weight, calculated as ammonium chloride, per part by weight of active oxygen, calculated as O 2 releasable from the oxygen donating bleach.
  • the automatic dishwashing composition according to the invention may particularly advantageously be used when a formulation in the form of a tablet is desired where the problems of silver corrosion are often especially pronounced.
  • Examples of advantageous silver corrosion inhibitors capable of releasing ammonium ions include compounds selected from the group consisting of ammonium chloride, ammonium bromide, ammonium sulphate, diammonium hydrogencitrate and mixtures thereof.
  • the automatic dishwashing composition according to the invention comprises the silver corrosion inhibitor in an amount of at least 1.5 parts by weight of corrosion inhibitor, calculated as ammonium chloride, per part by weight of active oxygen, calculated as O 2 , releasable from the oxygen donating bleach, and advantageously not more than 10.5, particularly preferred not more than 6.5 and most preferred not more than 5.3 parts by weight of silver corrosion inhibitor, calculated as ammonium chloride, per part by weight of active oxygen.
  • the oxygen donating bleach contained in the automatic dishwashing composition may advantageously be a per-compound or a perhydrate or mixtures thereof.
  • a particularly advantageous recipe for the automatic dishwashing compositon according to the invention is found within the following limits: % by weight Oxygen donating bleach 3-39 Bleach activator 1-13 Polycarboxylate 5-21 Polyfunctional carboxylic acid 0-30 Sodium silicate 5-10 Tensides 3- 5 Enzymes 1- 5 Silver corrosion inhibitor 2-18 Sodium carbonate q.s. 100
  • the recipe is based on trade products and not on 100% active and anhydrous ingredients.
  • the essential feature of the present invention is that the discolouration and deposit of dust on silver can be avoided, which presents a pronounced problem in connection with a high content of oxygen donating bleaches.
  • a high content of oxygen donating bleaches is usually necessary in automatic dishwashing compositions in the form of tablets in order to ensure a sufficiently fast bleaching effect.
  • Examples of possible oxygen donating bleaches in question include perhydrates and per-compounds as well as mixtures thereof.
  • the perhydrates include preferably alkali metal compounds of perborates which may be present in the form of tetra- and monohydrates, perborax, percarbonates, persilicates, citrate perhydrates and perhydrates of urea and melamine compounds.
  • acidic persalts such as persulphates (e.g.
  • perbenzoates and peroxycarboxylic acids such as peroxyphthalate, magnesium monoperoxyphthalic acid, diperoxyphtalic acid, 2-octyl-diperoxysuccinic acid, diperoxydodecane dicarboxylic acid, diperoxyazelaic acid, imidoperoxycarboxylic acid, as well as salts and mixtures of such.
  • Sodium percarbonate and sodium perborate can be mentioned as particularly preferred bleaches.
  • the content of the oxygen donating bleach is usually of an amount corresponding to 0.4 to 5.3 parts by weight of active oxygen per 100 parts by weight of dishwashing compositon, which corresponds to about 3 to 39 parts by weight of sodium percarbonate per 100 parts by weight of the diswashing composition in the case of sodium percarbonate containing 13.5% by weight of active oxygen.
  • Any compound may be used as silver corrosion inhibitor provided said compound releases ammonium ions in the washing liquor and is active in forming stable silver complex salts while at the same time not having a detrimental effect on the cleaning performance.
  • the other ingredients of the automatic dishwashing compositon according to the invention may be selected among ingredients conventional for automatic dishwashing compositions, under the condition, of course, that such ingredients are compatible with the oxygen donating bleach and the silver corrosion inhibitor used.
  • suitable automatic dishwashing compositions by combining an oxygen donating bleach and a silver corrosion inhibitor on the basis of the instructions given in the present application and to select the remaining ingredients of the automatic dishwashing composition on the basis of the prior art.
  • the automatic dishwashing composition according to the invention is preferably manufactured in the form of tablets to be used in a dosage of, for instance, one or two tablets per wash cycle.
  • the manufacture of tablets usually requires addition of adjuvants, for instance in the form of starch, glycerol, polyethylene glycol, preferably of a molar weight of 100-10,000, polyvinyl pyrrolidone (PVP), polyvinyl polypyrrolidone (PVPP) or a stearate compound, such as sodium stearate.
  • adjuvants for instance in the form of starch, glycerol, polyethylene glycol, preferably of a molar weight of 100-10,000, polyvinyl pyrrolidone (PVP), polyvinyl polypyrrolidone (PVPP) or a stearate compound, such as sodium stearate.
  • PVP polyvinyl pyrrolidone
  • PVPP polyvinyl polypyrrolidone
  • a basic powder fraction is prepared, which comprises the solid ingredients of the automatic dishwashig composition, which for instance in the following recipe 1 according to Example 1 comprises bleach, bleach activator, polycarboxylate, polyfunctional carboxylic acid, silicate, enzymes, silver corrosion inhibitor and sodium carbonate.
  • the fluid ingredients usually comprising liquid tensides, are sprayed thereon, whereupon one or more tableting adjuvants can be sprayed on or added followed by a final mixing for 2 to 10 min.
  • the resulting powder mix is compressed to tablets of a diameter of, for instance, 32 mm in a tablet press (e.g. Fette Perfecta 4B).
  • the thickness of the manufactured tablets depends on the desired tablet weight and the formulation and is usually in the range of 13 to 20 mm. Further examples of the manufacturing of tablets are disclosed in DE-PS No. 355,626, US-PS No. 328,880 and DE-PS No. 3,827,895.
  • the automatic dishwashing composition comprises: % by weight Oxygen donating bleach 21.0 Bleach activator 7.0 Polycarboxylate 16.0 Polyfunctional carboxylic acid 15.0 Sodium carbonate 14.0 Sodium silicate 10.0 Tens ides 4.0 Enzymes 3.0 Silver factor 10.0
  • a second embodiment of the invention where the automatic dishwashing composition is in a pulverulent form, is as follows: % by weight Oxygen donating bleach 15.0 Bleach activator 5.0 Polycarboxylate 10.0 Polyfunctional carboxylic acid 15.0 Sodium carbonate 33.0 Sodium silicate 5.0 Tensides 4.0 Enzymes 3.0 Silver factor 10.0
  • bleach activators include N-acyl compounds and O-acyl compounds, such as acylated amines, diamines, amides, acylated glycoluriles, N-acylated cyclic hydrazides, triazoles, urazoles, diketopiperazines, sulphuryl amides, cyanurates and imidazolines, carboxylic acid anhydrides, acylated sugar compounds, acylated ester compounds etc.
  • N-acyl compounds and O-acyl compounds such as acylated amines, diamines, amides, acylated glycoluriles, N-acylated cyclic hydrazides, triazoles, urazoles, diketopiperazines, sulphuryl amides, cyanurates and imidazolines, carboxylic acid anhydrides, acylated sugar compounds, acylated ester compounds etc.
  • TAED tetraacetyl methylene diamine
  • TAED tetraacetyl ethylene diamine
  • TAGU tetraacetyl glycoluril
  • PAGE pentaacetyl glucose
  • NOBS nonanoyloxybenzene sulphonate
  • TAED is most preferred, TAED being available as a granulate having an active content of 85 to 95% by weight.
  • the bleach activators are described in greater detail in GB-PS No. 2,040,983 and GB-PS No. 1,473,201.
  • polycarboxylate used examples include polymerisates of acrylic acid, hydroxyacrylic acid, maleic acid, itaconic acid, metaconic acid, aconitic acid, methylene malonic acid, citraconic acid etc., as well as copolymerisates of said carboxylic acids either with each other or with other ethylenically unsaturated compounds, such as ethylene, propylene, isobutylene, vinyl alcohol, vinylmethyl ether, furane, acrolein, vinyl acetate, acrylamide, acrylonitrile, methacrylic acid or crotonic acid.
  • the molecular weight of the polycarboxylate may be in the range of 1,000 to 1,000,000, preferably 2,000 to 100,000 and most preferred 7,000 to 30,000.
  • the weights stated for the polyfunctional carboxylic acid refer to anhydrous citric acid.
  • Usable polyfunctional carboxylic acids may generally be defined as such acids which in addition to the one requisite carboxylic acid group also contain at least one further functional group selected among carboxyl and hydroxy. Moreover, nitrogen may also be incorporated in the molecule in some cases.
  • examples of such polyfunctional carboxylic acids include NTA, EDTA and isoserine diacetic acid of the formula (CH 2 COOH) 2 N-CH 2 CHOHCOOH.
  • the present example illustrates a comparison test carried out on automatic dishwashing compositions according to the invention in the form of tablets containing 10% and 5% of silver factor in the form of ammonium chloride as stated in Examples 1 and 2, a recipe corresponding to the recipe given in Example 1, however without the content of silver factor (recipe A); and on a leading pulverulent product on the market "MILDE KRAFT" (recipe B) based on an oxygen donating bleach.
  • the recipe without silver factor is as follows: Recipe A (without silver factor) % by weight Sodium percarbonate 21.0 Sodium carbonate 24.0 Sodium disilicate 10.0 Citric acid, anhydrous 15.0 SokalanTM PA 40 G 15.9 TAED 7.0 PlurafacTM LF 403 4.1 Enzymes 3.0
  • test was carried out under the following test conditions: Dishwashing machine Cylinda E 1502 Temperature 55°C - no prewash Water hardness 20 °dH and 2 °dH Dosing 1 tablet of 18 g Number of wash cycles 6 Test objects 3 different types of hallmarked silver spoons, all clean.
  • a scale from 0 to 4 was used, where 0 indicates no discolouration or no dust deposit, respectively, and 4 indicates extensive discolouration and extensive dust deposit, respectively.
  • the automatic dishwashing compositions according to the invention are superior in presenting a substantially reduced corrosion of silver cutlery.
  • total scores of from 6 to 13 are obtained for the automatic dishwashing compositions according to the invention (recipe 1 and 2) at a water hardness of 20° dH.
  • MILDE KRAFT (recipe B) represents the best phosphate-free and chlorine-free, non-corrosive pulverulent product on the market, and when used in a dosage of 25 g this product causes a substantially stronger corrosion in form of dust deposits and discolouration, the total score being 15.
  • recipe A where the total score is also 15.
  • the present Example illustates a comparison test carried out on automatic dishwashing compositions in the form of tablets according to the invention on the one hand and on tablets according to recipe A and MILDE KRAFT (recipe B) on the other hand.
  • corrosion of silver spoons was determined as stated in Example 3 as well as the cleaning performance on steel cutlery and other tableware soiled in accordance with the guidelines stipulated by the IEC (International Electrotechnical Commission).
  • This recipe corresponds to recipe 1 with the exception that anhydrous monosodiumcitrate has been used as solubilizer instead of citric acid.
  • This recipe corresponds to recipe 1 with the exception that diammoniumhydrogen citrate has been used as silver factor instead of ammonium chloride.
  • This recipe corresponds to recipe 1 with the exception that ammonium sulphate has been used as silver factor instead of ammonium chloride, and that this recipe uses TAED with the trade name TAED ATC available from the firm of Warwick International Ltd., Mostyn, North Wales instead of TAED supplied by Hoechst.
  • This recipe corresponds to recipe 1 with the exception that ammonium sulphate has been used as silver factor instead of ammonium chloride.
  • the determination of the cleaning performance was carried out on steel cutlery and on other tableware, i.e. cups, plates, glasses etc, soiled in accordance with the guidelines stipulated by the IEC (International Electrotechnical Commission).
  • IEC International Electrotechnical Commission
  • each cup, plate, knife, fork etc was evaluated on a scale from 1 to 5 scores.
  • the scores were calculated for steel cutlery, various plates and glasses, which had been soiled with non-tea containing smudge and for teacups which had been smudged with tea. Furthermore, a total score was calculated.
  • the scores obtained are given in Table 2 below, where 100% indicates the maximum cleaning performance attainable.
  • the automatic dishwashing compositions according to the invention are superior with respect to a reduced corrosion of the silver cutlery.
  • ammonium sulphate as silver factor (recipes 5 and 6) entails a very large ability to prevent loose dust deposits while the ability to prevent discolouration is less favourable compared to ammonium chloride (recipe 1).
  • the automatic dishwashing compositions according to the invention (the recipes 1 to 6) and recipe A and recipe B disclose largely the same performance as to tea-containing stains. As to non-tea containing stains and the total score, no significant difference appears either. As regards the cleaning performance, the automatic dishwashing compositions according to the invention are thus satisfactory and comparable with the best products on the market.

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  • 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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)

Claims (9)

  1. Composition pour le lavage de la vaisselle en machine comprenant un agent de blanchiment donneur d'oxygène et des ingrédients classiques pour des compositions de lavage de la vaisselle, comprenant éventuellement d'autres adjuvants et/ou charges classiques, caractérisée en ce qu'elle comprend un inhibiteur de corrosion de l'argent constitué d'un composé libérant des ions ammonium en une quantité de 1,5 à 10,5 parties en poids, calculée sous forme de chlorure d'ammonium, par partie en poids d'oxygène actif, calculé sous forme d'O2 que l'on peut libérer à partir de l'agent de blanchiment donneur d'oxygène.
  2. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans la revendication 1, caractérisée par le fait qu'elle est sous forme d'une pastille.
  3. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans la revendication 1, caractérisée en ce que l'inhibiteur de corrosion de l'argent est choisi dans le groupe constitué du chlorure d'ammonium, du bromure d'ammonium, du sulfate d'ammonium, de l'hydrogénocitrate de diammonium et de leurs mélanges.
  4. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans la revendication 1, caractérisée en ce qu'elle contient de 1,5 à 6,5 parties en poids d'inhibiteur de corrosion de l'argent, calculé sous forme de chlorure d'ammonium, par partie en poids d'oxygène actif.
  5. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans la revendication 1, caractérisée en ce qu'elle contient de 1,5 à 5,3 parties en poids d'inhibiteur de corrosion de l'argent, calculé sous forme de chlorure d'ammonium, par partie en poids d'oxygène actif.
  6. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans l'une quelconque des revendications précédentes, caractérisée en ce que l'agent de blanchiment donneur d'oxygène est choisi parmi les percomposés ou les perhydrates ou leurs mélanges.
  7. Composition pour le lavage de la vaisselle en machine telle que revendiquée dans l'une quelconque des revendications précédentes, caractérisée en ce qu'elle comprend : % en poids Agent de blanchiment donneur d'oxygène 3 - 39 Activateur de blanchiment 1 - 13 Polycarboxylate 5 - 21 Acide carboxylique polyfonctionnel 0 - 30 Silicate de sodium 5 - 10 Tensioactifs 3 - 5 Enzymes 1 - 5 Inhibiteur de la corrosion de l'argent 2 - 18 Carbonate de sodium    q.s. pour 100
  8. Utilisation d'une composition comprenant un agent de blanchiment donneur d'oxygène et des ingrédients classiques pour des compositions pour le lavage de la vaisselle en machine, comprenant éventuellement d'autres adjuvants et/ou charges classiques et un composé libérant des ions ammonium, en une quantité de 0,03 à 10,5 parties en poids, calculée sous forme de chlorure d'ammonium, par partie en poids d'oxygène actif, calculé sous forme d'O2 que l'on peut libérer à partir de l'agent de blanchiment donneur d'oxygène, en tant que composition pour le lavage de la vaisselle en machine avec un effet d'inhibition de la corrosion de l'argent.
  9. Utilisation selon la revendication 8, dans laquelle la composition contient de 0,7 à 6,5 parties en poids d'inhibiteur de corrosion de l'argent, calculé sous forme de chlorure d'ammonium, par partie en poids d'oxygène actif.
EP92610076A 1991-11-08 1992-11-04 Composition pour le lavage automatique de la vaisselle Expired - Lifetime EP0541475B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DK184091 1991-11-08
DK184091A DK167364B1 (da) 1991-11-08 1991-11-08 Maskinopvaskemiddel
DK1840/91 1991-11-08

Publications (2)

Publication Number Publication Date
EP0541475A1 EP0541475A1 (fr) 1993-05-12
EP0541475B1 true EP0541475B1 (fr) 1999-01-20

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EP92610076A Expired - Lifetime EP0541475B1 (fr) 1991-11-08 1992-11-04 Composition pour le lavage automatique de la vaisselle

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EP (1) EP0541475B1 (fr)
DE (1) DE69228223T2 (fr)
DK (1) DK167364B1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL177936B1 (pl) * 1993-05-08 2000-01-31 Henkel Kgaa Niskoalkaliczny środek do maszynowego zmywania naczyń
US5888954A (en) * 1993-05-08 1999-03-30 Henkel Kommanditgesellschaft Auf Aktien Corrosion inhibitors for silver
DE69328679T2 (de) * 1993-07-16 2001-01-11 Procter & Gamble Waschmittelzusammensetzungen für Geschirrspülmaschinen
DE4325039A1 (de) * 1993-07-26 1995-02-02 Benckiser Gmbh Joh A Maschinengeschirrspülmittel
EP0682105A3 (fr) * 1994-04-13 1997-11-05 The Procter & Gamble Company Compositions de blanchiment
GB2294268A (en) * 1994-07-07 1996-04-24 Procter & Gamble Bleaching composition for dishwasher use
EP0842257B1 (fr) 1995-07-13 2000-12-27 Benckiser N.V. Produit vaisselle sous forme de pastilles pour lave-vaisselle
US5981456A (en) * 1997-07-23 1999-11-09 Lever Brothers Company Automatic dishwashing compositions containing water soluble cationic or amphoteric polymers

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517996A1 (fr) * 1991-06-14 1992-12-16 The Procter & Gamble Company Compositions de blanchiment stables, contenant du péroxyde d'hydrogène
EP0540090A2 (fr) * 1991-11-01 1993-05-05 Unilever N.V. Produits détergents liquides

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8321924D0 (en) * 1983-08-15 1983-09-14 Unilever Plc Enzymatic machine-dishwashing compositions
US4992195A (en) * 1988-08-10 1991-02-12 Monsanto Company Dishwashing composition

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517996A1 (fr) * 1991-06-14 1992-12-16 The Procter & Gamble Company Compositions de blanchiment stables, contenant du péroxyde d'hydrogène
EP0540090A2 (fr) * 1991-11-01 1993-05-05 Unilever N.V. Produits détergents liquides

Also Published As

Publication number Publication date
DE69228223D1 (de) 1999-03-04
DE69228223T2 (de) 1999-05-27
DK184091D0 (da) 1991-11-08
DK184091A (da) 1993-05-09
EP0541475A1 (fr) 1993-05-12
DK167364B1 (da) 1993-10-18

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