EP0912691A1 - Liquide detergent, isotrope, alcalin et concentre comportant un agent de blanchiment - Google Patents

Liquide detergent, isotrope, alcalin et concentre comportant un agent de blanchiment

Info

Publication number
EP0912691A1
EP0912691A1 EP97924117A EP97924117A EP0912691A1 EP 0912691 A1 EP0912691 A1 EP 0912691A1 EP 97924117 A EP97924117 A EP 97924117A EP 97924117 A EP97924117 A EP 97924117A EP 0912691 A1 EP0912691 A1 EP 0912691A1
Authority
EP
European Patent Office
Prior art keywords
composition
surfactant
composition according
test
bleach
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.)
Withdrawn
Application number
EP97924117A
Other languages
German (de)
English (en)
Inventor
Michael John Day
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.)
Warwick International Group Ltd
Original Assignee
Warwick International Group Ltd
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 Warwick International Group Ltd filed Critical Warwick International Group Ltd
Publication of EP0912691A1 publication Critical patent/EP0912691A1/fr
Withdrawn legal-status Critical Current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
    • C11D3/39—Organic or inorganic per-compounds
    • 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
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions

Definitions

  • This invention relates to concentrated alkaline isotropic fabric washing liquid detergents with hydrogen peroxide bleach.
  • Concenrrated alkaline isotropic fabnc washing liquid detergents xisualry contain a hydrotrope to allow a high suj-facta ⁇ t level to be used without die viscosity becoming too great
  • Typical hydrotropes are sodium xylene su-ph ⁇ nate, ethanol, and propylene grycoL Inlemational application PCT/GB96 00642 contains such compositi ⁇ Ds comprising a nrixture of nonionic surfactant and anionic surfactant together with a hydrotrope and hydrogen peroxide characterised in that die composition comprises greater than 40% total surfactant when nonionic rich or greater than 20% total surfactant when anionic rich.
  • a concentrated peroxide liquid is desirable because of the reduced transport and storage costs.
  • a solution to the problem of how to formulate stable concentrated alkaline isotropic fabric washing liquid detergents with peroxide has ehided those skilled in the ait for many years.
  • Thickened peroxide compositions are also known. These contain a thickening system to boost viscosity when only low levels of surfactant are present.
  • GB 2255507 is typical and discloses a thk-kened peroxide-containing composition with less than 10% surfactant.
  • These comrpositions are not suitable for use as laundry detergents. They are thickened in order to give the desired result of a squeezable ⁇ mposition that does not nm when put on to a vertical surface. Such compositions do not contain a hydrotrope and always contain less than 10% total surfactant A skilled person would not use these thickened hydrotrope-free compositions as a starting point for the formulation of a new concentrated fabric washing detergent
  • a concentrated alkaline isotropic fabric washing liquid detergent composition comprising a total surfactant level which includes at least 15% surfactants and further comprises at least 0.2% hydrogen peroxide bleach and an optical brightener, characterised in that the composition is substantially free from hydrotropes. It is preferred that die composition has no added - * r drot-rope whatsoever. A small presence of up to 2.5% preferably less than 1.5%, and most preferably less than 0.5% of a material which may "function as a hydrotrope may be present perhaps as a result of one of e ingredients of die composition containing this material as a minor constituent or impurity.
  • compositions which are substantially free from material which may mnction as a hydrotrope are therefore within the scope of the present invention.
  • the total surfactant level is preferably at least 20%, more preferably at least 23 %.
  • die composition comprises anionic and nonionic surfactants.
  • Any optic * al r_-rigl * ⁇ '£nCTtJ ⁇ at is An optical brightener that has good compatibility with peroxide bleach is Tinopal CBS-X a distyiyl biphenyl derivative ex Ciba Geigy. St ⁇ bene based fluorescers may also be used as the optical brightener.
  • a concentrated alkaline isotropic fabric washing liquid detergent composition comprising a total surfactant level which includes at least 23% of surfactants selected fiom the group cor ⁇ prising anionic and nonionic surfactants, and further comprises at least 0.2% hydrogen peroxide bleach, characterised in that the composition is substantially free fiom hydrotropes.
  • the composition may also comprise an optical brightener as defined above.
  • the nonionic surfactant preferably comprises more than 5% by weight of the total composition and advantageously d e composition includes no more than 5% of surfactants winch do not satisfy d e pH criteria when tested according to Test A as described hereinafter. Most advantageously it comprises no more than 5% of surfactants which do not satisfy the residual peroxide criteria when tested according to Test A as described hereinafter.
  • the surfactant system is preferably a mbcture of anionic and nonionic surfactants, although entirely nonionic or anionic surfactant systems may be used.
  • Compositions may contain an appropriate builder or be unbuilt Among the preferred anionic surfactants are:
  • Alkyl ether sulphates such as Neopon LOS70, a 70% active sodium salt ex Witco;
  • die preferred nonionic surfactants are:
  • the pH of the composition may lie in die range 7 to 12, and is preferably around 9.5.
  • the peroxide is preferably present as dissolved hydrogen peroxide in an amount by weight in the range 0.2 to 15% preferably 1 to 8% and most preferably around 5%.
  • composition may also comprise minor components conventionally found in a heavy duty liquid detergent composition.
  • minor components include perfume, suitably protected enzymes, surfactant preservatives, thickeners, colorants, builders, anti-redeposition agents, anti-dye transfer agents - poryvinylpyrroHdone (PVP) which acts bom as an a ⁇ thredeposition agent and an anti-dye transfer polymer is preferred - and other conventional additives.
  • perfume suitably protected enzymes, surfactant preservatives, thickeners, colorants, builders, anti-redeposition agents, anti-dye transfer agents - poryvinylpyrroHdone (PVP) which acts bom as an a ⁇ thredeposition agent and an anti-dye transfer polymer is preferred - and other conventional additives.
  • PVP poryvinylpyrroHdone
  • the composition preferably contains sequestrants.
  • Preferred sequestrants are sodium diedrylene triamine pentam.ahy.ene phosphonate, sold as Dequest 2066 by Monsanto, either alone or used with 2,2' dipyridylamine (DPA) or l,2'-diaminocyclohexyl tetrakis methylene phosphonic acid.
  • DPA 2,2' dipyridylamine
  • Otiher sequejiering agents for transition metal ions may be used instead of, or in addition to, ⁇ ese preferred sequestrants.
  • compositions according to die invention are activated by use of a bleach activator such as TAF.D which may be brought into contact with the composition at the time of use by means of a two compartment dispensing system.
  • a bleach activator such as TAF.D which may be brought into contact with the composition at the time of use by means of a two compartment dispensing system.
  • the concentrated alkaline isotropic fabric washing liquid detergent composition may be used to pre-treat stained or other specific fabric localities before d e fabric is washed.
  • the stain removal is superior to tiiat which can be obtained fiom the known acid peroxide compositions and d e overall performance is enhanced by the high level of surfactant which is possible in compositions according to die present invention.
  • the use of a concentrated fo-cmulation also confers the advantage of lower transport and packaging cost, which is environmentally desirable. according to any one of claims 1 to 11 to a selected area of the item, leaving it in contact with the item for a short treatment period and then washing die item.
  • the treatment period will typically be 1 to 5 minutes, preferably about 2 minutes.
  • Test A The following procedure, referred to as Test A is used for identifying suitable surfactants on de basis of pH and peroxide stability data.
  • a trial fo ⁇ ulation is prepared using 20% w w (except Mariinat CM20 which was tested at 15% ww) of die surfactant to be screened.
  • Dequest 2066 hydrogen peroxide sufficient to give a 5% w/w concentration of peroxide is added and d e pH is adjusted to 9.5 by die addition of pre-sequestered caustic solution. Details of the surfactants tested are given in Table 1. Table 1 - Surfactants tested
  • Residual peroxide is determined by permanganate titration.
  • a surfactant should pass bom die pH and die peroxide targets. It is possible to use small ( ⁇ 5% preferred) amounts of surfactant which does not pass all die taigets, but this is only practical when die majority of the sur&ctants exceed die taigets by a good margin.
  • pH targets pH **5 ⁇ * > 9.0 after 12 weeks at 25°C H-'. j * > 7.5 after 12 weeks at 37°C ⁇ H* 5 4 ⁇ 8.0 after 4 weeks at 45°C
  • A3 and A4 are inferior in terms of pH stability because me pH has drifted urwards for them. In practice an upward drift may not be a problem because d e benefits of an alkaline composition are retained.
  • NI > A6 > A3 > A4 > Al G ⁇ nsklering bodi pH and peroxide stability the preferred surfactants are therefore those listed above.
  • Especially preferred for their combination of pH stability and peroxide stability are die secondary alkane sulphonates A3 and A4.
  • Test B consists of measuring d e viscosity of a series of surfactant solutions w h concentrations increasing by increments of 5%.
  • concentration above which the viscosity exceeds a value of 1200 cps is referred to in this specification as die threshold concentration.
  • die threshold concentration The concentration above which the viscosity exceeds a value of 1200 cps is referred to in this specification as die threshold concentration.
  • the test uses 1200 cps as being an approximate upper limit in terms of consumer acceptability.
  • the level at which a particular surfactant is used in a liquid detergent should be below die threshold concentration, preferably by at least 5%, and more preferably by at least 9%.
  • Table 4 gives details of the example formulations. All composition data is on a 100% w/w basis.
  • Fomrnilarions included PVP (polyvmylpy ⁇ OHdone) as an ant edeposition and anti-dye transfer agent and TINOPAL CBS-X, an optical brightener ex Ciba Geigy.
  • Storage Data for die fomiulations at a range of isothermal storage conditions is given in Tables 5 to 9. Bodi pH and residual peroxide data is given Often, because peroxide is more stable under more acid conditions, a reasonable peroxide stability is obtained if there is a decrease in composition pH A pH drop is undesirable because it reduces die detergency and it makes it harder to activate die peroxide widi a bleach activator such as TAED. T j ⁇ l ** - Example. 1

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)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)

Abstract

Cette composition d'un liquide détergent, isotrope, alcalin, concentré et destiné au lavage de textiles comprend au moins 23 % de tensioactifs ainsi que 0,2 % d'un agent de blanchiment à base de peroxyde d'hydrogène, la composition étant essentiellement dépourvue d'hydrotropes provoquant l'abaissement du pH et compromettant l'efficacité du détergent. On décrit également une composition de liquide détergent, isotrope, alcalin, concentré, destiné au lavage de textiles et comprenant au moins 15 % en poids de tensioactifs, au moins 0,2 % en poids de peroxyde d'hydrogène ainsi qu'un azurant optique, cette composition étant également essentiellement dépourvue d'hydrotropes. On peut utiliser ces compositions en tant que liquide de blanchiment pour le lavage ou pour le prélavage, ce liquide pouvant être activé à l'aide d'un activateur du blanchiment.
EP97924117A 1996-05-28 1997-05-28 Liquide detergent, isotrope, alcalin et concentre comportant un agent de blanchiment Withdrawn EP0912691A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB9611063 1996-05-28
GBGB9611063.0A GB9611063D0 (en) 1996-05-28 1996-05-28 Concentrated alkaline isotropic detergent liquid with bleach
PCT/GB1997/001449 WO1997045518A1 (fr) 1996-05-28 1997-05-28 Liquide detergent, isotrope, alcalin et concentre comportant un agent de blanchiment

Publications (1)

Publication Number Publication Date
EP0912691A1 true EP0912691A1 (fr) 1999-05-06

Family

ID=10794377

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97924117A Withdrawn EP0912691A1 (fr) 1996-05-28 1997-05-28 Liquide detergent, isotrope, alcalin et concentre comportant un agent de blanchiment

Country Status (18)

Country Link
EP (1) EP0912691A1 (fr)
JP (1) JP2001501646A (fr)
KR (1) KR20000016075A (fr)
CN (1) CN1219962A (fr)
AU (1) AU2968897A (fr)
BG (1) BG102957A (fr)
BR (1) BR9709384A (fr)
CA (1) CA2252634A1 (fr)
CZ (1) CZ385398A3 (fr)
GB (1) GB9611063D0 (fr)
ID (1) ID17256A (fr)
IL (1) IL126559A0 (fr)
NO (1) NO985541L (fr)
PL (1) PL330118A1 (fr)
SK (1) SK160298A3 (fr)
TR (1) TR199802461T2 (fr)
TW (1) TW381119B (fr)
WO (1) WO1997045518A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0980418B1 (fr) * 1997-04-30 2004-06-30 Unilever Plc Composition detergente
US6743763B1 (en) * 2000-09-05 2004-06-01 Basf Corporation Stable aqueous laundry detergents containing vinyl pyrrolidone copolymers
JP4855140B2 (ja) * 2006-05-18 2012-01-18 花王株式会社 液体漂白洗浄剤組成物
JP5197949B2 (ja) * 2006-12-21 2013-05-15 ライオン株式会社 漂白剤物品
JP5342757B2 (ja) * 2007-07-26 2013-11-13 ライオン株式会社 液体漂白剤組成物
GB0902917D0 (en) * 2009-02-20 2009-04-08 Reckitt Benckiser Nv Composition
JP5795956B2 (ja) * 2011-12-21 2015-10-14 花王株式会社 液体洗浄剤組成物

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891147A (en) * 1988-11-25 1990-01-02 The Clorox Company Stable liquid detergent containing insoluble oxidant
WO1991012309A2 (fr) * 1990-02-08 1991-08-22 Unilever N.V. Composition de blanchissage liquide
US5264142A (en) * 1991-11-25 1993-11-23 Lever Brothers Company, Division Of Conopco, Inc. Stabilization of peroxygen bleach in enzyme-containing heavy duty liquids
MX9207050A (es) * 1991-12-19 1993-06-01 Ciba Geigy Ag Dispersion de blanqueador estable durante el almacenamiento
US5244593A (en) * 1992-01-10 1993-09-14 The Procter & Gamble Company Colorless detergent compositions with enhanced stability
GB9506065D0 (en) * 1995-03-24 1995-05-10 Warwick Int Group Alkaline isotropic liquid detergent with peroxide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9745518A1 *

Also Published As

Publication number Publication date
TR199802461T2 (xx) 1999-02-22
NO985541L (no) 1998-11-30
WO1997045518A1 (fr) 1997-12-04
GB9611063D0 (en) 1996-07-31
SK160298A3 (en) 1999-04-13
KR20000016075A (ko) 2000-03-25
BG102957A (en) 1999-09-30
AU2968897A (en) 1998-01-05
CA2252634A1 (fr) 1997-12-04
JP2001501646A (ja) 2001-02-06
IL126559A0 (en) 1999-08-17
CZ385398A3 (cs) 1999-06-16
CN1219962A (zh) 1999-06-16
PL330118A1 (en) 1999-04-26
ID17256A (id) 1997-12-11
BR9709384A (pt) 1999-08-10
TW381119B (en) 2000-02-01
NO985541D0 (no) 1998-11-27

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