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EP0087233B1 - Verfahren zur Herstellung von schwach schäumenden Detergenszusammensetzungen - Google Patents

Verfahren zur Herstellung von schwach schäumenden Detergenszusammensetzungen Download PDF

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Publication number
EP0087233B1
EP0087233B1 EP83300540A EP83300540A EP0087233B1 EP 0087233 B1 EP0087233 B1 EP 0087233B1 EP 83300540 A EP83300540 A EP 83300540A EP 83300540 A EP83300540 A EP 83300540A EP 0087233 B1 EP0087233 B1 EP 0087233B1
Authority
EP
European Patent Office
Prior art keywords
suds
suppressant
process according
dialkylamide
alkane
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.)
Expired
Application number
EP83300540A
Other languages
English (en)
French (fr)
Other versions
EP0087233A1 (de
Inventor
Malcolm Nigel Alan Carter
Peter Robert Garrett
Dennis Giles
Appaya Raghunath Naik
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.)
Unilever PLC
Unilever NV
Original Assignee
Unilever PLC
Unilever NV
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 Unilever PLC, Unilever NV filed Critical Unilever PLC
Priority to AT83300540T priority Critical patent/ATE23560T1/de
Publication of EP0087233A1 publication Critical patent/EP0087233A1/de
Application granted granted Critical
Publication of EP0087233B1 publication Critical patent/EP0087233B1/de
Expired 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/382—Vegetable products, e.g. soya meal, wood flour, sawdust
    • 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
    • C11D3/18—Hydrocarbons
    • 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
    • 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
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/384—Animal products

Definitions

  • This invention relates to a process for producing low-sudsing detergent compositions, and to the compositions produced.
  • Low-sudsing detergent compositions are increasing in popularity as the number of front-loading, drum-type washing machines increases, and are now widespread. They are generally in spray-dried, particulate form, although liquids are now being introduced, and are formulated with a high sudsing detergent system together with a suds-suppressant.
  • the high sudsing detergent system is usually either an anionic detergent-active compound alone, or a combination of an anionic and a nonionic detergent-active compound.
  • the suds-suppressant component can be selected from a wide variety of types, examples being alkyl phosphoric acid esters and their salts, hydrocarbons such as petroleum jelly and waxes, silicone oils and hydrophobed silicas, and mixtures thereof.
  • the present invention provides a process for the manufacture of a low-sudsing detergent composition which comprises forming an essentially spray-dried detergent composition and adding a suds-suppressant to it by spraying, the suds-suppressant comprising an intimate mixture of an oily or waxy substance and an a,w-dialkylamide alkane having the structure: where n is the integer 1 or 2.
  • the selected a,w-dialkylamide alkanes are ⁇ , ⁇ •distearamide methane and a,w-distearamide ethane, (commonly known as methylene and ethylene distearamides, respectively).
  • oily substances are mineral, vegetable or animal oils, colourless mineral oils being preferred. Either light or heavy mineral oil or mixtures thereof may be employed but, of course, any substance used must be of low volatility at normal fabric-washing temperatures.
  • oils which are suitable are sesame oil, cottonseed oil, corn oil, sweet almond oil, olive oil, wheat germ oil, rice bran oil or peanut oil, or animal oils such as lanolin, neat's foot oil, bone oil, sperm oil or cod liver oil.
  • Preferred waxy materials are of mineral origin, especially those derived from petroleum, including microcrystalline and oxidised microcrystalline petroleum waxes and paraffin waxes.
  • a preferred material is petroleum jelly, (often sold under the trade mark "Vaseline” by Cheseborough-Ponds Limited), desirably one having a drop-melting point of from 20°-120°C, preferably 45-65°C.
  • the term 'drop-melting point' as used herein is used in the sense defined in ASTM designation D127-63.
  • Synthetic waxes, or Montan waxes, or natural waxes such as beeswax, candelilla and carnauba waxes may also be used if desired.
  • waxes described may be used alone or in admixture with other waxes.
  • the suds-suppressant combination may be added to the essentially high sudsing composition in an amount such that it forms from 0.1 to 5%, preferably 0.5 to 3.5% by weight of the final composition.
  • the relative proportions of the a,w-dialkylamide alkane and the oily substance in the suds-suppressant combination are generally from 2.5:97.5 to 9:1, preferably 5:95 to 1:3, the ratios being expressed by weight.
  • the suds-suppressant combination may be mixed with a dispersing agent such as a nonionic surfactant.
  • a dispersing agent such as a nonionic surfactant.
  • Typical nonionic surfactants may for example be either ethoxylated alcohols or sorbitan esters.
  • the relative proportions of dispersing agent to the suds-suppressant combination are generally from 0.2:99.8 to 3:1.
  • the suds-suppressant combination may also be mixed with other antifoam ingredients such as fatty acids and their soaps, alkyl phosphoric acids and their salts with metal ions, and hydrophobed silica.
  • Other antifoam ingredients such as fatty acids and their soaps, alkyl phosphoric acids and their salts with metal ions, and hydrophobed silica.
  • the relative proportion of other ingredients to the a,w-dialkylamide alkanes is from 1:9 to 9:1.
  • compositions prepared by the process of this invention will contain either an anionic, a nonionic, a zwitterionic or a cationic surfactant or a mixture of these.
  • Other components which will normally be present include detergency builders, fabric conditioning agents, bleaching agents, bleach activators, corrosion inhibitors, anti-redeposition agents, fluorescers, stabilisers and a substantial proportion of moisture.
  • Typical anionic surfactants which may be present in amounts of from about 2 to 35% by weight of the finished composition, are sodium alkylbenzene sulphonates, preferably the C 1o -C 14 alkyl compounds, sodium primary and secondary alkyl sulphates, preferably the C, o C 22 alkyl sulphonates, sodium olefine sulphonates, preferably the C 10 ⁇ C 18 sulphonates, sodium alkane sulphonates and sodium alcohol ether sulphates. Soaps of fatty acids may also be present, preferably the sodium and potassium salts of C 10 ⁇ C 22 fatty acids, both saturated and unsaturated.
  • soap is the sole anionic surfactant it may be present in an amount up to about 65% by weight of the finished composition, down to about 12% by weight when other anionic surfactants are present.
  • Typical soaps which can be used are those formed from coconut oil, tallow and natural oils containing high proportions of oleic acids such as sunflower oil.
  • compositions produced by the process of the invention can also contain nonionic surfactants, preferably ethoxylated primary and secondary alcohols of from 8 to 25 carbon atoms containing from 3 to 25 moles of ethylene oxide per mole of alcohol. These materials may be present in an amount of from 1 to 15% by weight, based on the weight of the finished composition.
  • Typical detergency builders which can be used are the water-soluble phosphates, carbonates, percarbonates and aluminosilicates, particularly the sodium and potassium salts of these compounds.
  • Organic builders may also be used, examples being sodium carboxymethylsuccinate, sodium citrate, sodium polyacrylates and sodium nitrilotriacetate. Any of these compounds, or any other builder compound, in any suitable mixture, may be used in amounts of from 5 to 50% by weight of the finished composition.
  • the components of the suds-suppressant must be in intimate mixture prior to spraying on to the essentially high sudsing spray-dried detergent composition, since we have discovered that if the two components are added separately, inferior suds control is produced.
  • the normal method for making powdered detergent compositions is to combine the spray-dried base powder with components such as sodium perborate, sodium sulphate, enzyme compositions and perfume in a dry-dosing step.
  • This step may be performed in accordance with the invention either prior to, simultaneously with, or after the spraying of the essentially high sudsing spray-dried detergent composition with the-intimate mixture of the a,w-dialkylamide alkane and the oily substance.
  • the invention is illustrated by the following example.
  • This Example illustrates the manufacture of a conventional detergent powder where the antifoam mixture is added to the slurry before spray drying, and the manufacture of an otherwise identical detergent powder according to the invention, the antifoam mixture being sprayed on to the base powder after spray drying.
  • the Example also compares the foam control of these two powders.

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

Claims (9)

1. Verfahren zur Herstellung einer wenig schäumenden Detergens-Zusammensetzung, das die Bildung einer im wesentlichen sprühgetrockneten Reinigungsmittelzusammensetzung und die Zugabe eines Schaumunterdrückungsmittels dazu durch Sprayen umfaßt, dadurch gekennzeichnet, daß das Schaumunterdrückungsmittel ein inniges Gemisch einer öligen oder wachsähnlichen Substanz und eines alpha-, omega-Dialkylamid-alkans mit der Struktur:
Figure imgb0007
worin n die ganze Zahl 1 oder 2 ist, umfaßt.
2. Verfahren nach Anspruch 1, worin das alpha-, omega-Dialkylamid-alkan alpha-, omega-Distearylamid-methan ist.
3. Verfahren nach Anspruch 1, worin das alpha-, omega-Dialkylamid-alkan alpha-, omega-Distearylamid-ethan ist.
4. Verfahren nach einem der vorhergehenden Ansprüche, worin die ölige oder wachsähnliche Substanz ein Mineralöl, ein Petroljelly, ein Wachs oder eine Mischung davon umfaßt.
5. Verfahren nach einem der vorhergehenden Ansprüche, worin das Schaumunterdrückungsmittel auf das sprühgetrocknete Pulver in einer solchen Menge aufgesprüht wird, daß es 0,5 bis 3,5 Gew.-% der Zusammensetzung bildet.
6. Verfahren nach einem der vorhergehenden Ansprüche, worin die relativen Gewichtsverhältnisse des alpha-, omega-Dialkylamid-alkans und der öligen Substanz in dem Schaumunterdrückungsmittel von 2,5:97,5 bis 9:1 betragen.
7. Verfahren nach Anspruch 6, worin die relativen Gewichtsverhältnisse 5:95 bis 1:3 betragen.
8. Verfahren nach einem der vorhergehenden Ansprüche, worin das Schaumunterdrückungsmittel ein Dispergiermittel in Form eines nichtionischen oberflächenaktiven Mittels umfaßt.
9. Verfahren nach Anspruch 8, worin die relativen Gewichtsverhältnisse des Dispergiermittels zu dem Schaumunterdrückunvsmittel von 0,2:99,8 bis 3:1 betragen.
EP83300540A 1982-02-04 1983-02-03 Verfahren zur Herstellung von schwach schäumenden Detergenszusammensetzungen Expired EP0087233B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83300540T ATE23560T1 (de) 1982-02-04 1983-02-03 Verfahren zur herstellung von schwach schaeumenden detergenszusammensetzungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8203233 1982-02-04
GB8203233 1982-02-04

Publications (2)

Publication Number Publication Date
EP0087233A1 EP0087233A1 (de) 1983-08-31
EP0087233B1 true EP0087233B1 (de) 1986-11-12

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Family Applications (1)

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EP (1) EP0087233B1 (de)
AT (1) ATE23560T1 (de)
DE (1) DE3367617D1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8310648D0 (en) * 1983-04-20 1983-05-25 Unilever Plc Low sudsing liquid detergent compositions
GB8627181D0 (en) * 1986-11-13 1986-12-10 Procter & Gamble Softening detergent compositions
DE3732947A1 (de) * 1987-09-30 1989-04-13 Henkel Kgaa Zur verwendung in wasch- und reinigungsmitteln geeignetes schaumregulierungsmittel
US6200498B1 (en) 1997-08-29 2001-03-13 Henkel Kommanditgesellschaft Auf Aktien Process for producing paraffin-containing foam regulators

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2043086A1 (de) * 1970-08-31 1972-03-30 Henkel & Cie GmbH, 4000 Dusseldorf Schwachschaumendes Wasch , Reimgungs und Enthartungsmittel
DE2043087A1 (de) * 1970-08-31 1972-03-02 Henkel & Cie GmbH, 4000 Dusseldorf Schwachschaumendes Wasch , Reimgungs und Enthartungsmittel
DE2043088A1 (de) * 1970-08-31 1972-03-02 Henkel & Cie GmbH, 4000 Dusseldorf Schwachschaumendes Wasch , Reimgungs und Enthartungsmittel
EP0021830B1 (de) * 1979-06-27 1983-06-15 Unilever Plc Schwach schäumende Reinigungsmittelzusammensetzungen
US4363740A (en) * 1980-07-29 1982-12-14 Lever Brothers Company Process for making controlled sudsing detergent powder

Also Published As

Publication number Publication date
ATE23560T1 (de) 1986-11-15
EP0087233A1 (de) 1983-08-31
DE3367617D1 (en) 1987-01-02

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