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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/28—Sulfonation products derived from fatty acids or their derivatives, e.g. esters, amides
• • 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
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/123—Sulfonic acids or sulfuric acid esters; Salts thereof derived from carboxylic acids, e.g. sulfosuccinates

Definitions

• This invention relates to hard surface cleaning and compositions therefor.
• washing compositions which are aggressive to fats and other foodstuffs.
• Such compositions are inevitably also aggressive towards human skin, and it is desirable that they should be made milder in their effect on human skin whilst maintaining a good washing performance.
• the compounds are preferably a mixture of at least four homologues in which the group R comprises an alkyl group having an average of 13 carbon atoms.
• the invention comprises the use of salts of compound [I] as skin protecting agents when cleaning hard surfaces.
• the invention also comprises a process of cleaning hard surfaces wherein the surface is contacted with a cleaning agent comprising a skin protecting amount of a salt of compound [I].
• the invention also comprises an aqueous composition, suitable on dilution with water for hard surface cleaning applications, comprising a salt of compound [I], a monobasic anionic surfactant [II] , and preferably a non ionic surfactant and/or an amphoteric surfactant, the mole ratio of [II] to [I] being from 5 to 50:1 and preferably 10 to 20:1.
• the above composition may also comprise a foam booster, and a hydrotrope.
• the composition may comprise a thickener for example guar gum, an anti-bacterial agent for example glutaraldehyde, an anti-tarnish agent for example benzoxytriazole, a heavy metal chelating agent for example sodium ethylene diamine tetra acetate or sodium ethylene diamine tetra (methylene phosphonate), an opacifier for example ethylene distearate, a perfume, a dye and/or other skin-protecting agents.
• a thickener for example guar gum
• an anti-bacterial agent for example glutaraldehyde
• an anti-tarnish agent for example benzoxytriazole
• a heavy metal chelating agent for example sodium ethylene diamine tetra acetate or sodium ethylene diamine tetra (methylene phosphonate)
• an opacifier for example ethylene distearate
• a perfume a dye and/or other skin-protecting agents.
• Compounds of formula [I] are preferably present as anionic species in an amount of 0.5 to 15% by weight and more preferably 1 to 5% by weight of the said composition.
• Anionic surfactants [II] are preferably present in an amount of 5 to 50% by weight and more preferably 20 to 40% by weight of the said composition and suitably comprise at least one of the following components;
• the weight ratio of said components i), ii) and iii) to said component iv) is in the ratio of 1:3 to 30:1 and more preferable in the ratio 1:3 to 5:1 and forexample in the ratio of 2:3 to 3:1.
• the non ionic surfactant suitably comprises an ethoxylated alcohol, for example a C8 to C16 and preferably a C9 to C11 alcohol.
• the average degree of ethoxylation is suitably from 3 to 12 and preferably from 5 to 10 moles of ethylene oxide residues per mole of non ionic surfactant.
• Said ethoxylated alcohol is preferably present in an amount of 1 to 30% by weight and more preferably 2 to 10% by weight of the said composition.
• Free alcohol corresponding to that of the said non ionic surfactant may be present in an amount 0.01 to 5% by weight of the ethoxylated alcohol.
• the amphoteric surfactant may comprise a betaine and/or an alkyl betaine for example dodecyldimethyl betaine, dodecylamidopropyldimethyl betaine, tetradecyldimethyl betaine, and/or docosyldimethylammonium hexanoate and may be present in an amount of 0.1 to 15% by weight and preferably 1 to 6% by weight of the said composition.
• the foam booster may comprise any of an alkanolamide, an ethoxylated alkanolamide and an amine oxide and may be present in an amount of 1 to 12% by weight and preferably 2 to 6% by weight of the said composition.
• Examples of preferred alkanolamides are coconut alkyl monoethanolamide, coconut alkyl diethanolamides and/or coconut alkyl mono and di isopropanolamides.
• Examples of preferred ethoxylated alkanolamides are coconut alkyl amide condensed with an average of 6 moles of ethylene oxide, lauryl amide condensed with an average of 8 moles of ethylene oxide, and/or myristyl amide condensed with an average of 10 moles of ethylene oxide.
• amine oxides are those comprising a C8 to C16 alkyl group for example dimethyl C13_15 alkylamine oxide, diethyl decylamine oxide, and/or bis-(2-hydroxyethyl) dodecylamine oxide.
• the hydrotrope may be a C1 to C3 alkanol, urea or a lower alkyl benzene sulphonate for example toluene, xylene, and/or cumene sulphonate but is preferably ethanol and may be present in an amount of 0.1 to 15% and preferably 2 to 8% by weight of the said composition.
• the said composition preferably has a pH of 6 to 8 and more preferably of 6 to 7.
• Counterions of the anionic substances may comprise alkali metal ions especially sodium or potassium ions, alkaline earth metal ions especially calcium or magnesium ions, alkanol ammonium ions for example mono, di, and triethanol ammonium, and/or ammonium ions.
• Said counterions most preferably comprise alkaline earth metal ions especially calcium or magnesium ions present in an amount exceeding 0.8M moles and preferably exceeding 1.0M moles where M is the number of moles of component i) of the anionic surfactant [II].
• the balance of the said composition comprises water to 100%.
• the composition may be used in a concentration of 0.0025 to 0.05% and preferably 0.004 to 0.025% by weight of its components excluding water and hydrotropes based on the weight of water used in hard surface washing.
• Temperatures of 30 to 50°C may be used during the washing process.
• compositions of the invention were prepared for use in the dish washing test of example 2 and the skin irritation test of example 3.
• Composition (B) was similar to that of Composition (A), differing only in that the components i) and vi) were replaced with further salts of anionic substances (components ii) and iv)).
• Composition (C) was similar to that of Composition (A), differing only in that the betaine (component vi)) was replaced with a salt of an anionic substance (component iv)).
• a commercially available composition was obtained for use in the skin irritation test of example 3.
• compositions (A) and (C) and comparative compositions (B) and (D) comprised the following components; COMPONENT % BY WEIGHT OF THE TOTAL COMPOSITION Composition (A) (B) (C) (D) a i) Disodium salt of compound (I) X′OCOCH2CH(CO2X ⁇ )SO3H 2.35 0.00 2.35 0.00 b ii) Sodium salt of C11 to C13 linear alkyl benzene sulphonate 7.0 8.85 7.0 7.0 c iii) Sodium salt of C14 to C16 linear alkyl sulphonate 13.0 13.0 13.0 0.0 d iv) Sodium salt of C9 to C15 alkyl ether sulphate 13.0 15.0 14.5 26.0 e v) C9 to C11 ethoxylated alcohol 4.0 4.0 4.0 ⁇ 8.0 vi) Dodecyl dimethylbetaine 1.5 0.0 0.0 1.5 vii) Coconut diethanolamide 4.0 4.0
• alkyl chain is a mixture of C11 to C13 alkyl groups, and the average alkyl chain length is about C12.
• c Where the alkyl chain is a mixture of C14 to C16 alkyl groups, and the average alkyl chain length is about C 15.3 .
• d Where the alkyl chain is a mixture of C9 to C15 alkyl groups, and the average alkyl chain length is about C 13.3 , and the average degree of ethoxylation is 3.
• the alkyl chain is a mixture of C9 to C11 alkyl groups, and the average alkyl chain length is about C 9.7 , and the average degree of ethoxylation is 8.
• the dishwashing performance of each composition was assessed in a soft water solution (50ppm hardness) and in a hard water solution (340ppm hardness). The performance of the said compositions in each solution was assessed using a smaller amount of composition (0.225g) and a larger amount of composition (0.3375g). Thus four dishwashing tests for each composition were performed in total (TABLE 1)
• Uniformly soiled plates were prepared by depositing 2 millilitres (ml) of melted lard in drops over the glazed white porcelain plate (diameter 235mm), and then allowing the plates to stand at room temperature for at least 4 hours before washing in the dishwashing test solution. * The quantity of composition and the hardness of water used for each test are recorded in TABLE 1.
• the dishwashing test solutions were prepared by allowing 4 litres of water of fixed hardness* to flow under gravity from a container with a calibrated orifice (8mm inside diameter) into an enamel basin (10 litres capacity) containing 1 litre of water of substantially the same hardness and a fixed amount* of the composition under assessment.
• the head of the 4 litres of water was 10.5cm above the calibrated orifice.
• the initial temperature of the 5 litres of test solution was 50°C, and the final temperature of the test solution is recorded in TABLE 2.
• the vertical distance from the orifice to the bottom of the basin was about 75cm.
• the plates were washed individually in a uniform manner which comprised;
• the skin irritation index of each composition was determined according to the method of "Association Pharmaceutique Belge" as described in the 21 February 1982 issue of "Journal Officiel de la linen Francaise”.
• composition was tested on 6 albino rabbits, each having both its sides shaved to reveal an area 14x14 cm on each side.
• the skin on the left hand side was left unbroken and the skin on the right hand side was scarified, without causing blood loss, on three parallel lines, each 2.5 cm in length and spaced 0.5 cm apart.
• a 20%v/v solution of each composition in distilled water was prepared.
• a quantity of 0.5 millilitres of the composition to be tested was applied to each side of the 6 rabbits and covered with gauze which was held in place by tape. The gauze was removed 24 hours after the application of the solution. Data was recorded after 24 hours, 48 hours and 72 hours from which was determined the primary skin irritation index.

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• Chemical & Material Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Detergent Compositions (AREA)

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Citations (4)

• 1989
  • 1989-05-05 GB GB898910373A patent/GB8910373D0/en active Pending
• 1990
  • 1990-04-26 EP EP19900304582 patent/EP0396340A3/de not_active Withdrawn
  • 1990-05-04 NO NO90901983A patent/NO901983L/no unknown
  • 1990-05-04 PT PT93955A patent/PT93955A/pt not_active Application Discontinuation

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