+

WO1996004359A1 - Granulation survenant dans un lit fluidise - Google Patents

Granulation survenant dans un lit fluidise Download PDF

Info

Publication number
WO1996004359A1
WO1996004359A1 PCT/EP1995/002935 EP9502935W WO9604359A1 WO 1996004359 A1 WO1996004359 A1 WO 1996004359A1 EP 9502935 W EP9502935 W EP 9502935W WO 9604359 A1 WO9604359 A1 WO 9604359A1
Authority
WO
WIPO (PCT)
Prior art keywords
acid
process according
precursor
detergent composition
bulk density
Prior art date
Application number
PCT/EP1995/002935
Other languages
English (en)
Inventor
Shashank Vaman Dhalewadikar
Vinodkumar Ramniranjan Dhanuka
Niraj Dhansukhlal Mistry
Fakhruddin Esmail Pacha
Original Assignee
Unilever Plc
Unilever N.V.
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 N.V. filed Critical Unilever Plc
Priority to PL95318548A priority Critical patent/PL181161B1/pl
Priority to BR9508505A priority patent/BR9508505A/pt
Priority to AU31656/95A priority patent/AU702808B2/en
Priority to SK145-97A priority patent/SK282576B6/sk
Priority to EP95927721A priority patent/EP0775193A1/fr
Priority to CZ1997305A priority patent/CZ289884B6/cs
Priority to HU9700357A priority patent/HU222907B1/hu
Publication of WO1996004359A1 publication Critical patent/WO1996004359A1/fr
Priority to MXPA/A/1997/000863A priority patent/MXPA97000863A/xx

Links

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
    • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
    • 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
    • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
    • C11D11/04—Special methods for preparing compositions containing mixtures of detergents by chemical means, e.g. by sulfonating in the presence of other compounding ingredients followed by neutralising

Definitions

  • the present invention relates to a detergent composition having a low bulk density (BD) and a process for its production by dry neutralisation and further envisages the use of a fluidised bed for manufacture of such detergent compositions.
  • BD bulk density
  • Henkel 4304062 describes the production of a cleaning active surfactant granulate in which an anionic surfactant in acid form is neutralized with an aqueous alkali solution under high gas pressure in a granulation and drying chamber. In this process the drying of a non-surfactant liquid component by using hot air is an essential step.
  • East German Patent No. 140 987 discloses a continuous process for the production of granular washing and cleaning compositions, wherein liquid components such as nonionic surfactants or the acid precursors of anionic surfactants are sprayed onto a powdered builder material, especially sodium tripolphosphate (STPP) having a high phase II content to obtain a product with bulk density ranging from 530 - 580 g/L.
  • STPP sodium tripolphosphate
  • the process according to the said East German Patent is restricted to the use of STPP having a high phase II content.
  • GB1404317 discloses the preparation of a detergent powder of low or moderate bulk density by a dry neutralization process. Sulphonic acid is mixed with an excess of soda ash in the presence of sufficient water to initiate the neutralization reaction but not enough to wet the resulted product which is in the form of a free-flowing powder.
  • the process is carried out in a mixing apparatus, for example a ribbon blender, planetary mixer or air transfer mixer.
  • a mixing apparatus the particulate detergent material is subjected to compressive forces which may lead to an increase in bulk density.
  • a process for the production of a " detergent composition having a low bulk density which comprises contacting an acid precursor of an anionic surfactant with a neutralizing agent in a fluidised bed to effect- neutralisation of the precursor whereby the detergent composition is obtained.
  • the invention provides in a second aspect, a process for the production of a particulate detergent composition having a low bulk density which comprises feeding a particulate material comprising a neutralising agent and optionally a detergency builder in a fluidisation zone, fluidising the material, contacting a liquid precursor of an anionic surfactant with the fluidised material to effect at least partial, and preferably substantially complete, neutralisation of the acid precursor and to effect the formation of detergent particles comprising the neutralised precursor acid.
  • the fluidisation zone is provided by means of a fluid bed.
  • a process for the production of a particulate detergent composition having a low bulk density which comprises:-
  • introducing a particulate material comprising a builder and a neutralizing agent into a fluidised bed ii. introducing linear alkyl benzene sulphonate (LAS) acid into the said bed over a sufficient time to effect at least partial neutralization of the acid and to attain the required properties of the powder.
  • LAS linear alkyl benzene sulphonate
  • the invention also provides a detergent composition obtainable by a process as defined in the claims.
  • the process may be carried out in either batch or continuous mode of operation as desired.
  • the term "detergent composition” as used herein includes a detergent material which may be mixed with other conventional materials for example bleaches and enzymes to produce a fully formulated product and also a detergent component, often referred to as an adjunct, which may be treated further to produce a detergent material which may then be mixed with other materials as desired.
  • the process envisages dry neutralization of the acid precursor of an anionic surfactant with a neutralising agent by fluidisation of the neutralising agent; preferably the process is carried out in a fluidised bed.
  • the process of dry neutralisation refers to at least partial and preferably substantially complete neutralisation of the acid precursor while the mixture remains in particulate form.
  • addition of the acid precursor is controlled so that it does not accumulate in the unneutralised form in the detergent composition.
  • the neutralising agent is suitably particulate and comprises an alkaline inorganic material, preferably an alkaline salt.
  • Suitable materials include alkali metal carbonates and bicarbonates for example sodium salts thereof.
  • the neutralising agent is suitably present at a level sufficient to neutralise fully the acid precursor. If desired a stoichiometric excess of neutralising agent may be employed to ensure complete neutralisation or to provide an alternative function, for example building, in the case of sodium carbonate.
  • anionic surfactants or nonionic, cationic, zwitterionic, amphoteric or semipolar surfactants and mixtures thereof may be added at a suitable time.
  • Suitable surfactants include those generally described in "Surface active agents and detgents " Vol I by Schwartz and Perry.
  • soap derived from saturated or unsaturated fatty acids having C 12 to C 15 carbon atoms may also be present as an anionic surfactant.
  • the detergent active is suitably present at a level of 5 to 40%, preferably 12 to 30% by weight of the detergent composition.
  • the detergent composition suitably contains a detergency builder.
  • the builder may be introduced with the neutralising agent and/or added subsequently as desired.
  • the builder is introduced with the neutralising agent .
  • Any conventional builder may be employed; suitable builders include sodium carbonate, zeolite, sodium tripolphosphate (STPP) sodium citrate and/or high surface area calcite.
  • suitable builders include sodium carbonate, zeolite, sodium tripolphosphate (STPP) sodium citrate and/or high surface area calcite.
  • STPP sodium tripolphosphate
  • the builder can also consist of one of the above singularly or in combination with other builders.
  • the builder and neutralising agent may be the same material, for example sodium carbonate, in which case sufficient material will be employed for both functions.
  • the builder is suitably present at a level of 15 to 65% and preferably 15 to 50% by weight of the detergent composition.
  • Detergent powder obtained by the present invention suitably has a low bulk density in the range 350 to 650 g/1, or 450 to 650g/l, for example, in the proximity of 500 g/L and is thus comparable to a bulk density obtained by the method of spray drying.
  • a flow aid is incorporated into the composition.
  • the flow aid may be mixed with the neutralising agent and, if present, builder prior to or subsequent to partial or complete addition of the acid precursor. It is especially preferred that the flow aid be added prior to or after partial introduction of the acid precursor as a significant reduction in the bulk density of the final powder may be achieved.
  • the flow aid is suitably present in an amount of 0.1 to 15% by weight of the detergent composition and more preferably in an amount of 0.5 to 5%.
  • Suitable flow aids include crystaline or amorphous alkali metal silicate, calcite, diatomaceous earth, silica, for example precipitated silica, magnesium sulphate, and calcium carbonate, for example precipitated calcium carbonate. Mixtures of these materials may be employed as desired.
  • the flow aid is Dicamol.
  • the composition may also comprise a particulate filler which suitably comprises an inorganic salt, for example sodium sulphate and sodium chloride.
  • the filler may be present at a level of 5 to 50% by weight of the composition.
  • the detergent composition produced according to the invention suitably comprises the detergent active and builder and optionally one or more of a flow aid, a filler and other minor ingredients such as colour, perfum, fluorescers, bleaches, enzymes.
  • the particulate material (s) have a particle size distribution such that not more than 5% by weight of the particles have a particle size greater than 250 ⁇ . It is also preferred that at least 30% by weight of the particles have a particle size below 75 ⁇ .
  • the particulate material (s) has an average particle size below 200 ⁇ to provide detergent powders having a particularly desired low bulk density.
  • a controlled amount of water may be added to facilitate neutralisation.
  • the water may be added in amounts of 0.5 to 2% by weight of the final detergents composition. Any such water is suitably prior to or together or alternating with the addition of the acid precursor.
  • the particulate material is introduced into a fluidised bed and the required amount of LAS acid is then introduced preferably by spraying onto the said material and preferably from the top.
  • the flow aid maybe introduced with the starting material. However, it is preferred that the flow aid be added after part introduction of part of the LAS acid to obtain a lower bulk density.
  • the fluid bed is suitably operated at a temperature of ambient to 60°C.
  • the air flow is sufficient to cause fluidisation and is preferably in the range 0.6 to 1 ins "1 .
  • Fluidisation of the solid material is an essential feature of the present invention as this facilitates neutralisation and granulation whilst keeping the particles apart. This is to be contrasted with mixing processes in which the particles, are intentionally contacted and compressed, which may lead to higher bulk density powder and poorer powder properties.
  • EXAMPLES 1 to 19 A powdered builder/inorganic alkaline material (in Examples 1 to 4, sodium carbonate performed both functions) and a filler was introduced into a fluid bed and was fluidised by operating at a superficial air velocity above the minimum fluidisation velocity. The temperature in the fluid bed was from ambient to 60°C. Linear alkyl benzene sulphonic acid (LAS acid) was sprayed onto the powdered mix in the fluid bed.
  • LAS acid Linear alkyl benzene sulphonic acid
  • Examples 1 to 3 illustrate the effect of incorporation a flow aid (in this case Dicamol) to the composition at different points in the process.
  • a flow aid in this case Dicamol
  • Example 1 the flow aid was not added to the material.
  • Example 2 the flow aid was added to the starting material prior to the introduction of LAS acid.
  • Example 3 the flow aid was added after introduction of 50% of the LAS acid.
  • Example 4 illustrates the benefits obtained in employing a fine grade of particulate material. The results are shown below in Table 1.
  • Examples 2 and 3 illustrate that a significant reduction in bulk density may be achieved by addition of the flow aid either prior to or subsequent to introduction of part of the LAS acid.
  • Examples 5 to 19, as detailed below in Tables 3 to 5 were prepared according to the process described for Examples 1 to 4 and various raw materials having a different particle size distribution were employed. Table 2 summarises the size distribution of the various materials.
  • Soda ash % 22.0 20.0 22.0 22.0 20.0 20.0
  • Fine salt % - 30.0 - - 16.0 15.0
  • Tables 3 and 4 show the results for STPP built powders containing active in the range of 17 to 31%.
  • the soda ash and STPP had a similar particle size distribution as shown in Table 2 and formulations based on such builder systems resulted in products with bulk density close to 500 g/L.
  • Table 5 shows powders based on various builder systems, i.e. STPP, soda ash and HSA calcite. Both the soda ash and STPP built formulations resulted in powders with BD of about 500 g/1 whereas formulations based on HSA calcites resulted in powders with bulk density lower than 500 g/L.
  • Example 19 relates to a mixed active system containing 13% LAS AD and 4% soap and resulted in powder with bulk density of 500 g/L.

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)

Abstract

Un procédé de fabrication de poudres détergentes consiste à fluidiser un matériau particulaire comprenant un agent de neutralisation, placé de préférence dans un lit fluide, à mettre en contact un acide d'alkylbenzène sulfonate linéaire (LAS) avec le matériau fluidisé pour produire une neutralisation et, à titre facultatif, à ajouter un adjuvant de fluidisation à ce matériau avant, pendant ou après l'adjonction d'acide LAS.
PCT/EP1995/002935 1994-08-05 1995-07-24 Granulation survenant dans un lit fluidise WO1996004359A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
PL95318548A PL181161B1 (pl) 1994-08-05 1995-07-24 Sposób wytwarzania rozdrobnionej kompozycji detergentowej
BR9508505A BR9508505A (pt) 1994-08-05 1995-07-24 Processo para a produção de uma composição detergente e composição detergente ou seu componente
AU31656/95A AU702808B2 (en) 1994-08-05 1995-07-24 Granulation in a fluidised bed
SK145-97A SK282576B6 (sk) 1994-08-05 1995-07-24 Spôsob výroby časticovej detergentnej zmesi
EP95927721A EP0775193A1 (fr) 1994-08-05 1995-07-24 Granulation survenant dans un lit fluidise
CZ1997305A CZ289884B6 (cs) 1994-08-05 1995-07-24 Způsob výroby pracího prostředku
HU9700357A HU222907B1 (hu) 1994-08-05 1995-07-24 Szemcsés mosószer és eljárás előállítására örvényágyas granulálással
MXPA/A/1997/000863A MXPA97000863A (en) 1994-08-05 1997-02-03 Granulation in a fluidized bed

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9415904.3 1994-08-05
GB9415904A GB9415904D0 (en) 1994-08-05 1994-08-05 Process for the production of detergent composition

Publications (1)

Publication Number Publication Date
WO1996004359A1 true WO1996004359A1 (fr) 1996-02-15

Family

ID=10759488

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/002935 WO1996004359A1 (fr) 1994-08-05 1995-07-24 Granulation survenant dans un lit fluidise

Country Status (13)

Country Link
EP (1) EP0775193A1 (fr)
CN (1) CN1115403C (fr)
AU (1) AU702808B2 (fr)
BR (1) BR9508505A (fr)
CA (1) CA2195313A1 (fr)
CZ (1) CZ289884B6 (fr)
GB (1) GB9415904D0 (fr)
HU (1) HU222907B1 (fr)
PL (1) PL181161B1 (fr)
SK (1) SK282576B6 (fr)
TW (1) TW380161B (fr)
WO (1) WO1996004359A1 (fr)
ZA (1) ZA956415B (fr)

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058048A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
WO1998058047A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
WO1998058046A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
WO1999000475A1 (fr) * 1997-06-27 1999-01-07 Unilever Plc Production de granulats detergents
WO1999003964A1 (fr) * 1997-07-14 1999-01-28 The Procter & Gamble Company Procede de production d'une composition detergente de faible densite par agglomeration controlee dans un sechoir a lit fluide
WO1999003967A1 (fr) * 1997-07-14 1999-01-28 The Procter & Gamble Company Procede d'obtention d'une composition detergente a faible densite en maitrisant l'agglomeration par la repartition granulometrique
WO2000032738A1 (fr) * 1998-12-01 2000-06-08 Henkel Kommanditgesellschaft Auf Aktien Procede de granulation
US6077820A (en) * 1995-12-20 2000-06-20 Lever Brothers Company Division Of Conopco, Inc. Process for preparing a granular detergent
US6121229A (en) * 1996-10-04 2000-09-19 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6136777A (en) * 1996-10-04 2000-10-24 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6143711A (en) * 1996-10-04 2000-11-07 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6150323A (en) * 1996-10-04 2000-11-21 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6172034B1 (en) 1996-10-04 2001-01-09 The Procter & Gamble Process for making a detergent composition by non-tower process
US6211138B1 (en) 1996-10-04 2001-04-03 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6211137B1 (en) 1996-10-04 2001-04-03 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6362154B1 (en) 1998-12-23 2002-03-26 Henkel Kommanditgesellschaft Auf Aktien Multiphase cleaning composition containing naphthalene sulfonic acid/formaldehyde condensate
US6369015B1 (en) 1998-11-20 2002-04-09 Unilever Home & Personal Care, Usa Division Of Conopco, Inc. Particulate laundry detergent compositions containing anionic surfactant granules
US6391844B1 (en) 1996-10-04 2002-05-21 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6423679B1 (en) 1997-07-15 2002-07-23 The Procter & Gamble Company Process for making high-active detergent agglomerates by multi-stage surfactant paste injection
US6432905B1 (en) 1999-03-30 2002-08-13 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Dry neutralization process for detergent powder composition
US6440342B1 (en) 1998-07-08 2002-08-27 The Procter & Gamble Company Process for making a low density detergent composition by controlling nozzle height in a fluid bed dryer
WO2003016454A1 (fr) * 2001-08-13 2003-02-27 Unilever Plc Procede de production de granules detergents
WO2003016453A1 (fr) * 2001-08-13 2003-02-27 Unilever Plc Procede de production de detergent en granules
US6555514B1 (en) 1998-10-26 2003-04-29 The Procter & Gamble Company Processes for making granular detergent composition having improved appearance and solubility
US6680288B1 (en) 1999-11-22 2004-01-20 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Process for preparing granular detergent compositions
US6992055B1 (en) * 1996-09-06 2006-01-31 Kao Corporation Process for preparing detergent compositions having high bulk density
DE102005005499A1 (de) * 2005-02-04 2006-08-17 Henkel Kgaa Verfahren zur Herstellung von Wasch- oder Reinigungsmitteln
EP2123742A1 (fr) 2008-05-14 2009-11-25 The Procter and Gamble Company Compositions de détergent solide pour lessive comprenant du sel de silicate à faible densité

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1094383C (zh) * 1998-09-11 2002-11-20 自贡市化工研究设计院 沉淀水合二氧化硅的喷雾—流化床造粒方法

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425948A (en) * 1966-01-03 1969-02-04 Wyandotte Chemicals Corp Composition and process for light-weight surfactant products
GB1369269A (en) * 1971-02-01 1974-10-02 Colgate Palmolive Co Method for neutrlization of detergent acid
GB1404317A (en) * 1971-10-23 1975-08-28 Bell Chemicals Pty Ltd Manufacture of detergent powders
DD140987B1 (de) * 1979-01-05 1982-06-30 Manfred Mittelstrass Kontinuierliches herstellungsverfahren granulierter wasch-und reinigungsmittel in wirbelschichtapparaten
RO88903A2 (fr) * 1983-11-04 1986-06-30 Intreprinderea De Detergenti"Dero",Ro Procede et installation pour la fabrication des detergents granules
US4734224A (en) * 1986-09-15 1988-03-29 The Dial Corporation Dry neutralization process for detergent slurries
EP0353976A1 (fr) * 1988-08-05 1990-02-07 Cussons (International) Limited Détergents
DE4232874A1 (de) * 1992-09-30 1994-03-31 Henkel Kgaa Verfahren zur Herstellung von Tensidgranulaten

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3425948A (en) * 1966-01-03 1969-02-04 Wyandotte Chemicals Corp Composition and process for light-weight surfactant products
GB1369269A (en) * 1971-02-01 1974-10-02 Colgate Palmolive Co Method for neutrlization of detergent acid
GB1404317A (en) * 1971-10-23 1975-08-28 Bell Chemicals Pty Ltd Manufacture of detergent powders
DD140987B1 (de) * 1979-01-05 1982-06-30 Manfred Mittelstrass Kontinuierliches herstellungsverfahren granulierter wasch-und reinigungsmittel in wirbelschichtapparaten
RO88903A2 (fr) * 1983-11-04 1986-06-30 Intreprinderea De Detergenti"Dero",Ro Procede et installation pour la fabrication des detergents granules
US4734224A (en) * 1986-09-15 1988-03-29 The Dial Corporation Dry neutralization process for detergent slurries
EP0353976A1 (fr) * 1988-08-05 1990-02-07 Cussons (International) Limited Détergents
DE4232874A1 (de) * 1992-09-30 1994-03-31 Henkel Kgaa Verfahren zur Herstellung von Tensidgranulaten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 8703, Derwent World Patents Index; Class D25, AN 87-019854 *

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6077820A (en) * 1995-12-20 2000-06-20 Lever Brothers Company Division Of Conopco, Inc. Process for preparing a granular detergent
US6992055B1 (en) * 1996-09-06 2006-01-31 Kao Corporation Process for preparing detergent compositions having high bulk density
US6136777A (en) * 1996-10-04 2000-10-24 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6391844B1 (en) 1996-10-04 2002-05-21 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6211137B1 (en) 1996-10-04 2001-04-03 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6211138B1 (en) 1996-10-04 2001-04-03 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6172034B1 (en) 1996-10-04 2001-01-09 The Procter & Gamble Process for making a detergent composition by non-tower process
US6150323A (en) * 1996-10-04 2000-11-21 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6143711A (en) * 1996-10-04 2000-11-07 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6121229A (en) * 1996-10-04 2000-09-19 The Procter & Gamble Company Process for making a detergent composition by non-tower process
US6274544B1 (en) 1997-06-16 2001-08-14 Lever Brothers Company, Division Of Conopco, Inc. Production of detergent granulates
AU743403B2 (en) * 1997-06-16 2002-01-24 Unilever Plc Production of detergent granulates
WO1998058047A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
US6056905A (en) * 1997-06-16 2000-05-02 Lever Brothers Company Division Of Conopco, Inc. Production of detergent granulates
US6429184B1 (en) 1997-06-16 2002-08-06 Lever & Brothers Company, Division Of Conopco, Inc. Production of detergent granulates
WO1998058046A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
WO1998058048A1 (fr) * 1997-06-16 1998-12-23 Unilever Plc Production de granules detergents
US6133223A (en) * 1997-06-27 2000-10-17 Lever Brothers Company, Division Of Conopco, Inc. Production of detergent granulates
WO1999000475A1 (fr) * 1997-06-27 1999-01-07 Unilever Plc Production de granulats detergents
WO1999003964A1 (fr) * 1997-07-14 1999-01-28 The Procter & Gamble Company Procede de production d'une composition detergente de faible densite par agglomeration controlee dans un sechoir a lit fluide
US6258773B1 (en) 1997-07-14 2001-07-10 The Procter & Gamble Company Process for making a low density detergent composition by controlling agglomeration via particle size
WO1999003967A1 (fr) * 1997-07-14 1999-01-28 The Procter & Gamble Company Procede d'obtention d'une composition detergente a faible densite en maitrisant l'agglomeration par la repartition granulometrique
US6423679B1 (en) 1997-07-15 2002-07-23 The Procter & Gamble Company Process for making high-active detergent agglomerates by multi-stage surfactant paste injection
US6440342B1 (en) 1998-07-08 2002-08-27 The Procter & Gamble Company Process for making a low density detergent composition by controlling nozzle height in a fluid bed dryer
US6555514B1 (en) 1998-10-26 2003-04-29 The Procter & Gamble Company Processes for making granular detergent composition having improved appearance and solubility
US6369015B1 (en) 1998-11-20 2002-04-09 Unilever Home & Personal Care, Usa Division Of Conopco, Inc. Particulate laundry detergent compositions containing anionic surfactant granules
WO2000032738A1 (fr) * 1998-12-01 2000-06-08 Henkel Kommanditgesellschaft Auf Aktien Procede de granulation
US6362154B1 (en) 1998-12-23 2002-03-26 Henkel Kommanditgesellschaft Auf Aktien Multiphase cleaning composition containing naphthalene sulfonic acid/formaldehyde condensate
US6432905B1 (en) 1999-03-30 2002-08-13 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Dry neutralization process for detergent powder composition
US6680288B1 (en) 1999-11-22 2004-01-20 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Process for preparing granular detergent compositions
WO2003016453A1 (fr) * 2001-08-13 2003-02-27 Unilever Plc Procede de production de detergent en granules
WO2003016454A1 (fr) * 2001-08-13 2003-02-27 Unilever Plc Procede de production de granules detergents
RU2294360C2 (ru) * 2001-08-13 2007-02-27 Унилевер Нв Способ получения детергентных гранул
DE102005005499A1 (de) * 2005-02-04 2006-08-17 Henkel Kgaa Verfahren zur Herstellung von Wasch- oder Reinigungsmitteln
EP2123742A1 (fr) 2008-05-14 2009-11-25 The Procter and Gamble Company Compositions de détergent solide pour lessive comprenant du sel de silicate à faible densité
EP2123743A1 (fr) 2008-05-14 2009-11-25 The Procter and Gamble Company Composition de détergent solide pour lessive comprenant du sel de silicate à faible densité
EP2128235A1 (fr) 2008-05-14 2009-12-02 The Procter and Gamble Company Composition de détergent solide pour lessive comprenant du sel de silicate à faible densité
US7727947B2 (en) 2008-05-14 2010-06-01 The Procter & Gamble Company Process for the preparation of a solid laundry detergent composition comprising light density silicate salt
US7732394B2 (en) 2008-05-14 2010-06-08 The Procter & Gamble Company Solid laundry detergent composition comprising light density silicate salt

Also Published As

Publication number Publication date
HUT77715A (hu) 1998-07-28
GB9415904D0 (en) 1994-09-28
CN1115403C (zh) 2003-07-23
BR9508505A (pt) 1998-05-26
SK282576B6 (sk) 2002-10-08
AU3165695A (en) 1996-03-04
CZ289884B6 (cs) 2002-04-17
PL318548A1 (en) 1997-06-23
CA2195313A1 (fr) 1996-02-15
EP0775193A1 (fr) 1997-05-28
HU222907B1 (hu) 2003-12-29
TW380161B (en) 2000-01-21
MX9700863A (es) 1997-09-30
CN1155297A (zh) 1997-07-23
CZ30597A3 (en) 1997-09-17
AU702808B2 (en) 1999-03-04
SK14597A3 (en) 1997-07-09
ZA956415B (en) 1997-02-03
PL181161B1 (pl) 2001-06-29

Similar Documents

Publication Publication Date Title
AU702808B2 (en) Granulation in a fluidised bed
EP0420317B1 (fr) Procédé de préparation de compositions détergentes à haute densité apparente
US5397507A (en) Process for the production of washing- and cleaning-active granules
EA000766B1 (ru) Способ получения гранулированного моющего средства
JPH06510070A (ja) 界面活性剤粒状物の製造方法
JPH07116476B2 (ja) 改善された溶解性を有する粒状洗剤組成物
JPH06502212A (ja) 粒状感ｐＨ界面活性剤を含有する高密度洗剤組成物の製法
CA2242420C (fr) Procede pour la production d'une composition detergente
JPH04363398A (ja) 洗剤組成物とその調製方法
US5736502A (en) Process for preparing detergent compositions
KR960001021B1 (ko) 세제 조성물 및 그 제조 방법
AU751566B2 (en) Detergent powder composition
EP0436240B1 (fr) Procédé de préparation de compositions détergentes à haute densité ayant des propriétés améliorées de diffusion
JPH07116477B2 (ja) 溶解性が改善された粒状洗剤組成物
RU2311451C2 (ru) Способ получения гранул детергента
PL187377B1 (pl) Sposób wytwarzania kompozycji detergentowej lub jej komponentu
MXPA97000863A (en) Granulation in a fluidized bed
MXPA00000207A (en) Production of detergent granulates

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 95194514.9

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU IS JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TT UA UG UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ UG AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 1995927721

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2195313

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 14597

Country of ref document: SK

Ref document number: PA/a/1997/000863

Country of ref document: MX

Ref document number: PV1997-305

Country of ref document: CZ

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1995927721

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: PV1997-305

Country of ref document: CZ

WWW Wipo information: withdrawn in national office

Ref document number: 1995927721

Country of ref document: EP

WWG Wipo information: grant in national office

Ref document number: PV1997-305

Country of ref document: CZ

点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载