EP3825391A1 - Product for the treatment of an electric home appliance configured for washing - Google Patents

Product for the treatment of an electric home appliance configured for washing Download PDF

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Publication number
EP3825391A1
EP3825391A1 EP20208761.5A EP20208761A EP3825391A1 EP 3825391 A1 EP3825391 A1 EP 3825391A1 EP 20208761 A EP20208761 A EP 20208761A EP 3825391 A1 EP3825391 A1 EP 3825391A1
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EP
European Patent Office
Prior art keywords
inner composition
weight
product
respect
product 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.)
Pending
Application number
EP20208761.5A
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German (de)
English (en)
French (fr)
Inventor
Samanta Fabbri
Francesca EGENOLF
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Deco Industrie S Coop PA
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Deco Industrie S Coop PA
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Publication of EP3825391A1 publication Critical patent/EP3825391A1/en
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    • 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
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols
    • 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
    • C11D3/2003—Alcohols; Phenols
    • C11D3/2065—Polyhydric alcohols
    • 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
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/30—Amines; Substituted amines ; Quaternized amines
    • 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
    • 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
    • C11D3/43—Solvents
    • 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
    • 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
    • C11D7/08—Acids
    • 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
    • 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
    • C11D7/5013—Organic solvents 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
    • 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
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned

Definitions

  • the present invention relates to a product for the treatment of a washing appliance and to uses of said product.
  • the method of use of this type of product envisages running a complete empty cycle by setting a high temperature programme.
  • the empty cycle needs to be run because, given the highly acid pH of the product, the concomitant use with the classic detergents for dishwashers would cause the inactivation of the enzymes contained in the detergents, significantly worsening the performance of washing the crockery.
  • the need to opt for an intensive programme is determined by the fact that the dishwasher care products are generally packaged in bottles (typically 250ml) of water-resistant (non-biodegradable) plastic provided with a special cap consisting of a septum of meltable wax at temperatures above 45-50°C.
  • the product therefore starts its action in the central washing step when the temperature of the dishwasher is sufficient to melt the wax.
  • the dishwasher cares currently on the market come in a monophasic or biphasic version.
  • the washing machine care products are liquid products with high dilution (H 2 O>70%) with strongly acid pH, equal to about 2, and a fair degreasing power thanks to the presence of surfactants. They have the purpose of removing dirt residues and limescale that periodically accumulate in the appliance and are used in empty cycles, possibly at high temperatures to maximise the effect of the product. Considering the low pH, they cannot be used in the normal washing cycle together with the detergent because, similarly to the dishwasher cares, they would hinder the stain removal action of the enzymes normally contained in washing machine detergents.
  • the sales formats currently available are 250ml bottles (disposable) of water-resistant (non-biodegradable) plastic to be poured into the detergent compartment.
  • the dishwasher care and washing machine care products have several drawbacks, among which we mention the following: to be used and, therefore, to exert their function, they require a lot of time, a lot of water and a lot of electricity (typically an entire washing cycle is necessary). It should also be noted that the packaging of these products (being in non-bio-degradable plastic) has a negative environmental impact.
  • the washing machine care and anti-scale products for washing machines are also relatively difficult to dose (making the loading operations of appliances more complex and inaccurate - the risk of waste also increases).
  • the anti-scale products for washing machines are liquid products with high dilution (H 2 O>80%) preferably with variable pH 4 to 7 which are added directly into the compartment of the washing machine together with the detergent at each wash.
  • the anti-scale products therefore cooperate with the detergent by sequestering the limescale present, thus improving the cleaning performance of the detergent. They therefore start working in the actual washing step.
  • the formulations currently on the market consist of a pool of sequestrants and dispersants.
  • the sales format of these products is generally in bottles of variable volume (500-750ml) with dosing cap. Normally, 50-75ml of product is used per wash.
  • the anti-scale products for washing machines have several drawbacks, among which we mention the following: they are contained in bottles of non-biodegradable plastic material (and therefore have a negative environmental impact), they are relatively difficult to dose (making the loading operations of appliances more complex and inaccurate - they also increase the risk of waste) and do not allow to satisfactorily improve the activity of the detergents relatively to all types of dirt.
  • liquid detergents sold in water-soluble single-dose capsules are known. However, they are unable to perform the functions of the aforementioned anti-scale, dishwasher care and washing machine care products and have so far been produced only in a monophasic version.
  • the object of the present invention is to provide a product for the treatment of a washing appliance and to uses of this product, which allow to overcome, at least partially, the drawbacks of the prior art and possibly are, at the same time, easy and economic to realise.
  • the product may have two or more phases that are mutually immiscible.
  • 1 denotes as a whole a product for the treatment of a washing appliance (for example, a dishwasher or a washing machine).
  • a washing appliance for example, a dishwasher or a washing machine.
  • the product 1 is, for example, an appliance care product and/or an anti-scale product.
  • the product 1 is for the treatment of a dishwasher.
  • the product 1 is for the treatment of a washing machine.
  • the product 1 comprises a substantially water-soluble (in particular, biodegradable) casing 2; a collecting chamber 3, which is delimited by said casing 2; and an inner composition 4, which is substantially liquid, is arranged inside the collecting chamber 3 and comprises 10% to 95% (in particular to 90%) by weight with respect to the total weight of the inner composition 4, of an organic solvent and 0% to 20% by weight, with respect to the total weight of the inner composition 4, of water.
  • the inner composition 4 comprises up to a maximum of 15% (in particular, up to a maximum of 10%; more in particular, up to a maximum of 5%) by weight, with respect to the total weight of the inner composition 4, of water. It should be noted that it has been experimentally observed that the lower the concentration of water, the lower the risk of the casing 2 being damaged.
  • the inner composition 4 comprises 2% to 40% by weight, with respect to the total weight of the inner composition 4, of a weak acid.
  • weak acid refers to the acid as such (not dissociated) and/or a salt thereof (for example sodium citrate) and/or the anion (completely dissociated from the counterion) . This applies to any embodiment and/or example of such an weak acid.
  • the weak acid is in the substantially liquid phase (for example, the weak acid is dissolved).
  • the weak acid and the organic solvent act surprisingly synergistically so to allow to obtain an inner composition 4 which is at the same time with a low concentration of water (therefore scarcely aggressive for the casing 2) and is able to exert (once the casing 2 has been dissolved) a sequestering action against limescale.
  • the weak acid has a pK a in water (in particular, measured at ambient temperature and pressure - 25°C and 1 bar) greater than 1 (in particular, greater than or equal to 2) up to 9 (in particular, up to 6; more in particular, up to 5; still more particularly up to 4).
  • the pK a and the pK b are determined according to one of the known methods (possibly using the most suitable method among those described, for example, in Reijenga et al, Developments of Methods for the Determination of pKa Values, Analytical Chemistry Insights 2013:8 53-17 ).
  • the pK a and the pK b are determined according to the potentiometric method (see X.
  • the weak acid is selected from the group consisting of: carboxylic acids (in particular, C 1 -C 8 ; in particular, with 1 to 4 - more precisely 1 to 3 carboxylic groups), phosphoric acid (and a combination thereof).
  • the weak acid can be a mixture of different carboxylic acids (with or without phosphoric acid) or composed of a single carboxylic acid.
  • C x -C y refers to a group and/or a compound which is intended as having x to y carbon atoms.
  • the weak acid is selected from the group consisting of: citric acid, lactic acid, formic acid, phosphoric acid (and a combination thereof). More precisely but not necessarily, weak acid is selected from the group consisting of: citric acid, lactic acid, formic acid (and a combination thereof). In some specific non-limiting cases, the weak acid is the citric acid.
  • the inner composition 4 comprises at least 5% (in particular, at least 7%; more in particular, at least 20%) by weight, with respect to the total weight of the inner composition 4, of said weak acid.
  • the inner composition 4 comprises up (less than or equal) to 35% (in particular, to 30%; more in particular, to 15%) by weight, with respect to the total weight of the inner composition 4, of the aforesaid weak acid.
  • the inner composition 4 comprises from 5% (in particular, from 7%; more in particular, from 20%) to 40% (in particular, to 35%) by weight, with respect to the total weight of the inner composition 4, of said weak acid.
  • the inner composition 4 comprises from 5% (in particular, from 7%) to 40% (in particular, to 35%; more in particular, to 25%) by weight, with respect to the total weight of the inner composition 4, of said weak acid.
  • the organic solvent is selected from the group consisting of alcohols, diols, triols, polyols (and a combination thereof).
  • the alcohols, diols, triols and polyols are, each one independently of the other ones, C 2 -C 8 (in particular, C 3 -C 6 ).
  • the organic solvent can be a mixture of different alcohols (and/or diols and/or triols and/or polyols) or composed of a single alcohol (or diol etc.).
  • the alcohols, diols, triols and polyols have, each one independently of the other ones, a number of hydroxyls which is the same as the number of carbons.
  • each carbon of the alcohols, diols, triols and polyols is bound to a respective single (only) hydroxyl group.
  • the aforesaid alcohols, diols, triols and polyols are linear (i.e., they have a linear chain of carbons bound together).
  • the organic solvent is selected from the group consisting of: glycerin, sorbitol (and a combination thereof).
  • the organic solvent comprises (in particular, is) glycerin.
  • the organic solvent comprises (in particular, is) sorbitol.
  • the inner composition 4 comprises at least 25% (in particular, at least 40%, more in particular at least 50%) by weight, with respect to the total weight of the inner composition 4, of the organic solvent.
  • the inner composition 4 comprises up (less than or equal) to 80% (in particular, up to 65%) by weight, with respect to the total weight of the inner composition 4, of the organic solvent.
  • the inner composition 4 comprises 1% to 40% by weight, with respect to the total weight of the inner composition 4, of an alkalinizing agent having a PK b , in water at 25°C and 1 bar, ranging from 2 (in particular, from 3) to 9 (in particular, to 8; more in particular, to 7; still more particularly, to 5).
  • the alkalinizing agent surprisingly allows to improve the solubilization of the aforesaid weak acid and, at the same time, regulates the pH reducing the risk, for example, of inactivating the enzymes of the detergents.
  • the inner composition 4 comprises at least 2% (in particular, at least 10%) by weight, with respect to the total weight of the inner composition 4, of the alkalinizing agent.
  • the inner composition 4 comprises up (less than or equal) to 35% (in particular, up to 25%; more in particular, up to 20%; still more particularly, up to 15%; still more particularly, up to 6%) by weight, with respect to the total weight of said inner composition 4, of the alkalinizing agent.
  • the inner composition 4 comprises 1% to 10% (in particular, to 6%; more in particular, to 4%) by weight, with respect to the total weight of said inner composition 4, of the alkalinizing agent.
  • the inner composition 4 comprises from 1% (in particular, from 5%; more in particular, from 10%) to 40% (in particular, to 35%) by weight, with respect to the total weight of the inner composition 4, of the alkalinizing agent.
  • the alkalinizing agent is selected from the group consisting of: C 1 -C 8 hydroxy-amines (in particular, with only one amino functionality; in particular, C 2 -C 6 ), ammonia, potassium hydroxide (and a combination thereof).
  • the alkalinizing agent can be a mixture of different hydroxy-ammines or composed of a single hydroxy-ammine.
  • the alkalinizing agent is selected from the group consisting of: monoethanolamine, diethanolamine, triethanolamine (potassium hydroxide) (and a combination thereof).
  • the inner composition 4 comprises 1% to 10% (in particular, to 8%) by weight, with respect to the total weight of the inner composition 4, of a polymer component (in particular, comprising - consisting of - a plurality of polymers selected from the group consisting of: acrylic homopolymers, acrylic-maleic copolymers and a combination thereof).
  • a polymer component in particular, comprising - consisting of - a plurality of polymers selected from the group consisting of: acrylic homopolymers, acrylic-maleic copolymers and a combination thereof.
  • the polymer component can be a mixture of different acrylic homopolymers (and/or acrylic-maleic copolymers) or composed of a single acrylic homopolymer.
  • the polymer component is able to sequester calcium and magnesium and, by acting synergistically with the weak acid, allows to reduce scale.
  • the polymer component comprises polymers with a mean molecular weight ranging from 1000 g/mol (in particular, from 3000 g/mol) to 20000 g/mol (in particular, to 10000 g/mol; more in particular, to 6000 g/mol).
  • the mean molecular weight of the polymers is measured through static light scattering methods (such as for example described in ASTM D4001 - 13).
  • the inner composition 4 comprises 1% to 50% by weight, with respect to the total weight of the inner composition 4, of a surfactant (in particular, selected from the group consisting of: anionic surfactants, cationic surfactants, amphoteric surfactants, non-ionic surfactants, and a combination thereof).
  • a surfactant in particular, selected from the group consisting of: anionic surfactants, cationic surfactants, amphoteric surfactants, non-ionic surfactants, and a combination thereof.
  • the surfactant can be a mixture of different anionic surfactants (and/or cationic surfactants and/or amphoteric surfactants and/or non-ionic surfactants) or composed of a single anionic surfactant (or a single cationic surfactant or a single amphoteric surfactant or a single non-ionic surfactant).
  • the surfactant is selected from the group consisting of: alkyl ethoxysulfates (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ) , alkyl sulfates (in particular C 8 -C 18 ; more in particular, C 12 -C 16 ), salts of the dodecylbenzenesulfonic acid, alkylbenzene sulfonates (in particular C 9 -C 27 ; more in particular, C 18 -C 24 ), alkyl sulfonates (in particular C 9 -C 21 ; more in particular, C 12 -C 18 ), soaps (in particular C 9 -C 21 ; more in particular, C 12 -C 18 ), amine ethoxylates (in particular C 12 -C 18 ), quaternary ammonium salts (in particular C 9 -C 21 ; more in particular, C 12 -C 18 ), betaines (in
  • sulfates and/or “sulfonates” of organic compounds refer to either the relative acids (sulfuric acids and sulphonic acids, respectively) or the relative salts (for example of sodium) and the anions (completely dissociated from the counterions).
  • the surfactant mainly comprises (is) a non-ionic surfactant.
  • the non-ionic surfactant is gathered (is - mainly - present) in the upper phase (portion) (shown in darker grey in the attached figures); the organic solvent (the possible water), the weak acid and possibly the alkalinizing agent and/or the polymer component are gathered (are - mainly - present) in the lower phase (portion) (shown in lighter grey in the attached figures). More precisely but not necessarily, the upper phase and the lower phase are (substantially) immiscible (with each other).
  • the inner composition 4 comprises one or more dyes (in particular, organic pigments) which is/are arranged so that the two phases are visually even more distinguishable.
  • a component of the inner composition 4 is "mainly" arranged in a phase (portion), it is meant that the quantity of this component in that phase is greater than (in particular, it is at least double) the quantity of the same component in all the rest of the inner composition 4.
  • an air portion 5 (an air bubble), which tends to position itself above the inner composition 4 (more precisely, where present, of the aforesaid upper portion), is also arranged inside the chamber 3.
  • the surfactant is selected from the group consisting of: ethoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ), etho-propoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ), alkyl polyglucosides (in particular C 9 -C 38 ; more in particular, C 12 -C 28 ), ethanolamides (in particular C 9 -C 27 ; more in particular, C 18 -C 24 ) of fatty acids (and a combination thereof).
  • ethoxylated alcohols in particular C 8 -C 38 ; more in particular, C 12 -C 28
  • etho-propoxylated alcohols in particular C 8 -C 38 ; more in particular, C 12 -C 28
  • alkyl polyglucosides in particular C 9 -C 38 ; more in particular, C 12 -C 28
  • ethanolamides in particular C 9 -C 27
  • the surfactant is selected from the group consisting of: ethoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ), etho-propoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ) (and a combination thereof) .
  • the surfactant is selected from the group consisting of: ethoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ), etho-propoxylated alcohols (in particular C 8 -C 38 ; more in particular, C 12 -C 28 ), alkylbenzene sulfonates (in particular C 9 -C 27 ; more in particular, C 18 -C 24 ) (and a combination thereof) .
  • ethoxylated alcohols in particular C 8 -C 38 ; more in particular, C 12 -C 28
  • etho-propoxylated alcohols in particular C 8 -C 38 ; more in particular, C 12 -C 28
  • alkylbenzene sulfonates in particular C 9 -C 27 ; more in particular, C 18 -C 24
  • alkylbenzene sulfonates have the following structural formula (I): wherein R 1 is a C 9 -C 18 aliphatic (in particular, an alkyl); R 2 is a C 1 -C 4 (in particular, C 2 -C 3 , more in particular C 2 ) an aliphatic (in particular, an alkyl) . More precisely but not necessarily, R 1 is a linear aliphatic (in particular, an alkyl); R 2 is a linear aliphatic (in particular, an alkyl).
  • the alkylbenzene sulfonate have the following structural formula (VI): wherein R 1 is a C 9 -C 18 aliphatic (in particular, an alkyl); M is a metal selected from sodium and potassium. More precisely but not necessarily, R 1 is a linear aliphatic (in particular, an alkyl).
  • aliphatic it is meant a nonaromatic and unsubstituted (unless otherwise specified), saturated or unsaturated, linear, branched and/or cyclic hydrocarbon.
  • Non-limiting examples of aliphatic groups are: t-butyl, ethenyl, 1- or 2-propenyl, cyclohexyl.
  • alkyl or “alkyl-” it is meant a saturated aliphatic (i.e., an aliphatic group without double or triple carbon-carbon bonds).
  • alkyls are: methyl, n-propyl, t-butyl, cyclohexyl.
  • the ethoxylated alcohols have the following structural formula (II): R 3 -O-(CH 2 CH 2 O) n -H (II) wherein R 3 is a C 9 -C 18 aliphatic (in particular, an alkyl); n is an integer 1 to 9.
  • the etho-propoxylated alcohols have the following structural formula (III): R 4 -O-(R 5 O) m -H (III)
  • R 4 is a C 9 -C 18 aliphatic (in particular, an alkyl); m is an integer 1 to 9; and each R 5 is selected, each one independently of the other ones between -(CH 2 ) 3 - and - (CH 2 ) 2 -.
  • alkyl ethoxysulfates have the following structural formula (IV): R 6 -(OC 2 H 4 )a-SO 4 - (IV) wherein R 6 is a C 9 -C 18 aliphatic (in particular, an alkyl); a is an integer 1 to 9.
  • alkyl sulfates have the following structural formula (V): R 7 -SO 4 - (V),
  • R 7 is a C 9 -C 18 aliphatic (in particular, an alkyl).
  • the inner composition 4 comprises from 1% (in particular, from 10%) to 30% (in particular, to 25%) by weight, with respect to the total weight of the inner composition 4, of the aforesaid surfactant.
  • the product 1 has a pH ranging from 2 to 7.
  • the inner composition 4 has a pH up to 4 (in particular, up to 3; more in particular, up to 2.5) .
  • the inner composition 4 has a pH ranging from 3 (in particular, from 6) up to 7 (in particular, up to 6.7).
  • the casing has a thickness ranging from about 20 ⁇ m to about 300 ⁇ m (in particular, to about 150 ⁇ m).
  • the casing 2 (is made of a material so that it) dissolves in water at 25°C within 10 minutes from immersion.
  • the casing 2 is (mainly) of polyvinyl alcohol (PVOH).
  • the casing 2 is floppy.
  • the casing 2 has a different shape when it is full (i.e., when the collecting chamber 3 is full) and when it is empty (i.e., when the collecting chamber 3 is empty).
  • the casing 2 when full, assumes an expanded shape that is different (and volumetrically greater) than the shape assumed by the same empty casing 2.
  • the product 1 comprises from about 5 ml (in particular, from about 15 ml) to about 30 ml (in particular, to about 25 ml) of the inner composition 4.
  • the product 1 has several advantages relative to the state of the art. Among these we mention the following: the product 1 has a reduced environmental impact (in particular, the casing 2, being water-soluble and biodegradable, leaves no residues); it is easy to dose; it allows to improve the activity of the detergents relative to some types of dirt; in order to be used and, therefore, to make explicit its function it requires reduced energy, water, and time.
  • the use of the product 1 defined above is provided for the treatment of a washing appliance (for example, a dishwasher or a washing machine).
  • a washing appliance for example, a dishwasher or a washing machine.
  • the appliance is configured for washing objects (items) selected from the group consisting of: kitchen utensils (more in particular, crockery and/or cutlery) and articles mainly made of fabric (more in particular, clothing and/or underwear).
  • items selected from the group consisting of: kitchen utensils (more in particular, crockery and/or cutlery) and articles mainly made of fabric (more in particular, clothing and/or underwear).
  • At least one of the aforesaid objects is present inside the appliance.
  • the use comprises a treatment step during which the product 1 comes into contact with water (in particular, having a temperature below 40°C) inside the appliance and the casing (at least partially) dissolves.
  • At least one aforesaid object is present inside the appliance.
  • the appliance is a dishwasher.
  • the use provides that the product and a (further) detergent is used during the same washing cycle (in particular, during which at least one aforesaid object - more in particular, a plurality of said objects - is present inside the appliance).
  • the washing cycle comprises the aforementioned treatment step and (optionally) a washing step, during which the detergent is used to wash the object (s).
  • the washing step takes place at a higher temperature than the treatment step.
  • a discharge step during which the water used during the treatment step is removed (from the aforementioned appliance).
  • the use of the product 1 is as a dishwasher care. In addition, or alternatively, the use of the product 1 is as a washing machine care. In addition, or alternatively, the use of the product 1 is as an anti-scale product for washing machine.
  • the product 1 can be placed, for example, in the cutlery basket and, considering the fast dissolution of the film, it starts working already in the pre-rinsing step (which in practice, corresponds to the aforementioned treatment step) allowing the dishwasher to be cleaned in preparation for washing.
  • the product 1 therefore has the purpose of preparing the machine for washing, without having the need for unnecessary empty washing.
  • This example describes the realisation of some products in accordance with the present invention.
  • composition with formulation A was mainly prepared as a dishwasher care product. This product is presented as biphasic.
  • Formulation B Single-dose components % by weight Acrylic polymer 4 Citric acid 22 Sorbitol 12 Glycerol 34.9999 Monoethanolamine 2 Etho-propoxylated alcohol 15 Colour 0.0001 Fragrance 1 Water 9 total 100
  • the product containing the composition with formulation B was mainly prepared as a dishwasher care product. This product is presented as biphasic.
  • Formulation C Single-dose components % by weight Acrylic polymer 2 Citric acid 6 Sorbitol 10 Glycerol 50.5 Monoethanolamine 20 Alkyl derivatives of benzenesulfonic acid with ethanolamine* 5 Water 6.5 total 100
  • composition with formulation C was mainly prepared as an anti-scale product for washing machine. This product is presented as monophasic.
  • Formulation D Single-dose components % by weight Citric acid 5 Sorbitol 10 Glycerol 45.4999 Triethanolamine 16 Ethoxylated alcohol 20 Colour 0.0001 Fragrance 0.5 Water 3 total 100
  • composition with formulation D was mainly prepared as an anti-scale product for washing machine. This product is presented as biphasic.
  • Formulation E Single-dose components % by weight Citric acid 10 Acrylic polymer 5 Sorbitol 10 Glycerol 28.9999 Triethanolamine 16 Etho-propoxylated alcohol 20 Colour 0.0001 Water 10 total 100
  • the product containing the composition with the formulation E was mainly prepared as an anti-scale product for washing machines. This product is presented as biphasic.
  • the etho-propoxylated alcohols were one or more compounds having the following structure R 4 -O-(R 5 O) m -H, wherein R 4 is a C 9 -C 18 aliphatic (in particular, an alkyl) ; m is an integer 1 to 9; and each R 5 is selected, each one independently of the other ones, between -(CH 2 ) 3 - and - (CH 2 ) 2 -.
  • alkyl derivatives of benzenesulfonic acid with ethanolamine had the following structure: wherein R 1 is a C 9 -C 18 alkyl.
  • This example describes the comparison between the capability of removing dirt from cotton patches of the detergent Dixan® alone (a detergent sold in Italy by Henkel® and marketed in other countries under the names Persil®, Wipp® and LeChat®) compared to the combination of the detergent Dixan® together with a single product in accordance with the present invention (the product with formulation D of the previous example).
  • the measurements of the treated cotton patches were carried out using a Dr Lange LUCI 100 reflectometer by measuring the light reflected by the stains for the assessment of the dirt removal. Differences of less than 2 optical points are not perceived by the human eye and therefore were not considered as significant.
  • This example describes the comparison of the dirt removal capability of the combination of the detergent Dixan® together with a single product in accordance with the present invention (the product with formulation D of example 1) compared to the use of the detergent Dixan® together with another anti-scale product already present on the market.
  • This example describes a test carried out to assess the effect of a product in accordance with the present invention on limescale removal.
  • test was carried out without using any product.
  • the other test was carried out using a product in accordance with the invention (the product with formulation A of example 1).
  • the tiles were removed, dried, and weighed, assessing the removal of limescale by gravimetric method.

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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)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
EP20208761.5A 2019-11-19 2020-11-19 Product for the treatment of an electric home appliance configured for washing Pending EP3825391A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100002048A1 (it) * 2021-02-01 2022-08-01 Deco Ind S Coop P A Prodotto per lavatrici
IT202100002051A1 (it) * 2021-02-01 2022-08-01 Deco Ind S Coop P A Prodotto per il trattamento di un elettrodomestico configurato per il lavaggio

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US4465612A (en) * 1982-11-04 1984-08-14 Henkel Kommanditgesellschaft Auf Aktien Process for cleaning and maintaining the interior surfaces of a mechanical dishwasher
EP0256148A1 (de) * 1986-08-12 1988-02-24 Joh. A. Benckiser GmbH Flüssiges, granuliertes oder pulverförmiges Reinigungsmittel, insbesondere für Geschirrspülmaschinen
US5981449A (en) * 1995-08-09 1999-11-09 The Procter & Gamble Company Acidic cleaning compositions
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EP1679362A1 (en) * 2005-01-10 2006-07-12 The Procter & Gamble Company Cleaning composition for washing-up or washing machine
EP1690924A1 (en) * 2005-02-11 2006-08-16 The Procter & Gamble Company Method of cleaning a washing machine or a dishwasher
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US4465612A (en) * 1982-11-04 1984-08-14 Henkel Kommanditgesellschaft Auf Aktien Process for cleaning and maintaining the interior surfaces of a mechanical dishwasher
EP0256148A1 (de) * 1986-08-12 1988-02-24 Joh. A. Benckiser GmbH Flüssiges, granuliertes oder pulverförmiges Reinigungsmittel, insbesondere für Geschirrspülmaschinen
US5981449A (en) * 1995-08-09 1999-11-09 The Procter & Gamble Company Acidic cleaning compositions
WO2006023061A1 (en) * 2004-08-03 2006-03-02 Mallinckrodt Baker, Inc. Cleaning compositions for microelectronics substrates
EP1679362A1 (en) * 2005-01-10 2006-07-12 The Procter & Gamble Company Cleaning composition for washing-up or washing machine
EP1690924A1 (en) * 2005-02-11 2006-08-16 The Procter & Gamble Company Method of cleaning a washing machine or a dishwasher
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SERJEANT, E. P: "Potentiometry and Potentiometric Titrations", 1984, WILEY
X. SUBIRATS ET AL.: "Reference Module in Chemistry, Molecular Sciences and Chemical Engineering", 2015, ELSEVIER, article "Methods for pKa Determination (I) : Potentiometry, Spectrophotometry, and Capillary Electrophore"

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT202100002048A1 (it) * 2021-02-01 2022-08-01 Deco Ind S Coop P A Prodotto per lavatrici
IT202100002051A1 (it) * 2021-02-01 2022-08-01 Deco Ind S Coop P A Prodotto per il trattamento di un elettrodomestico configurato per il lavaggio
EP4053257A1 (en) * 2021-02-01 2022-09-07 Deco Industrie S. Coop. P.A. Product for washing machines

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