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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/20—Organic compounds containing oxygen
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/201—Monohydric alcohols linear
  • C11D3/2013—Monohydric alcohols linear fatty or with at least 8 carbon atoms in the alkyl chain
• • 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
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2006—Monohydric alcohols
  • C11D3/2017—Monohydric alcohols branched
  • C11D3/202—Monohydric alcohols branched fatty or with at least 8 carbon atoms in the alkyl chain
• • 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
  • C11D3/2003—Alcohols; Phenols
  • C11D3/2041—Dihydric alcohols
  • C11D3/2044—Dihydric alcohols linear
• • 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
  • C11D3/43—Solvents

Definitions

• the present invention relates to liquid detergent compositions as a household cleaning agent.
• Household detergent compositions suitable for cleaning surfaces such as metal, glass ceramic, plastics and linoleum are well known. These compositions are available as liquid or as powder formulations. These compositions are used primarily to cleanse surfaces soiled by soap scum, grease and oil.
• liquid detergent compositions have the advantage that they can be applied in any desired strength directly to the soiled surface.
• Other specific advantages of such compositions are described in GB-A-2184453 which claims liquid cleaner compositions comprising
• compositions falling within the scope of these compositions e.g. hexylene glycol, are either poor cleaners or, as in the case of 2-ethyl-1,3-hexane diol, need substantial quantities of hydrotroping agents to form a homogeneous composition.
• the present invention is a liquid detergent composition
• a liquid detergent composition comprising
• hexylene glycol refers to a branded chain glycol of the formula (CH3)2 C(OH)CH2 CH(OH) CH3
• the surprising feature of the present invention is that the cleaning performance of hexylene glycol when used alone is very poor.
• the combination when combined with the monohydric alcohol, the combination is not only odourless, non-toxic, non-agressive towards acrylics surface and is relatively inexpensive, but the combination also enables reduction of the amount of hydrotroping agents such as sodium cumene sulphonate used in such a detergent composition.
• the aliphatic monohydric alcohol in the mixture suitably has at least 7 carbon atoms, preferably at least 8 carbon atoms.
• the monohydric alcohol may be a simple alcohol such as n-octanol, trimethylpentanol and the like or a monoether of a mono-, di- or polyoxyalkyleneglycol. Particularly preferred are ethers of propanol and polyoxypropylene glycol. Specific examples of such compounds include isobutoxy propanol, n-butoxypropoxypropanol and the like.
• the relative amounts of hexylene glycol and the monohydric alcohol in the solvent mixture is such that the amount of the monohydric alcohol is suitably from 10-50% w/w, preferably from 15-30% w/w of the solvent mixture.
• a typical example is a solvent mixture containing 70-80% w/w of hexylene glycol and 30-20% w/w of n-butoxypropoxypropanol.
• the detergent compositions of the present invention contain from 0.1-10% by weight, preferably from 1-10% by weight of a surfactant.
• a surfactant Any of the well known surfactants can be used in the detergent compositions of the present invention. A typical list of these surfactants can be found in EP 0120591 and in USP 3,663,961.
• water soluble anionic surfactants include the salts of alkyl benzene sulphonates, paraffin sulphonates, alpha-olefin sulphonates, alkyl glyceryl ether sulphonates and 2-acyloxy alkane-1-sulphonate, and beta-alkyloxy alkane sulphonate.
• salts of alkyl sulphates, alkyl polyalkoxy ether sulphates, alpha-sulpho-carboxylates and their esters, fatty acid monoglyceride sulphates and sulphonates and alkyl phenol polyalkoxy ether sulphates may also be used.
• Suitable examples of the above surfactants are the salts of linear straight chain alkyl benzene sulphonates (LAS) having alkyl groups with 8-16 carbon atoms and methyl branched alkyl sulphates having 8-16 carbon atoms which are also effective.
• LAS linear straight chain alkyl benzene sulphonates
• prox commercial surfactant sold by BP Detergents Ltd is preferred.
• anionic detergent compounds suitable for use herein include the sodium alkyl glyceryl ether sulphonates derived from tallow and coconut oil; sodium fatty acid monoglyceride sulphonates and sulphates derived from coconut oil; and sodium or potassium salts of C8-C12 alkyl phenol alkylene oxide ether sulphate containing up to 10 alkylene oxide units per molecule. Mixtures of anionic surfactant may also be used.
• the nonionic surfactants which may be used in the present invention are condensates of an alkylene oxide e.g. ethylene oxide with a hydrophobic group to form a surfactant having an appropriate hydrophilic-lipophilic balance (HLB) in the range from 8 to 17, suitably from 9.5 to 13.5, preferably from 10 to 12.5.
• HLB hydrophilic-lipophilic balance
• the hydrophobic group may be an aliphatic or aromatic type and the length of the polyoxyethylene group condensed therewith can be readily adjusted to yield a water-soluble compound having the desired degree of HLB.
• Suitable nonionic surfactants include:
• nonionic surfactants useful for the purposes of the invention include the various grades of Dobanol (Registered Trade Mark, supplied by Shell) Lutensol (Registered Trade Mark, supplied by BASF) and Synperonics (Registered Trade Mark, supplied by ICI).
• nonionic surfactants include the synthetic nonionic detergents available on the market under "Pluronics”(Registered Trade Mark) and supplied by Wyandotte Chemicals Corporation.
• Zwitterionic compounds such as betaines and sulphobetaines, particularly those with a C8-C16 alkyl substituent on the nitrogen atom can also be used as surfactants.
• the detergent compositions in accordance with the present invention contain one or more detergent builder salts which will be well known to those skilled in the art and may comprise from 1-30% of the composition.
• Suitable examples of detergent builder salts useful herein can be of the polyvalent inorganic and polyvalent organic types or mixtures thereof.
• suitable water-soluble, inorganic alkaline detergent builder salts include the alkali metal carbonates, borates, phosphates, pyrophosphates, tripolyphosphates and bicarbonates.
• Suitable organic alkaline detergency builder salts are water-soluble polycarboxylates such as the salts of nitrilotri-acetic acid and citric acid.
• the detergent compositions of the present invention can contain optional ingredients such as hydrotroping agents, chelating agents, suds suppressing agents and the like.
• hydrotroping agent which aids solubilisation and stabilisation of such compositions.
• examples of such agents include primarily the inorganic salts of aromatic sulphonates such as benzene sulphonates, toluene sulphonates, isopropybenzene sulphonates and xylene sulphonates.
• the alkali metal, especially sodium, ammonium and trialkanolammonium salts of these sulphonates are preferred.
• Sodium cumeme sulphonate is most preferred.
• the hydrotroping agent is suitably present in an amount from 0.1 to 15% by weight of the total composition.
• suds suppressing agents can be used to facilitate removal of the surfactant from the treated substrate surface.
• Suds suppressing agents which can be useful in the detergent compositions of the invention are suitable selected from silicone, wax, vegetable and hydrocarbon oil and phosphate ester varieties.
• Suitable silicone suds controlling agents include polydimethylsiloxanes having a molecular weight in the range from 200 to 200,000 and a kinematic viscosity in the range from 20 to 2,000,000 mm2/s (cSt), preferably from 3000 to 30,000 mm2/s (cSt), and mixtures of siloxanes and hydrophobic silanated (e.g.
• trimethylsilanated) silica having a particle size in the range from 10 to 20 millimicrons and a specific surface area above 50 m2/g.
• Suitable waxes include microcrystalline waxes having a melting point in the range from 65°C to 100°C, a molecular weight in the range from 4,000-10,000 and a penetration value of at least 6, measured at 77°C by ASTM-D1321 and also paraffin waxes, synthetic waxes and natural waxes.
• Suitable phosphate esters include mono- and/or di-C16-C22 alkyl or alkenyl phosphate esters, and the corresponding mono- and/or di alkyl or alkenyl ether phosphates containing up to 6 ethoxy groups per molecule.
• the suds suppressing agent if used, is suitably present in an amount from 0.01-1% by weight of the total composition.
• the detergent compositions of the present invention are particularly suitable for use as hard surface cleaning compositions e.g. for baths.
• these compositions were subjected to simulated bath tub soil cleaning tests according to the method described in GB-A-2184453. In these tests the compositions of the present invention were found to be as good as if not better than conventional detergent formulations.
• a Sheen Wet Abrasion Scrub Tester Model 902 HD a device for mechanically passing a sponge across a flat surface in a uniform and reproducible manner, was used for soil removal testing.
• a sponge was moistened with water to a weight of 25 grams and 1.0 grams of product was added; a weight (1300g) was added to the sponge carriage.
• the porcelain plates were cleaned with each product being tested to about 99% clean by visual observation.
• the strokes needed to reach this level of cleaning were recorded.
• the number of strokes needed were entered into the following formula to determine the cleaning index: wherein the value for reference sample is assumed to be 100.

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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)
• Health & Medical Sciences (AREA)
• Emergency Medicine (AREA)
• Detergent Compositions (AREA)

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Cited By (10)

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Citations (7)

Family Cites Families (1)

• 1988
  • 1988-03-08 GB GB888805448A patent/GB8805448D0/en active Pending
• 1989
  • 1989-03-07 WO PCT/GB1989/000227 patent/WO1989008697A1/fr unknown
  • 1989-03-07 EP EP89200881A patent/EP0334463A1/fr not_active Withdrawn

Patent Citations (7)

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