EP3940049A1 - Mannosylerythritol-lipid mit flüssigen spülhilfsmitteln - Google Patents

Mannosylerythritol-lipid mit flüssigen spülhilfsmitteln Download PDF

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Publication number
EP3940049A1
EP3940049A1 EP20185460.1A EP20185460A EP3940049A1 EP 3940049 A1 EP3940049 A1 EP 3940049A1 EP 20185460 A EP20185460 A EP 20185460A EP 3940049 A1 EP3940049 A1 EP 3940049A1
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EP
European Patent Office
Prior art keywords
rinse aid
aid composition
acid
composition according
preferred
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
EP20185460.1A
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English (en)
French (fr)
Inventor
Stefan Müller
Manja HENZE
Dennis VAN ELDIK
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.)
Dalli Werke GmbH and Co KG
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Dalli Werke GmbH and Co KG
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 Dalli Werke GmbH and Co KG filed Critical Dalli Werke GmbH and Co KG
Priority to EP20185460.1A priority Critical patent/EP3940049A1/de
Publication of EP3940049A1 publication Critical patent/EP3940049A1/de
Pending legal-status Critical Current

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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
    • C11D1/662—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
    • C11D1/02—Anionic compounds
    • C11D1/34—Derivatives of acids of phosphorus
    • 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
    • C11D1/667—Neutral esters, e.g. sorbitan esters
    • 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
    • C11D1/86—Mixtures of anionic, cationic, and non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap 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
    • 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

  • the present invention refers to a liquid rinse aid composition
  • a liquid rinse aid composition comprising a biosurfactant selected from the group of mannosylerythritol lipids, the use of such compositions in an automatic dish washer and methods for cleaning kitchenware and/or tableware in an automatic dishwasher comprising bringing such a composition into contact with said kitchenware and/or tableware during the rinse step.
  • Rinse aids are added during the rinsing step of automatic dishwashing programs to prevent droplet formation, so that water drains from the surfaces in thin sheets, rather than forming droplets, which prevents "spotting".
  • “Spotting" on washed items is caused by droplets of water drying and leaving behind dissolved limescale minerals, thereby rendering the washed table- or kitchenware less attractive to the consumer.
  • Rinse aids can also improve drying performance as there is less water remaining to be evaporated off the washed items.
  • a thinner sheet of water also has a larger surface-area than a droplet of the same volume, which increases the likelihood of water molecules evaporating. This results in less energy consumption in order to dry the washed items.
  • rinse aids comprising nonionic surfactants.
  • conventional rinse aids entirely rely on nonionic surfactants derived from ethoxylated fatty alcohols.
  • Such surfactants are synthesized from petroleum fractions and therefore require high amounts of energy and non-renewable resources during production. Consequently, there is a need for rinse aid compositions being more environmentally friendly and saving recources. It was therefore an object of the present invention to provide a rinse aid composition yielding excellent spotting results, in which at least a part of conventional nonionic surfactants is saved. This object is met by the use of particular, selected surfactants known in the art as biosurfactants.
  • Biosurfactants are surfactants which can be produced by biotechnological processes, i.e. using fungi or bacteria, from renewable resources, like sugars and/or oils derived from plants.
  • a further advantage of biosurfactants is that these compounds are readily biodegradable.
  • a drawback of the replacement of conventional nonionic surfactants by biosurfactants is a decrease in drying and spotting performance of the resulting rinse aids.
  • the present inventors have surprisingly found that drying and spotting performance of rinse aid compositions comprising biosurfactants can be improved by incorporating mannosylerythritol lipids into such rinse aid compositions.
  • Mannosylerythritol lipids are molecules having the general formula (I) below.
  • n may be an integer having a value between 1 and 24, preferably between 2 and 18, more preferred between 4 and 12 and between 14 and 18, most preferred 3, 4, 5, 9, 10, 11, 15, 16 or 17.
  • Such biosurfactants are typically produced using bacteria of the species Pseudozyma or Ustilago.
  • Mannosylerythritol lipids have previously been described as used in cleaning compositions.
  • WO 2018/197623 A1 WO 2015/091250 A1 and WO 2018/191174 A1 describe compositions comprising biosurfactants useful for cleaning hard and/or soft surfaces.
  • EP 3 290 020 A1 and US 2010/168405 A relate to the use of mannosylerythritol lipids in medicinal or cosmetic compositions, while WO 2016/066464 A1 , EP 3 341 458 A1 , EP 3 290 500 A1 , DE 10 2015 217 506 A1 and DE 10 2014 225 184 A1 refer to mannosylerythritol lipid containing detergents, particularly laundry detergents.
  • Mannosylerythritol lipids may also be used as thickeners or corrosion inhibitors, as disclosed in WO 2018/167285 A1 and EP 2 872 480 A1 , or WO 2018/095975 A1 , respectively.
  • the rinse aid composition according to the present invention is defined as being free of a specific component, "free" in this context means that, despite efforts taken to avoid the presence of said component in the rinse aid composition, a total amount of not more than 10 ppm, preferably not more than 5 ppm, more preferred not more than 2 ppm of said component may be present in the rinse aid composition according to the present invention. Most preferred the inventive rinse aid composition contains less than 1 ppm, or 0 ppm of any undesired components.
  • the rinse aid composition according to the present invention comprises at least one biosurfactant selected from the group of mannosylerythritol lipids.
  • Said biosurfactant(s) may be of any of the subtypes MEL-A to MEL-D as defined in Formula (I) above or a mixture of mannosylerythritol lipids of said subtypes.
  • This means that of the two hydroxy groups present in the at least one biosurfactant, 0 to 2 may be acetylated and n may be an integer having value between 1 and 24, preferably between 2 and 18, more preferred between 4 and 12 and between 14 and 18, most preferred 3, 4, 5, 9, 10, 11, 15, 16 or 17.
  • the above-defined biosurfactant(s) may be present in the rinse aid composition in a total amount of from 1 to 15 wt.-%, preferably from 3 to 12 wt.-%, more preferred from 5 to 10 wt.-%, based on the total weight of the rinse aid composition.
  • the rinse aid composition may preferably additionally comprise at least one further nonionic surfactant different from mannosylerythritol lipids.
  • Preferred nonionic surfactants different from mannosylerythritol lipids are alkoxylated fatty alcohols, alkoxylated fatty acids or combinations thereof.
  • the relative hydrophilic alkoxy-chain may comprise or essentially consist of ethylene oxide, propylene oxide or butylene oxide or combinations thereof.
  • the length of this alkoxy-chain can vary between averagely 1 and averagely 200 (total) ethylene oxide-, propylene oxide- or butylene oxide-groups or combinations thereof, including 4, 6, 8, 10, 13, 15, 20, 25, 30, 40, 50, 80, 100 and the ranges between the particularly mentioned.
  • the relative hydrophobic hydrocarbon-chain from the fatty alcohol or fatty acid can be saturated, monounsaturated or poly-unsaturated and linear or branched.
  • the length of this hydrocarbon-chain may vary between 4 and 30 carbon molecules, including 6, 8, 10, 11, 12, 14, 16, 18, 20, 5 22, 24, 26 or 28.
  • Preferred surfactants of this type may be represented by the formula R 1 O(CH 2 CH 2 O) x (CH(CH 3 )CH z O) y H, wherein R 1 is a linear or branched, saturated or unsaturated hydrocarbon residue having 4 to 30 C atoms, preferably 6 to 26, even more preferred 10 to 24 carbon atoms, x preferably is an integer of from 8 to 200, preferably from 20 or from 25 to 200, y preferably is an integer of at most 100 and x+y is preferably below 200.
  • alcohol ethoxylates that can be prepared by ethoxylation of a fatty chain alcohol.
  • the preferred alcohol ethoxylates have a hydrocarbon-chain that ranges from 4 up to 26 carbon atoms, including 4, 6, 8, 10, 12, 14, 16, 18, 20, 22 and between averagely 1 and averagely 200 ethylene oxide-groups, including averagely 4, 6, 20 8, 10, 13, 15, 20, 25, 30, 40, 50, 80, 100 ethylene oxide-groups.
  • fatty acid ethoxylates that can be prepared by a reaction of fatty acid with ethylene oxide or a polyglycol with the general formula RCOO-(CH 2 CH 2 O) n H.
  • the preferred fatty acid has a hydrocarbon-chain R that varies from 4 up to 26 carbon molecules, including 4, 6, 8, 10, 12, 14, 16, 18, 20, 22.
  • the number of ethylene oxide-groups in the fatty acid ethoxylate is between averagely 1 and averagely 200 ethylene oxide-groups, including averagely 4, 6, 8, 10, 13, 15, 20, 25, 30, 40, 50, 80, 100 ethylene oxide-groups.
  • additional nonionic surfactants may be any nonionic surfactant known in the art with the exception sorbitan esters, i.e. mono-, di- or triesters of sorbitol and fatty acids, which the composition is free of. If present, additional nonionic surfactants are most preferably selected from ethoxylated alcohols.
  • Ethoxylated alcohols may be selected from the group of C 8 -C 20 ethoxylated alcohols, preferably from the group of C 8 -C 10 and C 16 -C 18 ethoxylated alcohols.
  • mixtures of ethoxylated alcohols comprise for example those sold under the trade names of Plurafac ® and Emulan ® by BASF.
  • nonionic surfactants may be present in the rinse aid composition in a total amount of from 0.1 to 10 wt.-%, preferably from 0.3 to 6 wt.-%, more preferred from 0.5 to 4 wt.-%, most preferred from 0.7 to 2 wt.-% based on the total weight of the rinse aid composition.
  • the ratio of the total amount of biosurfactant(s) to the total amount of other nonionic surfactant(s) may be between 20:1 and 1:1, preferably between 10:1 and 3:1, more preferred between 8:1 and 5:1.
  • the rinse aid composition according to the present invention highly preferred comprises an acidic component and preferably has an acidic pH value, i.e. the pH of the rinse aid composition is preferably below 7.
  • An acidic pH value is beneficial in order to avoid precipitation of magnesium and/or calcium hydroxides from the rinsing liquor. If precipitated, these salts would then become deposited in form of a cloudy or milky film on the washed dishware, which is considered as an improper cleaning result by the consumer.
  • Such an acidic component may be an organic or inorganic, mono- or polyprotic acid, and/or an anionic surfactant containing phosphoric acid mono- and/or diester groups.
  • Organic or inorganic acids may be selected from any water-soluble organic or inorganic acids, preferably selected from the group consisting of phosphoric acid, sulfuric acid, hydrochloric acid, boric acid, lactic acid, citric acid, formic acid, acetic acid, glycolic acid, succinic acid, adipic acid, malic acid, maleic acid, gluconic acid and tartaric acid.
  • Anionic surfactants containing phosphoric acid mono- and/or diester groups are preferably selected from ethoxylated alkyl phosphates and/or ethoxylated alkyl aryl phosphates.
  • Preferred alkyl phosphates and alkyl ether phosphates can be prepared by treating fatty alcohols or (fatty) alcohol ethoxylates with a phosphorylating agent which yields in a mixture of mono- and di-esters of phosphoric acid.
  • the acidic component is selected from phosphoric acid and/or ethoxylated alkyl phosphates and such phosphates are preferably selected from C 8 -C 20 ethoxylated alkyl phosphates, more preferred C 8 -C 16 ethoxylated alkyl phosphates, even more preferred C 8 -C 14 ethoxylated alkyl phosphates, most preferred C 8 -C 10 ethoxylated alkyl phosphates, wherein preferably ethoxylated alkyl phosphates contain 3 to 10 ethylene oxide repeating units (EO), more preferred 4 to 8 EO, even more preferred 4 to 6 EO and most preferred 5 EO.
  • EO ethylene oxide repeating units
  • anionic surfactants are commercially available, for example under the trade name of Servoxyl ® by KLK OLEO.
  • Acidic components as defined above may be present in the rinse aid composition in a total amount of from 0.1 to 10 wt.-%, preferably from 0.5 to 5 wt.-%, more preferred from 1 to 3 wt.-%, based on the total weight of the rinse aid composition.
  • the rinse aid composition according to the present invention is a liquid rinse aid composition. It may therefore comprise 50 to 98 wt.-%, preferably 75 to 95 wt.-%, more preferred 80 to 90 wt.-%, based on the total weight of the rinse aid composition, of a solvent or a mixture of solvents.
  • the solvent or mixture of solvents may comprise one or more solvents selected from water, ethanol, 2-propanol and/or glycerol and preferably comprises water.
  • the rinse aid composition according to the present invention is free of enzymes cleaving such bonds.
  • Free in this context means that, despite efforts taken to avoid the presence of enzymes in the rinse aid composition, a total amount of not more than 1 ppm of ester or ether cleaving enzymes may be present in the rinse aid composition according to the present invention.
  • the rinse aid composition according to the present invention may additionally to the above-mentioned components comprise any ingredients known by a skilled person useful in a rinse aid composition.
  • Such components may for example be complexing or sequestering agents, salts or corrosion inhibitors.
  • Preferred salts are water-soluble salts of magnesium, zinc and/or bismuth, as these ions are able to suppress glass corrosion occurring from excess chelating agents, which may present in the rinsing liquor for example due to low water hardness of the used rinsing water.
  • the rinse aid composition contains a mixture of: biosurfactants selected from mannosylerythritol lipids, ethoxylated fatty alcohols, in particular those selected from C 8 -C 10 and C 16 -C 18 ethoxylated fatty alcohols, acidic components, in particular those selected from C 8 -C 10 ethoxylated alkyl phosphates and phosphoric acid and water.
  • biosurfactants selected from mannosylerythritol lipids, ethoxylated fatty alcohols, in particular those selected from C 8 -C 10 and C 16 -C 18 ethoxylated fatty alcohols, acidic components, in particular those selected from C 8 -C 10 ethoxylated alkyl phosphates and phosphoric acid and water.
  • the rinse aid composition consists of these components.
  • the inventive rinse aid composition may have a pH value of from 1.5 to 4, preferably from 2 to 3. It may have a density from 1.00 to 1.30, preferably 1.00 to 1.15, more preferably 1.00 to 1.05.
  • All tested rinse aid compositions contained 7.5 wt-% of the respective biosurfactant, 1 wt.-% of nonionic surfactant C 16 -C 18 alcohols, ethoxylated, 1.9 wt.-% of acidic components (C 8 -C 10 ethoxylated fatty alcohol phosphates) and ad 100 wt.-% water and had an acidic pH value.
  • Biosurfactants tested were two rhamnolipid-based biosurfactants, namely Raphynal V1 200 (abbreviated as RL 1), and a mixture of approx. 65 to70 % diramnolipids and approx. 15 to 20 % mono-ramnolipids (abbreviated as RL 2), one sophorolipid-based biosurfactant, namely Rewoferm ® SL One (ex Evonik) (abbreviated as RL 3) and mannosylerythritol lipids as described herein (a mixture of lipids having in formula (I) values for n of 4, 10 and 16; inventive example, abbreviated as MEL).
  • RL 1 200 abbreviated as Raphynal V1 200
  • RL 2 a mixture of approx. 65 to70 % diramnolipids and approx. 15 to 20 % mono-ramnolipids
  • RL 3 sophorolipid-based biosurfactant
  • MEL mannos
  • Dishes were washed in a Miele GSL-2 dishwasher over 6 cycles in the standard program at 50 °C (rinsing time 8 minutes). The water hardness was 9 °GH.
  • Dishes were checked for droplets and spotting after 4, 5 and 6 cycles, respectively.
  • the number of droplets were determined 30 minutes after finishing the respective number of cycles, while spotting was determined 3 hours after finishing the respective number of cycles, both by visual inspection of an experienced person.
  • Drying performance was rated on a scale of 0 to 10, wherein 0 stands for no droplets remaining on the respective dishes and wherein 10 stands for a high number of droplets.
  • Results are shown in Figures 1 and 2 .
  • the values are given as average values over 4, 5 and 6 cycles for all dishes of the same respective material and as average values for all dishes over 4, 5 and 6 cycles (right column).
  • an inventive rinse aid composition comprising mannosylerythritol lipids as biosurfactants shows better average drying and spotting performance over all tested dishes than rinse aids containing other biosurfactants.

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  • Engineering & Computer Science (AREA)
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EP20185460.1A 2020-07-13 2020-07-13 Mannosylerythritol-lipid mit flüssigen spülhilfsmitteln Pending EP3940049A1 (de)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114736741A (zh) * 2022-02-28 2022-07-12 温柱 一种环保型高浓缩洗衣液及其制备方法
WO2024188924A1 (en) * 2023-03-16 2024-09-19 Evonik Operations Gmbh Biosurfactants on area-measured plastic articles

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EP3290500A1 (de) 2016-08-29 2018-03-07 Richli, Remo Wasch-, pflege- und reinigungsmittel mit polyoxyalkylen carboxylat
EP3290020A1 (de) 2016-08-29 2018-03-07 Richli, Remo Milde zubereitungen mit alkoxylierten fettsäureamiden
EP3290501A1 (de) * 2016-08-29 2018-03-07 Richli, Remo Wasch- und reinigungsmittel mit alkoxylierten fettsäureamiden
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WO2018191174A1 (en) 2017-04-09 2018-10-18 Locus Ip Company, Llc Materials and methods for maintaining industrial, mechanical and restaurant equipment
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114736741A (zh) * 2022-02-28 2022-07-12 温柱 一种环保型高浓缩洗衣液及其制备方法
WO2024188924A1 (en) * 2023-03-16 2024-09-19 Evonik Operations Gmbh Biosurfactants on area-measured plastic articles

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