EP1272602B2 - Water-softener in powdered form with an effervescent system - Google Patents

Water-softener in powdered form with an effervescent system Download PDF

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Publication number
EP1272602B2
EP1272602B2 EP01921578A EP01921578A EP1272602B2 EP 1272602 B2 EP1272602 B2 EP 1272602B2 EP 01921578 A EP01921578 A EP 01921578A EP 01921578 A EP01921578 A EP 01921578A EP 1272602 B2 EP1272602 B2 EP 1272602B2
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EP
European Patent Office
Prior art keywords
water
acid
perfume
effervescent system
softener
Prior art date
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Expired - Lifetime
Application number
EP01921578A
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German (de)
French (fr)
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EP1272602A1 (en
EP1272602B1 (en
Inventor
Paul Robinson
Manuela Bosco
Fabio Amiconi
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Reckitt Benckiser NV
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Reckitt Benckiser NV
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/0052—Gas evolving or heat producing compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005—Other compounding ingredients characterised by their effect
    • C11D3/001—Softening compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02—Inorganic compounds ; Elemental compounds
    • C11D3/04—Water-soluble compounds
    • C11D3/10—Carbonates ; Bicarbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • 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
    • C11D3/50—Perfumes

Definitions

  • the invention relates to a perfumed water-softener composition in powdered form which contains an effervescent system.
  • Cleaning agents and water-softener compositions often contain a perfume or perfume mixture, intended to impart a pleasant fragrance to items to be cleaned, such as laundry, and/or intended to release a fragrance that is pleasant to the user during the washing process, for example, when washing laundry by hand.
  • effervescent systems in detergent compositions - particularly these are in a tablet form - in order to accelerate dissolution in the washing water is known. Examples of this are described in WO98/46714 , WO98/45283 or WO98/04667 which compositions contain surfactants and/or bleaching agents.
  • the underlying objective of the invention is to improve water-softener compositions, preferably in powdered form (powder water softener compositions), so that they produce a perfume effect sustained for a long period during its use.
  • a water-softener composition preferably in powdered form, containing at least one perfume, the composition also containing an effervescent system.
  • the water-softening composition should be essentially free of any surfactant and bleaching agent.
  • the effervescent system contains at least one alkali metal carbonate and/or alkali hydrogen carbonate and at least one acidifying agent, the acidifying agent preferably containing at least one acid, most preferably an organic carboxylic acid.
  • the organic carboxylic acid is a fruit acid, preferably citric acid or malic acid.
  • the invention also relates to the use of an effervescent system, preferably one as described above, used in water-softener compositions, preferably in the form of a powder, containing at least one perfume, to improve the durability of the fragrance given off by this perfume.
  • the invention relates to the use of water-softener compositions, preferably in the form of a powder for applications involving manual laundering.
  • This effect can be regarded as positive with all conceivable water-softener compositions, it is of particular advantage for those in which the duration of the fragrancing effect of the perfume or the perfume mixture is particularly perceptible, i.e. in cases where the composition is deployed in such a way that the user is immediately aware of the perfume effect, such as when used for manual laundering, for example.
  • One particularly preferred application is the addition of an effervescent system to a water-softener composition in a powder form displaced with a fragrance for use in manual laundering, which is preferably added to the washing liquid prior to adding the actual washing agent, in order to enhance the cleansing effect. Tests to date have therefore mainly been conducted on compositions of this type.
  • the system comprising sodium hydrogen carbonate and citric acid
  • the effervescent system in the example described below, it would, of course, also be possible to consider other effervescent systems, in particular those containing other acids, such as polymeric acids or glycolic acid, lactic acid, etc. Tests have shown that the effervescent system as such is not critical to the described effect. On the contrary, there is considerable flexibility, which means that a selection can be made to suit specific circumstances for the use of the water-softening composition.
  • Preferred amounts of acidifying agent are present in the composition in the range of 0.51% w/w to 25% w/w, ideally 1% w/w to 20% w/w, preferably 2% w/w to 10% w/w and especially 2% w/w to 6% w/w.
  • a preferred acidifying agent is citric acid.
  • alkali metal carbonate and/or hydrogen carbonate are present in the composition in the range of 4% w/w to 70% w/w, ideally 15% w/w to 65% w/w, preferably 25% w/w to 60% w/w and especially 40% w/w to 58% w/w.
  • the water softening component of the composition may contain any known water softening compound or mixture, such as water soluble water-softening agent or a water-insoluble water-softening agent, notably alkali-metal aluminosilicate.
  • Water soluble water-softening agent may be organic or inorganic.
  • Inorganic may be present include alkali metal (generally sodium) carbonate; while organic include polycarboxylate polymers, such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphonates, monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono- di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates and hydroxyethyliminodiacetates.
  • polycarboxylate polymers such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphonates
  • monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono- di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates and hydroxyethyliminodiacetates.
  • composition contains only soluble water-softening agent, this may well be a salt of tripolyphosphate and/or ditric acid, such as the sodium salt, and/or a condensed phosphate.
  • Suitable crystalline sodium aluminosilicate ion-exchange detergency builders are described, for example, in GB 1429143 (Procter & Gamble).
  • the preferred sodium aluminosilicates of this type are the well known commercially available zeolites A and X, and mixtures thereof.
  • Also of interest is the novel zeolite P described and claimed in EP 384070 (Unilever).
  • water-insoluble material which can function as a water-softening agent is the layered sodium silicate builders disclosed in US-A-4464839 and US-A-4820439 and also referred to in EP-A-551375 .
  • water-soluble water-softening agent as described above, jointly with aluminosilicate, to enhance water-softening efficacy.
  • Such water-soluble soluble water-softening agent are generally used in an amount which is not greater than the amount of aluminosilicate, often less than half the amount of aluminosilicate.
  • Preferred amounts of the water-softening component are present in the composition in the range of 4% w/w to 65% w/w, ideally 15% w/w to 60% w/w, preferably 25% to 55% w/w and especially 35% w/w to 48% w/w.
  • the amount of perfume added to the composition is dependent upon the desired effect wanted to be achieved. Typical amounts may be from 0.05% w/w to 2% w/w.
  • composition is preferbly in the form of a powder, however other solid formulations are contemplated such as tablets, either made by compaction or by extruding.
  • Liquid formulations may also be used in which the ingredients may be suspended or dissolved in a nonaqueous liquid carrier medium, such liquid media include;
  • composition of samples I to IV is set out more specifically in Table I below.
  • Table I Sodium tripolyphosphate Sodium hydrogen carbonate Citric acid Fragrance I 42.53 44.88 12.00 0.12 II 42.53 50.88 6.00 0.12 III 42.53 53.88 3.00 0.12 IV 42.54 56.88 - 0.12

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Detergent Compositions (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Paints Or Removers (AREA)
  • Fats And Perfumes (AREA)

Abstract

Water-softener composition in powdered form containing at least one perfume, characterised in that the composition contains an effervescent system which is essentially free of surfactants and bleaching agents. The effervescent system may comprise on alkali metal carbonate and/or hydrogen carbonate plus an acid such as citric acid or malic acid.

Description

  • The invention relates to a perfumed water-softener composition in powdered form which contains an effervescent system.
  • Cleaning agents and water-softener compositions often contain a perfume or perfume mixture, intended to impart a pleasant fragrance to items to be cleaned, such as laundry, and/or intended to release a fragrance that is pleasant to the user during the washing process, for example, when washing laundry by hand.
  • The use of effervescent systems in detergent compositions - particularly these are in a tablet form - in order to accelerate dissolution in the washing water is known. Examples of this are described in WO98/46714 , WO98/45283 or WO98/04667 which compositions contain surfactants and/or bleaching agents.
  • The underlying objective of the invention is to improve water-softener compositions, preferably in powdered form (powder water softener compositions), so that they produce a perfume effect sustained for a long period during its use.
  • This objective is achieved by the invention, a water-softener composition, preferably in powdered form, containing at least one perfume, the composition also containing an effervescent system. The water-softening composition should be essentially free of any surfactant and bleaching agent.
  • Preferably, the effervescent system contains at least one alkali metal carbonate and/or alkali hydrogen carbonate and at least one acidifying agent, the acidifying agent preferably containing at least one acid, most preferably an organic carboxylic acid. In a more preferred embodiment, the organic carboxylic acid is a fruit acid, preferably citric acid or malic acid.
  • The invention also relates to the use of an effervescent system, preferably one as described above, used in water-softener compositions, preferably in the form of a powder, containing at least one perfume, to improve the durability of the fragrance given off by this perfume.
  • The invention relates to the use of water-softener compositions, preferably in the form of a powder for applications involving manual laundering.
  • Surprisingly, it has been found that adding an effervescent system to a water-softener composition produces a perfume effect which is sustained for a long period. This effect is particularly surprising since it has always been assumed that the perfuming substance will be dispelled significantly more rapidly due to the motion occurring in the washing liquid when using an effervescent system.
  • In addition we have found that the addition of a water-softening composition, which contains a perfume and no effervescent system, to a liquid wash containing a detergent with an effervescent system does not lead to a sustained perfume effect.
  • This effect can be regarded as positive with all conceivable water-softener compositions, it is of particular advantage for those in which the duration of the fragrancing effect of the perfume or the perfume mixture is particularly perceptible, i.e. in cases where the composition is deployed in such a way that the user is immediately aware of the perfume effect, such as when used for manual laundering, for example. One particularly preferred application, therefore, is the addition of an effervescent system to a water-softener composition in a powder form displaced with a fragrance for use in manual laundering, which is preferably added to the washing liquid prior to adding the actual washing agent, in order to enhance the cleansing effect. Tests to date have therefore mainly been conducted on compositions of this type. However, preliminary tests carried out on other water-softener compositions (e.g. for washing machines) have shown that the effect described above also occurs in a similar manner with these, i.e. essentially irrespective of what the rest of the composition of the water-softener might be.
  • Although the system comprising sodium hydrogen carbonate and citric acid is used as the effervescent system in the example described below, it would, of course, also be possible to consider other effervescent systems, in particular those containing other acids, such as polymeric acids or glycolic acid, lactic acid, etc. Tests have shown that the effervescent system as such is not critical to the described effect. On the contrary, there is considerable flexibility, which means that a selection can be made to suit specific circumstances for the use of the water-softening composition.
  • Preferred amounts of acidifying agent are present in the composition in the range of 0.51% w/w to 25% w/w, ideally 1% w/w to 20% w/w, preferably 2% w/w to 10% w/w and especially 2% w/w to 6% w/w. A preferred acidifying agent is citric acid.
  • Preferred amounts of alkali metal carbonate and/or hydrogen carbonate are present in the composition in the range of 4% w/w to 70% w/w, ideally 15% w/w to 65% w/w, preferably 25% w/w to 60% w/w and especially 40% w/w to 58% w/w.
  • The water softening component of the composition may contain any known water softening compound or mixture, such as water soluble water-softening agent or a water-insoluble water-softening agent, notably alkali-metal aluminosilicate. Water soluble water-softening agent may be organic or inorganic. Inorganic may be present include alkali metal (generally sodium) carbonate; while organic include polycarboxylate polymers, such as polyacrylates, acrylic/maleic copolymers, and acrylic phosphonates, monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono- di- and trisuccinates, carboxymethyloxysuccinates, carboxymethyloxymalonates, dipicolinates and hydroxyethyliminodiacetates.
  • If a composition contains only soluble water-softening agent, this may well be a salt of tripolyphosphate and/or ditric acid, such as the sodium salt, and/or a condensed phosphate.
  • It is very well known that water-insoluble alkali metal aluminosilicates can function to soften water, removing calcium ions and to a lesser extent magnesium ions by ion exchange. Aluminosilicates have become strongly favoured as environmentally acceptable detergency builders.
  • Suitable crystalline sodium aluminosilicate ion-exchange detergency builders are described, for example, in GB 1429143 (Procter & Gamble). The preferred sodium aluminosilicates of this type are the well known commercially available zeolites A and X, and mixtures thereof. Also of interest is the novel zeolite P described and claimed in EP 384070 (Unilever).
  • Another category of water-insoluble material which can function as a water-softening agent is the layered sodium silicate builders disclosed in US-A-4464839 and US-A-4820439 and also referred to in EP-A-551375 .
  • Quoted literature references describing the preparation of such materials include Glastechn. Ber. 37, 194-200 (1964), Zeitschrift fur Kristallogr. 129, 396-404 (1969), Bull. Soc. Franc. Min. Crist., 95, 371-382 (1972) and Amer. Mineral, 62, 763-771 (1977). These materials also function to remove calcium and magnesium ions from water.
  • It is customary to use a water-soluble water-softening agent, as described above, jointly with aluminosilicate, to enhance water-softening efficacy. Such water-soluble soluble water-softening agent are generally used in an amount which is not greater than the amount of aluminosilicate, often less than half the amount of aluminosilicate.
  • Preferred amounts of the water-softening component are present in the composition in the range of 4% w/w to 65% w/w, ideally 15% w/w to 60% w/w, preferably 25% to 55% w/w and especially 35% w/w to 48% w/w.
  • The amount of perfume added to the composition is dependent upon the desired effect wanted to be achieved. Typical amounts may be from 0.05% w/w to 2% w/w.
  • The composition is preferbly in the form of a powder, however other solid formulations are contemplated such as tablets, either made by compaction or by extruding. Liquid formulations may also be used in which the ingredients may be suspended or dissolved in a nonaqueous liquid carrier medium, such liquid media include;
    • Preferred Compositions
  • % w/w % w/w
    Na tripolyphosphate 40 - 44 41.5 - 42.6
    Na bicarbonate 50 - 55 52 - 54
    Citric acid 3 - 6 3.5 - 4.5
    Perfume 0.1 - 0.2 0.12 - 0.16
    • Example
  • Various samples of a water-softener composition, mainly consisting of sodium hydrogen carbonate and sodium tripolyphosphate, with the same content of fragrance were displaced with differing contents of citric acid, which produced the intended effervescent effect in conjunction with the sodium hydrogen carbonate.
  • The composition of samples I to IV is set out more specifically in Table I below. Table I
    Sodium tripolyphosphate Sodium hydrogen carbonate Citric acid Fragrance
    I 42.53 44.88 12.00 0.12
    II 42.53 50.88 6.00 0.12
    III 42.53 53.88 3.00 0.12
    IV 42.54 56.88 - 0.12
  • The perfume effect was evaluated for strength of fragrance by a test panel on a scale of 1 to 5, where 1 represents no perceptible fragrance and 5 a very strong fragrance. The same test panel was also asked to evaluate the duration of the fragrance in terms of two categories "short" and "long" The results are set out in Table II below. Table II
    Strength of fragrance Duration of fragrance
    I 5 long
    II 4.5 long
    III 2.5 long
    IV 1 short
  • The features of the invention as explained in the description above and defined in the claims may essentially be used individually or in any combination for the purposes of the invention and in their different embodiments.

Claims (6)

  1. Use of an effervescent system in water-softener compositions containing at least one perfume in order to improve the durability of the fragrancing effect of this perfume, wherein the water-softener composition is in powdered form and is essentially free of any surfactant and bleaching agent for applications involving manual laundering.
  2. Use as claimed in claim 1, characterised in that the effervescent system contains at least one alkali metal carbonate and/or hydrogen carbonate and at least one acidifying agent.
  3. Use as claimed in claim 2, characterised in that the acidifying agent contains at least one acid.
  4. Use as claimed in claim 3, characterised in that the acid is a carboxylic acid.
  5. Use as claimed in claim 4, characterised in that the fruit acid is citric acid or malic acid.
  6. Use as claimed in claim 1, wherein the water-softener composition comprises:
    1) 4% w/w to 65% w/w of a water-softening compound or mixture thereof;
    2) 4% w/w to 70% w/w of an alkali metal carbonate and/or hydrogen carbonate;
    3) 0.51% to 25% w/w of an acidifying agent;
    4) and a perfume.
EP01921578A 2000-04-14 2001-04-12 Water-softener in powdered form with an effervescent system Expired - Lifetime EP1272602B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10018570 2000-04-14
DE10018570 2000-04-14
PCT/GB2001/001679 WO2001079411A1 (en) 2000-04-14 2001-04-12 Water-softener in powdered form with an effervescent system

Publications (3)

Publication Number Publication Date
EP1272602A1 EP1272602A1 (en) 2003-01-08
EP1272602B1 EP1272602B1 (en) 2006-06-14
EP1272602B2 true EP1272602B2 (en) 2009-10-28

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EP01921578A Expired - Lifetime EP1272602B2 (en) 2000-04-14 2001-04-12 Water-softener in powdered form with an effervescent system

Country Status (7)

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EP (1) EP1272602B2 (en)
AT (1) ATE329996T1 (en)
AU (1) AU2001248552A1 (en)
DE (1) DE60120668T3 (en)
ES (1) ES2264977T5 (en)
GB (1) GB2364302B (en)
WO (1) WO2001079411A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008044016A1 (en) * 2006-10-14 2008-04-17 Reckitt Benckiser N.V. Composition

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EP1082957A1 (en) † 1999-09-09 2001-03-14 Gergely, Gerhard Effervescent granulate with delayed effervescence

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DE3512717A1 (en) † 1984-04-12 1985-10-31 Kao Corp., Tokio/Tokyo WEAK ACID BATH SALT COMPOSITION
EP0229616A2 (en) † 1986-01-08 1987-07-22 Kao Corporation Bath additive composition
EP0456315A2 (en) † 1990-05-08 1991-11-13 The Procter & Gamble Company Low pH granular laundry detergent compositions containing aluminosilicate citric acid and carbonate builders
WO1992018596A1 (en) † 1991-04-19 1992-10-29 The Procter & Gamble Company Granular laundry detergent compositions having improved solubility
EP0537584A1 (en) † 1991-10-12 1993-04-21 Henkel KGaA Tablet containing perfumes
DE4420735A1 (en) † 1994-06-15 1995-12-21 Allphamed Arzneimittel Gmbh Process for the production of mechanically stable, high-speed effervescent tablets
WO1998035011A1 (en) † 1997-02-06 1998-08-13 Henkel Kommanditgesellschaft Auf Aktien Use of additives containing co-builders in detergents and cleaning agents
US5993854A (en) † 1997-09-17 1999-11-30 Phyzz, Inc. Exothermic effervescent composition for improved fragrance dispersion
EP0922450A1 (en) † 1997-12-01 1999-06-16 Gerhard Dr. Gergely Effervescent preparation containing a plant extract
US5955057A (en) † 1998-06-12 1999-09-21 Biotech Holdings Ltd. Effervescing or foaming bath shape or solid
WO2000075079A1 (en) † 1999-06-05 2000-12-14 Herbst Juergen Method for dispersing insoluble mineral sediments and additives for carrying out this method
WO2000077150A1 (en) † 1999-06-10 2000-12-21 Henkel Kommanditgesellschaft Auf Aktien Effervescent tablets with a long shelf-life
EP1082957A1 (en) † 1999-09-09 2001-03-14 Gergely, Gerhard Effervescent granulate with delayed effervescence

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"Enzyklopädie Naturwissenschaft und Technik", vol. 1, part A-D 1979, VERLAG MODERNE INDUSTRIE, MÜNCHEN, article "Aromastoffe", pages: 268 †
"Römpp-Chemie-Lexikon", vol. 4, part M-PK 1991, GEORG THIEME VERLAG, STUTTGART, article "Natriumaluminate", pages: 2917 †
Priorutätsdokument DE 100 18 570 †

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WO2001079411A8 (en) 2002-02-14
ES2264977T5 (en) 2010-04-06
EP1272602A1 (en) 2003-01-08
ES2264977T3 (en) 2007-02-01
GB0109194D0 (en) 2001-05-30
ATE329996T1 (en) 2006-07-15
AU2001248552A1 (en) 2001-10-30
DE60120668D1 (en) 2006-07-27
DE60120668T2 (en) 2007-06-06
EP1272602B1 (en) 2006-06-14

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