EP0728187A1 - Verfahren zur herstellung einer waschmittelzusammensetzung - Google Patents

Verfahren zur herstellung einer waschmittelzusammensetzung

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Publication number
EP0728187A1
EP0728187A1 EP95900225A EP95900225A EP0728187A1 EP 0728187 A1 EP0728187 A1 EP 0728187A1 EP 95900225 A EP95900225 A EP 95900225A EP 95900225 A EP95900225 A EP 95900225A EP 0728187 A1 EP0728187 A1 EP 0728187A1
Authority
EP
European Patent Office
Prior art keywords
fluorescer
composition
mixture
component
detergent composition
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.)
Granted
Application number
EP95900225A
Other languages
English (en)
French (fr)
Other versions
EP0728187B1 (de
Inventor
Janette Wilson
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
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Application filed by Unilever PLC, Unilever NV filed Critical Unilever PLC
Publication of EP0728187A1 publication Critical patent/EP0728187A1/de
Application granted granted Critical
Publication of EP0728187B1 publication Critical patent/EP0728187B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/40—Dyes ; Pigments
    • C11D3/42—Brightening agents ; Blueing agents
    • 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
    • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
    • 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
    • C11D17/065—High-density particulate detergent compositions

Definitions

  • This invention relates to a process for the production of a detergent composition.
  • this invention relates to a process for the production of a high bulk density detergent composition containing a fluorescer.
  • high bulk density powders having excellent colour properties may be produced by incorporating a fluorescer into a liquid component of the detergent composition to produce a pre-mix of the fluorescer which is then combined with solid components in a mixing step to produce the particulate composition.
  • the components of the detergent composition will be selected to provide the desired characteristics and will generally include a surfactant and a builder in addition to the fluorescer.
  • the composition comprises at least one liquid component in order to bind the solid components together.
  • the fluorescer is mixed with a liquid component, to form a fluorescer mixture which maybe a slurry, dispersion or suspension. Agitation may be necessary in such cases to avoid undesirable sedimentation. It is especially preferred that the fluorescer mixture is a solution as particularly good powder colour may be secured.
  • the fluorescer mixture may be used to form the fluorescer mixture, although synthetic anionic surfactants and their precursors are not generally desirable for such use.
  • natural fatty acids may be employed to produce the fluorescer mixture as desired.
  • the fluorescer mixture comprises a liquid nonionic surf ctant.
  • the fluorescer mixture more preferably comprises a mixture of a fluorescer, a nonionic surfactant and water and optionally a fatty acid.
  • Ethoxylated alcohols are especially preferred. Suitable examples include SYNPERONIC A3, SYNPERONIC A7 ex ICI and coconut oil ethoxylates having an average degree of ethoxylation of 6.5.
  • examples of other liquid components which may be employed with the nonionic surfactant include polyethylene glycols, for example PEG 1500, and glycerol.
  • the fluorescer may comprise a fluorescer known in the art, such as a biphenyl compound for example a distryl biphenyl compound.
  • An especially preferred fluorescer is TINOPA CBS- X ex Ciba Geigy.
  • the fluorescer is suitably present in the composition in an amount of 0.001 to 1%, preferably 0.005 to 0.5%, more preferably 0.01% to 0.4%, especially 0.01 to 0.25% * by weight based on the total composition.
  • the liquid component and fluorescer are suitably present in the fluorescer mixture in a ratio of 10:0.01 to 5 by weight preferably 10: 0.06 to 4 and more preferably 10:0.1 to 4.
  • An especially preferred fluorescer mixture comprises a nonionic surfactant, for example SYNPERONIC A7 ex ICI, water and a fluorescer, for example TINOPAL CBS-X.
  • the nonionic surfactant and water are present in a weight ratio of 50:1 to 1:10, preferably 20:1 to 3:8 and more preferably 10:1 to 3:8. Superior powder whiteness (lower 'b' value) is obtained at higher levels of nonionic in the fluoroescer mixture.
  • the fluorescer suitably represents 1 to 25%, preferably 5 to 15% and more preferably 6 to 12% by weight of the fluorescer mixture.
  • fluorescers are included in the composition to improve fabric whiteness, thus obviating the need for undesirably high levels of coloured fluorescer, for example TINOPAL CBS-X.
  • a dimorpholino fluorescer is present in the composition together with the powder fluorescer.
  • the fluorescer mixture water is suitably prepared by mixing the fluorescer with the liquid component with agitation to obtain preferably a solution.
  • the fluorescer is mixed with the nonionic surfactant and the water is then added subsequently, or the fluorescer is added to a mixture of nonionic and water.
  • the fluorescer mixture is prepared such that sedimentation of the fluorescer and 'gelling' of the liquid at ambient temperature is avoided.
  • the solid component may comprise all of the components of the detergent composition excluding the fluorescer mixture or alternatively the solid component may comprise at least one of the said components and the other components may be incorporated into the composition during or subsequent to the mixing of the solid component and the fluorescer mixture.
  • the solid component of the composition may comprise solid particles of individual components or solid particles comprising a plurality of components hereinafter referred to as "adjuncts".
  • Components of the detergent composition which are liquid (excluding the fluorescer mixture) may be added to the solid component during or subsequent to the mixing step or incorporated by means of an adjunct as desired.
  • the solid component may be spray-dried powder but preferably comprises' materials which are not produced directly by spray- drying, especially if a high bulk density is required.
  • a second aspect of the invention provides a process for the production of a detergent composition or component containing a fluorescer which comprises mixing the fluorescer with a liquid component to form a fluorescer mixture, and mixing the said mixture.with a solid component which is not the product of a spray-drying process, whereby a particulate detergent composition is produced.
  • the mixing of the fluorescer mixture and the non- spray-dried solid is effected in a high speed mixer with the fluorescer mixture being sprayed onto the solid.
  • the particles obtained may be treated further as desired.
  • the particles may be passed directly to a cooling and/or drying step to produce finished base powder particles, to which other ingredients may then be post-mixed.
  • the particles may be passed to a second, preferably low speed, mixing step in order to increase the bulk density of the particles and optionally then cooled and/ or dried as desired.
  • a batch process may be employed in which the solid components of the composition are dosed into a mixer and the fluorescer mixture is suitably sprayed onto the solid component.
  • Suitable mixers include the FUKAE range of mixers. Other materials may be added subsequently as desired. Residence time is selected according to the required degree of granulation for example 1 to 20 minutes.
  • the fluorescer mixture is preferably sprayed onto the solid component of the composition to provide an even distribution of the mixture over the solid component.
  • a third aspect of the invention provides a detergent composition comprising a fluorescer which composition is obtainable by a process according to the first aspect of the invention.
  • a fourth aspect of the invention provides a detergent composition having a high bulk density and comprising a surfactant, detergency builder and a fluorescer which has a Delta R460 value of at least 3.5, preferably at least 5.5 and more preferably at least 6.5.
  • the fluorescer is incorporated into the composition by a process according to the first or second aspect of the invention.
  • Delta R460 values are determined by measuring the reflectance of light from the sample at 460 nm when eradiated with a tungsten lamp without a filter and measuring the reflectance, of the sample with a UV filter and calculating the difference between the two measurements.
  • the sample analysed is a 355 to 500 ⁇ m fraction obtained by sieving. This method provides an indication of the contribution of the fluorescer to the reflectance of the sample.
  • compositions produced according -to the present invention will generally contain detergent-active compounds and detergency builders, and may optionally contain bleaching components and other active ingredients to enhance performance and properties.
  • the detergent-active compounds may be chosen from soap and non-soap anionic, cationic, nonionic, amphoteric and zwitterionic detergent-active compounds, and mixtures thereof.
  • Many suitable detergent-active compounds are available and are fully described in the literature, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch.
  • the preferred detergent-active compounds that can be used are soaps and synthetic non-soap anionic and nonionic compounds.
  • Anionic surfactants are well-known to those skilled in the art. Examples include alkylbenzene sulphonates, particularly linear alkylbenzene sulphonates having an alkyl chain length of C 8 -C 15 ; primary and secondary alkyl sulphates, particularly C 12 -C 15 primary alkyl sulphates; alkyl ether sulphates; olefin sulphonates; alkyl xylene sulphonates; dialkyl sulphosuccinates; and fatty acid ester sulphonates.
  • Sodium salts are generally preferred.
  • Nonionic surfactants may be included in any adjuncts employed in the composition in addition to that which may be present in the fluorescer mixture.
  • Suitable nonionics include the primary and secondary alcohol ethoxylates, especially the C 8 -C 20 aliphatic alcohols ethoxylated with an average of from 1 to 20 moles of ethylene oxide per mole of alcohol, and more especially the C 10 -C 15 primary and secondary aliphatic alcohols ethoxylated with an average of from 1 to 10 moles of ethylene oxide per mole of alcohol.
  • Non-ethoxylated nonionic surfactants include alkylpolyglycosides also glycerol onoethers, and polyhydroxyamides (glucamide) .
  • detergent-active compound surfactant
  • amount present will depend on the intended use of the detergent composition. For example, for machine dishwashing a relatively low level of a low-foaming nonionic surfactant is generally preferred. In fabric washing compositions, different surfactant systems may be chosen, as is well known to the skilled formulator, for handwashing products and for products intended for use in different types of washing machine.
  • the total amount of surfactant present will also depend on the intended end use and may be as low as 0.5 wt%, for example, in a machine dishwashing composition, or as high as 60 wt%, for example, in a composition for washing fabrics by hand. In compositions for machine washing of fabrics, an amount of from 5 to 40 wt% is generally appropriate.
  • Detergent compositions suitable for use in most automatic fabric washing machines generally contain anionic non-soap surfactant, or nonionic surfactant, or combinations of the two in any ratio, optionally together with soap.
  • the detergent compositions of the invention will generally also contain one or more detergency builders.
  • the total amount of detergency builder in the compositions will suitably range from 10 to 80 wt%, preferably from 15 to 60 wt%.
  • Inorganic builders that may be present include sodium carbonate, if desired in combination with a crystallisation seed for calcium carbonate, as disclosed in GB 1 437 950 (Unilever) ; crystalline and amorphous aluminosilicates, for example, zeolites as disclosed in GB 1 473 201 (Henkel) , amorphous aluminosilicates as disclosed in GB 1 473 202 (Henkel) and mixed crystalline/amorphous aluminosilicates as disclosed in GB 1 470 250 (Procter & Gamble) ; and layered silicates as disclosed in EP 164 514B (Hoechst) .
  • Inorganic phosphate builders for example, sodium orthophosphate, pyrophosphate and tripolyphosphate, may also be present.
  • Zeolite builders may suitably be present in amounts of from 10 to 45 wt%, amounts of from 15 to 35 wt% being especially suitable for (machine) fabric washing compositions.
  • the zeolite used in most commercial particulate detergent compositions is zeolite A.
  • maximum aluminium zeolite P zeolite MAP
  • Zeolite MAP is an alkali metal aluminosilicate of the P type having a silicon to aluminium ratio not exceeding 1.33, preferably not exceeding 1.15, and more preferably not exceeding 1.07.
  • Organic builders that may be present include polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates, hydroxyethyliminodiacetates, alkyl- and alkenylmalonates and succinates; and sulphonated fatty acid salts. This list is not intended to be exhaustive.
  • polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphinates
  • monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-, di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates,
  • Especially preferred organic builders are citrates, nitrolotriacetic acid and oxydisuccinate and are suitably used in amounts of from 5 to 30 wt%, preferably from 10 to 25 wt%; and acrylic polymers, more especially acrylic/maleic copolymers, suitably used in amounts of from 0.5 to 15 wt%, preferably from 1 to 10 wt%.
  • Builders both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
  • Detergent compositions according to the invention may also suitably contain a bleach system.
  • Machine dishwashing compositions may suitably contain a chlorine bleach system, while fabric washing compositions may more desirably contain peroxy bleach compounds, for example, inorganic persalts or organic peroxyacids, capable of yielding hydrogen peroxide in aqueous solution.
  • Suitable peroxy bleach compounds include organic peroxides such as urea peroxide, and inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
  • organic peroxides such as urea peroxide
  • inorganic persalts such as the alkali metal perborates, percarbonates, perphosphates, persilicates and persulphates.
  • Preferred inorganic persalts are sodium perborate monohydrate and tetrahydrate, and sodium percarbonate.
  • sodium percarbonate having a protective coating against destabilisation by moisture Especially preferred is sodium percarbonate having a protective coating against destabilisation by moisture.
  • Sodium percarbonate having a protective coating comprising sodium metaborate and sodium silicate is disclosed in GB 2 123 044B (Kao) .
  • the peroxy bleach compound is suitably present in an amount of from 5 to 35 wt%, preferably from 10 to 25 wt%.
  • the peroxy bleach compound may be used in conjunction with a bleach activator (bleach precursor) to improve bleaching action at low wash temperatures.
  • the bleach precursor is suitably present in an amount of from 1 to 8 wt%, preferably from 2 to 5 wt%.
  • Preferred bleach precursors are peroxycarboxylic acid precursors, more especially peracetic acid precursors and peroxybenzoic acid precursors; and peroxycarbonic acid precursors.
  • An especially preferred bleach precursor suitable for use in the present invention is N,N,N' ,N" -tetracetyl ethylenediamine (TAED) .
  • novel quaternary ammonium and phosphonium bleach precursors disclosed in US 4 751 015 and US 4 818 426 (Lever Brothers Company) and EP 402 971A (Unilever) are also of great interest.
  • peroxycarbonic acid precursors in particular cholyl-4-sulphophenyl carbonate.
  • peroxybenzoic acid precursors in particular, N,N,N-trimethylammonium toluoyloxy benzene sulphonate; and the cationic bleach precursors disclosed in EP 284 292A and EP 303 520A (Kao) .
  • An especially preferred bleach system comprises a peroxy bleach compound (preferably sodium percarbonate optionally together with a bleach activator) , and a transition metal bleach catalyst as described and claimed in EP 458 397A, EP 458 398A and EP 509 787A (Unilever) .
  • a peroxy bleach compound preferably sodium percarbonate optionally together with a bleach activator
  • a transition metal bleach catalyst as described and claimed in EP 458 397A, EP 458 398A and EP 509 787A (Unilever) .
  • compositions of the invention may contain alkali metal, preferably sodium, carbonate, in order to increase detergency and ease processing.
  • Sodium carbonate may suitably be present in amounts ranging from 1 to 60 wt%, preferably from 2 to 40 wt%.
  • compositions containing little or no sodium carbonate are also within the scope of the invention.
  • Powder flow may be improved by the incorporation of a small amount of a powder structurant, for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate polymer, or sodium silicate.
  • a powder structurant for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate polymer, or sodium silicate.
  • a powder structurant for example, a fatty acid (or fatty acid soap) , a sugar, an acrylate or acrylate/maleate polymer, or sodium silicate.
  • fatty acid soap suitably present in an amount of from 1 to 5 wt%.
  • detergent compositions of the invention include sodium silicate and sodium metasilicate; antiredeposition agents such as cellulosic polymers; inorganic salts such as sodium sulphate; lather control agents or lather boosters as appropriate; proteolytic and lipolytic enzymes; dyes; coloured speckles, • perfumes; foam controllers; and fabric softening compounds. This list is not intended to be exhaustive.
  • composition not according to the invention having the same components as listed for Examples 1 to 6 and solid fluorescer (0.2 parts) and non-active solid surfactant (2 parts) was produced by mixing under the same conditions as Examples 1 to 6.
  • compositions contained the following components (parts by weight) :
  • the F value of the 350 to 500 ⁇ fraction of the powders was determined for the fresh powder and after 2 weeks at ambient conditions. The results are shown in Table 4.
  • Powders produced in these Examples exhibit excellent colour characteristics both as a fresh powder and after 2 weeks.
  • a higher proportion of nonionic in the fluorescer mixture was found to be advantageous in providing improved whiteness (lower 'b' value) .
  • Powders were produced by the same process and having the same composition as those of Examples 7 to 14 with fluorescer mixture compositions as follows:
  • the F values of these powders were determined and observed to be in excess of 8 both for the fresh powder and after 9 days.
  • the 'b' values were also determined and found to be between 2.5 and 4 for fresh powder and between 4 and 5 after 9 days.
  • the 'b' and F values illustrate that powders having excellent colour properties may be obtained by the process of the invention.

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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)
  • Detergent Compositions (AREA)
EP95900225A 1993-11-11 1994-11-09 Verfahren zur herstellung einer waschmittelzusammensetzung Expired - Lifetime EP0728187B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB939323250A GB9323250D0 (en) 1993-11-11 1993-11-11 Process for the production of a detergent composition
GB9323250 1993-11-11
PCT/GB1994/002458 WO1995013358A1 (en) 1993-11-11 1994-11-09 Process for the production of a detergent composition

Publications (2)

Publication Number Publication Date
EP0728187A1 true EP0728187A1 (de) 1996-08-28
EP0728187B1 EP0728187B1 (de) 1999-01-20

Family

ID=10744991

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95900225A Expired - Lifetime EP0728187B1 (de) 1993-11-11 1994-11-09 Verfahren zur herstellung einer waschmittelzusammensetzung

Country Status (15)

Country Link
EP (1) EP0728187B1 (de)
JP (1) JP2813469B2 (de)
CN (1) CN1063481C (de)
AU (1) AU8112494A (de)
BR (1) BR9408035A (de)
CA (1) CA2173445C (de)
CZ (1) CZ290773B6 (de)
DE (1) DE69416157T2 (de)
ES (1) ES2127503T3 (de)
GB (1) GB9323250D0 (de)
HU (1) HU217767B (de)
PL (1) PL177611B1 (de)
SK (1) SK281898B6 (de)
WO (1) WO1995013358A1 (de)
ZA (1) ZA948557B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19538029A1 (de) 1995-10-12 1997-04-17 Sued Chemie Ag Waschmittelzusatz
GB2318360A (en) * 1996-10-15 1998-04-22 Ciba Geigy Ag Fluorescent whitening agent formulation
CA2936149A1 (en) 2014-01-20 2015-07-23 The Procter & Gamble Company Fluorescent brightener premix

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2856087A1 (de) * 1978-12-23 1980-07-10 Henkel Kgaa Verfahren zur herstellung weisser, optische aufheller und kationenaustauschfaehige alumosilikate enthaltender, pulverfoermiger waschmittel
JPS63265999A (ja) * 1987-04-22 1988-11-02 Kao Corp 高密度粒状濃縮洗剤組成物
JPH0633439B2 (ja) * 1988-07-28 1994-05-02 花王株式会社 高密度粒状濃縮洗剤組成物
FR2655658B1 (fr) * 1989-12-08 1994-11-18 Rhone Poulenc Chimie Compose lessiviel a base d'un polyphosphate et notamment d'un agent optiquement actif, son procede de preparation et son utilisation en detergence.
DK0578872T3 (da) * 1992-07-15 1999-06-23 Procter & Gamble Detergentsammensætninger
JPH07302401A (ja) * 1994-04-28 1995-11-14 Narita Giken Kk 磁気記録再生装置の回転磁気ヘッド装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9513358A1 *

Also Published As

Publication number Publication date
CA2173445A1 (en) 1995-05-18
HUT75017A (en) 1997-03-28
CZ136096A3 (en) 1996-10-16
BR9408035A (pt) 1996-12-17
HU9601255D0 (en) 1996-07-29
SK281898B6 (sk) 2001-09-11
WO1995013358A1 (en) 1995-05-18
SK57796A3 (en) 1997-06-04
CZ290773B6 (cs) 2002-10-16
AU8112494A (en) 1995-05-29
CN1134723A (zh) 1996-10-30
EP0728187B1 (de) 1999-01-20
PL177611B1 (pl) 1999-12-31
JP2813469B2 (ja) 1998-10-22
HU217767B (hu) 2000-04-28
CA2173445C (en) 2000-07-18
GB9323250D0 (en) 1994-01-05
JPH09506122A (ja) 1997-06-17
CN1063481C (zh) 2001-03-21
ZA948557B (en) 1996-04-30
DE69416157T2 (de) 1999-06-02
DE69416157D1 (de) 1999-03-04
ES2127503T3 (es) 1999-04-16

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