EP1061123A1 - Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen - Google Patents

Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen Download PDF

Info

Publication number: EP1061123A1
Authority: EP; European Patent Office
Prior art keywords: washing machine; dish washing; automatic dish; cleaner; surfactant
Prior art date: 1999-05-28
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.): Granted

Application number

EP00303177A

Other languages

English (en)

French (fr)

Other versions

EP1061123B1 (de

EP1061123B2 (de

Inventor

Alan Digby Unilever Resrch.Vlaardingen Tomlinson

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.)

Unilever PLC

Unilever NV

Original Assignee

Unilever PLC

Unilever NV

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.)

1999-05-28

Filing date

2000-04-14

Publication date

2000-12-20

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26073120&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1061123(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

2000-04-14 Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC

2000-04-14 Priority to EP00303177A priority Critical patent/EP1061123B2/de

2000-12-20 Publication of EP1061123A1 publication Critical patent/EP1061123A1/de

2004-06-30 Publication of EP1061123B1 publication Critical patent/EP1061123B1/de

2005-08-24 Priority to TW094305092F priority patent/TWD114205S1/zh

2007-02-14 Application granted granted Critical

2007-02-14 Publication of EP1061123B2 publication Critical patent/EP1061123B2/de

2020-04-14 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

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
- C11D3/2075—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
- C11D3/16—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
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
- 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
- C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
- C11D2111/10—Objects to be cleaned
- C11D2111/14—Hard surfaces

Definitions

the present invention is in the field of machine dishwashing. More specifically, the invention encompasses a cleaner for automatic dishwashing machines.
the present invention relates to a composition used to clean dish washing machines. Such cleaning compositions are frequently used by the consumer to clean the dish washer itself and so remove deposits after the machine has been used to clean crockery.
the present invention relates to a composition for cleaning dish washers in which the problem of co-agulation is mitigated.
an automatic dish washing machine cleaner comprising at least 50% wt of the total composition of a partially or fully hydrated organic acid and at least 0.5 % wt of the total composition of a surfactant
the present invention also provides the use of citric acid monohydrate in a dish washing machine cleaner to prevent mass solidification.
compositions of the present invention comprise a partially or fully hydrated organic acid as an essential element.
Suitable partially or fully hydrated organic acids organic acids include, for example, carboxylic acids, such as citric and succinic acids, polycarboxylic acids, such as polyacrylic acid, and also acetic acid, boric acid, malonic acid, adipic acid, fumaric acid, lactic acid, glycolic acid, sulphamic acid, tartaric acid, tartronic acid, maloic acid, their derivatives and any mixtures of the foregoing.
Suitable water-soluble monomeric or oligomeric carboxylates can be selected from a wide range of compounds but such compounds preferably have a first carboxyl logarithmic acidity/constant (pK 1 ) of less than 9, preferably of between 2 and 8.5, more preferably of between 2.5 and 7.5.
pK 1 first carboxyl logarithmic acidity/constant
Polycarboxylic acids containing four carboxy groups include oxydisuccinic acids, 1,1,2,2-ethane tetracarboxylic acids, 1,1,3,3-propane tetracarboxylic acids and 1,1,2,3-propane tetracarboxylic acids.
Polycarboxylic acids containing sulfo substituents include the sulfosuccinic derivatives, and the sulfonated pyrolysed citratic acids.
the preferred polycarboxylic acids are hydroxycarboxylic containing up to three carboxy groups per molecules, more particularly citric acid monohydrate.
the partially/fully hydrated acids have an average particle size from 0.8 to 3 d m (RR)/mm, more preferably from 1.4 to 2.5 d m (RR)/mm.
the 95 % of the particles have a particle size greater than lmm and less than 3mm.
the organic acid is present at a level of at least 50 wt% of the total formulation, more preferably at a level greater than 70 wt%, most preferably at a level from 85 wt% to 98 wt%.
a surfactant system comprising a surfactant selected from nonionic, anionic, cationic, ampholytic and zwitterionic surfactants and mixtures thereof is also present in the composition.
the surfactant is a low to non foaming nonionic surfactant, which includes any alkoxylated nonionic surface-active agent wherein the alkoxy moiety is selected from the group consisting of ethylene oxide, propylene oxide and mixtures thereof, is preferably used to improve the detergency without excessive foaming especially preferred are ethoxylated and/or propoxylated straight chain alcohols.
nonionic surfactant should be avoided. Normally, an amount of 10% by weight or lower, preferably 7% by weight or lower, most preferably 5% by weight or lower and preferably 0.1% by weight or higher, more preferably 0.5% by weight or higher is quite sufficient.
nonionic surfactants for use in the invention are the low- to non-foaming ethoxylated straight-chain alcohols of Plurafac LF series ex BASF, Synperonic series ex ICI; of the Lutensol® LF series, supplied by the BASF Company and of the Triton® DF series, supplied by the Rohm & Haas Company.
anionic surfactant may be used but may require the additional presence of an antifoam to surpress foaming. If an anionic surfactant is used it is advantageously present at levels of 2 wt% or below.
suitable flow aids include Aluminium silicate (Alusil), Calcium silicate (Calflow) and silicas.
Bleach material may optionally be incorporated in composition for use in processes according to the present invention, but preferably are not present.
the bleach material may be a chlorine- or bromine-releasing agent or a peroxygen compound. Peroxygen based bleach materials are however preferred.
compositions that may be present include crystal-growth inhibitors, threshold agents; perfumes and dyestuffs and the like.
the dish washing machine cleaner has gives a pH of 3 or less in a 1% aqueous solution at 20°C. More preferably the composition has a pH from 1 to 2 in a 1% aqueous solution at 20°C.
the dish washing composition is preferably granular.
Granular in the context of the present invention includes both powdered material and tablets.
the cleaning composition may be added to the machine via the dispenser drawer or sprinkled directly into the base of the dish washer. It is particularly advantageous if the composition is added directly to the base of the machine, as this leads to an effective dosing level.
Dishwash compositions according to the present invention may be dosed in the wash liquor at levels of from 30 g/l to 2.5 g/l.
compositions were tested in a robotised Miele G5953C (total water hardness 17°FH, including temporary hardness of 9°FH).
compositions were dosed at a level of 120 g/wash by sprinkling the powder in the base of the machine near the sieve; the main wash time was 20 minutes; the drying time with open door was 10-20 minutes; the washing temperature was up to 65°C.
Example 1 A Consecutive No. of runs before pump breakdown No breakdown 10

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Chemical & Material Sciences (AREA)
Health & Medical Sciences (AREA)
Emergency Medicine (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)
Detergent Compositions (AREA)

EP00303177A 1999-05-28 2000-04-14 Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen Expired - Lifetime EP1061123B2 (de)

Priority Applications (2)

Application Number	Priority Date	Filing Date	Title
EP00303177A EP1061123B2 (de)	1999-05-28	2000-04-14	Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen
TW094305092F TWD114205S1 (zh)	2000-04-14	2005-08-24	玩具車

Applications Claiming Priority (3)

Application Number	Priority Date	Filing Date	Title
EP99304182		1999-05-28
EP99304182		1999-05-28
EP00303177A EP1061123B2 (de)	1999-05-28	2000-04-14	Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen

Publications (3)

Publication Number	Publication Date
EP1061123A1 true EP1061123A1 (de)	2000-12-20
EP1061123B1 EP1061123B1 (de)	2004-06-30
EP1061123B2 EP1061123B2 (de)	2007-02-14

Family

ID=26073120

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP00303177A Expired - Lifetime EP1061123B2 (de)	1999-05-28	2000-04-14	Verfahren und Zusammensetzungen zum Reinigen von Geschirrspülmittelmaschinen

Country Status (1)

Country	Link
EP (1)	EP1061123B2 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2001062886A1 (en) *	2000-02-23	2001-08-30	The Procter & Gamble Company	Detergent tablet
FR2831181A1 (fr) *	2001-10-23	2003-04-25	Rhodia Polyamide Intermediates	Tablette antitartre acide et son utilisation en lavage automatique de la vaisselle
WO2006063231A1 (en) *	2004-12-08	2006-06-15	The Procter & Gamble Company	Method of cleaning a washing machine or a dishwasher
WO2007068920A1 (en) *	2005-12-13	2007-06-21	Reckitt Benckiser N.V.	Method and composition
DE102006009138A1 (de) *	2006-02-24	2007-08-30	Henkel Kgaa	Wasch- oder Reingiungsmittel
EP2039750A1 (de) *	2007-09-21	2009-03-25	Brauns-Heitmann GmbH & Co. KG	Mischung zum Entkalken, Reinigen und/oder Desinfizieren
DE102012014268A1 (de) *	2012-07-19	2014-01-23	Brauns-Heitmann Gmbh & Co. Kg	Vorrichtung zur Reinigung und/oder Entkalkung zur Verwendung in Geschirrspül- oder Waschmaschinen
EP2333042B1 (de)	2009-12-10	2015-07-01	The Procter and Gamble Company	Reinigungsmittelverwendung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1396678A (en) *	1972-12-07	1975-06-04	Hoechst Ag	Method for the automatic washing of tableware
US4392977A (en) *	1980-01-26	1983-07-12	Henkel Kommanditgesellschaft Auf Aktien	Liquid cleaning and maintenance composition especially for dishwashers
EP0256148A1 (de) *	1986-08-12	1988-02-24	Joh. A. Benckiser GmbH	Flüssiges, granuliertes oder pulverförmiges Reinigungsmittel, insbesondere für Geschirrspülmaschinen
EP0612843A1 (de) *	1993-02-22	1994-08-31	Unilever N.V.	Körnige saure Reiniger

2000
- 2000-04-14 EP EP00303177A patent/EP1061123B2/de not_active Expired - Lifetime

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB1396678A (en) *	1972-12-07	1975-06-04	Hoechst Ag	Method for the automatic washing of tableware
US4392977A (en) *	1980-01-26	1983-07-12	Henkel Kommanditgesellschaft Auf Aktien	Liquid cleaning and maintenance composition especially for dishwashers
EP0256148A1 (de) *	1986-08-12	1988-02-24	Joh. A. Benckiser GmbH	Flüssiges, granuliertes oder pulverförmiges Reinigungsmittel, insbesondere für Geschirrspülmaschinen
EP0612843A1 (de) *	1993-02-22	1994-08-31	Unilever N.V.	Körnige saure Reiniger

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2001062886A1 (en) *	2000-02-23	2001-08-30	The Procter & Gamble Company	Detergent tablet
US7153817B2 (en)	2000-02-23	2006-12-26	The Procter & Gamble Company	Detergent tablet
FR2831181A1 (fr) *	2001-10-23	2003-04-25	Rhodia Polyamide Intermediates	Tablette antitartre acide et son utilisation en lavage automatique de la vaisselle
WO2003035819A1 (fr) *	2001-10-23	2003-05-01	Rhodia Polyamide Intermediates	Tablette antitartre acide et son utilisation en lavage automatique de la vaisselle
WO2006063231A1 (en) *	2004-12-08	2006-06-15	The Procter & Gamble Company	Method of cleaning a washing machine or a dishwasher
WO2007068920A1 (en) *	2005-12-13	2007-06-21	Reckitt Benckiser N.V.	Method and composition
DE102006009138A1 (de) *	2006-02-24	2007-08-30	Henkel Kgaa	Wasch- oder Reingiungsmittel
EP2039750A1 (de) *	2007-09-21	2009-03-25	Brauns-Heitmann GmbH & Co. KG	Mischung zum Entkalken, Reinigen und/oder Desinfizieren
EP2098587A1 (de) *	2007-09-21	2009-09-09	Brauns-Heitmann GmbH & Co. KG	Mischung zum Entkalken, Reinigen und/oder Desinfizieren
EP2333042B1 (de)	2009-12-10	2015-07-01	The Procter and Gamble Company	Reinigungsmittelverwendung
DE102012014268A1 (de) *	2012-07-19	2014-01-23	Brauns-Heitmann Gmbh & Co. Kg	Vorrichtung zur Reinigung und/oder Entkalkung zur Verwendung in Geschirrspül- oder Waschmaschinen
DE102012014268B4 (de) *	2012-07-19	2014-02-20	Brauns-Heitmann Gmbh & Co. Kg	Vorrichtung zur Reinigung und/oder Entkalkung zur Verwendung in Geschirrspül- oder Waschmaschinen

Also Published As

Publication number	Publication date
EP1061123B1 (de)	2004-06-30
EP1061123B2 (de)	2007-02-14

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