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
  • 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
  • C11D17/0026—Structured liquid compositions, e.g. liquid crystalline phases or network containing non-Newtonian phase
• • 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
  • C11D3/0005—Other compounding ingredients characterised by their effect
  • C11D3/0026—Low foaming or foam regulating 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
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/32—Amides; Substituted amides

Definitions

• This invention relates to low-sudsing liquid detergent compositions.
• the conventional suds-suppressant for liquid compositions is a hydrocarbon oil or a silicone oil, since these materials are themselves liquid and in theory at least are capable of incorporation into liquid compositions without undue complication.
• a hydrocarbon oil or a silicone oil since these materials are themselves liquid and in theory at least are capable of incorporation into liquid compositions without undue complication.
• suds-suppressants into liquid compositions. For example it has been found that in general silicone oils are deactivated by the alkaline medium of a liquid detergent composition, and need to be protected.
• the present invention provides a low-sudsing liquid detergent composition
• a micellar structured liquid and a suds-suppressant characterised in that the suds-suppressant comprises an intimate mixture of an oily substance and a nitrogen compound of the general formula: where R 1 and R 3 represent aliphatic hydrocarbon residues containing 14-22 carbon atoms, R 2 and R 4 represent hydrogen atoms or aliphatic hydrocarbon residues containing 1-22 carbon atoms, and R represents an aliphatic residue containing 1-9 carbon atoms.
• the second way of making a structured liquid is to use an auxiliary thickener such as a clay or a polymer. Again quite larger amounts of particulate material can be suspended in such liquids, but in our experience their viscosity is more sensitive to changes in formulation.
• micellar structured liquids to the field of fabric washing in automatic washing machines.
• the structured liquids produced or patented by our competitors have generally been part of hard surface cleaning compositions such as scouring cleansers.
• Such compositions are very different from fabric washing compositions in that the detergency required of them is much lower.
• the amount of foam developed is not especially important. In fabric washing compositions, on the other hand, the amount of foam developed is critical, since if the compositions develop large amounts of foam, then they will not be suitable for use in automatic washing machines.
• the invention provides a stable homogeneous aqueous structured micellar liquid detergent composition, containing suspended sodium tripolyphosphate and 6 to 20% by weight of an active detergent mixture comprising:
• Water-soluble anionic sulphonate detergents suitable for use in the compositions of the invention are, for example, the alkali metal salts of C 10 - C 16 alkylbenzene sulphonates, C 10 -C 20 alkane sulphonates, and C 10 -C 20 olefin sulphonates, the alkali metal salts of alkylbenzene sulphonates being preferred, especially those derived from alkylbenzenes having a C 10 -C 14 alkyl chain and average molecular weight of approximately 225-245.
• Water-soluble anionic sulphate detergent are for example primary and secondary alkyl sulphates and alkylether sulphates having an alkyl chain length of about 8 to 20 carbon atoms, preferably 12 to 18 carbon atoms e.g. lauryl sulphate.
• fatty acids having 12 to 22 carbon atoms are oleic acid, ricinoleic acid, and fatty acids derived from castor oil, rapeseed oil, groundnut oil, coconut oil, palmkernel oil or mixtures thereof.
• the sodium or potassium soaps of these acids can be used, the sodium soaps being preferred.
• Suitable nonionic detergents for use in the present invention are fatty acid alkylolamides; alkylene oxide condensates of alkyl phenols or aliphatic alcohols, alkylamines, fatty acid alkylolamides and amine oxides. Ethylene oxide condensates of alkyl phenols or aliphatic alcohols are preferred.
• Particularly suitable ethylene oxide condensates such as C 12 -C 15 alcohols condensed with 6-8 moles of ethylene oxide per mole of alcohol have hydrophilicli- pophilic balance (HLB) values of between 11 and 15.
• HLB hydrophilicli- pophilic balance
• the compositions of the invention have a viscosity of from 0.3 to 1.5 Pa.s measured at 20°C and at a shear rate of 21 seconds-1; a sodium tripolyphosphate content of 8 to 30% by weight and an active detergent mixture content of 8 to 20% by weight.
• the suds generated by the liquid composition was at a controlled level, even after prolonged storage of the liquid.
• the ingredients are preferably mixed in the following manner.
• the required quantity of water is charged into a suitable mixing vessel provided with a stirrer.
• Sodium tripolyphosphate and sodium metasilicate are then mixed into the water and sodium hydroxide is added with heating to about 60°C.
• the oleic acid is then mixed into the mass and stirring is continued at 60°C to saponify the oleic acid.
• Methylene bis-stearamide and petroleum jelly are then pre-mixed with nonionic surfactant at 60°C and this mix is then added to the main mix with continuous stirring.
• the alkyl benzene sulphonic acid is mixed into the mass.
• the mixture is cooled under constant agitation and water is added, if necessary, to compensate for evaporation loss during the first stages of operation. Thereafter, perfume may be added when the product is at substantially ambient temperature.
• the liquid detergent composition of the invention may further contain any of the adjuncts normally used in fabric washing detergent compositions e.g. sequestering agents such as ethylene-diaminetetraacetate and sodium gluconate; alkali silicates for adjusting the pH; soil suspending and anti-redeposition agents such as sodium carboxymethylcellulose, polyvinyl-pyrrolidone etc; fluorescent agents; perfumes, germicides and colourants.
• adjuncts normally used in fabric washing detergent compositions e.g. sequestering agents such as ethylene-diaminetetraacetate and sodium gluconate
• alkali silicates for adjusting the pH
• soil suspending and anti-redeposition agents such as sodium carboxymethylcellulose, polyvinyl-pyrrolidone etc
• fluorescent agents such as sodium carboxymethylcellulose, polyvinyl-pyrrolidone etc
• perfumes, germicides and colourants e.g.
• suds-suppressants other than those defined; enzymes, particularly proteolytic and amylolytic enzymes, particularly proteolytic and amyolytic enzymes; reducing peroxygen or chlorine bleaches, such as sodium sulphite, sodium perborate and potassium dichlorocyanurate, including bleach activators, such as N,N,N',N'- tetraacetylethylene- diamine, may be necessary or desirable to formulate a complete heavy duty detergent composition suitable for use in washing machine operations.
• bleach activators such as N,N,N',N'- tetraacetylethylene- diamine

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)
• Crystallography & Structural Chemistry (AREA)
• Detergent Compositions (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=10541356

Family Applications (1)

Country Status (6)

Cited By (1)

Citations (2)

• 1983
  • 1983-04-20 GB GB838310648A patent/GB8310648D0/en active Pending
• 1984
  • 1984-04-11 EP EP84200508A patent/EP0126500A1/en not_active Withdrawn
  • 1984-04-13 FI FI841476A patent/FI841476A/fi not_active Application Discontinuation
  • 1984-04-17 GR GR74440A patent/GR81471B/el unknown
  • 1984-04-18 ES ES531790A patent/ES8602925A1/es not_active Expired
  • 1984-04-19 PT PT7845184A patent/PT78451B/pt unknown

Patent Citations (2)

Also Published As

Similar Documents

Legal Events