EP3234090A1 - Verwendung einer komponente in tensidarmen waschmitteln und verfahren zur herstellung der komponente - Google Patents

Verwendung einer komponente in tensidarmen waschmitteln und verfahren zur herstellung der komponente

Info

Publication number
EP3234090A1
EP3234090A1 EP15830838.7A EP15830838A EP3234090A1 EP 3234090 A1 EP3234090 A1 EP 3234090A1 EP 15830838 A EP15830838 A EP 15830838A EP 3234090 A1 EP3234090 A1 EP 3234090A1
Authority
EP
European Patent Office
Prior art keywords
nanoparticles
anions
gel
solution
water
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Withdrawn
Application number
EP15830838.7A
Other languages
English (en)
French (fr)
Inventor
Maria Fernanda Garcia
Maria De Los Angeles Garcia
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.)
SolBat Srl
Original Assignee
SolBat Srl
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 SolBat Srl filed Critical SolBat Srl
Publication of EP3234090A1 publication Critical patent/EP3234090A1/de
Withdrawn legal-status Critical Current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
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • 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
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • 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
    • C11D3/2079—Monocarboxylic 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
    • C11D3/2082—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
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3945—Organic per-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
    • C11D3/395—Bleaching agents
    • C11D3/3953—Inorganic bleaching agents

Definitions

  • the following invention relates to a component for formulations of strong detergency detergents, and/or for very low-surfactant detergents, with respect to prior art detergents, to be used, for instance, for home cleaning, dish-washing, or for the laundry, as well as for personal hygiene.
  • the invention relates to a process for manufacturing said component.
  • surfactants are used to obtain water solutions that have a detergent power, which is not the case for water alone, in particular, to treat grease dirt particles.
  • they are organic compounds in which the molecules have a hydrophobic zone, usually comprising a hydrocarbon chain comprising 10 to 20 carbon atoms, and a water soluble hydrophilic zone of various chemical nature.
  • Surfactants can decrease the surface tension between two liquids, in this case a washing solution and a grease or oily material, which usually has a positive charge and forms the dirt stuck on a surface to be cleaned.
  • Surfactants can also decrease the interface tension between the washing solution and the surface itself, which has a negative charge.
  • surfactants create micelles, which are aggregates of molecules. These have a central structure in which the hydrophobic zone is at the centre and can capture the dirt particles, while peripheral hydrophilic zones can solubilize the complexes formed by micelles and dirt particles, and maintain them in a solution state. More in detail, the surfactant molecules surround the grease particles and give them an electric charge that has the same sign of the surface to be cleaned. This way, the adhesion forces between the surface and the grease decrease until the grease particle is detached, synergistically with the agitation of the washing solution and with the solubilization of the micelles.
  • US 2006/009370 describes a process for removing soil from a cotton or a cotton/wool blend material and to protect it, wherein a step is provided of contacting the material with a composition in which nanoparticles are provided of size set between 5 to 500 nm, comprising, in particular, silicates, as well as an hydrophilizing agent selected among C2-C4 alcohols, alkyl ethers of various glycols, polyglycols that are liquid at room temperature, esters of carboxylic acids, or a mixture thereof.
  • a composition in which nanoparticles are provided of size set between 5 to 500 nm comprising, in particular, silicates, as well as an hydrophilizing agent selected among C2-C4 alcohols, alkyl ethers of various glycols, polyglycols that are liquid at room temperature, esters of carboxylic acids, or a mixture thereof.
  • a component for detergents said component having the form of a gel, whose main feature is that it comprises:
  • nanoparticles having a size set between 5 and 250 nanometres, in particular between 20 and 100 nanometres;
  • such nanoparticles have a surface microporosity, so as to enhance the adsorption of said selective anions.
  • the critical micellar concentration of a surfactant is the concentration of a solution thereof beyond which, above a certain critical micellar temperature, a certain number of surfactant molecules aggregate to form micelles. In these conditions, the above described effect of "emulsifying" the grease particles occurs, which makes easier to remove them.
  • a further surfactant addition to a washing solution causes the production of new micelles, or the growth of the existing ones, but it does not remarkably increase the free surfactant concentration, from which the detergent power depends. Therefore, detergent power 13 does not increase, and surface tension 11 and interface tension 12 does not change as well. Therefore, the lower the CMC, the more is enhanced the production of micelles, and the stronger is the detergent power. From a chemical-physical viewpoint, low CMC values improve the kinetic and thermodynamic stability of the micelles, and prevent them from reverting to the state of free molecules.
  • the above mentioned selective anions A " are adsorbed on the microporous surface of nanoparticles 20 and there they form, in particular, a negatively charged layer.
  • gel particles 20, negatively charged by anions A " (Fig. 2) electrostatically attract positive grease particles 31 , and remove them from substrate 22.
  • Grease 31 is strongly fixed to gel microporous structure 20, which creates a gel-grease system 30, whereas the positive ions layer 32 formed about nanoparticle 30, along with the agitation of washing solution 33, causes nanoparticle-dirt system 30 to detach from the surface 34 to be cleaned, and to disperse it into washing solution 32.
  • gel-grease system 30 becomes a sort of neutral micelle that drastically limits the electrostatic attractive forces between micelles 35 of the surfactant of the detergent, spacing them apart, and then substantially preventing them from forming larger surfactant aggregates. In these conditions, the surfactant is exploited more effectively. This way, all the nanoparticles that are not associated become substantially active.
  • the detergents obtained by adding the gel are particularly well-suited for body hygiene, since it has been shown that low CMC values have a less irritating effect on the skin.
  • the anions adsorbed on the nanoparticles are indicated as selective anions because they differ from one another for their specific effects in connection with a particular type of dirt. More in detail,
  • bicarbonate ions distinguish themselves for a whitening, degreasing and odour-absorbing effect
  • hypochlorite ions distinguish themselves for a whitening and bactericidal effect
  • oxalate ions distinguish themselves for a whitening and rust-preventing effect
  • citrate ions distinguish themselves for a scale-preventing effect
  • peroxyacetate ions have whitening and bactericidal effects.
  • the component comprises an amount of a thickening agent, which can be an organic agent such as xanthan gum or guar gum, or an inorganic agent, such as bentonite, of a type compatible with a detergent use.
  • a thickening agent which can be an organic agent such as xanthan gum or guar gum, or an inorganic agent, such as bentonite, of a type compatible with a detergent use. This is to enhance the rheological balance and therefore the stability of the gel.
  • the use is provided of such a component in a surfactant-containing detergent.
  • the surfactants have a weight percentage lower than 5% of the detergent, more in particular, the surfactants comprise an anionic surfactant that has a weight percentage set between 1 % and 4%.
  • the gel nanoparticles comprise a compound selected from the group consisting of: amorphous silica; aluminium hydroxide; activated alumina.
  • amorphous silica has the advantage of being obtained starting from low cost raw materials, such as the sodium silicate, which reduces the gel manufacturing costs. Moreover, the gel obtained starting from sodium silicate has the advantage of being substantially transparent, as it is desirable in some types of detergents. On the contrary, alumina or aluminium hydroxide-containing gels are normally white.
  • a process for making a component for detergents comprises the steps of:
  • a gel comprising water and nanoparticles that have a size set between 5 and 250 nanometres;
  • each selective anions adsorbed on the nanoparticles distinguish itself for a specific action in connection with a particular type of dirt.
  • the step of forming the gel comprises the steps of:
  • the nanoparticles are formed in situ by a controlled gelling process starting from the solution of the nanoparticles-forming compound.
  • the water solution of a nanoparticles-forming compound is a solution of a silicate, in particular of an alkali metal selected from the group consisting of: Lithium (Li), Sodium (Na) and Potassium (K), or a combination thereof, and the step of mixing occurs with a pH decrease down to a final pH value lower than 9, preferably close to 9, in order to cause a gel comprising amorphous silica nanoparticles to form by a precipitation step.
  • a silicate in particular of an alkali metal selected from the group consisting of: Lithium (Li), Sodium (Na) and Potassium (K), or a combination thereof
  • the silicate of an alkali metal has the general formula xSi02:M20, wherein M is selected from the group consisting of: Li, Na and K, or a combination thereof, and x is a molar ratio between moles of silica S1O2 and moles of M2O.
  • the water solution of a nanoparticles-forming compound is a solution of an aluminium salt, for example Aluminium chloride (AlC ) or Aluminium sulfate (Al2(SO4) 3 ), or Aluminium nitrate (AI(N03)3) or a combination thereof.
  • AlC Aluminium chloride
  • Al2(SO4) 3 Aluminium sulfate
  • AI(N03)3 Aluminium nitrate
  • the gelling agent can be a hydroxide selected from the group consisting of: sodium hydroxide (NaOH), potassium hydroxide (KOH), ammonium hydroxide (NH4OH), calcium hydroxide (Ca(OH)2) and the step of mixing the solution of the nanoparticles-forming compound with the gelling agent occurs with a pH increase up to a final pH value higher than 5, preferably higher than 8, in order to cause a gel comprising aluminium hydroxide nanoparticles to form by a precipitation step.
  • aluminium which is an amphoteric element, is prevented from being changed from insoluble hydroxide into soluble aluminate.
  • the gelling i.e. the precipitation of aluminium hydroxide, is actually carried out at a pH set between 5 and 11 , preferably at pH of about 8.
  • the gelling agent is selected among the hydroxides of cations that form a soluble salt with this anion.
  • the gelling agent can be sodium hydroxide, and the gel formation reactions are respectively:
  • the gelling agent can be Chlorine. Chlorine, besides gelling the silicate solution, causes the formation of specific hypochlorite anion CIO-, which has a whitening and bactericidal effect, as shown hereinafter. More in detail, the reaction takes place:
  • the gelling agent can be carbon dioxide.
  • the water solution of the precursor is brought into contact with CO2, the latter reacts with the water to form carbonic acid H2CO3, an instable acid, according to the reaction
  • the gelling agent can be a water-soluble compound adapted to provide, starting from a concentration set between 1 N and 5N, a solution having a pH value lower than or equal to 9.
  • the gelling agent can be a buffer solution, comprising in particular sodium acetate and acetic acid (pad ChbCOONa/Ch COOH), or sodium oxalate and oxalic acid (pad NaOOC-COONa /HOOC-COOH), or sodium citrate and citric acid (CeHsOyNas/CeHsO?). Effects and advantages specific of these compounds, acids and respective salts, and of the buffer solutions, will be described hereinafter.
  • the gel formation reactions i.e. the reactions of forming amorphous silica SiO2.H2O from silicate, in this case, from sodium silicate Na2SiO3, are the following:
  • the sodium silicate solution has a pH set between 1 1 and 13.5.
  • the nanoparticles-forming compound in water is sodium silicate Na2Si03, as described.
  • Sodium silicate is preferable due to its low cost and also because it leads to a transparent gel.
  • the sodium silicate solution has a concentration set between 5% and 10% by weight.
  • the step of prearranging a water solution of sodium silicate as the nanoparticles-forming compound comprises a step of diluting an initial solution of Na2Si03 that has, for instance, a density set between 38°Be and 40°Be.
  • the gelling agent is selected from the group consisting of: hydrochloric acid (HCI); nitric acid (HNO3); phosphoric acid (H3PO4); sulfuric acid (H2SO4); perchloric acid (HCIO4); boric acid (H3BO3); acetic acid (CH3COOH); sodium acetate (Ch COONa); oxalic acid (HOOC- COOH); sodium oxalate (NaOOC-COONa); propionic acid (CH3CH2COOH); citric acid (C6H8O7); sodium citrate (Na3C6Hs07); peroxyacetic acid (CH3COOOH); sodium bicarbonate (NaHC03); ammonium sulfate ((NH 4 )2S04); ammonium chloride (NH4CI); a combination thereof.
  • HCI hydrochloric acid
  • HNO3 nitric acid
  • H3PO4 phosphoric acid
  • sulfuric acid H2SO4
  • Gelling agents comprising citric acid and/or sodium citrate, i.e. solutions of one of these two compounds, or the corresponding buffer solution, besides causing a gelification of the silicate solution, also cause specific citrate ions to be produced, with a scale-preventing effect.
  • Gelling agents comprising acetic acid and/or sodium acetate, i.e. solutions of one of these two compounds or the corresponding buffer solution, besides causing a gelification of the silicate solution, also cause specific acetate ions to be produced, with a scale-preventing and degreasing effect
  • Gelling agents comprising oxalic acid and/or sodium oxalate, i.e. solutions of one of these two compounds or the corresponding buffer solution, besides causing a gelification of the silicate solution, also cause specific oxalate ions to be produced, with a whitening power and rust preventing effect.
  • a gelling agent comprising sodium bicarbonate besides causing a gelification of the silicate solution, also causes specific bicarbonate ions to be produced, with a degreasing and whitening effect.
  • a gelling agent comprising peroxyacetic acid besides causing a gelification of the silicate solution, also causes specific peroxyacetate ions to be produced, with a whitening and bactericidal effect.
  • this compound in particular an inorganic acid, has a concentration set between 1 N and 5N.
  • concentration set between 1 N and 5N.
  • Such dilution is useful to avoid that lumps are formed, due to the electrostatic interaction between the ions produced from the acids in the water solution.
  • the pH of a solution of a silicate depends, in an obvious way for a skilled person, on the concentration and on the molar ratio, i.e. on the ratio between S1O2 moles and Na 2 0 moles of the effective ionic formula of the silicate, Na 2 0 xSi0 2 , in this case sodium silicate, which is normally indicated by the simplified formula Na 2 Si03, for the sake of simplicity.
  • the step of adsorption of selective anions is carried out by bringing the gelification mixture into contact with an adsorption reagent selected from the group consisting of:
  • C0 2 carbon dioxide
  • CI2 chlorine
  • NaHCOs sodium bicarbonate
  • citric acid ( ⁇ ) which has a scale-preventing effect, in order to cause
  • the step of adsorbing selective anions on the nanoparticles is carried out in situ during the step of mixing and of gelling the gelification mixture.
  • the gelling agent can be selected among the compounds capable of forming selective anions, in other words the gelling agent itself is adapted to provide these selective anions.
  • the gelling agent can be selected from the group consisting of:
  • a salt or an organic acid which in water is adapted to provide a solution having a pH value lower than or equal to 9, starting from a concentration between 1 N and 5N,
  • the gelling agent comprises chlorine gas and, during the step of mixing and gelling, the gelification mixture is maintained at a reaction temperature lower than a predetermined temperature, in particular the reaction temperature is close to or lower than 20°C.
  • the reaction temperature In order to form the gel in the presence of chlorine gas, the reaction temperature must be maintained at about 20°C, in order to avoid the formation of different compounds.
  • the step of adsorbing selective anions on the nanoparticles is carried out on the gel once the step of mixing and gelling the gelification mixture has occurred
  • a detergent comprising a component as described above, and/or obtained according to the above described method.
  • the step of forming a gel comprises a step of dispersing in water nanoparticles having a specific surface area, i.e. a ratio between the overall surface of the nanoparticle and the weight of the particle set between 250 and 450 m 2 /g.
  • the gel is produced from already formed nanoparticles.
  • these nanoparticles comprise activated alumina.
  • the process comprises a step of adding a thickening agent, which can be of an organic type, such as xanthan gum, guar gum, or of an inorganic type, for example a bentonite compatible with detergents formulations.
  • a thickening agent which can be of an organic type, such as xanthan gum, guar gum, or of an inorganic type, for example a bentonite compatible with detergents formulations.
  • the thickening agent is used to assist the Theological balance.
  • the amount of thickening agent can generally be set between 0.1 % and 0.3% by weight in the final detergent.
  • the step of mixing the solution of the nanoparticles-forming compound with a gelling agent can be carried out in a conventional container equipped with an agitator and, possibly, with a recycle duct.
  • the agitator comprises blades configured in such a way to limit foam formation.
  • the end of the step of mixing and gelling can be identified by reading the pH value of the mixture, in particular it can be identified when the pH value drops below a predetermined value, which is lower than or equal to 9.
  • the silicate solution in order to form the gel, different ratios between the silicate solution and the initial osmotized water can be selected.
  • the nanoparticles-forming compound in water is sodium silicate
  • a sodium silicate solution of density 38-40°Be i.e. 1.4 g/cm 3
  • concentration of about 35% by weight volume ratios (H20:Na2Si03) can be used from 4:1 to 8: 1 , as shown in table 1.
  • a ratio of 6:1 is used.
  • these surfactants may comprise:
  • an anionic surfactant in a weight percentage set between 1 % and 3%; a non-ionic surfactant, in a weight percentage lower than 1 %.
  • dishwashing detergent having a formulation as indicated below:
  • a gel as described above in a weight percentage set between 50% and 85%; surfactants, in a weight percentage set between 1 % and 4%; further water in addition to the water contained in the gel.
  • the surfactants may comprise:
  • an anionic surfactant in a weight percentage set between 1% and 3%; a non-ionic surfactant, in a weight percentage lower than 1 %.
  • dishwashing detergent such as perfume, for instance in an amount of 0 ⁇ 0.5% by weight.
  • Anionic and/or non-ionic and/or amphoteric surfactants 10 ⁇ 35%
  • Inorganic salts 0 ⁇ 5%
  • laundry detergents having a formula comprising:
  • surfactants in a weight percentage set between 1% and 4%;
  • the surfactants may comprise:
  • an anionic surfactant in a weight percentage set between 1% and 3%; a non-ionic surfactant, in a weight percentage lower than 1 %.
  • dishwashing detergent such as perfume and preservatives, for example in an amount of 0.2 ⁇ 0.5% by weight.
  • anionic and non-ionic surfactants 10-35%
  • amphoteric surfactants 0-5% Ethanol / isopropyl alcohol: 0-10%
  • anti-redeposers 0.2-5%
  • perfume other components such as perfume, enzymes, optical brighteners, antifoam agents, silicones, stabilizers, preservatives: 0.2-0.5%
  • Fig. 1 is diagram that diagrammatically shows the trend of the properties of a surfactant versus its concentration
  • Fig. 2 diagrammatically shows the structure of a nanoparticle after adsorption of selective anions
  • Fig. 3 diagrammatically shows the mechanism of action of a surfactant in comparison with the mechanism of action of the nanoparticles
  • Figs. 4, 5 and 6 are comparative CMC curves for three different types of detergents, for hand and machine laundry, for wool and delicate fabrics, and for dishwashing, in the presence of and without the component according to the invention.
  • Na2Si03 sodium silicate
  • HCI hydrochloric acid
  • NaHC03 solid sodium bicarbonate
  • potassium silicate (K2S1 3) as the nanoparticles-forming compound
  • pure carbon dioxide (CO2) as the gelling agent
  • selective anions also in this case bicarbonate ions (example 2).
  • the pH value at the end of the gelling step was 9.
  • the agitation was continued until complete dissolution, causing an adsorption of the citrate ions, obtaining a gel with these selective ions adsorbed on its own surface.
  • test detergents As described more in detail hereinafter, three detergents containing the component according to the invention, indicated hereinafter as test detergents, were prepared for hand and machine laundry, for wool and delicate fabrics and for dishwashing.
  • CMC critical micellar concentration
  • Anionic surfactants 5 ⁇ 15%
  • Non-ionic surfactants ⁇ 5%
  • An exemplary dishwashing detergent was prepared according to the invention, containing an amount of gel of the type of exemplary gel n.1 , which had bicarbonate ions adsorbed on the gel surface, and had the following formula:
  • anionic surfactants 1.35%
  • non-ionic surfactants 0.5%
  • preservatives minor components: preservatives.
  • Washing solutions were used at decreasing concentrations of the reference detergent and of the nano-detergent, starting from the concentration recommended by the producer, assumed as 100% concentration, and then decreasing it progressively to 80%, 60%, 40% and 20%.
  • anionic surfactants 5 ⁇ 15%
  • non-ionic surfactants ⁇ 5%
  • soap methylchloroisothiazoline, methylisotioazolinone, perfume.
  • An exemplary laundry detergent was prepared according to the invention, containing an amount of gel of the type of exemplary gel n.6, which had the following formulation:
  • anionic surfactants 1 %

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Detergent Compositions (AREA)
EP15830838.7A 2014-11-27 2015-11-27 Verwendung einer komponente in tensidarmen waschmitteln und verfahren zur herstellung der komponente Withdrawn EP3234090A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPI20140088 2014-11-27
PCT/IB2015/059160 WO2016084036A1 (en) 2014-11-27 2015-11-27 Use of a component in low-surfactant detergents and process for making said component

Publications (1)

Publication Number Publication Date
EP3234090A1 true EP3234090A1 (de) 2017-10-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP15830838.7A Withdrawn EP3234090A1 (de) 2014-11-27 2015-11-27 Verwendung einer komponente in tensidarmen waschmitteln und verfahren zur herstellung der komponente

Country Status (2)

Country Link
EP (1) EP3234090A1 (de)
WO (1) WO2016084036A1 (de)

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Publication number Priority date Publication date Assignee Title
EP3144374A1 (de) 2015-09-17 2017-03-22 University College Dublin National University Of Ireland, Dublin Enzymfunktionalisierte nanobeads für anti-biofouling-zwecke

Family Cites Families (4)

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Publication number Priority date Publication date Assignee Title
DE10021726A1 (de) 2000-05-04 2001-11-15 Henkel Kgaa Verwendung von nanoskaligen Teilchen zur Verbesserung der Schmutzablösung
DE602005019336D1 (de) * 2005-11-09 2010-03-25 Ecolab Inc Zusammensetzung mit oberflächenmodifizierenden eigenschaften
US7976624B2 (en) * 2009-12-04 2011-07-12 Ashland Licensing And Intellectual Property, Llc Nano gel wax
EP2970815B1 (de) * 2013-03-14 2021-04-21 Howard University Gelierende nanofluide für dispersionsstabilität

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Title
None *
See also references of WO2016084036A1 *

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Publication number Publication date
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