EP2906098A1 - Ultrasonic method of cleaning - Google Patents
Ultrasonic method of cleaningInfo
- Publication number
- EP2906098A1 EP2906098A1 EP13780379.7A EP13780379A EP2906098A1 EP 2906098 A1 EP2906098 A1 EP 2906098A1 EP 13780379 A EP13780379 A EP 13780379A EP 2906098 A1 EP2906098 A1 EP 2906098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bleach
- ultrasound
- laundry
- detergent composition
- machine
- 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
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004140 cleaning Methods 0.000 title claims abstract description 20
- 239000007844 bleaching agent Substances 0.000 claims abstract description 44
- 238000002604 ultrasonography Methods 0.000 claims abstract description 35
- 239000002243 precursor Substances 0.000 claims description 23
- 239000000203 mixture Substances 0.000 claims description 21
- 239000003599 detergent Substances 0.000 claims description 20
- 238000004851 dishwashing Methods 0.000 claims description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- BGRWYDHXPHLNKA-UHFFFAOYSA-N Tetraacetylethylenediamine Chemical group CC(=O)N(C(C)=O)CCN(C(C)=O)C(C)=O BGRWYDHXPHLNKA-UHFFFAOYSA-N 0.000 claims description 7
- 239000012190 activator Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 239000003054 catalyst Substances 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical group [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical group [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 2
- RGVLTEMOWXGQOS-UHFFFAOYSA-L manganese(2+);oxalate Chemical group [Mn+2].[O-]C(=O)C([O-])=O RGVLTEMOWXGQOS-UHFFFAOYSA-L 0.000 claims description 2
- 239000002304 perfume Substances 0.000 claims description 2
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000003755 preservative agent Substances 0.000 claims description 2
- 230000002335 preservative effect Effects 0.000 claims description 2
- 229940045872 sodium percarbonate Drugs 0.000 claims description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000004913 activation Effects 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 2
- CQPFMGBJSMSXLP-UHFFFAOYSA-M acid orange 7 Chemical compound [Na+].OC1=CC=C2C=CC=CC2=C1N=NC1=CC=C(S([O-])(=O)=O)C=C1 CQPFMGBJSMSXLP-UHFFFAOYSA-M 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000004061 bleaching Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- UDATXMIGEVPXTR-UHFFFAOYSA-N 1,2,4-triazolidine-3,5-dione Chemical compound O=C1NNC(=O)N1 UDATXMIGEVPXTR-UHFFFAOYSA-N 0.000 description 1
- GLVYLTSKTCWWJR-UHFFFAOYSA-N 2-carbonoperoxoylbenzoic acid Chemical compound OOC(=O)C1=CC=CC=C1C(O)=O GLVYLTSKTCWWJR-UHFFFAOYSA-N 0.000 description 1
- XMSFZHWBBUOKRY-UHFFFAOYSA-N 2-octylbutanediperoxoic acid Chemical compound CCCCCCCCC(C(=O)OO)CC(=O)OO XMSFZHWBBUOKRY-UHFFFAOYSA-N 0.000 description 1
- YNJSNEKCXVFDKW-UHFFFAOYSA-N 3-(5-amino-1h-indol-3-yl)-2-azaniumylpropanoate Chemical compound C1=C(N)C=C2C(CC(N)C(O)=O)=CNC2=C1 YNJSNEKCXVFDKW-UHFFFAOYSA-N 0.000 description 1
- MHKLKWCYGIBEQF-UHFFFAOYSA-N 4-(1,3-benzothiazol-2-ylsulfanyl)morpholine Chemical compound C1COCCN1SC1=NC2=CC=CC=C2S1 MHKLKWCYGIBEQF-UHFFFAOYSA-N 0.000 description 1
- DRXNMGDERGTOJP-UHFFFAOYSA-N C1(=CC=CC=C1)S(=O)(=O)OOC(CCCCCC(C)C)=O.[Na] Chemical compound C1(=CC=CC=C1)S(=O)(=O)OOC(CCCCCC(C)C)=O.[Na] DRXNMGDERGTOJP-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000002835 absorbance Methods 0.000 description 1
- 125000000218 acetic acid group Chemical group C(C)(=O)* 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 125000005263 alkylenediamine group Chemical group 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- DRZOELSSQWENBA-UHFFFAOYSA-N benzene-1,2-dicarboperoxoic acid Chemical compound OOC(=O)C1=CC=CC=C1C(=O)OO DRZOELSSQWENBA-UHFFFAOYSA-N 0.000 description 1
- 150000001244 carboxylic acid anhydrides Chemical class 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical class O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- -1 hydratriazine Chemical class 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 description 1
- 238000010412 laundry washing Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002696 manganese Chemical class 0.000 description 1
- 229940071125 manganese acetate Drugs 0.000 description 1
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- SXLLDUPXUVRMEE-UHFFFAOYSA-N nonanediperoxoic acid Chemical compound OOC(=O)CCCCCCCC(=O)OO SXLLDUPXUVRMEE-UHFFFAOYSA-N 0.000 description 1
- 150000004967 organic peroxy acids Chemical class 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 150000004965 peroxy acids Chemical class 0.000 description 1
- PATMLLNMTPIUSY-UHFFFAOYSA-N phenoxysulfonyl 7-methyloctanoate Chemical compound CC(C)CCCCCC(=O)OS(=O)(=O)OC1=CC=CC=C1 PATMLLNMTPIUSY-UHFFFAOYSA-N 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- JTHRRMFZHSDGNJ-UHFFFAOYSA-N piperazine-2,3-dione Chemical compound O=C1NCCNC1=O JTHRRMFZHSDGNJ-UHFFFAOYSA-N 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- QSKQNALVHFTOQX-UHFFFAOYSA-M sodium nonanoyloxybenzenesulfonate Chemical compound [Na+].CCCCCCCCC(=O)OC1=CC=CC=C1S([O-])(=O)=O QSKQNALVHFTOQX-UHFFFAOYSA-M 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 description 1
- RPQSWSMNPBZEHT-UHFFFAOYSA-M sodium;2-acetyloxybenzenesulfonate Chemical compound [Na+].CC(=O)OC1=CC=CC=C1S([O-])(=O)=O RPQSWSMNPBZEHT-UHFFFAOYSA-M 0.000 description 1
- MIKSWWHQLZYKGU-UHFFFAOYSA-M sodium;2-benzoyloxybenzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1OC(=O)C1=CC=CC=C1 MIKSWWHQLZYKGU-UHFFFAOYSA-M 0.000 description 1
- PEVPCUFZCODDGN-UHFFFAOYSA-M sodium;2-dodecanoyloxybenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCC(=O)OC1=CC=CC=C1S([O-])(=O)=O PEVPCUFZCODDGN-UHFFFAOYSA-M 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- NVBFHJWHLNUMCV-UHFFFAOYSA-N sulfamide Chemical compound NS(N)(=O)=O NVBFHJWHLNUMCV-UHFFFAOYSA-N 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- AQLJVWUFPCUVLO-UHFFFAOYSA-N urea hydrogen peroxide Chemical compound OO.NC(N)=O AQLJVWUFPCUVLO-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/002—Washing machines, apparatus, or methods not otherwise provided for using bubbles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0002—Washing processes, i.e. machine working principles characterised by phases or operational steps
- A47L15/0007—Washing phases
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
- A47L15/0021—Regulation of operational steps within the washing processes, e.g. optimisation or improvement of operational steps depending from the detergent nature or from the condition of the crockery
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/4236—Arrangements to sterilize or disinfect dishes or washing liquids
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L15/00—Washing or rinsing machines for crockery or tableware
- A47L15/42—Details
- A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
-
- 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
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/06—Water heaters
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2501/00—Output in controlling method of washing or rinsing machines for crockery or tableware, i.e. quantities or components controlled, or actions performed by the controlling device executing the controlling method
- A47L2501/36—Other output
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/02—Pressurised cleaning liquid delivered by a pump
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
- A47L2601/00—Washing methods characterised by the use of a particular treatment
- A47L2601/17—Sonic or ultrasonic waves
-
- C11D2111/14—
-
- C11D2111/46—
Definitions
- wash temperatures may reach a max of only 30°C.
- This drop in wash temperature can provide significant energy savings.
- the amount of wash water used per wash cycle by modern machines has also steadily declined over the years.
- New ware washing machines now typically only use around 5L of water per cycle.
- the invention comprises the use of ultrasound energy to activate a bleach precursor in an aqueous cleaning system, wherein the ultrasound energy is not directly applied to the items to be cleaned.
- the aqueous cleaning system may comprise an automatic dishwashing machine or an automatic laundry washing machine.
- the aqueous cleaning system may also comprise a small portable device for activating bleach at low temperatures for hand dishwashing, hand laundry cleaning and general household hard surface cleaning.
- a small portable device for activating bleach at low temperatures for hand dishwashing, hand laundry cleaning and general household hard surface cleaning.
- the ultrasound is able to activate the bleach precursor at low temperatures.
- low temperature for the purposes of the present invention means from between 10 and 50°C. More specifically it means from between 20 and 40°C.
- ultrasound or “ultrasonic” applied to sound refers to anything above the frequencies of audible sound, and nominally includes anything over 20,000 Hz.
- frequencies used for medical diagnostic ultrasound scans may extend to 10 MHz and beyond.
- ultrasound may refer to any frequency of sound between 18 kHz and 10 MHz, preferably between 19 kH and 5 MHz and most preferably between 20 kHz and 1 MHz.
- the invention is effective across the whole range of this spectra.
- an ultrasonic method of cleaning soiled tableware in an automatic dishwashing or laundry machine utilising; a programmed wash cycle selected on the automatic dishwashing machine; a detergent composition comprising a bleach precursor; water; and ultrasonic energy; wherein the ultrasonic energy is not directly applied to the soiled tableware or laundry and wherein the ultrasonic energy is used to activate bleach in the wash liquor.
- US20070131250 A1 discloses an ultrasound drying mechanism for a dishwasher.
- US 5,218,980, US 3,854,998 and US 3,709,732 all disclose dishwasher systems that incorporate ultrasound generators to provide cleaning.
- a more recent disclosure looking at ultrasonic dishwashing is US2009120474 A1
- Ultrasound methods are generally accepted to work by providing localised heat and cavitation bubbles which provide localised scrubbing effects.
- Ultrasound in the prior art has been used to directly treat the surface of the tableware to be cleaned.
- the soiled tableware sits in a liquid medium and the sound waves are directed at the tableware or laundry.
- Ultrasound is used by the present invention to activate a bleach precursor in the wash liquor, the wash liquor is then used as normal within the dishwasher or laundry cleaning machine. I.e. The liquor may be pumped around and sprayed onto the dishes and other tableware or articles of clothing. The ultrasound energy is not used directly on the soiled tableware or laundry.
- the ultrasound is reducing the energy barrier for the decomposition of the bleach precursor. This allows the formation of the active bleach species at a much lower temperature than would normally be possible. Alternatively the ultrasound may be providing an alternative pathway for the decomposition.
- bleach refers for a large number of chemicals that remove colour, whiten or disinfect. There are two broad classes of common bleaches. Those that are based on chlorine and those based on oxygen.
- oxygen based bleaches are preferred.
- oxygen based bleaches are based on hydrogen peroxide. Due to its reactivity, hydrogen peroxide is not normally used directly in detergent compositions. A more stable precursor that can be broken down into hydrogen peroxide when needed is normally used.
- Non-limiting examples of common oxygen based bleach precursors include sodium percarbonate, sodium perborate sodium perphosphate, sodium persulphate and urea peroxide.
- organic peracids are also traditionally used as bleaches in detergent compositions.
- Preferred examples include perbenzoic acid and peroxycarboxylic acids especially mono- or diperoxyphthalic acid, 2- octyldiperoxysuccinic acid, diperoxydodecanedicarboxylic acid, diperoxy-azelaic acid, 6- phthalimidoperhexanoic acid (PAP) and imidoperoxycarboxylic acid and the derivatives and salts and mixtures thereof.
- the bleach precursor may be present between 1 and 50% by weight of the detergent composition, preferably between 5 and 30% by weight and most preferably between 10 and 25% by weight of the detergent composition.
- the quantity of detergent composition used per wash cycle may be between 5 and 100g, preferably 10 and 75g and most preferably between 15 and 50 g per wash cycle.
- the present invention is not limited to particular bleach precursors and may also be used with a combination of two or more different bleach precursors.
- the ultrasonic cleaning method is effective across a range of temperatures.
- the method disclosed may be effective even when using low temperature "ECO" cycles on newer machines.
- the method described may be effective when wash temperatures lower than 50°C are selected.
- the method may even be used when wash temperatures lower than 40°C are selected.
- the method described may be effective between 10 and 75°C, more preferably between 20 and 50°C and most preferably between 30 and 40°C.
- the method preferably includes a bleach activator.
- a preferred bleach activator is tetraacetyl ethylene diamine(TAED).
- bleach activators that may be included are one or more of an N- or O-Acyl compound, an acylated alkylene diamine, tetra acetyl glycouril, N-acylated hydantoine, hydrazine, triazole, hydratriazine, urazole, di-ketopiperazine, sulfurylamide, cyanurate, a carboxylic acid anhydride, sodium-acetoxy-benzene sulfonate, sodium-benzoyloxy benzene sulfonate (BOBS), sodium-lauroyloxy-benzene sulfonate (LOBS), sodium- isononanoyloxy benzene sulfonate (iso-NOBS), acylated sugar derivatives, pentaglucose, and sodium-nonanoyloxy benzene sulfonate (NOBS) or combinations thereof.
- the bleach activator may be present between 0.1 and 5
- the method may include the use of a bleach catalyst.
- a bleach catalyst Any suitable bleach catalyst may be used for example manganese acetate, manganese oxalate or di-nuclear manganese complexes such as those described in EP-A-1 ,741 ,774.
- the bleach catalyst may be present between 0.01 and 1 % by weight of the detergent composition.
- Any detergent composition suitable for use in an automatic or dishwashing machine that comprises a bleach precursor may be used in the present method.
- Example ADW compositions that may be used in the present invention may be found in WO 2008/075084. These are incorporated herein by reference.
- the detergent composition comprises one or more of the following additional components, dye, binder, builder, surfactant, preservative, perfume, phosphonate, and/or polymers.
- compositions used are preferably phosphate free.
- an automatic dishwasher comprising an ultrasound source, wherein the ultrasound emitter is located such that the ultrasound emitted does not contact the items to be cleaned directly.
- the emitter is located in the water flow system, such that the wash liquor is cycled past the emitter many times during the wash cycle. This also ensures that the ultrasound does not contact the items to be cleaned.
- the emitter will only be activated during low temperature wash cycles.
- the activation of the bleach precursors by ultrasound was studied the through the IR analysis of the degradation of a dye, Orange II.
- the precursor and the dye are placed together in a IR cell and the loss of dye colour monitored over time.
- the loss of dye colour correlates with activation of the bleach precursor into the active bleach species, as the active bleach quickly degrades the dye.
- the power transferred to the experimental system by the ultrasound was determined by way of calorimetric measurements .
- Two different sources were used for the generation of the ultrasound.
- the 20kHz sound was produced by a probe by Sonic & Materials Inc., #VCX600 and the two higher frequencies by a Meinhardt Ultrschalltechnik frequency generator #HM8001 -2 in combination with power amplifier #M 1 1-010.
- the 20kHz signal provided 21 watts to the experimental system while the higher frequency generator provided a much lower 0.8-1.2 watts to the experimental system.
- the ultrasonic energy applied to the wash liquor is at least 0.5 watts as measured calorimetrically.
- the ultrasonic energy applied to the wash liquor is in the range between 0.5 to 100 watts, more preferably between 10 and 50 watts and most preferably between 20 and 30 watts as measured calorimetrically.
- the ultrasonic energy supplied may be between 1 mW and 1 Watt, preferably between 10 mW and 500mW and most preferably between 50mW and 200mW.
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL13780379T PL2906098T3 (en) | 2012-10-15 | 2013-10-15 | Ultrasonic method of cleaning |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB1218415.6A GB201218415D0 (en) | 2012-10-15 | 2012-10-15 | Ultrasonic method of cleaning |
PCT/GB2013/052685 WO2014060738A1 (en) | 2012-10-15 | 2013-10-15 | Ultrasonic method of cleaning |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2906098A1 true EP2906098A1 (en) | 2015-08-19 |
EP2906098B1 EP2906098B1 (en) | 2017-12-27 |
Family
ID=47324738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13780379.7A Not-in-force EP2906098B1 (en) | 2012-10-15 | 2013-10-15 | Ultrasonic method of cleaning |
Country Status (7)
Country | Link |
---|---|
US (1) | US20150223666A1 (en) |
EP (1) | EP2906098B1 (en) |
AU (1) | AU2013333632B2 (en) |
ES (1) | ES2659799T3 (en) |
GB (1) | GB201218415D0 (en) |
PL (1) | PL2906098T3 (en) |
WO (1) | WO2014060738A1 (en) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US487474A (en) * | 1892-12-06 | Buckle for reins | ||
US1062904A (en) * | 1911-05-17 | 1913-05-27 | Frederick Randall Greene | Fluid-pressure motor. |
US5320775A (en) * | 1991-06-07 | 1994-06-14 | Lever Brothers Company, Division Of Conopco, Inc. | Bleach precursors with novel leaving groups |
SG81975A1 (en) * | 1998-04-14 | 2001-07-24 | Kaijo Kk | Method and apparatus for drying washed objects |
EP1062904A1 (en) * | 1999-06-21 | 2000-12-27 | The Procter & Gamble Company | In-sink micro-machine |
WO2001034742A1 (en) * | 1999-11-10 | 2001-05-17 | Unilever Plc | Automatic dishwashing compositions containing water soluble cationic surfactants |
IT248368Y1 (en) * | 1999-12-07 | 2003-01-28 | Compagnucci Spa | SPOOL FOR WINDING WIRES FORMED FROM AN ANNULAR SERIES MODULAR ELEMENTS IN FOLDED METAL BAR |
US6816555B2 (en) * | 2000-02-18 | 2004-11-09 | Sony Corporation | Signal component demultiplexing apparatus, filter apparatus, receiving apparatus, communication apparatus, and communication method |
AU2000279805A1 (en) * | 2000-10-06 | 2002-04-15 | Cavitas Pte Ltd (Singapore Company) | A method of and apparatus for washing a textile article |
DE10326438A1 (en) * | 2003-06-10 | 2004-12-30 | Jander, Lothar B., Dr. | Dishwasher with cleaning fluid and ultrasound e.g. for industrial and domestic applications, uses cleaning liquid as working medium consisting of water and additives |
JP4075860B2 (en) * | 2004-06-02 | 2008-04-16 | 松下電器産業株式会社 | dishwasher |
DE602005014418D1 (en) * | 2004-06-04 | 2009-06-25 | Panasonic Corp | Nebulizer and equipped with such a nebulizer dishwasher or washing machine |
EP1741774B1 (en) * | 2005-07-08 | 2008-08-06 | Unilever N.V. | Machine dishwashing compositions and their use |
DE102008045215A1 (en) * | 2008-08-30 | 2010-03-04 | Clariant International Ltd. | Use of manganese oxalates as bleaching catalysts |
-
2012
- 2012-10-15 GB GBGB1218415.6A patent/GB201218415D0/en not_active Ceased
-
2013
- 2013-10-15 US US14/429,724 patent/US20150223666A1/en not_active Abandoned
- 2013-10-15 WO PCT/GB2013/052685 patent/WO2014060738A1/en active Application Filing
- 2013-10-15 ES ES13780379.7T patent/ES2659799T3/en active Active
- 2013-10-15 AU AU2013333632A patent/AU2013333632B2/en not_active Ceased
- 2013-10-15 EP EP13780379.7A patent/EP2906098B1/en not_active Not-in-force
- 2013-10-15 PL PL13780379T patent/PL2906098T3/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2014060738A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2906098B1 (en) | 2017-12-27 |
AU2013333632B2 (en) | 2018-06-21 |
US20150223666A1 (en) | 2015-08-13 |
GB201218415D0 (en) | 2012-11-28 |
PL2906098T3 (en) | 2018-07-31 |
AU2013333632A1 (en) | 2015-05-07 |
ES2659799T3 (en) | 2018-03-19 |
WO2014060738A1 (en) | 2014-04-24 |
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