EP0353973A2 - Phosphate-free detergents - Google Patents
Phosphate-free detergents Download PDFInfo
- Publication number
- EP0353973A2 EP0353973A2 EP89307758A EP89307758A EP0353973A2 EP 0353973 A2 EP0353973 A2 EP 0353973A2 EP 89307758 A EP89307758 A EP 89307758A EP 89307758 A EP89307758 A EP 89307758A EP 0353973 A2 EP0353973 A2 EP 0353973A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- salt
- acid
- methylenephosphonic
- water
- composition according
- 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.)
- Withdrawn
Links
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
- C11D3/36—Organic compounds containing phosphorus
- C11D3/364—Organic compounds containing phosphorus containing nitrogen
-
- 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
- C11D3/36—Organic compounds containing phosphorus
- C11D3/361—Phosphonates, phosphinates or phosphonites
Definitions
- This invention relates to detergents which are free of phosphates.
- an object of the present invention is to provide such substances especially, but not exclusively, for use in the cleaning of laboratories and laboratory glassware.
- the invention accordingly provides a detergent composition free of phosphates and comprising a phosphonic sequestrant.
- Preferred active ingredients are pentasodium salt of ethylenediaminetetra(methylenephosphonic) acid and/or heptasodium salt of diethylenetriaminepenta(methylenephosphonic) acid.
- the composition may further comprise one or more of a foaming agent, a surfactant, a wetting agent, and a homogenisation-promoting agent.
- composition is preferably in the form of an aqueous solution.
- the product was filtered through muslin as it was dispensed.
- Aerosol OT 75 (By Cyanamid BV, Botlek, Rotterdam) comprises sodium sulphosuccinate in a mixture of ethanol and water, and is present as a foaming agent.
- Butyl diglycol ether (butyl diglycol; diethylene glycol monobutyl ether) is commercially available (e.g. from Tennants (Lancashire) Ltd., Chetham, Manchester) and is present to promote homogenisation.
- Dequest (trade mark) 2046 and 2066 are available from Monsanto plc, Chineham, Basingstoke. Both are sequestrants, Dequest 2046 being pentasodium salt of ethylenediaminetetra (methylenephosphonic) acid, and Dequest 2066 being heptasodium salt of diethylenetriaminepenta (methylenephosphonic) acid.
- This mixture is useful as a general detergent for laboratory use.
- SXS-30 is sodium xylene sulphonate from Lankro Chemicals Limited, Eccles, Manchester, and is present as a solubilising agent.
- Surfynol 104E (trade mark) by Air Products and Chemicals Inc., Wayne, Pennsylvania is a wetting agent and comprises 2, 4, 7, 9 - tetramethyl - 5 decyn - 4, 7 diol in ethylene glycol (50%).
- Triton CF21 (trade mark) by Rohm and Haas, Philadelphia is a liquid anhydrous nonionic alkyl aryl polyether low-foaming surfactant.
- the product of this example is useful as a detergent for automatic washers, especially for laboratory use.
- Example 1 The product of Examples 1 and 2 are liquids with specific gravities slightly in excess of 1.0. It would also be possible to produce the formulation of Example 2 as a powder.
- Dequest 2046 and Dequest 2066 in the above examples may be varied, and other sequestrants of the Dequest series may be substituted. If an acidic sequestrant is used, it may be necessary to include an alkali in the mixture to obtain the desired detergent pH. Alternative sequestrants are EDTA, NTA, and their derivatives. If a surfactant is present, the sequestrant must be limited to an amount compatible therewith without precipitation, the maximum likely to be 75% by weight of the constituents other than water.
Abstract
Description
- This invention relates to detergents which are free of phosphates.
- Conventional detergents rely on the use of phosphates, but these phosphates in waste outfalls degrade hydrolitically to orthophosphates which cause overgrowth of algae in sewers and water courses, and contribute to eutrophication of lakes.
- There is therefore a need for substances which are effective as detergents while being free of phosphates, and an object of the present invention is to provide such substances especially, but not exclusively, for use in the cleaning of laboratories and laboratory glassware.
- The invention accordingly provides a detergent composition free of phosphates and comprising a phosphonic sequestrant.
- Preferred active ingredients are pentasodium salt of ethylenediaminetetra(methylenephosphonic) acid and/or heptasodium salt of diethylenetriaminepenta(methylenephosphonic) acid.
- The composition may further comprise one or more of a foaming agent, a surfactant, a wetting agent, and a homogenisation-promoting agent.
- The composition is preferably in the form of an aqueous solution.
- Specific examples of the invention will now be described.
- The following ingredients were added to a vat in the order stated and mixed with a paddle.
Aerosol OT 75 40.80 kg Butyl diglycol ether 10.72 kg Dequest 2046 75.90 kg Dequest 2066 8.50 kg Water to 800 litres - After thorough mixing, the product was filtered through muslin as it was dispensed.
- Aerosol OT 75 (By Cyanamid BV, Botlek, Rotterdam) comprises sodium sulphosuccinate in a mixture of ethanol and water, and is present as a foaming agent.
- Butyl diglycol ether (butyl diglycol; diethylene glycol monobutyl ether) is commercially available (e.g. from Tennants (Lancashire) Ltd., Chetham, Manchester) and is present to promote homogenisation.
- Dequest (trade mark) 2046 and 2066 are available from Monsanto plc, Chineham, Basingstoke. Both are sequestrants, Dequest 2046 being pentasodium salt of ethylenediaminetetra (methylenephosphonic) acid, and Dequest 2066 being heptasodium salt of diethylenetriaminepenta (methylenephosphonic) acid.
- This mixture is useful as a general detergent for laboratory use.
- The following mixture was prepared by the same procedure as in Example 1:
SXS-30 212.00 kg Surfynol 104E 38.40 kg Triton CF21 61.00 kg Dequest 2046 47.00 kg Dequest 2066 5.20 kg Water to 800 litres - SXS-30 is sodium xylene sulphonate from Lankro Chemicals Limited, Eccles, Manchester, and is present as a solubilising agent.
- Surfynol 104E (trade mark) by Air Products and Chemicals Inc., Wayne, Pennsylvania is a wetting agent and comprises 2, 4, 7, 9 - tetramethyl - 5 decyn - 4, 7 diol in ethylene glycol (50%).
- Triton CF21 (trade mark) by Rohm and Haas, Philadelphia is a liquid anhydrous nonionic alkyl aryl polyether low-foaming surfactant.
- The product of this example is useful as a detergent for automatic washers, especially for laboratory use.
- The product of Examples 1 and 2 are liquids with specific gravities slightly in excess of 1.0. It would also be possible to produce the formulation of Example 2 as a powder.
- The proportions of Dequest 2046 and Dequest 2066 in the above examples may be varied, and other sequestrants of the Dequest series may be substituted. If an acidic sequestrant is used, it may be necessary to include an alkali in the mixture to obtain the desired detergent pH. Alternative sequestrants are EDTA, NTA, and their derivatives. If a surfactant is present, the sequestrant must be limited to an amount compatible therewith without precipitation, the maximum likely to be 75% by weight of the constituents other than water.
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8818215 | 1988-07-30 | ||
GB888818215A GB8818215D0 (en) | 1988-07-30 | 1988-07-30 | Phosphate-free detergent |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0353973A2 true EP0353973A2 (en) | 1990-02-07 |
EP0353973A3 EP0353973A3 (en) | 1990-10-17 |
Family
ID=10641404
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890307758 Withdrawn EP0353973A3 (en) | 1988-07-30 | 1989-07-31 | Phosphate-free detergents |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0353973A3 (en) |
GB (1) | GB8818215D0 (en) |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1026366A (en) * | 1963-03-18 | 1966-04-20 | Procter & Gamble | Substituted methylenediphosphonic acid compounds and detergent compositions containing them |
GB1056177A (en) * | 1962-09-04 | 1967-01-25 | Monsanto Co | Method for the sequestration of metal ions, and washing compositions |
GB1057089A (en) * | 1965-04-01 | 1967-02-01 | Henkel & Cie Gmbh | Alkaline cleaning agents |
US3551339A (en) * | 1966-12-16 | 1970-12-29 | Procter & Gamble | Built detergent compositions |
DE2015022A1 (en) * | 1970-03-28 | 1971-10-28 | Joh. A. Benckiser Gmbh, Chemische Fabrik, 6700 Ludwigshafen | Agents for stabilizing the hardness of water, especially in cleaning solutions |
GB1287887A (en) * | 1968-10-24 | 1972-09-06 | ||
US3925228A (en) * | 1973-01-11 | 1975-12-09 | Colgate Palmolive Co | Carbonate built detergents |
FR2376824A1 (en) * | 1977-01-10 | 1978-08-04 | Monsanto Europe Sa | ANTI-SCALE PRODUCTS BASED ON AMINOPOLYMETHYLENE-PHOSPHONIC ACIDS |
EP0001853A1 (en) * | 1977-11-07 | 1979-05-16 | THE PROCTER & GAMBLE COMPANY | Detergent compositions having improved bleaching effect |
EP0040038A2 (en) * | 1980-05-10 | 1981-11-18 | THE PROCTER & GAMBLE COMPANY | Granular detergent compositions |
EP0192630A2 (en) * | 1985-02-21 | 1986-08-27 | Monsanto Europe S.A./N.V. | Aminomethylenephosphonate compositions |
EP0201016A2 (en) * | 1985-05-04 | 1986-11-12 | Henkel Kommanditgesellschaft auf Aktien | Builder-free liquid detergents with softening properties |
-
1988
- 1988-07-30 GB GB888818215A patent/GB8818215D0/en active Pending
-
1989
- 1989-07-31 EP EP19890307758 patent/EP0353973A3/en not_active Withdrawn
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1056177A (en) * | 1962-09-04 | 1967-01-25 | Monsanto Co | Method for the sequestration of metal ions, and washing compositions |
GB1026366A (en) * | 1963-03-18 | 1966-04-20 | Procter & Gamble | Substituted methylenediphosphonic acid compounds and detergent compositions containing them |
GB1057089A (en) * | 1965-04-01 | 1967-02-01 | Henkel & Cie Gmbh | Alkaline cleaning agents |
US3551339A (en) * | 1966-12-16 | 1970-12-29 | Procter & Gamble | Built detergent compositions |
GB1287887A (en) * | 1968-10-24 | 1972-09-06 | ||
DE2015022A1 (en) * | 1970-03-28 | 1971-10-28 | Joh. A. Benckiser Gmbh, Chemische Fabrik, 6700 Ludwigshafen | Agents for stabilizing the hardness of water, especially in cleaning solutions |
US3925228A (en) * | 1973-01-11 | 1975-12-09 | Colgate Palmolive Co | Carbonate built detergents |
FR2376824A1 (en) * | 1977-01-10 | 1978-08-04 | Monsanto Europe Sa | ANTI-SCALE PRODUCTS BASED ON AMINOPOLYMETHYLENE-PHOSPHONIC ACIDS |
EP0001853A1 (en) * | 1977-11-07 | 1979-05-16 | THE PROCTER & GAMBLE COMPANY | Detergent compositions having improved bleaching effect |
EP0040038A2 (en) * | 1980-05-10 | 1981-11-18 | THE PROCTER & GAMBLE COMPANY | Granular detergent compositions |
EP0192630A2 (en) * | 1985-02-21 | 1986-08-27 | Monsanto Europe S.A./N.V. | Aminomethylenephosphonate compositions |
EP0201016A2 (en) * | 1985-05-04 | 1986-11-12 | Henkel Kommanditgesellschaft auf Aktien | Builder-free liquid detergents with softening properties |
Also Published As
Publication number | Publication date |
---|---|
GB8818215D0 (en) | 1988-09-01 |
EP0353973A3 (en) | 1990-10-17 |
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RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ICN BIOMEDICALS LIMITED |
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17Q | First examination report despatched |
Effective date: 19940520 |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 19960201 |