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
  • C11D1/83—Mixtures of non-ionic with anionic 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
  • C11D10/00—Compositions of detergents, not provided for by one single preceding group
  • C11D10/04—Compositions of detergents, not provided for by one single preceding group based on mixtures of surface-active non-soap compounds and soap
• • 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
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
  • C11D1/143—Sulfonic acid 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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
  • C11D1/146—Sulfuric acid 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
  • C11D1/02—Anionic compounds
  • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
  • C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic 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
  • 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

Definitions

• This invention relates to built liquid detergent compositions. More particularly,.the invention relates to aqueous built liquid detergent compositions with improved storage stability, which are particularly suitable for semi-industrial laundering purposes.
• Aqueous, built liquid detergent compositions for fabric washing are well known. They are often considered to be more convenient to the user than the equivalent dry powdered or particulate products, as they are easier to dose, dissolve more readily, are non-dusting and usually occupy less storage space.
• Such a suspending liquid medium often comprises an aqueous medium comprising an anionic surfactant, a nonionic surfactant and an electrolyte. With such a ternary combination it is possible to produce a liquid medium capable of suspending adequate amounts of such undissolved or less soluble builders. Although the suspending properties of systems of these types may be very good, hitherto it has proven difficult to formulate compositions having also satisfactory wide temperature range stability and viscosity.
• silicates such as e.g. sodium metasilicate, which serve as a source of alkalinity, have a buffering capacity and which inhibit corrosion.
• compositions containing a concentration range of silicate within which products are obtained which are stable over a wide range of storage conditions are stable over a wide range of storage conditions.
• compositions which are stable over a wide range of storage conditions and which comprise considerable levels of detergency builders and alkali metal silicate, can be formulated by using a ternary detergent-active system comprising an anionic synthetic detergent, a soap and a nonionic synthetic detergent, in which the latter is an alkylene oxide condensate of an aliphatic alcohol having less than 15 carbon atoms in its alkyl radical and having a hydrophilic-lipophilic balance of between 11 and 13.
• a ternary detergent-active system comprising an anionic synthetic detergent, a soap and a nonionic synthetic detergent, in which the latter is an alkylene oxide condensate of an aliphatic alcohol having less than 15 carbon atoms in its alkyl radical and having a hydrophilic-lipophilic balance of between 11 and 13.
• compositions of the invention remain stable even after at least six 24-hour cycles.
• the present invention provides a stable built liquid detergent composition which comprises, in an aqueous medium:
• An essential feature of the present invention is the inclusion in the detergent-active surfactant mixture of a nonionic detergent which is an alkylene oxide condensate of an aliphatic alcohol having less than 15 carbon atoms in its alkyl radical and having an HLB of between 11 and 13.
• the nonionic detergent is normally present in an amount of 1.5% to 10%, preferably 2% to 6% by weight of the total composition.
• Suitable nonionic detergents are the condensation products of ethylene oxide, propylene oxide and/or butylene oxide with aliphatic alcohols having less than 15 carbon atoms, preferably between 9 and 13 carbon atoms, C 13 included, and most preferably 12 and 13 carbon atoms.
• the HLB which may vary between 11 and 13, determines, in combination with the alcohol chain length, the suitable number of alkylene oxide units.
• An example of a suitable nonionic is the product sold under the trade-name Dobanol 23-6.5 ex Shell Chem. Ltd (C I2 -C 13 alcohol consensed with 6.5 moles of ethylene oxide).
• the water-soluble anionic sulphate or sulphonate detergent is normally present in an amount of 2% to 22%, preferably 2% to 10% or even 2 to 6% by weight of the total composition.
• the water-soluble anionic sulphonate detergents usable in the composition of the invention are, for example, the alkali metal salts of C 10 -C 16 alkyl benzene sulphonates, C 10 -C 20 alkane sulphonates and C 10 -C 20 olefin sulphonates, the alkali metal salts of alkyl benzene sulphonates being preferred, especially those derived from alkylbenzenes having a C 10 -C 14 alkyl chain length and an average molecular weight of approximately 225-245.
• the water-soluble anionic sulphate detergents usable in the composition of the invention are primary and secondary alkyl sulphates having an alkyl chain length of about 8 to 20 carbon atoms, preferably 12 to 18 carbon atoms, e.g. lauryl sulphate, and alkyl ether sulphates having 1-10 ethylene and/or propylene oxide units and having an alkyl chain length of about 8 to 20 carbon atoms, preferably 12 to 18 carbon atoms.
• the alkali metal fatty acid soaps are normally present in an amount of up to 22%, preferably 2% to 22% and most preferably 2% to 6% by weight of the total composition.
• Suitable soaps are those derived from fatty acids having 12 to 18 carbon atoms, such as oleic acid, ricinoleic acid, and fatty acids derived from castor oil, rapeseed oil, groundnut oil, coconut oil, palm kernel oil or mixtures thereof.
• the sodium or potassium soaps of these acids can be used, the sodium soaps being preferred.
• compositions of the present invention contain 10% to 30%, preferably 10% to 25% by weight of the total composition of a detergency builder.
• suitable detergency builders are the phosphate builders such as the alkali metal salts of tripolyphosphoric acid, pyrophosphoric acid, orthophosphoric acid, hexametaphosphoric acid and mixtures thereof. Sodium tripolyphosphate is preferred.
• Other suitable builders include carbonates, zeolites and organic builders such as citrates, and polycarboxylates such as nitrilotriacetate.
• the silicate may be present in an amount of from 1% to 15%, preferably from 3% to 10% by weight of the total composition.
• suitable silicates are the alkali metal orthosilicates, metasilicates and di- silicates, sodium metasilicate being preferred.
• the liquid detergent composition of the invention may further contain any of the adjuvants normally used in fabric-washing detergent compositions, e.g. sequestering agents such as ethylene-diaminetetraacetate and diethylene tetraamine methylene phosphoric acid; soil- suspending and anti-redeposition agents such as sodium carboxymethylcellulose, polyvinylpyrrolidone and the maleic anhydride/vinylmethylether copolymer; fluorescent agents; hydrotropes; lather boosters; perfumes, germicides and colourants.
• sequestering agents such as ethylene-diaminetetraacetate and diethylene tetraamine methylene phosphoric acid
• soil- suspending and anti-redeposition agents such as sodium carboxymethylcellulose, polyvinylpyrrolidone and the maleic anhydride/vinylmethylether copolymer
• fluorescent agents such as sodium carboxymethylcellulose, polyvinylpyrrolidone and the maleic anhydride/vinylmethylether cop
• lather depressors such as liquid polysiloxane anti-foam compounds; enzymes, particularly proteolytic and amylolytic enzymes; peroxygen or chlorine bleaches, such as sodium sulphite, sodium perborate and potassium dichlorocyanurate, including bleach activators, such as N,N,N',N'-tetraacetyl- ethylene diamine, may be necessary or desirable to -formulate a complete heavy-duty detergent composition .suitable for use in machine washing operations.
• These ingredients can be employed in the liquid detergent compositions of the invention without danger of undue decomposition during storage, especially if a proper protective coating is applied.
• compositions of the present invention normally have viscosities within the range of 0.5 to 3.0 Pas (at 20°C and 20 sec- 1 ), preferably within the range of 0.8-1.5 Pas.
• compositions may be formulated having pH values within the whole alkaline region, but preferred are pH values above 12 or even above 13, such as e.g. from 13.2 to 13.7.
• compositions of Examples 1 to 13 were prepared according to the formulations shown in Table I, all being stable homogeneous and pourable products.
• compositions of Examples 14 and 15 were prepared according to the formulations in Table II, giving stable, (both on storage and cycling) homogenous and pourable products.

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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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Publications (1)

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Citations (2)

• 1983
  • 1983-08-29 EP EP83201235A patent/EP0103926A1/en not_active Withdrawn
  • 1983-09-15 FI FI833290A patent/FI833290L/fi not_active Application Discontinuation
  • 1983-09-15 AU AU19146/83A patent/AU1914683A/en not_active Abandoned
  • 1983-09-16 NO NO833341A patent/NO833341L/no unknown
  • 1983-09-16 GR GR72467A patent/GR79671B/el unknown
  • 1983-09-19 JP JP58172862A patent/JPS5978300A/ja active Granted
  • 1983-09-19 ZA ZA836950A patent/ZA836950B/xx unknown
  • 1983-09-19 ES ES525741A patent/ES525741A0/es active Granted
  • 1983-09-19 PT PT77355A patent/PT77355A/pt unknown

Patent Citations (2)

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