AU2001235839A1 - Ceramic dishwashing composition - Google Patents
Ceramic dishwashing compositionInfo
- Publication number
- AU2001235839A1 AU2001235839A1 AU2001235839A AU2001235839A AU2001235839A1 AU 2001235839 A1 AU2001235839 A1 AU 2001235839A1 AU 2001235839 A AU2001235839 A AU 2001235839A AU 2001235839 A AU2001235839 A AU 2001235839A AU 2001235839 A1 AU2001235839 A1 AU 2001235839A1
- Authority
- AU
- Australia
- Prior art keywords
- composition
- dishwasher
- corrosion
- glassware
- ceramic
- 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.)
- Granted
Links
Description
CERAMIC DISHWASHING COMPOSITION
The invention relates to a new type of use for a ceramic composition to protect glassware from corrosion during washing and/or rinsing cycles of a dishwasher, compositions intended for use in a dishwasher for the aforesaid purpose and a method of inhibiting the corrosion of glassware during washing and/or rinsing cycles of a dishwasher.
The problem of glassware corroding during washing and/or rinsing cycles of a dishwasher has long been known. Current opinion is that the problem of corrosion in glassware is the result of two separate phenomena. On the one hand, the corrosion is clearly due to minerals from the glass composition accompanied by hydrolysis of the silicate network. On the other hand, silicate material is released from the glass. After several washes in a dishwasher, both phenomena can cause damage to glassware such as cloudiness, scratches, streaks and similar .
Silicate compounds are known to be effective m preventing minerals from being released from the glass composition but on the other hand can tend to increase the separation of silicate material at the surface of tnε glass .
Various proposals have neen put forward as a means of dealing with the problems described above.
One approach is to use zinc, either in metallic form (US Patent No. 3,677,820) or in the form of zinc compounds. The use of soluble zinc salts as a means of preventing the corrosion of glassware in dishwasher cleansers is described in US Patent No. 3,255,117, for example .
Because of a number of disadvantages inherent in using soluble zinc salts (in particular the formation of a precipitate of insoluble zinc salts with other ions in the washing or rinsing water) , European patent applications EP 0 383 480, EP 0 383 482 and EP 0 387 997 propose the use of insoluble zinc compounds as a means of inhibiting corrosion of glassware in automatic dishwashers. Specifically, the insoluble zinc salts proposed are zinc silicate, zinc carbonate, zinc oxide, basic zinc carbonate (approximately: Zn2 (OH) 2C03) , zinc hydroxide, zinc oxalate, zinc monophosphate (Zn3(P04)2) and zinc pyrophosphate (Zn2(P207)) . If using zinc salts of this type in granular cleansing compounds, the insoluble zinc compound is specified as having a maximum particle size of less than 1.7 mm (EP 0 383 482), whilst a mean particle size of less than 250 μm is specified for the insoluble zinc compound used in a liquid dishwasher compound - (EP 0 383 480 and EP 0 387 997) .
The disadvantage of the prior art essentially resides in the fact that, because the zinc compounds are not re2adily soluble or are insoluble, it is difficult to ensure that a sufficient quantity of active agent will be present in the washing or rinsing liquid to protect glassware from corrosion. Furthermore, in view of the
high specific density of the insoluble zinc compounds listed, problems of separation arise with powdered mixtures or settlement in the case of liquid mixtures. Finally, all of the known compositions are intended to be active during only one specific stage of the washing cycle, i.e. if admixed with a granular cleanser composition during the washing cycle or if admixed with a liquid rinsing composition with the rinsing cycle. None of the known compositions has the capacity to become and remain active starting from the washing cycle and/or one of the intermediate rinsing cycles onwards.
The underlying ob ective of the present invention is to resolve one but preferably all of the existing problems outlined above.
This objective is achieved by the invention due to the use of a ceramic composition to protect glassware from corrosion, the ceramic composition being made using at least one compound which releases an active anti- corrosion agent during the washing and/or rinsing cycles of a dishwasher.
By preference, the compound (s) which release (s) an active agent to prevent corrosion during washing and/or rinsing cycles of a dishwasher is/are from the group consisting of the oxides of zinc, aluminium, tin, magnesium, calcium, strontium, silicon, titanium, zirconium, manganese and/or lanthanum and/or precursors thereof.
In one specific embodiment, the invention proposes that at least one of the compounds used should be zmc oxide and/or a precursor thereof.
By preference, the ceramic composition is used m tablet form.
Alternatively, the ceramic composition is used in crushed form, and more preferably m ground form.
The ground ceramic composition preferably has an average particle size of at most 500 μm.
The invention also relates to a composition for use in a dishwasher which contains an active quantity of a ceramic composition m crushed form to protect glassware against corrosion, the ceramic composition being made using at least one compound which releases an active agent to protect glassware from corrosion during washing and/or rinsing cycles of a dishwasher.
The ceramic composition is preferably used in ground form, more preferably with a mean particle size of at most 500 μm.
The composition proposed by the invention preferably contains the crushed ceramic composition m a quantity of from 0.1 to 10.0% by weight, more preferably m a quantity of from 0.5 to 5.0% by weight.
The invention also relates to a composition for use m a dishwasher m the form of a tablet containing an
active quantity of a ceramic composition to protect glassware against corrosion, the ceramic composition being made using at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
In one embodiment, the invention proposes that the compound (s) which release (s) an active agent to protect glassware from corrosion during washing and/or rinsing cycles of a dishwasher should be selected from the group consisting of the oxides of zinc, aluminium, tin, magnesium, calcium, strontium, silicon, titanium, zirconium, manganese and/or lanthanum.
In one particular embodiment, the invention proposes that at least one of the compounds should be zinc oxide and/or a precursor thereof.
Finally, the invention relates to a method of inhibiting the corrosion of glassware during washing and/or rinsing cycles of a dishwasher, characterised m that the glassware is brought into contact with washing or rinsing water containing an active quantity of the aforesaid composition containing a crushed ceramic composition.
Alternatively, a method of inhibiting the corrosion of glassware during washing and/or rinsing cycles of a dishwasher is proposed, m which the composition described above containing the ceramic composition is provided m tablet form, placed m the interior of the
dishwasher at a point which is accessible to the washing and/or rinsing water.
Before giving a detailed explanation of the features and advantages of the present invention, it should be pointed out that for the purpose of the present invention, the concept "ceramic composition" should be construed in its broadest sense, namely all materials made up of inorganic and predominantly non-metallic compounds or elements that are crystalline by reference to more than 30% by volume, in particular - but not restricted to - clay ceramic substances but also glass ceramic substances, for example.
The present invention solves at least one, and in preferred embodiments all the problems inherent in the prior art described above.
By using a ceramic substance as a "base" for one or more reagents to protect glassware from corrosion in a dishwasher, the problem caused by the extensive formation of precipitate from insoluble salts which result in an undesirable deposit, such as occurs with the prior art due to the use of soluble zinc salts for this purpose, are avoided. Instead, the active agents, such as zinc ions, are released from the ceramic compound proposed by the invention into the washing or rinsing water m a delayed release pattern but are not present in a high enough concentration to lead to an extensive and undesirable formation of insoluble salts. The disadvantages of using insoluble zinc compounds described
above are avoided by using the ceramic compositions proposed by the invention.
By using the ceramic composition proposed by the invention m ground form as an additive to standard dishwasher products, which are generally made as powders or liquids, the problem of separation described above is also resolved since the use of a ceramic composition offers greater flexibility in terms of adjusting the specific density to requirements.
If the ceramic composition proposed by the invention is provided m tablet form and placed in the interior of the dishwasher at a point which is accessible to the washing and/or rinsing water, e.g. n the cutlery basket, it will also provide, for the first time ever, active protection against corrosion throughout all washing and rinsing cycles, i.e. from the pre-rmse cycle through to the cleaning cycle and then the intermediate rinse cycles through to the final rinse cycle and, what is more, will last for several cycles. As a result, not only is glassware thoroughly protected against corrosion m the dishwasher, handling is made significantly easier and more convenient for the consumer.
If the ceramic composition proposed by the invention is used in crushed form, it may be ground m a grinder specifically suited to this purpose, for example, and an appropriate fraction of particles separated out, e.g. having an average grain particle of at most 500 μm.
The features of the invention disclosed m the description above and in the claims may be used individually or m any combination to apply the invention in its different embodiments .
The invention will now be described with reference to the following examples .
Example 1
In this example a ceramic material with the composition of Table I was prepared using the process described below:
Table 1
Process of preparation:
45 g Na3P0 anhydrous, 63 g NaH2P04 , 21 g Sι02 and 77 g Zr3P04 all anhydrous were homogeneously mixed and wetted with a small amount of water during steadily kneading of the mixture until a dough like plastic mass is obtained. The mass is left to stand for 2 hours at 30
°C during which time the mass swells due to the development of gas inside. The body is kneaded again to eliminate the gas and close the pores. The resulting mixture is fed into the die of a press machine having a rectangular cross-section of 8 x 8 cm2. The mixture was pressed to obtain a block. The block dries in between 12 hours at 35 °C to a solid block.
The block was then placed in an electric oven, which was heated up to 150°C at a speed of 50°C/hour. Once the temperature of 150°C is reached the heating rate is increased to 180 °C/hour until a temperature of 780 °C is reached and this temperature is then maintained for 24 hours . After this period the oven is brought back to room temperature at a rate of 180°C/hour.
Example 2 Table 2
The preparation, processing, forming and sintering of this composition was made following the same process explained for Example 1.
Example 3 Comparative tests on the glass-protecting performance of the composition of Example 1 were performed as explained below.
Pieces of glassware where washed 50 and 100 times in a dishwashing machine (Miele G540) using for each cleaning cycle 20 g of the commercial dishwashing detergent "Calgonit Ultra 2-Phases Powder" and setting the machine to a program running at a 65°C in the washing cycle and at 65°C in the rinsing cycle. The water hardness in the dishwashing machine was set to be 0,l°dGH and the average water consumption per wash was 23,5 1. In the rinsing cycle the machine was set to use 3 ml of the commercial rinse aid "Calgonit Klarspuller" .
The pieces of glassware used for the test were as follows :
Luigi Bormioli (Italy) :
" lmea Michelangelo David" C180, Stemglass, crystal glass Verreπe Cristalleπe D'Arques (France) :
"Luminarc Octime Transparent", Whiskeyglass 30cl "Longchamp" 17 cl; Stemglass, lead crystal glass "Luminarc Islande Dauphme", 33 cl, decorated longdπnkglass Ruhr Kπstall Glas (Germany) :
"Kolner Stange" ,24 cl, beer glass
New pieces of glassware were used for the test and each was weighted before the test started. After 50 or 100 complete washing cycles the pieces of glassware were removed from the dishwasher and their weight loss was determined gravimetncally .
Additionally the pieces of glassware were visually examined by a panel of trained people m two different environments: at daylight conditions and m a light chamber measuring 70 cm x 40 cm x 65 cm whose interior is covered with a matt black coating and which is illuminated with an Osram L20W25S lamp.
The results of the visual examination were recorded using the following scale:
The results on glass corrosion of the glassware when no special glass-protecting composition is used are recorded under the heading "Reference". The results obtained when the ceramic composition prepared in Example 1 was placed in the interior of the dishwashing machine at the start of the test are recorded under the heading "Ceramic".
Gravimetrical determination of glass corrosion
Visual determination of glass damages
The results from the preceding tables clearly show that the use of the ceramic compositions of the invention substantially reduces the corrosion of glassware when repeatedly washed in a dishwashing machine.
Claims (17)
1. Use of a ceramic composition to protect glassware from corrosion, the ceramic composition being made using at least one compound which releases an active agent to protect glassware from corrosion during washing and/or rinsing cycles of a dishwasher.
2. Use as claimed m claim 1, characterised m that the compound (s) which release (s) an active agent to protect glassware from corrosion during washing and/or rmsmg cycles of a dishwasher is/are selected from the group consisting of oxides of zinc, aluminium, tin, magnesium, calcium, strontium, silicon, titanium, zirconium, manganese and/or lanthanum and/or precursors thereof.
3. Use as claimed m claim 2, characterised m that at least one of the compounds is zinc oxide and/or a precursor thereof.
4. Use as claimed m one of the preceding claims, characterised m that the ceramic composition is used m tablet form.
5. Use as claimed in one of claims 1 to 3, characterised m that the ceramic composition is used m crushed form.
6. Use as claimed in claim 5, characterised m that the ceramic composition is used in ground form.
7. Use as claimed m claim 6, characterised in that the ground ceramic composition has an average particle size of at most 500 μm.
8. Composition for use m a dishwasher, characterised m that it contains an active quantity of a ceramic composition m ground form to protect glassware from corrosion, the ceramic composition being made using at least one compound which releases an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion.
9. Composition as claimed in claim 8, characterised m that the ceramic composition is provided in ground form.
10. Composition as claimed m claim 9, characterised in that the ground ceramic composition has an average particle size of at most 500 μm.
11. Composition as claimed in one of claims 8 to 10, characterised in that the crushed, ceramic compound is present m a quantity of from 0.1 to 10.0 by weight.
12. Composition as claimed m claim 11, characterised m that the crushed ceramic compound is present m a quantity of from 0.5 to 5.0% by weight.
13. Composition for use in a dishwasher, characterised m that it contains an active quantity of a ceramic composition in tablet form to prevent the corrosion of glassware, the ceramic composition being made using at least one compound which releases an active agent during washing and/or rinsing cycles in a dishwasher to protect glassware from corrosion.
14. Composition as claimed m one of claims 8 to 13, characterised m that the compound (s) which release (s) an active agent during washing and/or rinsing cycles of a dishwasher to protect glassware from corrosion is/are selected from the group consisting of the oxides of zmc, aluminium, tin, magnesium, calcium, strontium, silicon, titanium, zirconium, manganese and/or lanthanum.
15. Composition as claimed in claim 14, characterised in that at least one of the compounds is zmc oxide and/or a precursor thereof.
16. Method for inhibiting the corrosion of glassware during washing and/or rmsmg cycles of a dishwasher, characterised m that the glassware is brought m to contact with washing and/or rmsmg water containing an active quantity of a composition as claimed in one of claims 8 to 12 or 14 to 15, as dependent on one of claims 8 to 12.
17. Method of inhibiting the corrosion of glassware during washing and/or rmsmg cycles of a dishwasher, characterised in that a composition as claimed m claim 13 or 14 and 15, as dependent on claim 13, is placed m the interior of the dishwasher at a point accessible to the washing and/or rinsing water.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10010209.3 | 2000-03-02 | ||
DE10010209A DE10010209A1 (en) | 2000-03-02 | 2000-03-02 | Use of ceramic dishwashing composition for protection of glassware from corrosion, involves using ceramic composition comprising at least one compound which releases active agent to protect glassware |
PCT/GB2001/000910 WO2001064823A1 (en) | 2000-03-02 | 2001-03-02 | Ceramic dishwashing composition |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2001235839A1 true AU2001235839A1 (en) | 2001-11-22 |
AU2001235839B2 AU2001235839B2 (en) | 2006-02-23 |
Family
ID=7633261
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2001235839A Ceased AU2001235839B2 (en) | 2000-03-02 | 2001-03-02 | Ceramic dishwashing composition |
AU3583901A Pending AU3583901A (en) | 2000-03-02 | 2001-03-02 | Ceramic dishwashing composition |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU3583901A Pending AU3583901A (en) | 2000-03-02 | 2001-03-02 | Ceramic dishwashing composition |
Country Status (15)
Country | Link |
---|---|
US (2) | US6806245B2 (en) |
EP (1) | EP1259587B2 (en) |
JP (1) | JP2004529990A (en) |
CN (1) | CN1262631C (en) |
AT (1) | ATE259411T1 (en) |
AU (2) | AU2001235839B2 (en) |
BR (1) | BR0108848A (en) |
CA (1) | CA2401156C (en) |
DE (2) | DE10010209A1 (en) |
ES (1) | ES2214395T5 (en) |
GB (1) | GB2361708B (en) |
MX (1) | MXPA02008555A (en) |
PL (1) | PL200531B1 (en) |
WO (1) | WO2001064823A1 (en) |
ZA (1) | ZA200207793B (en) |
Families Citing this family (23)
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DE10010209A1 (en) † | 2000-03-02 | 2001-09-13 | Reckitt Benckiser Nv | Use of ceramic dishwashing composition for protection of glassware from corrosion, involves using ceramic composition comprising at least one compound which releases active agent to protect glassware |
GB2372500B (en) * | 2001-02-22 | 2003-08-20 | Reckitt Benckiser Nv | Process for Inhibition of Corrosion of Glassware during Automatic Dishwashing |
GB0203126D0 (en) * | 2002-02-09 | 2002-03-27 | Reckitt Benckiser Nv | Glassware corrosion inhibitor |
AU2002352452B2 (en) | 2002-02-09 | 2007-06-21 | Reckitt Benckiser N.V. | Glassware corrosion inhibitor |
CA2505665A1 (en) * | 2002-11-14 | 2004-06-03 | The Procter & Gamble Company | Rinse aid containing encapsulated glasscare active salt |
US7033980B2 (en) * | 2002-11-14 | 2006-04-25 | The Procter & Gamble Company | Automatic dishwashing detergent composition comprising encapsulated glasscare active salt |
GB2402132B (en) | 2003-05-28 | 2005-10-19 | Reckitt Benckiser Nv | Dishwasher anti-corrosion composition |
US7135448B2 (en) | 2003-07-02 | 2006-11-14 | Ecolab Inc. | Warewashing composition for use in automatic dishwashing machines, comprising a mixture of aluminum and zinc ions |
US7196044B2 (en) | 2003-07-02 | 2007-03-27 | Ecolab, Inc. | Warewashing composition for use in automatic dishwashing machines, comprising a zinc ion and aluminum ion corrosion inhibitor |
US7241726B2 (en) | 2003-10-16 | 2007-07-10 | The Procter & Gamble Company | Complete-cycle methods for protecting glassware from surface corrosion in automatic dishwashing appliances |
US7094740B2 (en) * | 2003-10-16 | 2006-08-22 | The Procter & Gamble Company | Zinc corrosion protection agents for treating glassware surfaces |
ATE394462T1 (en) * | 2003-10-17 | 2008-05-15 | Reckitt Benckiser Nv | COMPOSITION FOR PROTECTING GLASS WASHABLES IN DISHWASHERS |
GB0324295D0 (en) * | 2003-10-17 | 2003-11-19 | Reckitt Benckiser Nv | Composition |
BRPI0415498B1 (en) * | 2003-10-17 | 2014-07-15 | Reckitt Benckiser Nv | Water Soluble Glass Composition |
US20060174883A1 (en) * | 2005-02-09 | 2006-08-10 | Acoba, Llc | Method and system of leak detection in application of positive airway pressure |
US7759299B2 (en) * | 2006-07-24 | 2010-07-20 | Ecolab Inc. | Warewashing composition for use in automatic dishwashing machines |
ES2618291T3 (en) * | 2007-05-04 | 2017-06-21 | Ecolab Inc. | Compositions that include hardness and gluconate ions and procedures that use them to reduce corrosion and etching |
US20090082245A1 (en) * | 2007-05-04 | 2009-03-26 | Ecolab Inc. | Method for formulating a branded cleaning product |
US20090099054A1 (en) * | 2007-05-04 | 2009-04-16 | Ecolab Inc. | Method for formulating a reduced phosphorus branded cleaning product or cleaning system |
GB0815022D0 (en) | 2008-08-16 | 2008-09-24 | Reckitt Benckiser Nv | Composition |
US20110021410A1 (en) * | 2009-07-27 | 2011-01-27 | Ecolab Usa Inc. | Novel formulation of a ware washing solid controlling hardness |
US8883035B2 (en) | 2009-07-27 | 2014-11-11 | Ecolab Usa Inc. | Formulation of a ware washing solid controlling hardness |
IN2014CN03506A (en) * | 2011-10-19 | 2015-10-09 | Basf Se |
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-
2000
- 2000-03-02 DE DE10010209A patent/DE10010209A1/en not_active Ceased
-
2001
- 2001-03-02 AU AU2001235839A patent/AU2001235839B2/en not_active Ceased
- 2001-03-02 MX MXPA02008555A patent/MXPA02008555A/en active IP Right Grant
- 2001-03-02 ES ES01907975T patent/ES2214395T5/en not_active Expired - Lifetime
- 2001-03-02 GB GB0105217A patent/GB2361708B/en not_active Expired - Fee Related
- 2001-03-02 PL PL364996A patent/PL200531B1/en unknown
- 2001-03-02 JP JP2001564310A patent/JP2004529990A/en not_active Abandoned
- 2001-03-02 CN CNB018059422A patent/CN1262631C/en not_active Expired - Fee Related
- 2001-03-02 CA CA2401156A patent/CA2401156C/en not_active Expired - Fee Related
- 2001-03-02 AT AT01907975T patent/ATE259411T1/en not_active IP Right Cessation
- 2001-03-02 DE DE60101998T patent/DE60101998T3/en not_active Expired - Lifetime
- 2001-03-02 EP EP01907975A patent/EP1259587B2/en not_active Expired - Lifetime
- 2001-03-02 BR BR0108848-3A patent/BR0108848A/en not_active Application Discontinuation
- 2001-03-02 WO PCT/GB2001/000910 patent/WO2001064823A1/en active IP Right Grant
- 2001-03-02 AU AU3583901A patent/AU3583901A/en active Pending
-
2002
- 2002-09-03 US US10/234,419 patent/US6806245B2/en not_active Expired - Lifetime
- 2002-09-27 ZA ZA200207793A patent/ZA200207793B/en unknown
-
2004
- 2004-05-18 US US10/848,477 patent/US7179776B2/en not_active Expired - Lifetime
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