EP4165153A1 - Reinigungsprodukt und entsprechendes syntheseverfahren - Google Patents

Reinigungsprodukt und entsprechendes syntheseverfahren

Info

Publication number
EP4165153A1
EP4165153A1 EP21730680.2A EP21730680A EP4165153A1 EP 4165153 A1 EP4165153 A1 EP 4165153A1 EP 21730680 A EP21730680 A EP 21730680A EP 4165153 A1 EP4165153 A1 EP 4165153A1
Authority
EP
European Patent Office
Prior art keywords
cleaning product
weight
present
amount
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
EP21730680.2A
Other languages
English (en)
French (fr)
Inventor
Alessandro Amato
Gianluca VIGNOLA
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.)
N4c Capital Ltd
Original Assignee
N4c Capital 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 N4c Capital Ltd filed Critical N4c Capital Ltd
Publication of EP4165153A1 publication Critical patent/EP4165153A1/de
Pending legal-status Critical Current

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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/0094—Process for making liquid detergent compositions, e.g. slurries, pastes or gels
    • 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
    • C11D3/33—Amino carboxylic 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
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/662—Carbohydrates or derivatives
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/74—Carboxylates or sulfonates esters 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
    • C11D3/2068—Ethers

Definitions

  • the present invention relates to a cleaning product, characterized by a nanometric micellar composition.
  • the present invention refers to a cleaning product based on natural substances, which is therefore ecological, easily biodegradable and allows its use in safe conditions for the user. Even more particularly, the present invention relates to a very effective cleaning product in removing any type of dirt from any type of surface.
  • the present invention also relates to the synthesis process of said cleaning product.
  • the chemical process of saponification carried out in order to break down fatty molecules is known from the state of the art, using basic chemical substances, i.e. hydroxides of alkali metals such as NaOH or KOH, which react with the glycerides in aqueous solution, hydrolyzing them.
  • the salt (sodium or potassium) of the aliphatic fatty acid, i.e. the soap, and the glycerol are obtained from the saponification reaction.
  • Soap is a molecule characterized by an amphipathic structure, i.e. by a hydrophobic tail and a negatively ionized hydrophilic head, which allows dirt to be removed by lowering the surface tension between washing water and fat molecule.
  • the soap molecules come into contact with water and dirt, they arrange themselves circularly in a "micelle" shape, with the hydrophobic tails facing inwards and the hydrophilic heads facing outwards. This special arrangement allows the tails to trap the dirt inside them, which is emulsified and dragged away by washing water.
  • Soaps are therefore salts of fatty acids with at least 12 carbon atoms that act as surfactants.
  • a surfactant is an amphipathic molecule, therefore characterized by a nonpolar tail and a polar head, or vice versa, which in solution, once the critical micellar concentration has been reached, arranges itself together with other surfactant molecules in such a way as to form micelles.
  • the surfactants are effective against dirt, as they act by lowering the surface tension between the fat molecules and water, thus increasing the wettability of the fat molecules, facilitating their removal together with washing water.
  • surfactants can be anionic, non-ionic, cationic or amphoteric.
  • Anionic surfactants have a negative electrostatic charge and are mainly used in laundry products, hand dishwashing and household cleaning products. They have a high foaming power and a high cleaning power on all types of dirt. Compounds such as alkylbenzenesulphonates, alkylsuifates, alkylethoxysulphates and alcoholethoxysulphates belong to this class.
  • Non-ionic surfactants have no electrostatic charge, and for this reason, they are less toxic to humans. They are used above all in laundry products, for washing dishes in the machine and in washing aids: they remove most types of dirt with a particularly strong action on greasy dirt. Compounds such as ethoxylated alcohols and alkylamine oxides belong to this class.
  • Cationic surfactants have a positive electrostatic charge and have been used mainly in fabric softeners, but also in other laundry detergents.
  • quaternary ammonium salts belong to this class.
  • amphoteric surfactants are able to take a different electrostatic charge depending on the type of solution in which they are found, and are mainly used in dish cleaning products.
  • Betaines and alkylamino- oxides belong to this class.
  • micellar structures depends on the physico-chemical properties of the system, such as temperature, pH and concentration.
  • the surfactants initially arrange themselves so as to form basically spherical micelles.
  • the latter as the surfactant concentration increases, can evolve into rod-like or disk-like structures.
  • a further increase in concentration can lead to the formation of lyotropic liquid crystalline phases, with the formation of hexagonal or lamellar micelles.
  • the structure of the supramolecular aggregates generated in solution can be predicted by introducing the "critical packing parameter (cpp) ", which depends on the size of the head and tail of the used surfactant.
  • sequestering agents which have the function of sequestering calcium and magnesium cations in order to reduce the hardness of water. These ingredients also have the function of promoting the performance of surfactants, helping to retain dirt in solution.
  • surfactants Among the "historical" components widely used for this purpose are polyphosphates.
  • the object of the present invention is to obviate the aforementioned drawbacks and in particular, to provide a cleaning product that is based on natural substances, and therefore ecological, easily biodegradable, and whose use does not involve risks for the safety and health of the user.
  • a further object of the present invention is to provide a cleaning product of practical use, which guarantees high efficiency in removing any type of dirt from any surface, reducing cleaning times.
  • Another object of the present invention is to provide a synthesis process of said cleaning product.
  • the present invention therefore relates to a cleaning product characterized by a nanometric micellar composition, said cleaning product comprising:
  • a first non-ionic surfactant present in an amount by weight of between 3.2% and 9.2%;
  • - at least a second non-ionic surfactant present in an amount by weight of between 0.2% and 2.2%
  • - at least one chelating agent present in an amount by weight comprised between 2.2% to 4.5%
  • the detergent product according to the present invention also comprises at least one buffer system in order to stabilize the pH in a range between 8 and 12, preferably between 9 and 11.
  • said at least one buffer system comprises trisodium citrate and citric acid, in which the trisodium citrate is present in an amount by weight comprised between 1% and 6.5%, preferably 3%, while the citric acid is present in an amount by weight between 0.45% and 2.2%, preferably 1.2%, these percentage values being referred to the total weight of the composition.
  • trisodium citrate - citric acid examples include fumarate - fumaric acid, malate - malic acid, tartarate - tartaric acid.
  • the trisodium citrate as well as other salts of organic acids that can be used to buffer the pH of the mixture, confers a double advantage in that it also acts as a chelating agent.
  • said first non-ionic surfactant comprises one or more esters of the polyoxyethylene glycolic fatty acid, preferably Glycereth-6 Cocoate, even more preferably said first non-ionic surfactant is present in an amount by weight of 6.2% with respect to the total weight of the composition.
  • said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH 2 CH 2 O) 7 H, in which R is a C12-C18 alkyl group, and/or a heptyl polyglucoside, in which said at least a second non-ionic surfactant is preferably present in an amount by weight of 0.7% with respect to the total weight of the composition.
  • the detergent product according to the invention therefore comprises at least one chelating agent, or sequestering agent, preferably GLDA (tetrasodium salt of N, N-dicarboxymethyl-glutamic acid), even more preferably said at least one chelating agent is present in an amount by weight of 3.4% with respect to the total weight of the composition.
  • GLDA tetrasodium salt of N, N-dicarboxymethyl-glutamic acid
  • a chelating agent is a chemical compound capable of forming complexes with ions or atoms, sequestrating them.
  • GLDA has the advantage of being extremely effective in the chelation of calcium and magnesium, in such a way as to reduce water hardness and avoid limestone deposits, and at the same time, it is a product of natural origin, biodegradable and eco- sustainable.
  • the cleaning product according to the present invention comprises at least one alcohol-based solvent, preferably 3-methoxy-3-methyl-l-butanol, even more preferably said at least one alcohol-based solvent is present in an amount by weight of 17.5% with respect to the total weight of the composition.
  • the cleaning product according to the invention further comprises one or more amphoteric surfactants, preferably dipotassium 2- ethylhexyl dipropionate salt, even more preferably said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, preferably 0.63%, with respect to the total weight of the composition.
  • amphoteric surfactants preferably dipotassium 2- ethylhexyl dipropionate salt, even more preferably said one or more amphoteric surfactants are present in an amount by weight comprised between 0.14% and 1.54%, preferably 0.63%, with respect to the total weight of the composition.
  • the cleaning product according to the present invention has the advantage of being very versatile and can be used in various fields of cleaning, subjecting said product to dilution with water and the addition of specific components according to the field of application.
  • the final products obtained have the advantage of being environmentally friendly, easily biodegradable and extremely safe for the user: they do not produce vapors; they are not corrosive to the skin and can therefore be used without the use of protections such as masks and glasses.
  • said cleaning product according to the invention can be applied for the cleaning of surfaces such as fabrics, grills, leather sofas, clothes, car rims, glass, furniture, dishwashers, etc.
  • Additives that can be used depending on the application for which the finished product is intended are, for example, odor suppressants (e.g. zinc ricinoleate), perfumes, solvents, co-solvents, anionic surfactants (e.g. sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (e.g. alkylbetaine).
  • a further object of the present invention is the production process of said cleaning product according to claim 1, said process comprising the following steps: a) pouring demineralized water in a mixer in an amount by weight comprised between 20% and 50%, preferably between 30% and 40% by weight, based on the total weight of the composition; b) adding at least one chelating agent and at least one alcohol-based solvent and mixing; c) adding a first non-ionic surfactant and mixing; d) adding at least a second non-ionic surfactant different from said first surfactant and mixing; e) adding demineralized water up to 100 and mixing, said steps being conducted not necessarily in the order described.
  • said at least one chelating agent is GLDA
  • said at least one alcohol-based solvent is 3- methoxy-3-methyl-l-butanol
  • said first non-ionic surfactant is Glycereth-6 Cocoate
  • said at least one second non-ionic surfactant is selected from an ethoxylated fatty alcohol RO(CH 2 CH 2 O) 7 H, wherein R is a C12-C18 alkyl group, and/or a heptyl polyglucoside.
  • said process for the production of the cleaning product according to the invention further comprises a step f) which involves the addition of at least one buffer system, for example the trisodium citrate - citric acid buffer system.
  • a further embodiment provides a step g) which involves the addition of one or more amphoteric surfactants, for example dipotassium 2-ethylhexyl dipropionate salt.
  • the production process of the cleaning product according to the present invention can comprise a step h) which involves the addition of one or more additives selected from odor suppressants (preferably zinc ricinoleate), perfumes, solvents, co solvents , anionic surfactants (preferably sodium lauryl sulfate, alkyl polysaccharides), preservatives, amphoteric surfactants (preferably alkyl betaine). Said process is preferably carried out at room temperature.
  • odor suppressants preferably zinc ricinoleate
  • perfumes preferably zinc ricinoleate
  • solvents preferably co solvents
  • anionic surfactants preferably sodium lauryl sulfate, alkyl polysaccharides
  • preservatives preferably alkyl betaine
  • step b) of said process is conducted for 10 minutes, while step c) is conducted for at least 15 minutes and step e) is conducted for 25-30 minutes.
  • Said process offers the advantage of generating a cleaning product characterized by a nanometric micellar composition in which the micelles have a particular flattened shape.
  • This feature is advantageous compared to the traditional spherical shape because in the flattened micelle the contact area between the micelle and the fat molecule is greater; therefore, the surface tension is further reduced while the wettability of the fat molecule increases: this allows obtaining a greater efficiency in terms of cleaning performance.
  • EXAMPLE 1 composition and process according to the invention
  • Table 1 shows an illustrative and non-limiting example of the components of a composition according to the invention, together with the relative quantities, trade names and corresponding suppliers.
  • Table 1 shows an illustrative and non-limiting example of the components of a composition according to the invention, together with the relative quantities, trade names and corresponding suppliers.
  • demineralized water is added, always stirring, until the desired level is reached (e.g. 100 liters) .
  • the mixer runs for 25-30 minutes.
  • Table 2 reports the chemical-physical features of the cleaning product according to the invention, as well as its ecological properties and the estimate of toxicity .
  • the cleaning product according to the present invention is extremely environmentally friendly and its use is safe for the health of the user.
  • the tensiometer measurements returned CMC values equal to 1.57% by weight for the LEVENOL F200 and two values equal to 0.27% and 1.23% by weight for the DEHYDOL LT-7.
  • the anomalous behavior of the double CMC suggests a structural change in the arrangement of the molecules, from a spherical shape to an ellipsoidal or rod-like shape.
  • the mixture of both surfactants has CMC values equal to 0.28% and 1.60% by weight, which leads to the conclusion that the mixture has a nanometric micellar structure at concentrations higher than the aforementioned CMC.
  • the critical micellar concentration (CMC) of a sample of the surfactant Glycereth-6 Cocoate was first determined by carrying out surface tension measurements with the Du Nouy ring method, using a solution of distilled water, sodium citrate 3.5 % by weight and 0.5% by weight citric acid.
  • the CMC of Glycereth-6 Cocoate is around 1.57% ⁇ 0.08 w/w.
  • the Dynamic Light Scattering (DLS) technique was used to verify the formation of aggregates once the CMC is reached and thus determine their size.
  • a 3% by weight of Glycereth-6 Cocoate sample was analyzed using a solvent consisting of a solution of distilled water, 3.5% by weight sodium citrate and 0.5% by weight citric acid.
  • the DLS analysis of the sample shows the presence of a single population of aggregates in solution having a hydrodynamic radius of about 11 nm.

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)
  • Detergent Compositions (AREA)
EP21730680.2A 2020-06-11 2021-06-10 Reinigungsprodukt und entsprechendes syntheseverfahren Pending EP4165153A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102020000014029A IT202000014029A1 (it) 2020-06-11 2020-06-11 Prodotto per la detergenza e relativo procedimento di sintesi.
PCT/IB2021/055094 WO2021250599A1 (en) 2020-06-11 2021-06-10 Cleaning product and related synthesis process

Publications (1)

Publication Number Publication Date
EP4165153A1 true EP4165153A1 (de) 2023-04-19

Family

ID=72266723

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21730680.2A Pending EP4165153A1 (de) 2020-06-11 2021-06-10 Reinigungsprodukt und entsprechendes syntheseverfahren

Country Status (3)

Country Link
EP (1) EP4165153A1 (de)
IT (1) IT202000014029A1 (de)
WO (1) WO2021250599A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023275269A1 (en) * 2021-06-30 2023-01-05 Nouryon Chemicals International B.V. Chelate-amphoteric surfactant liquid concentrates and use thereof in cleaning applications

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2327857C3 (de) * 1973-06-01 1982-04-29 Henkel KGaA, 4000 Düsseldorf Flüssiges schaumreguliertes Waschmittel
DE602004020010D1 (de) * 2003-04-08 2009-04-30 Kao Corp Flüssiges Reinigungsmittel
ATE554743T1 (de) * 2007-09-19 2012-05-15 Bubbles & Beyond Gmbh Reinigungsmittel zur entfernung von farbschichten von oberflächen, verfahren zur herstellung des mittels und verfahren zur reinigung
DE102017223459A1 (de) * 2017-12-20 2019-06-27 Henkel Ag & Co. Kgaa Waschmittel enthaltend Aminoxid und Zuckertenside

Also Published As

Publication number Publication date
WO2021250599A1 (en) 2021-12-16
IT202000014029A1 (it) 2021-12-11

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