EP2558561A1 - Method and composition for the treatment of a surface - Google Patents

Method and composition for the treatment of a surface

Info

Publication number
EP2558561A1
EP2558561A1 EP11712863A EP11712863A EP2558561A1 EP 2558561 A1 EP2558561 A1 EP 2558561A1 EP 11712863 A EP11712863 A EP 11712863A EP 11712863 A EP11712863 A EP 11712863A EP 2558561 A1 EP2558561 A1 EP 2558561A1
Authority
EP
European Patent Office
Prior art keywords
composition
hard surface
water
composition according
surface treatment
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Withdrawn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
EP11712863A
Other languages
German (de)
English (en)
French (fr)
Inventor
Somnath Das
Kingshuk Dutta
Amitava Pramanik
Srinivasa Gopalan Raman
Maya Treesa Saji
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to EP11712863A priority Critical patent/EP2558561A1/en
Publication of EP2558561A1 publication Critical patent/EP2558561A1/en
Withdrawn legal-status Critical Current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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/06—Inorganic compounds
    • C11D9/08—Water-soluble compounds
    • C11D9/10—Salts
    • 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
    • C11D9/00—Compositions of detergents based essentially on soap
    • C11D9/04—Compositions of detergents based essentially on soap containing compounding ingredients other than soaps
    • C11D9/22—Organic compounds, e.g. vitamins
    • C11D9/225—Polymers
    • 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
    • C11D2111/14—Hard surfaces

Definitions

  • This invention relates to a method and composition for treatment of a hard surface. It particularly relates to a method and composition for treatment of a surface for imparting repellence of aqueous soils.
  • Hard surfaces in the home or office are usually cleaned using liquid compositions which comprise one or more surfactants and possibly also pH adjusters like citric acid or sodium salts of citrate.
  • the cleaning compositions can be applied in diluted (in water) or undiluted form, in a spray, or rubbed using a cloth and any other convenient way.
  • the cleaning composition may be rinsed from the surface after the cleaning. It would be advantageous if the hard surface to be cleaned could be treated with a material which would assist in easier removal of soil and/or stains during subsequent cleaning. This is referred to as the next time cleaning benefit.
  • Soils on hard surfaces can become more difficult to remove when not cleaned soon after deposition. When not cleaned promptly, soils can become more adherent to surfaces, more viscous and generally tougher, and require more effort to clean. While not being bound by theory, this more difficult removal of soils can arise from the effects of drying out of soils, from chemical changes in soils, from reactions of soils with environmental agents such as oxygen, etc. Some soils are more susceptible than others to toughening reactions and processes. Soils comprising or containing chemically unsaturated oils and fats can become very tough and difficult to clean over time, especially when exposed to elevated temperatures. Even light can cause such fatty soils to toughen over time. As well as environmental factors, the processes of toughening of soils can be affected by the nature and composition of the surface on which the soil is located.
  • WO 02/18531 discloses a method for cleaning hard surfaces, wherein the surface is treated with an antioxidant, followed by allowing the surface to become dirty, and subsequently cleaning the surface.
  • the treatment of the surface with the antioxidant prior to the soiling leads to easier removal of the soil during the subsequent cleaning step.
  • the antioxidant may be present in a cleaning composition, or in a rinse composition that is applied after the cleaning.
  • cleaning compositions comprising antioxidants, preferably at a concentration of 0.1 -10 % by weight, are disclosed. Tannic acid was exemplified to be notably efficient.
  • WO 03/07289 A1 and WO 2006/108475 A1 discloses a method for removing fatty soil from a hard surface, the process comprising the sequential steps of (a) treating the hard surface with a liquid cleaning composition; (b) allowing the fatty soil to deposit; and (c) cleaning the surface to remove the fatty soil.
  • Self cleaning surfaces are disclosed in WO04037944 A1 , wherein a process and a composition are disclosed for producing surfaces that are self-cleaning by water, and in particular, there is disclosed an aqueous system for forming transparent self- cleaning surfaces.
  • an aqueous mixture for producing surfaces that are self-cleaning by water, and in particular, there is disclosed an aqueous system for forming transparent self- cleaning surfaces.
  • Nan particles having a particle size of less than 300 nanometers comprising Nan particles having a particle size of less than 300 nanometers and a surface modifier selected from the group consisting of water-soluble hydrophobic surface modifiers and water-dispersible hydrophobic surface modifiers capable of forming a continuous film from an aqueous solution is provided.
  • the aqueous mixture is applied to a surface, and a self-cleaning transparent coating is formed on the surface upon water evaporation.
  • the aqueous mixture is essentially free of organic solvents other than coalescing solvents.
  • the antioxidants as disclosed by the prior art also may suffer from disadvantages. Consumers may regard residues of antioxidants and/or Nan particles acid on the hard surfaces in e.g. kitchen and bathroom to be harmful and undesired. It is an object to provide a hard surface cleaning composition providing soil repellence to a surface.
  • composition can be applied reversibly. It is a further object of the invention that the surface treated with the composition is rendered water repellent.
  • composition further provides oily soil removal.
  • the present invention provides a hard surface treatment composition having a pH of not more than 8, comprising a base composition comprising: 20-75% by weight of a water soluble trivalent metal ion salt; 20-75% by weight of a saturated C 8 -C 2 4 fatty acid soap, and 5-20% by weight of a silicone oil.
  • the invention provides a method for treating a hard surface comprising the steps of: applying the composition according to anyone of claims 5 or 6 to a hard surface and leaving the surface to dry.
  • the invention provides the use of a composition according to anyone of the preceding claims for rendering a surface water repellent.
  • a hard surface treatment composition comprising a base composition comprising a water soluble trivalent metal ion salt, a saturated C 8 -C 2 4 fatty acid soap, and a silicone oil.
  • the base composition comprises a water soluble trivalent metal ion salt, a saturated C 8 -C 2 4 fatty acid soap, and a silicone oil, and provides the water and/or soil repellence benefit.
  • the base composition is preferably present in a concentration of between 10 and 100% by weight of a solid the hard surface treatment composition, more preferably more than 20%, still more preferably more than 30%, even more preferably more than 40%, or even more than 50% by weight, while the solid hard surface treatment composition preferably comprises less than 90% by weight of the base composition.
  • the base composition is preferably present in a concentration of between 10 and 1000 g/L, more preferably between 1 and 600 g/L, still more preferably between 10 and 500 g/L or even between 100 and 300 g/L.
  • the base composition is preferably present in a concentration of between 0.5 and 100 g/L, preferably more than 1 g/L, still more preferably more than 2 g/L, or even more than 5 g/L, while the composition preferably comprises less than 75 g/L, more preferably less than 60 g/L, still more preferably less than 50 g/L, even more preferably less than 40 g/L or even less than 30 g/L
  • the water soluble trivalent metal ion salt has solubility of at least 0.05 g per 100 g water at 25 °C.
  • the solubility of the trivalent metal ion salt is preferably greater than 0.1 , more preferably greater than 1 and most preferably greater than 5 g per 100 g of water at a temperature of 25 °C.
  • the trivalent metal ion is preferably selected from aluminium, iron, chromium, bismuth or titanium, more preferably the trivalent metal is chosen from aluminium or iron, most preferably, the trivalent metal is aluminium. Chromium III is not preferred for household use as it is toxic.
  • the anion of the water soluble trivalent metal ion salt is preferably selected from chloride, phosphate, nitrate, and sulphate.
  • An especially preferred trivalent metal ion salt is poly aluminium chloride.
  • the trivalent metal ion salt is present in the base composition in a concentration of between 20 and 75% by weight, preferably more than 25%, more preferably more than 30%, still more preferably more than 35%, but preferably not more than 70%, more preferably not more than 65%, still more preferably not more than 60%, or even less than 55% by weight of the base composition.
  • Fatty acid soap preferably more than 25%, more preferably more than 30%, still more preferably more than 35%, but preferably not more than 70%, more preferably not more than 65%, still more preferably not more than 60%, or even less than 55% by weight of the base composition.
  • the saturated soap is a water soluble C 8 -C 2 4 soap, preferably C 8 -C 2 o soap, more preferably C 8 -Ci 6 soap, and most preferably C 8 -Ci 4 soap.
  • saturated soap is meant in the context of the present invention that the iodine value of the soap, which is commonly known and used in the art to indicate the degree of unsaturation, is preferably less than 20, more preferably less than 10, and most preferably less than 5.
  • Saturated soap having no carbon-carbon double bond or triple bond is particularly preferred.
  • the soap may be water-soluble or water insoluble.
  • water-soluble soaps that can be used according to the present invention include sodium or potassium laureate, sodium or potassium caprylate, and potassium myristate and mixtures thereof.
  • the fatty acid soap is present in the base composition in a concentration of between 20 and 75% by weight, preferably more than 25%, more preferably more than 30%, still more preferably more than 35%, but preferably not more than 70%, more preferably not more than 65%, still more preferably not more than 60%, or even less than 55% by weight of the base composition.
  • the base composition further comprises a silicone oil, preferably a quaternary silicone oil, e.g. PDMS (poly dimethyl siloxane), PMHS (polymethylhydroxysiloxane), isobutyltrimethoxysilane, octadecyl trichloro silane, triisopropylsilane or their combinations.
  • a silicone oil preferably a quaternary silicone oil, e.g. PDMS (poly dimethyl siloxane), PMHS (polymethylhydroxysiloxane), isobutyltrimethoxysilane, octadecyl trichloro silane, triisopropylsilane or their combinations.
  • This silicone oil is present in the base composition in a concentration of between 5 and 20% by weight.
  • the base composition preferably comprises less than 15% by weight.
  • the hard surface treatment composition may further comprise pH modifying agents, anti-microbial agents, further surfactants, electrolytes, and sensorial molecules including fragrances, fluorescer molecules, dyes and shading dyes Solvent
  • Liquid hard surface treatment compositions comprise the base composition according to the invention and a solvent.
  • the solvent is preferably selected from water and lower alcohols.
  • Preferred alcohols include methanol, ethanol, 1 -propanol and 2-propanol (also known as iso-propanol, or isopropyl alcohol), 2-propanol being the most preferred.
  • the solvent is preferably a mixture of water and alcohol.
  • the alcohol provides faster evaporation from the surface and aids in the solubilisation of oily soils.
  • the alcohohwater ratio of such mixtures may be anything between 1 :99.9 and 99.9:1 , preferably the ratio is between 2:98 98:2, more preferably the ratio is between 5:95 and 30:70, most preferably between 10:90 and 25:75.
  • the hard surface treatment compositions may further comprise an anti microbial agent, which is preferably selected from alcohols, including linalool, geraniol, menthol, terpineol; phenols, including thymol, carvacrol and eugenol; salicylic acid derivatives, and zinc based anti-bacterial agents, including zinc chloride, silver salts and copper salts.
  • an anti microbial agent which is preferably selected from alcohols, including linalool, geraniol, menthol, terpineol; phenols, including thymol, carvacrol and eugenol; salicylic acid derivatives, and zinc based anti-bacterial agents, including zinc chloride, silver salts and copper salts.
  • an anti microbial agent which is preferably selected from alcohols, including linalool, geraniol, menthol, terpineol; phenols, including thymol, carvacrol and eugenol; salicy
  • the hard surface treatment compositions according to the invention may further comprise a pH modifying agent.
  • Typical pH modifying agents in the context of the present invention include both acidic and alkaline pH modifying agents.
  • Acidic pH modifying agents include both inorganic as well as organic acids.
  • Alkaline pH modifying agents include both inorganic as well as organic bases.
  • Preferred alkaline pH modifying agents are selected from
  • the pH of the aqueous components is preferably below the iso-electric point.
  • the pH of the hard surface cleaning composition at the concentration of use is preferably between 1 and 8, more preferably below 6 or even below 4.
  • the hard surface treatment composition has a pH of not more than 8 at a concentration of 0.5 to 100 g/L of the base composition in water.
  • the hard surface may be any household or industrial hard surface. Typical hard surfaces include windows, tiles and other ceramic materials, metal surfaces, cooker tops, etc.
  • composition according to anyone of the preceding claims for rendering a surface water repellent is also included.
  • compositions are applied to the hard surface in the form of a concentrated or dilute liquid composition.
  • a liquid hard surface treatment composition comprises 1 - 50 g/L of the base composition according to the invention dissolved in the solvent; more preferably at least 2 g/L or even at least 5 g/L, while preferably less than 40 g/L or even less than 25 g/L.
  • the treatment is typically by treating a surface with the composition according to the invention.
  • the surface is preferably cleaned prior to treatment.
  • the surface is left to dry. After drying the surface will then exhibit water repellence and repellence aqueous stains.
  • Example 1 water repellence test
  • Example 2 water repellence test
  • the water repellence effect of the compositions according to the invention are compared with comparative examples outside the claimed range.
  • polymethylhydroxysiloxane (PMHS, ex Aldrich, USA) were dissolved in distilled water in the concentrations given in the table below. In the comparative examples, no PDMS was used.
  • the material was applied to a glass surface by applying 2 mL of the formulation over one side of a 100 cm2 of a glass surface. The layer of liquid was left on the glass surface for ⁇ 30 seconds. The glass surface was wiped with a tissue paper till it is completely dry. The glass surface hydrophobicity was determined by water droplet contact angle testing.
  • the contact angle of a sessile droplet was measured using a Kruss goniometer by placing a 10 microlitre of distilled water droplet on the glass slide. The angle was analyzed by the image J software using the Drop snake plug-in.
  • the roll off angle was measured by applying 50 microlitre of water onto a glass slide (microscope glass slide) and by tilting the treated glass slide over a fixed point.
  • + refers to the easily sliding behaviour therefore more stain repellent; and
  • - refers to sticking behaviour therefore less stain repellent
  • the transparency was determined by means of the transmittance of the substrate (glass slide) that was measured in comparison to the untreated surface using a Perkin Elmer Lambda 35 uv-vis spectrophotometer between 400-700 nm.
  • the table above shows that all examples and comparative examples provide a treated surface without compromising the transparency.
  • the contact angle, as a measure for the water repellence, in the examples and comparative examples are high. However, only the examples show good sliding behaviour, thus reducing deposition of soil to the surface.
  • the effect of PAC, DCFA and PDMS individually or using 2 out of 3 are compared to the composition according to the invention including all 3 ingredients.
  • the material is applied in the same way as in example 1 and the contact angle is tested according to the same method.
  • Example 3 Liquid composition comprising an alcohohwater mixture.
  • the rate of evaporation of the different formulations was studied by putting 10 microlitre of the solution and smearing it on a 2.5cmX7.5cm glass microscopic slide. The time for drying was evaluated using a stopwatch.
  • Example 1 The composition of Example 1 , example composition 3, was used at different pH, wherein the pH was adjusted with 1 M hydrochloric acid (HCI) or with 1 M caustic soda (NaOH).
  • HCI hydrochloric acid
  • NaOH 1 M caustic soda
  • the roll off angle for 50 microlitre of water was measured by tilting the treated glass microscopic slide about a fixed point; wherein + refers to the easily sliding behaviour therefore more stain repellent; - refers to sticking behaviour therefore less stain repellent.

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)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
EP11712863A 2010-04-13 2011-04-07 Method and composition for the treatment of a surface Withdrawn EP2558561A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11712863A EP2558561A1 (en) 2010-04-13 2011-04-07 Method and composition for the treatment of a surface

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IN1205MU2010 2010-04-13
EP10164007 2010-05-27
PCT/EP2011/055441 WO2011128248A1 (en) 2010-04-13 2011-04-07 Method and composition for the treatment of a surface
EP11712863A EP2558561A1 (en) 2010-04-13 2011-04-07 Method and composition for the treatment of a surface

Publications (1)

Publication Number Publication Date
EP2558561A1 true EP2558561A1 (en) 2013-02-20

Family

ID=44168102

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11712863A Withdrawn EP2558561A1 (en) 2010-04-13 2011-04-07 Method and composition for the treatment of a surface

Country Status (7)

Country Link
EP (1) EP2558561A1 (pt)
CN (1) CN102985522A (pt)
AR (1) AR082759A1 (pt)
BR (1) BR112012025829A2 (pt)
EA (1) EA201201388A1 (pt)
WO (1) WO2011128248A1 (pt)
ZA (1) ZA201206361B (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106398911A (zh) * 2016-08-26 2017-02-15 广西棕海园林工程有限公司 环保型瓷砖表面清洁剂及其制备方法、使用方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345142A (en) * 1940-04-02 1944-03-28 Muller Adalbert Process for rendering materials water-repellent
US3081190A (en) * 1959-12-14 1963-03-12 Nalco Chemical Co New composition of matter and methods involving the use of said composition of matter
US3540839A (en) * 1967-04-19 1970-11-17 Nat Lead Co Polymeric chromium sulfatozirconate compositions,their preparation and use
JP2000265369A (ja) * 1999-03-19 2000-09-26 Toray Ind Inc 繊維用処理剤および繊維構造物の処理方法
GB0007654D0 (en) * 2000-03-29 2000-05-17 Unilever Plc Laundry treatment for fabrics
WO2008040785A1 (en) * 2006-10-06 2008-04-10 Dow Corning Corporation Process for preparing fabric softener compositions
US7637271B1 (en) * 2008-10-30 2009-12-29 The Clorox Company Polyaluminum compositions
ES2441119T3 (es) * 2008-12-16 2014-01-31 Unilever Nv Método y composición para el tratamiento de un sustrato

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011128248A1 *

Also Published As

Publication number Publication date
ZA201206361B (en) 2013-10-30
CN102985522A (zh) 2013-03-20
WO2011128248A1 (en) 2011-10-20
BR112012025829A2 (pt) 2017-07-18
EA201201388A1 (ru) 2013-04-30
AR082759A1 (es) 2013-01-09

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