EP0103466B1 - Ofenreinigungsmittel - Google Patents

Ofenreinigungsmittel Download PDF

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Publication number
EP0103466B1
EP0103466B1 EP83305244A EP83305244A EP0103466B1 EP 0103466 B1 EP0103466 B1 EP 0103466B1 EP 83305244 A EP83305244 A EP 83305244A EP 83305244 A EP83305244 A EP 83305244A EP 0103466 B1 EP0103466 B1 EP 0103466B1
Authority
EP
European Patent Office
Prior art keywords
oven cleaner
oven
cleaner
alkali metal
polyhydric alcohol
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
Application number
EP83305244A
Other languages
English (en)
French (fr)
Other versions
EP0103466A1 (de
Inventor
Raymond Neville Silvester
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.)
R&C Products Pty Ltd
Original Assignee
R&C Products Pty Ltd
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 R&C Products Pty Ltd filed Critical R&C Products Pty Ltd
Priority to AT83305244T priority Critical patent/ATE27716T1/de
Publication of EP0103466A1 publication Critical patent/EP0103466A1/de
Application granted granted Critical
Publication of EP0103466B1 publication Critical patent/EP0103466B1/de
Expired legal-status Critical Current

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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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5004—Organic solvents
    • C11D7/5022—Organic solvents containing oxygen
    • 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
    • C11D3/0057—Oven-cleaning 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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/10—Salts
    • C11D7/12—Carbonates bicarbonates
    • 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
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/261—Alcohols; Phenols

Definitions

  • the present invention relates to an improved oven cleaner and to a method for removing baked on fats and greases from cooking surfaces.
  • Oven cleaners are compositions of matter used to remove baked on fats and greases from cooking surfaces. Such compositions are commonly used for cleaning ovens as the name implies but may also be used to clean other cooking surfaces on which there has been a build up of baked on fats and greases. Such surfaces include fry pans, kitchenware, barbecue equipment, cooking utensils and the like. These surfaces may be of bare metal, metal coated as with baked enamel, glazed stoneware, porcelain, glass or the like.
  • oven cleaners are based on caustic soda. It has generally been considered necessary to use a caustic alkali in order to effectively saponify the fats in the baked on material in order to enable its removal.
  • a few oven cleaners have been based on solvents, acetate salts, amines or ammonia.
  • the known caustic based systems suffer from the disadvantage of being quite hazardous and/or require the consumer to wear gloves during usage. These known caustic-based systems are required to carry poisons schedule labelling and warning statements.
  • the systems based on acetate salts have the disadvantage that they require temperatures of 250°C or above to activate them.
  • GB-A-1 478 482 and GB-A-1 478 481 both provide oven cleaning compositions which include, as essential ingredients, an aliphatic compound such as glycerol having two or more hydroxy groups, and up to 2% by weight of an alkaline-acting catalyst such as an alkali metal carbonate.
  • an alkaline-acting catalyst such as an alkali metal carbonate.
  • oven cleaners effective at temperatures of at least 121°C (250°F) are provided.
  • GB-A-1576454 provides a similar oven cleaner utilizing an alkali metal bicarbonate, but also essentially requiring an alkali metal salt of a weak organic acid to provide a suitable oven cleaner effective at temperatures of at least 121°C (250°F).
  • an oven cleaner comprising an effective amount of a polyhydric alcohol which is a liquid and non-volatile at a temperature of at least 125°C at atmospheric pressure, and an alkali metal salt soluble therein at said temperature, said oven cleaner not containing alkali metal salts of weak organic acids and wherein the alkali metal salt is non-caustic and selected from an alkali metal carbonate or bicarbonate or sesquicarbonate, or mixtures thereof in an amount of from more than 2% by weight of the cleaner.
  • the present invention further consists of applying the oven cleaner according to this invention to a cooking surface carrying baked on fats or greases, heating the cooking surface at atmospheric pressure to at least 125°C, and preferably from 125 to 250°C, for a period of at least five minutes and washing and/or wiping the saponified fats or greases from the cooking surface.
  • the oven cleaner according to the present invention may have a pH as low as 9 or less which allows its use without rubber gloves and like protective clothing. These oven cleaners also have the advantage that surfaces of stainless steel, aluminium, and some other metals will be left with a shiny surface after cleaning rather than being left with a dull, oxidised surface as is the case with many of the prior art oven cleaning compositions.
  • the non-caustic alkali metal salt is most preferably sodium or potassium bicarbonate.
  • alkali salts which can be advantageously used include sodium or potassium sesquicarbonate.
  • the alkaline salts preferably comprise from more than 2 to 20% by weight of the product.
  • the pH of the product is preferably below 11 and more preferably below 10 and most preferably 9 or below.
  • the polyhydric alcohol used in the present invention preferably have the general formula:
  • the alcohol is most preferably glycerol or includes glycerol.
  • Other compounds in this group which may be used include mannitol, ethylene glycol and sorbitol.
  • the salt is a potassium salt
  • the polyhydric alcohol may with equal effectiveness be an alcohol falling outside the above general formula. This is believed to be due to the higher solubility of the potassium salts in the polyols as compared with the corresponding sodium salt.
  • Polyhydric alcohols which work efficiently with the potassium salts include various grades of propylene glycol, diethylene glycol, polyethylene glycol, dipropylene glycol, polypropylene glycol, triethylene glycol, and 1,2,6-hexanetriol.
  • the polyhydric alcohol preferably comprises from 1 to 50% by weight of the product.
  • the oven cleaner according to this invention preferably includes water.
  • the water is preferably present in an amount of at least 35% by weight.
  • the oven cleaner is preferably water based and preferably contains a thickener to prevent it running off vertical surfaces.
  • Other ingredients may include a surfactant or soap, a fragrance, a pigment marker and a propellant.
  • the oven cleaner according to this invention may be applied in any suitable manner. These include an aerosol, a trigger or pump spray, a brush or pad.
  • the oven cleaner is preferably applied to a surface to be cleaned and heated to a temperature of from 125°C to 250°C for a time of from 5 minutes to 2 hours.
  • oven cleaners according to this invention are effective, despite their limited alkalinity and the evaporation of the water from the cleaner, due to the continued action of the alkaline salt dissolved in the non-volatile polyhydric alcohol.
  • the alkaline salt is maintained in a condition in which it is available for reaction with the baked on fats and greases at the required elevated temperature by being dissolved in the polyhydric alcohol. For this reason the polyhydric alcohol is required to be substantially non-volatile at the cleaning temperature.
  • Test surfaces were prepared by baking smeared dripping onto white vitreous enamel metal plates for 1 1/2 hours at 250°C. The baked-on dripping could not be removed at all by washing or wiping without a scourer.
  • Cleaners consisting of the formulations given below were applied to the test surfaces to be cleaned from a trigger pack after shaking well.
  • test plates were then heated in an oven for 30 minutes to a final temperature of 150°C.
  • test plates were then either rinsed under a fast running tap or wiped wiwh a damp sponge and the percentage removal of baked-on dripping recorded.
  • a cleaner consisting of the following formulation was applied to a test surface to be cleaned, prepared as for Examples 1-9 from an aerosol pack after shaking well. The test was then carried out in the same manner as for Examples 1-9.
  • a cleaner consisting of the following formulation was brushed onto a test surface to be cleaned, prepared as for Examples 1-8. The test was then carried out in the same manner as for Example 1-9.
  • composition according to Examples for instance, 1 to 5 was equal to that of a molar equivalent active level of caustic soda in the same formulation base.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Claims (14)

1. Ofenreinigungsmittel, enthaltend eine wirksame Menge eines mehrwertigen, bei mindestens 125°C und Atmosphärendruck flüssigen und nicht flüchtigen Alkohols und eines bei dieser Temperatur löslichen Alkalimetallsalzes, vorausgesetzt, daß es kein Alkalimetallsalz einer schwachen organischen Säure ist, in dem das Alkalimetallsalz nicht ätzend und ein Alkalimetallcarbonat und/oder -hydrogencarbonat und/oder -sesquicarbonat in einer Menge von über 2 Gew.-%, bezogen auf das Ofenreinigungsmittel, ist.
2. Ofenreinigungsmittel nach Anspruch 1, in dem der mehrwertige Alkohol die allgemeine Formel
Figure imgb0023
hat, wobei n=0, 1, 2, 3 oder 4.
3. Ofenreinigungsmittel nach Anspruch 1, in dem das Alkalimetallsalz ein Kaliumsalz ist und der mehrwertige Alkohol unter Propylenglycol, Diethylenglycol, Polyethylenglycol, Dipropylenglycol, Polypropylenglycol, Triethylenglycol und 1,2,6-Hexantriol gewählt wird.
4. Ofenreinigungsmittel nach einem der vorstehenden Ansprüche mit einem Wassergehalt von mindestens 35 Gew.-%.
5. Ofenreinigungsmittel nach einem der vorstehenden Ansprüche mit einem Gehalt an Alkalimetallsalz von über 2 bis zu 20 Gew.-%, bezogen auf das Ofenreinigungsmittel.
6. Ofenreinigungsmittel nach einem der Ansprüche 1, 2, 4 und 5, in dem das Alkalimetallsalz ein Natrium- oder Kaliumsalz ist.
7. Ofenreinigungsmittel nach einem der vorstehenden Ansprüche, in dem die wirksame Menge des mehrwertigen Alkohols von 1 bis 50 Gew.-%, bezogen auf das Ofenreinigungsmittel, beträgt.
8. Ofenreinigungsmittel nach einem der Ansprüche 1, 2 und 4 bis 7, in dem der mehrwertige Alkohol Glycerin ist.
9. Ofenreinigungsmittel nach einem der vorstehenden Ansprüche mit einem pH-Wert unter 11.
10. Ofenreinigungsmittel nach einem der Ansprüche 1 bis 8 mit einem pH-Wert unter 10.
11. Ofenreinigungsmittel nach einem der Ansprüche 1 bis 8 mit einem pH-Wert von 9 oder darunter.
12. Ofenreinigungsmittel nach einem der vorstehenden Ansprüche mit einem zusätzlichen Gehalt an einem grenzflächenaktiven Mittel, einem Duftstoff, Markierungspigment, Treibmittel, Eindickmittel oder einem Gemisch von mindestens zwei dieser Bestandteile.
13. Verfahren zur Reinigung einer mit angebranntem Fett oder Verkrustungen verunreingiten Kochfläche, in dem ein Ofenreinigungsmittel nach einem der Ansprüche 1 bis 12 auf die Kochfläche aufgebracht wird, die Kochfläche auf mindestens 125°C bei Atmosphärendruck mindestens 5 Minuten erhitzt wird und die verseiften Fette von der Kochfläche abgewaschen und/oder abgewischt werden.
14. Verfahren zur Reinigung einer mit angebranntem Fett oder Verkrustungen verunreinigten Kochfläche nach Anspruch 13, in dem die Kochfläche auf eine Temperatur von 125 bis 250°C bei Atmosphärendruck erhitzt wird.
EP83305244A 1982-09-09 1983-09-08 Ofenreinigungsmittel Expired EP0103466B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83305244T ATE27716T1 (de) 1982-09-09 1983-09-08 Ofenreinigungsmittel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPF582082 1982-09-09
AU5820/82 1982-09-09

Publications (2)

Publication Number Publication Date
EP0103466A1 EP0103466A1 (de) 1984-03-21
EP0103466B1 true EP0103466B1 (de) 1987-06-10

Family

ID=3769740

Family Applications (1)

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EP83305244A Expired EP0103466B1 (de) 1982-09-09 1983-09-08 Ofenreinigungsmittel

Country Status (7)

Country Link
EP (1) EP0103466B1 (de)
AT (1) ATE27716T1 (de)
DE (1) DE3372000D1 (de)
ES (1) ES525816A0 (de)
MY (1) MY102376A (de)
NZ (1) NZ205464A (de)
ZA (1) ZA836720B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5380454A (en) * 1993-07-09 1995-01-10 Reckitt & Colman Inc. Low temperature non-caustic oven cleaning composition
JP3683600B2 (ja) * 1994-06-30 2005-08-17 ミネソタ マイニング アンド マニュファクチャリング カンパニー 洗浄剤組成物
US7135446B1 (en) * 2002-01-28 2006-11-14 Diamondite, L.L.C. System for cleaning and protecting windshields
WO2005023971A1 (en) * 2003-09-03 2005-03-17 Johnsondiversey, Inc. Cleaning composition
JP7312431B2 (ja) * 2019-05-30 2023-07-21 株式会社ニイタカ 加熱調理機器用液体洗浄剤組成物及び加熱調理機器の洗浄方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881948A (en) * 1973-07-20 1975-05-06 Church & Dwight Co Inc Method for removing organic acid soil from surfaces
US4193886A (en) * 1976-04-22 1980-03-18 Church & Dwight Co., Inc. Novel low temperature cleaner
DE3124348A1 (de) * 1980-07-02 1982-04-01 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur entfernung von phosphat- und/oder reaktionsschmiermittelschichten

Also Published As

Publication number Publication date
MY102376A (en) 1992-06-17
EP0103466A1 (de) 1984-03-21
DE3372000D1 (en) 1987-07-16
ES8507603A1 (es) 1985-10-01
ES525816A0 (es) 1985-10-01
NZ205464A (en) 1986-08-08
ZA836720B (en) 1984-06-27
ATE27716T1 (de) 1987-06-15

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