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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/04—Water-soluble compounds
  • C11D3/06—Phosphates, including polyphosphates
• • 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
  • C11D1/88—Ampholytes; Electroneutral compounds
  • C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
• • 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/0039—Coated compositions or coated components in the compositions, (micro)capsules
• • 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
  • C11D3/2082—Polycarboxylic 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/37—Polymers
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
  • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38609—Protease or amylase in solid compositions only
• • 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
  • C11D3/38—Products with no well-defined composition, e.g. natural products
  • C11D3/386—Preparations containing enzymes, e.g. protease or amylase
  • C11D3/38627—Preparations containing enzymes, e.g. protease or amylase containing lipase
• • 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
  • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
  • C11D3/3937—Stabilising agents
  • C11D3/394—Organic compounds
• • 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

Definitions

• the present invention relates to a powder detergent for dishwashing machines, and to a method for its manufac ⁇ ture.
• dishwashing powders available on the market at present are caustic (strongly alkaline) and often contain environmentally harmful components, such as, for instance, high concentrations of sequestering agents, such as phosphates, nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA) and phosphonates and not readily degraded surfactants, and bleaching agents in the form of chlorine compounds.
• sequestering agents such as phosphates, nitrilotriacetic acid (NTA), ethylenediaminetetraacetic acid (EDTA) and phosphonates and not readily degraded surfactants, and bleaching agents in the form of chlorine compounds.
• the bleaching agent present consists of a less environmentally harmful compound, such as percarbonate or persulphate, instead of the chlorine compounds used with conventional dish ⁇ washing agents, such as chloroisocyanurate or perborate.
• SUBSTITUTESHEET B at least one amphoteric surfactant which functions effectively in hard water, will not cause calcium car ⁇ bonate to precipitate during the washing process, has a low foaming profile and is selected from the group tallow ampho-polycarboxy glycinate, N-(2-carboxy ethyl) -N-octyl- ⁇ -alanine, mixed C8-amphocarboxylates and caprylo-amphocarboxy propionate;
• a sequestering agent selected from phosphates, polyacrylates and carboxylates, said detergent having been buffered to provide a pH-value of 8.0-11.0, prefer- ably 8.5-10.5, for a 0.3% ready-for-use solution of the detergent in water.
• the invention also relates to a method for producing the inventive powdered detergent, said method being charac- terized by
• the component A i.e. component carrier, alkali donor, corrosion inhibitor, anticaking agent and pH-buffering substances, may be included in the inventive dishwashing detergent in the form of substances selected from sodium carbonate (soda), sodium hydrogen carbonate, sodium sesquicarbonate, sodium sulphate, silicates and disili- cates.
• sodium carbonate is preferably used in combination with sodium hydrogen carbonate so as to obtain the desired pH-value.
• the sodium carbonate is normally present in a conncentration in the range of 25- 50, preferably 30-40 percent by weight. (All percentag ⁇ es mentioned here and in the following are related to the total weight of the detergent.)
• the concentration of sodium hydrogen carbonate present is normally in the range of 5-30, preferably 5-15 percent by weight.
• Sodium sesquicarbonate can be used as an alternative to the combination of sodium carbonate/sodium hydrogen carbonate, the sodium sesquicarbonate normally being
• SUBSTITUTESHEET included in a concentration of 30-50, preferably 35-45 percent by weight.
• Sodium sulphate is generally present in the inventive detergent in a concentration of 0-20, preferably 0-10 percent by weight.
• the silicate used is preferably sodium silicate, which is normally used in a concentration of 0-20, preferably 0-5 percent by weight.
• the concentration of disilicate used is generally in the range of 0-40, preferably 5-20 percent by weight.
• amphoteric surfactant (component B) is normally present in the inventive detergent in a concentration of 1.0-10, preferably 2-6 percent by weight.
• Examples of tallow a pho-polycarboxy gly ⁇ inate used in the present context are those products retailed under the trade names A pholak ® 7TX and Beraid ® 7557 by Berol Nobel, Sweden.
• An example of N-(2-carboxy- ethyl) -N-octyl- ⁇ -alanine is the product retailed under the trade name Ampholak ® YJH-40 by Berol Nobel, Sto ⁇ k- holm, Sweden.
• An example of mixed C8-ampho-carbox ⁇ lates for inclusion in the inventive detergent is the product retailed under the trade name Miranol ® JEM CONC by Miranol Chemical Company, Inc., South Brunswick (Day ⁇ ton), NJ, U.S.A.
• An example of caprylo-amphocarboxy propionate is the product retailed under the trade name Miranol ® J2M-SF CONC by Miranol Chemical Company, Inc., South Brunswick (Dayton), NJ, U.S.A.
• the nonionic surfactants used as component C) in the inventive dishwashing detergent are liquid at
• the nonionic surfactant is normally present in the inventive detergent in a concentration of 1-10, preferably 2-6 percent by weight.
• the component D) consists in a combination of enzymes baked in granules and selected from the group proteases, a ylases and lipases available within the detergent industry. The presence of these components enhances the cleaning effect of the detergent.
• the best effect is obtained when there is chosen an enzyme combination which includes at least one represen ⁇ tative of each type of enzyme.
• the total enzyme concen ⁇ tration in the inventive detergent is normally in the range of 1-5 percent by weight, wherein the concentra ⁇ tion of individual enzymes may vary in dependence on their respective properties.
• proteases which can be used in this con- nection are those products which are retailed under the trade names Esperase ® and Durazym ® by Novo Nordisk A/S, Denmark.
• ⁇ -amylases and lipases which can be used in the inventive detergent are those products which are retailed under the respective trade names Termamyl and Lipolase by Novo Nordisk A/S, Denmark.
• the component E) included in the inventive detergent may be a bleaching agent consisting of percarbonate, persul ⁇ phate or a mixture of these two substances.
• the pre- ferred bleaching.agent is percarbonate, particularly sodium percarbonate.
• the concentration of percarbonate in the inventive detergent is normally 3-20, preferably 5-15 percent by weight. When persulphate is used, it will not normally have a higher concentration than 10 percent by weight,
• SUBSTITUTESHEET preferably not higher than 5 percent by weight.
• the component F) included in the inventive detergent is a sequestering agent chosen from the group phosphates, polyacrylates and carboxylates.
• the sequestering agent used in this connection is pre ⁇ ferably one or more substances from the group citrates, tartrates and gluconates, particularly sodium citrate and/or a mixture of sodium tartrate and potassium tar- trate.
• Citrate is normally present in a concentration within the range of 10-30, preferably 15-20 percent by weight, while the tartrate concentration is within the range of 2-15, preferably 2-5 percent by weight.
• citrate and tartrate mixtures are used, the lower part of respective preferred concentration ranges are applied in order to avoid an excessively high combined concen ⁇ tration.
• the gluconate When gluconate, and then particularly sodium gluconate, is used alone, the gluconate is normally present in the inventive detergent in a concentration within the range of 5-25, preferably 5-10 percent by weight, although this percentage may advantageously be beneath 5 percent by weight when the gluconate is pres ⁇ ent in combination with another sequestering agent, such as a citrate and/or a tartrate.
• another sequestering agent such as a citrate and/or a tartrate.
• the component F) included in the inventive detergent may consist of phosphates, preferably sodium tripolyphos- phate, and which are then present in the inventive detergent in a concentration which is normally within the range of 10-35, preferably 15-20 percent by weight.
• carboxylates as component F) in the inventive detergent are polyacrylates which are then present in a concentration which is normally within the inventive detergent
• SUBSTITUTESHEET range of 3-20, preferably 3-7 percent by weight.
• the detergent is also given a small quan- tity of an antioxidation agent, so as to prevent degra ⁇ dation of the enzymes (component D) and the surfactants.
• the antioxidation agent is normally present in the detergent in a concentration within the range of 0.005- 0.03, preferably 0.005-0.01 percent by weight.
• the antioxidation agent used in this case may be a (C -C )- alkyl ester of 3,4,5-trihydroxybenzoic acid, preferably ethyl 3,4,5-trihydroxybenzoate, and/or ethyl 3,4,5- trihydroxyanisole.
• a sequestering agent other than the sequestering agents included in component F) and/or a substance of component F) or a corresponding acid can be added in a small quantity during the manufacture of the detergent, such as a sequestering agent based on the tetrasodium salt of ethylenediaminetetraa ⁇ etic acid (Na EDTA) having a
• this further seques ⁇ tering agent normally being used in a concentration within the range of 0.05-0.5, preferably 0.08-0.15 percent by weight.
• the agent When using an antioxidation agent, the agent is mixed in stage II) dissolved in the component C) . Also mixed in stage II) is the aforesaid sequestering agent which is not included in component F), or a minor part of the carboxylates used as component F) , said sequestering agent being dissolved in the component B).
• the inventive method is particularly advantageous when percarbonate is used as component E) in the inventive detergent.
• Percarbonates such as sodium percarbonate.
• SUBSTITUTESHEET have a relatively unstable structure, which causes problems with regard to the durability of the product when used as a dishwashing detergent.
• the degradation of the percarbonate is namely accelerated in the presence of other substances, such as heavy metals, readily oxidizable substances and moisture.
• the inventive method is based on the known so-called agglomeration technique for the manufacture of launder- ing and dishwashing detergent powders.
• agglomeration technique solid powder particles are mixed with liquid substances in droplet form.
• the agglomeration technique enables powder detergents for dishwashing machines to be manufactured at high litre weights and high concentrations of active substances.
• the detergent components are mixed in stages, so that those sub- stances which have an destabilizing effect on percar- bonates are first encapsulated so as to obtain a surface coating which counteracts degradation, and it is only thereafter that the requisite amount of percarbonate is added to the system.
• SUBSTITUTESHEET According to one modification of the inventive method in which disilicate and/or sodium carbonate are included in component A) and sodium percarbonate is used as or included in component B), the major part of the disili- cate and/or the sodium carbonate is mixed in stage I) and the remainder is mixed together with the component E) in stage III).
• a number of powder detergents for dishwashing machines were produced in an agglomerator of the type Forberg Mixer from Halvor Forberg A/S, Larvik, Norway.
• stage I the solid components A), D) and F) intended for this stage were mixed in the aforesaid agglomerator, said components being finely divided in air.
• Liquid surfactants the components B) and C) with substances optionally dis ⁇ solved therein were then sprayed onto the fluidized or airborne mixture of solid particles in the form of fine droplets in a second stage (stage II in the Table), the amphoteric surfactant being preferably sprayed first and then the nonionic surfactant.
• the bleaching agent (component E) ) and, when applicable, a part of the substances included in component A) of the inventive detergent were then mixed with the previously mixed components in a third stage (stage III in the Table).
• Example 7 represents the best mode contemplated at present for carrying out the invention.
• Lipolase lipase from Novo Nordisk A/S, Denmark
• N-(2-carb ⁇ xyethy1)-N- octyl- ⁇ -alanine (Ampholak YJH 40 Berol Nobel,Sweden) 3.5 4.5 3.0 1 - 2.15
• the components 24 and 25 were dissolved in the component 19 and each contributed 0.1 percent by weight to the given concentration.
• the component 26 was dissolved in the component 20 in an amount corresponding to 0.01 percent by weight calculated on the weight of the detergent.
• the component 26 was dissolved in the component 20 in an amount corresponding to 0.01 percent by weight calculated on the weight of the detergent.
• the component 23 was dissolved in the component 17 and contributed 0.15 percent by weight to the given concentration.
• the component 22 was dissolved in the component 18 in an amount corresponding to 0.001 percent by weight calculated on the weight of the detergent.
• the component 27 was dissolved in the component 21 in an amount corresponding to 0.01 percent by weight calculated on the weight of the detergent.
• the component 25 was dissolved in the component 17 and contributed 0.15 percent by weight to the given concentration.
• the component 26 was dissolved in the component 20 in an amount corresponding to 0.01 percent by weight of the weight of the detergent.

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• 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)
• Inorganic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20383490

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Country Status (3)

Cited By (17)

Citations (1)

• 1991
  • 1991-08-16 SE SE9102381A patent/SE9102381L/sv not_active IP Right Cessation
  • 1991-12-20 WO PCT/SE1991/000894 patent/WO1993004152A1/en active Application Filing
  • 1991-12-20 AU AU91732/91A patent/AU9173291A/en not_active Abandoned

Patent Citations (1)

Non-Patent Citations (1)

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