EP0057611A2 - Poudres de savon et procédé pour leur préparation - Google Patents

Poudres de savon et procédé pour leur préparation Download PDF

Info

Publication number
EP0057611A2
EP0057611A2 EP82300529A EP82300529A EP0057611A2 EP 0057611 A2 EP0057611 A2 EP 0057611A2 EP 82300529 A EP82300529 A EP 82300529A EP 82300529 A EP82300529 A EP 82300529A EP 0057611 A2 EP0057611 A2 EP 0057611A2
Authority
EP
European Patent Office
Prior art keywords
spray
particles
soap
water
dried
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.)
Ceased
Application number
EP82300529A
Other languages
German (de)
English (en)
Other versions
EP0057611A3 (fr
Inventor
Elfed Huw Evans
John Cyril Rees
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
Publication of EP0057611A2 publication Critical patent/EP0057611A2/fr
Publication of EP0057611A3 publication Critical patent/EP0057611A3/fr
Ceased legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D11/00Special methods for preparing compositions containing mixtures of detergents
    • C11D11/02Preparation in the form of powder by spray drying
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0039Coated compositions or coated components in the compositions, (micro)capsules

Definitions

  • This invention relates to soap powders and to a process for preparing them.
  • the present invention provides spray-dried particles comprising a major proportion of water-soluble soap and having an average diameter of 300-700 microns coated with particles of an inorganic substance, characterised in that the inorganic substance is water-soluble and that at least 80% by weight of its particles have an average diameter of less than 100 microns.
  • United States Patent No 2,592,535 also discloses the coating of soap with hygroscopic salts, such as phosphates, to reduce loss of moisture from spray-dried soap particles and consequently to reduce dusting.
  • hygroscopic salts such as phosphates
  • British Patent Nos 1,401,726 and 1,463,978 relate to particles containing major proportions of soaps and lime-so 3 p dispersants such as ether sulphates. It was apparently found that the lime-soap dispersants adversely affected the solubility properties of the soap particles and it was proposed to counteract that by impregnating them with smectite clay particles having a size below 50 microns. However such particles are not water-soluble and so will remain in suspension in the wash liquor, which may not be desirable.
  • the average diameter of the soap particles can vary from 300-700 microns, preferably 500-600 microns, in which case the average diameter of the inorganic particles is such that at least 80% by weight of them are less than 100 microns, preferably less than 50 microns.
  • the ratio of the diameter of the soap particles to that of the coating particles is preferably from 6:1 to 8:1, most preferably 7:1.
  • the spray-dried soap-containing particles need not consist entirely of soap, but may contain up to 49% by weight of other soap powder components.
  • these are detergency builders, foam boosters or foam suppressants, powder structurants, anti-oxidants, softening agents and water.
  • the particles comprise from 60-80% by weight of soap.
  • Soap powders are either produced by spray-drying in which a relatively cool slurry is sprayed into a hot drying gas, or by spray-cooling, in which hotter slurry is sprayed into relatively cold drying gas, and there are a number of intermediate processes which combine both spray-drying and spray-cooling. All of these processes are included within the term 'spray-dried' as used herein.
  • the term 'coated' is used herein to denote a situation where a plurality of particles of the water-soluble inorganic substance are adherent to the spray-dried soap particles. It does not necessarily imply that so many are adherent that the soap particle is completely coated. It is within the scope of the invention for it to be only partly so.
  • the nature of the water-soluble soap is not critical to the invention. For economic reasons it will normally be a sodium or potassium soap, but any other cation will be satisfactory provided that it is non-toxic and does not cause unwanted side effects in the composition.
  • the fatty acid component of the soap may be derived from mixtures of saturated and partially unsaturated fatty acids in the C S -C 26 chain length region. Coconut oil and tallow, which are the traditional soap-making materials are preferred sources of the mixed fatty acids, the former containing predominantly C12 and Cl4 saturated fatty acids and the latter saturated C 14 and C 18 acids and mono-unsaturated Cl6 acids.
  • the invention is also particularly applicable to soaps formed from fatty acid mixtures containing high proportions of unsaturated acids such as oleic acid and linoleic acid. These soaps tend to be soft and creepy when in spray-dried form and the coating of the invention is especially suitable for improving their powder properties.
  • Sunflower seed oil is an example of an oil which contains fatty acids of this type. When the spray-dried particles contain an unsaturated fatty acid having 16 or more carbon atoms then it is preferred that the content of this acid should be 25% or more by weight of the particle.
  • the soap particles may also contain anionic surfactants in amounts up to 15% by weight of the particle.
  • anionic surfactant is not critical, any of the surfactants conventionally used or proposed for use in fabric washing powders being suitable. Examples of these are sodium alkyl benzene sulphonates, preferably C 10 -C 14 alkyl, sodium primary and secondary alkyl sulphate, preferably C 10 -C 22 alkyl, olefine sulphonate salts and sodium alkane sulphonates.
  • the soap particles may also contain nonionic surfactants in amounts up to about 30% by weight of the particles.
  • Ethoxylated and propoxylated primary and secondary alcohols are the preferred nonionic surfactants, primary alcohols containing 7 to 25 carbon atoms ethoxylated with from 5 to 30 moles of ethylene oxide per mole of alcohol being most preferred.
  • the invention is particularly applicable to spray-dried particles which are soft, and examples of components which may make the particles soft are polyethylene glycols, ethoxylated alkanolamides, alkyl phosphoric acid esters and quaternary ammonium salts.
  • the water-soluble inorganic salt for coating the spray-dried soap particles is preferably present in an amount of from 3 to 25% by weight of the total soap powder formulation.
  • the lower amount is the general level which will normally be used when the salt is only performing a coating function, whereas the upper amount is the maximum amount which will normally be used when the salt performs a function in addition to coating, such as detergency building or bleaching.
  • Suitable salts within which term are included oxides as well as oxyacid salts, are the water-soluble phosphates, carbonates, percarbonates, borates, perborates, sulphates and metasilicates and aluminosilicates, particularly the sodium and potassium salts.
  • certain organic compounds can be used for coating. Examples of such compounds are the salts of nitrilotriacetic acid, preferably sodium nitrilotriacetate, and tetraacetyl ethylene diamine.
  • the invention provides, in a second aspect, a process for the manufacture of spray-dried particles comprising a major proportion of a water-soluble soap inorganic substance, at least 80% of which have an average diameter of less than 100 microns, characterised by forming a mixture of the two types of particle, imparting relative motion to them and spraying them with an aqueous solution of a binder.
  • binder which ensures adhesion between the spray-dried soap particles and the inorganic salt particles is not critical, conventional binders such as water, sodium silicate solution and sodium carboxymethyl cellulose solution being satisfactory.
  • sodium silicate solution 3-10% by weight based on the total soap powder composition, in the form of a 20-60% w/v solution, would be a typical amount of binder to be used.
  • the process of the invention in a number of the conventional granulating apparatus.
  • One such apparatus is the Eirich pan (registered trade mark) which is an inclined pan rotatable about its major axis.
  • Another is the Schugi mixer (registered trade mark) which consists of a cylindrical chamber provided with inclined ribbon-like mixing blades rotatable about the major axis of the cylinder.
  • the coated particles will require drying in a fluidised bed through which warm air is pumped, so since it is necessary to have a fluidised bed apparatus available and since it is possible to carry out the coating process ab initio in a fluidised bed, it is preferred to carry out the process in that way.
  • Spray-dried particles containing a major proportion of soap and having the composition shown below were prepared by conventional slurry-making and spray-drying techniques in two size ranges, 450 and 350 microns. The resultant particles are subsequently referred to as 'core particles'. Parts by Weight
  • a mixture of finely-divided inorganic salts suitable for forming a coating on the above spray-dried particles was then prepared.
  • the composition is shown below
  • the core particles and the mixture of inorganic salts, together with 25 parts of sodium perborate were then placed in an Anhydro (registered trade mark) fluidised bed and sprayed with a 30% w/v aqueous solution of sodium silicate (Na 2 O:SiO 2 , 2:1).
  • the coated particles obtained had good flow properties, a narrow particle size distribution and a bulk density of around 0.4 g/cc.
  • the wetting, dispersion and dissolution properties of the coated particles were then assessed as follows.

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)
  • Detergent Compositions (AREA)
  • Cosmetics (AREA)
EP82300529A 1981-02-04 1982-02-02 Poudres de savon et procédé pour leur préparation Ceased EP0057611A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8103444 1981-02-04
GB8103444 1981-02-04

Publications (2)

Publication Number Publication Date
EP0057611A2 true EP0057611A2 (fr) 1982-08-11
EP0057611A3 EP0057611A3 (fr) 1982-08-25

Family

ID=10519451

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82300529A Ceased EP0057611A3 (fr) 1981-02-04 1982-02-02 Poudres de savon et procédé pour leur préparation

Country Status (9)

Country Link
EP (1) EP0057611A3 (fr)
AR (1) AR225710A1 (fr)
BR (1) BR8200575A (fr)
CA (1) CA1185498A (fr)
ES (1) ES8302082A1 (fr)
GR (1) GR76050B (fr)
NO (1) NO820321L (fr)
PT (1) PT74385B (fr)
ZA (1) ZA82687B (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076137A2 (fr) * 1981-09-29 1983-04-06 Unilever Plc Procédé pour la manufacture de poudre de savon
WO1996014385A1 (fr) * 1994-11-02 1996-05-17 Henkel Kommanditgesellschaft Auf Aktien Preparations solides de substances destinees au lavage de textiles en plusieurs etapes
WO2000037604A1 (fr) * 1998-12-22 2000-06-29 The Procter & Gamble Company Procede de preparation d'une composition detergente granulaire
WO2000053719A1 (fr) * 1999-03-09 2000-09-14 The Procter & Gamble Company Particules de detergent enrobees ou partiellement enrobees de couches
WO2003035818A2 (fr) * 2001-10-25 2003-05-01 Henkel Kommanditgesellschaft Auf Aktien Moyen, dispositif et procede de production
US6596683B1 (en) 1998-12-22 2003-07-22 The Procter & Gamble Company Process for preparing a granular detergent composition
US6858572B1 (en) 1999-03-09 2005-02-22 The Procter & Gamble Company Process for producing coated detergent particles
WO2006016712A1 (fr) 2004-08-11 2006-02-16 Nof Corporation Composition de savon en poudre
US7022660B1 (en) 1999-03-09 2006-04-04 The Procter & Gamble Company Process for preparing detergent particles having coating or partial coating layers
DE102006056534A1 (de) * 2006-11-27 2008-05-29 "Durable" Hunke & Jochheim Gmbh & Co. Kg Klemmmappe
WO2012049033A1 (fr) * 2010-10-14 2012-04-19 Unilever Plc Procédé à cuve à laver le linge à chargement par le haut
DE202013001479U1 (de) 2013-02-15 2013-04-23 Companycreator Gmbh Klemmmappe mit Klemmorgan zur ruck- und widerstandsfreien Einführung von Schriftgut.
CN103180427A (zh) * 2010-10-14 2013-06-26 荷兰联合利华有限公司 洗涤剂组合物的包装和分配
US8883702B2 (en) 2010-10-14 2014-11-11 Conopco, Inc. Packaged particulate detergent composition
US9062281B2 (en) 2010-10-14 2015-06-23 Conopco, Inc. Particulate detergent compositions comprising fluorescer
US9273271B2 (en) 2010-10-14 2016-03-01 Conopco Inc. Laundry detergent particles
US9284517B2 (en) 2010-10-14 2016-03-15 Conopco Inc. Laundry detergent particle
US9290725B2 (en) 2010-10-14 2016-03-22 Conopco Inc. Laundry detergent particles
US9290723B2 (en) 2010-10-14 2016-03-22 Conopco Inc. Laundry detergent particles
US9290724B2 (en) 2010-10-14 2016-03-22 Conopco, Inc. Laundry detergent particles
US9365811B2 (en) 2010-10-14 2016-06-14 Conopco Inc. Manufacture of coated particulate detergents

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592535A (en) * 1941-08-01 1952-04-15 Lever Brothers Ltd Process of dedusting soap and the resulting product
US2715110A (en) * 1952-06-13 1955-08-09 Lever Brothers Ltd Method for the production of a granulated soap product
DE2340882A1 (de) * 1972-08-17 1974-02-21 Lion Fat Oil Co Ltd Verfahren zur herstellung koerniger wasch- und reinigungsmittel
GB2027048A (en) * 1978-08-03 1980-02-13 Unilever Ltd Soap Powder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2592535A (en) * 1941-08-01 1952-04-15 Lever Brothers Ltd Process of dedusting soap and the resulting product
US2715110A (en) * 1952-06-13 1955-08-09 Lever Brothers Ltd Method for the production of a granulated soap product
DE2340882A1 (de) * 1972-08-17 1974-02-21 Lion Fat Oil Co Ltd Verfahren zur herstellung koerniger wasch- und reinigungsmittel
GB2027048A (en) * 1978-08-03 1980-02-13 Unilever Ltd Soap Powder

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0076137B1 (fr) * 1981-09-29 1987-01-21 Unilever Plc Procédé pour la manufacture de poudre de savon
EP0076137A2 (fr) * 1981-09-29 1983-04-06 Unilever Plc Procédé pour la manufacture de poudre de savon
WO1996014385A1 (fr) * 1994-11-02 1996-05-17 Henkel Kommanditgesellschaft Auf Aktien Preparations solides de substances destinees au lavage de textiles en plusieurs etapes
WO2000037604A1 (fr) * 1998-12-22 2000-06-29 The Procter & Gamble Company Procede de preparation d'une composition detergente granulaire
US6596683B1 (en) 1998-12-22 2003-07-22 The Procter & Gamble Company Process for preparing a granular detergent composition
US7022660B1 (en) 1999-03-09 2006-04-04 The Procter & Gamble Company Process for preparing detergent particles having coating or partial coating layers
WO2000053719A1 (fr) * 1999-03-09 2000-09-14 The Procter & Gamble Company Particules de detergent enrobees ou partiellement enrobees de couches
US6858572B1 (en) 1999-03-09 2005-02-22 The Procter & Gamble Company Process for producing coated detergent particles
WO2003035818A2 (fr) * 2001-10-25 2003-05-01 Henkel Kommanditgesellschaft Auf Aktien Moyen, dispositif et procede de production
WO2003035818A3 (fr) * 2001-10-25 2003-09-18 Henkel Kgaa Moyen, dispositif et procede de production
EP1798280A4 (fr) * 2004-08-11 2009-12-16 Nof Corp Composition de savon en poudre
EP1798280A1 (fr) * 2004-08-11 2007-06-20 Nof Corporation Composition de savon en poudre
WO2006016712A1 (fr) 2004-08-11 2006-02-16 Nof Corporation Composition de savon en poudre
US7820613B2 (en) 2004-08-11 2010-10-26 Nof Corporation Powder soap composition
DE102006056534A1 (de) * 2006-11-27 2008-05-29 "Durable" Hunke & Jochheim Gmbh & Co. Kg Klemmmappe
DE102006056534B4 (de) * 2006-11-27 2008-07-31 "Durable" Hunke & Jochheim Gmbh & Co. Kg Klemmmappe
US8883702B2 (en) 2010-10-14 2014-11-11 Conopco, Inc. Packaged particulate detergent composition
CN103180427A (zh) * 2010-10-14 2013-06-26 荷兰联合利华有限公司 洗涤剂组合物的包装和分配
WO2012049033A1 (fr) * 2010-10-14 2012-04-19 Unilever Plc Procédé à cuve à laver le linge à chargement par le haut
US9062281B2 (en) 2010-10-14 2015-06-23 Conopco, Inc. Particulate detergent compositions comprising fluorescer
CN103180427B (zh) * 2010-10-14 2016-02-17 荷兰联合利华有限公司 洗涤剂组合物的包装和分配
US9273271B2 (en) 2010-10-14 2016-03-01 Conopco Inc. Laundry detergent particles
US9284517B2 (en) 2010-10-14 2016-03-15 Conopco Inc. Laundry detergent particle
US9290725B2 (en) 2010-10-14 2016-03-22 Conopco Inc. Laundry detergent particles
US9290723B2 (en) 2010-10-14 2016-03-22 Conopco Inc. Laundry detergent particles
US9290724B2 (en) 2010-10-14 2016-03-22 Conopco, Inc. Laundry detergent particles
US9365811B2 (en) 2010-10-14 2016-06-14 Conopco Inc. Manufacture of coated particulate detergents
DE202013001479U1 (de) 2013-02-15 2013-04-23 Companycreator Gmbh Klemmmappe mit Klemmorgan zur ruck- und widerstandsfreien Einführung von Schriftgut.

Also Published As

Publication number Publication date
GR76050B (fr) 1984-08-03
ES509268A0 (es) 1982-12-16
CA1185498A (fr) 1985-04-16
ES8302082A1 (es) 1982-12-16
AR225710A1 (es) 1982-04-15
BR8200575A (pt) 1982-12-07
NO820321L (no) 1982-08-05
EP0057611A3 (fr) 1982-08-25
ZA82687B (en) 1983-09-28
PT74385B (en) 1984-10-22
PT74385A (en) 1982-03-01

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Inventor name: EVANS, ELFED HUW

Inventor name: REES, JOHN CYRIL