AU719047B2 - Improvements in or relating to organic compositions - Google Patents
Improvements in or relating to organic compositions Download PDFInfo
- Publication number
- AU719047B2 AU719047B2 AU25171/97A AU2517197A AU719047B2 AU 719047 B2 AU719047 B2 AU 719047B2 AU 25171/97 A AU25171/97 A AU 25171/97A AU 2517197 A AU2517197 A AU 2517197A AU 719047 B2 AU719047 B2 AU 719047B2
- Authority
- AU
- Australia
- Prior art keywords
- composition
- hydrogen peroxide
- compositions
- surfactant
- viscosity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
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
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3726—Polyurethanes
-
- 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
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3707—Polyethers, e.g. polyalkyleneoxides
-
- 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
Description
IMPROVEMENTS IN OR RELATING TO ORGANIC COMPOSITIONS The present invention relates to thickened liquid organic compositions. The compositions of the invention are particularly, but not exclusively, suitable for the treatment of fabrics and more particularly fine or delicate fabrics.
In the washing of fabrics, in particular of clothes, it is known to use a whitening composition either separately (for example as a pre-wash composition) or as ooooo Spart of a detergent formulation. Most fabric whiteners have conventionally been provided in powder form and are generally based on percarbonates and/or perborates. A decomposition enhancer may also be included. Liquid 15 formulations are also known which are essentially oooo S: bleaching preparations based on hypochlorite compositions.
Such liquid formulations are not suitable for treatment of oeoo o fine or delicate fabrics because of the aggressive nature of the hypochlorite with regard to the fabric and the colour. In order to overcome the aggressive nature of the hypochlorite compositions, liquid compositions based on hydrogen peroxide have been suggested, since hydrogen peroxide has less aggressive properties and is less likely to damage fine or delicate fabrics or to deleteriously affect fabric colour.
WO 97/39098 PCT/GB97/01017 -2- However, a significant disadvantage of known fabric whiteners based on hydrogen peroxide occurs in that the compositions are not sufficiently stable.
Decomposition of the hydrogen peroxide readily occurs, for example because of the presence of even very small amounts of heavy metals or other impurities such as reducing agents, or because of increases in ambient temperature.
Attempts have been made to prepare fabric whitening compositions based on hydrogen peroxide which are also thickened to a desired viscosity. Thickened compositions provide advantages in use as compared with unthickened compositions and consumer preference for thickened products is well documented. For example, if the laundry composition is to be used as a pre-wash, a thickened composition is more easily applied directly onto difficult stains before the normal washing process without messy dripping. A thickened composition will also remain longer on the garment to which it is applied than an unthickened composition. Thickening of the composition also helps the user to control dispensing of the composition.
However, in addition to the premature decomposition of the hydrogen peroxide, as mentioned above, thickened compositions based on hydrogen peroxide present problems in that the viscosity of the compositions is not stable with time. As a consequence, liquid compositions based on hydrogen peroxide which are currently on the market are all believed to be simple WO 97/39098 PCT/GB97/01017 -3unthickened hydrogen peroxide solutions containing a low concentration of surfactant, generally of not more than 2% surfactant.
Prior art hydrogen peroxide bleaching/cleaning products have frequently been thickened by using a combination of surfactants which, in the presence of an electrolyte, act to thicken the solution so that it becomes more viscous than water. For example, GB 2286603 (Jeyes Group PLC) describes a thickened aqueous alkaline peroxide bleaching agent composition containing hydrogen peroxide, water, a stabliliser for the hydrogen peroxide, a water-soluble electolyte and a surfactant/thickening component comprising: i) an alkyl ether sulphate surfactant together with an amine oxide or betaine surfactant and, optionally, an alkane sulphonate surfactant; or ii) an amine oxide surfactant together with a sarcosinate surfactant and, optionally, an alkane sulphonate surfactant. However, the presence of an electrolyte tends to accelerate decomposition of alkaline hydrogen peroxide solutions.
GB 2273721 (Jeyes Group PLC) also describes a thickened bleach composition comprising an alkaline aqueous solution of hydrogen peroxide containing, as a thickening system, two different surfactants a cationic and anionic surfactant which interact to give the desired viscosity.
WO-A-95/09226 (Solvay Interox Limited) describes neutral or alkaline thickened aqueous hydrogen peroxide compositions, thickened with a polymeric thickener comprising a polyethylene backbone, pendant carboxyl groups and pendant alkoxylate groups, as defined therein.
EP-A-404293 describes a liquid laundry product which thickens in the acidic pH range by combination of an acrylic copolymer, and amphoteric surfactant or amine oxide, a soluble sulfonate, and optionally, a peroxide bleaching agent.
:oo: :e It has now surprisingly been found that thickened fabric treatment compositions based on hydrogen peroxide, in particular fabric whitener compositions, having satisfactory stability with regard to hydrogen peroxide decomposition and viscosity can be provided by employing an associative thickening agent as the thickening medium.
One advantage of the compositions of the present invention over the prior art surfactant-thickened compositions is that a smaller amount of active ingredients is needed to thicken the compositions to the desired viscosity.
The present invention provides a thickened liquid composition based on hydrogen peroxide which is sufficiently stable over time with respect to both viscosity and hydrogen peroxide decomposition.
In accordance with the present invention, there is provided a thickened liquid composition, the composition being of viscosity of from 30-30,000 mPas, and comprising: hydrogen peroxide, in an amount of from 3% to 12% w/w expressed as pure H 2 0 2 one or more surfactants; and an associative thickening agent in an amount of to 10% w/w; characterised in that the associative thickening agent is selected from a low to medium molecular weight dialkyl too- 25 polyglycol ether and a hydrophobically modified ethoxylated urethane.
By "thickened" compositions, we mean compositions of increased viscosity. Thickened compositions according to the invention are those which have a viscosity of from about 30 mPaS to 30,000 mPaS. For example, an appropriate viscosity for a pourable composition having the appearance of a thick liquid is a viscosity in the range of from about 30 to 600 mPas. More viscous liquids, for example with a viscosity of from 600 to 10 000 mPas or more are also within the scope of the invention. A preferred viscosity range in accordance with the present invention is 180 to 1500 mPas, and most preferably the viscosity of the compositions of the present invention is in the range 300 to 600 mPas. The viscosities of the compositions of the present invention are measured using a Brookfield Viscometer on a No.2 spindle at (ambient temperature) and at 10, 20 or 50 RPM. The S. appropriate RPM is chosen according to the viscosity of the composition being measured, as will be understood by those skilled in the art.
eI The associative thickening agents used in the S: invention are water-soluble or water-swellable polymers that have chemically attached hydrophobic groups that are capable of non-specific hydrophobic associations.
Preferably, the associative thickening agents utilized in 20 the present invention are non-ionic agents with hydrophobic and hydrophilic sequences which are effective over a wide pH range (pH 2-12). The hydrophobic parts of the thickener build up associations with the other hydrophobes present in the formulation. This allows the thickening agents to demonstrate a good synergistic thickening effect when used in conjunction with low watersoluble ingredients.
6 The associative thickening agents employed in the present invention will typically have a general structure similar to that illustrated in Figure 1. As can be seen from Figure 1, the structure of the preferred associative thickening agents generally resembles in shape a so-called barbell (or dumb-bell) structure or a comb structure.
Thus, the typical associative thickening agents in accordance with the invention will comprise a central hydrophilic portion and end portions which are hydrophobic. However, associative thickening agents having a central hydrophobic portion and end portions which are hydrophilic may be employed where appropriate.
The associative thickening agents may alternatively be fee *polymers having alternate hydrophilic and hydrophobic 15 portions.
As defined above, one class of suitable associative thickening agents for use in accordance with the present invention are low to medium molecular weight dialkyl polyglycol ethers. By low to medium molecular weight, we 20 mean compounds having a molecular weight ranging from a "-few hundred to tens of thousands. For example, particularly preferred associative thickening agents are dialkyl polyglycol ethers sold by Akzo under the tradenames DAPRAL T210 and DAPRAL T212, both of which have a molecular weight of about 8000. DAPRAL T210 is especially suitable because of its particular viscoelastic properties. Most preferably, a combination of both DAPRAL and DAPRAL T212 is used, which results in a composition with particularly desirable rheological properties.
Also as defined above, one further class of associate thickening agents suitable for use in accordance with the present invention are hydrophobically modified ethoxylated urethane thickeners, such as those available under the tradename Acrysol 880 from Rohm and Haas company. These are non-ionic polymers supplied as a solution in a water/butyl carbitol mixture. Neutralization of the solution is not necessary and it is effective over a broad pH range (pH 2-12).
The amount of associative thickening agent in the composition will vary in accordance with the desired viscosity and generally in an approximately inverse 15 relationship with respect to the amount of surfactant.
The associative thickening agent is preferably present in an amount of 0.5% to 10% w/w active ingredient, more preferably 1% to 4% w/w and especially 1.7% w/w.
The composition also includes a non-ionic surfactant 20 and/or an anionic surfactant. A soap may also be included. The non-ionic and anionic surfactants are desirably present, repsectively, in amount of 0.1% to w/w active ingredient, preferably 4% to 16% w/w.
The nonionic surfactant is particularly preferably present in an amount of 8% to 12% w/w active ingredient.
Most preferably, the compositon contains WO 97/39098 PCT/GB97/01017 -8about 10% w/w active ingredient non-ionic surfactant.
The choice of non-ionic surfactant is not limited and any suitable non-ionic surfactant may be used.
Preferred non-ionic surfactants include alkoxylated primary or secondary alcohols, alkylphenols, fatty acids and fatty acid amides, for example ethylene oxide and/or propylene oxide condensation products with fatty alcohols or alkylphenols. Other suitable non-ionic surfactants are alkyl polyglycosides and alkanol amides. Two particularly preferred non-ionic surfactants are ethoxylated fatty alcohols sold under the tradenames Lutensol A07 (available from BASF) and Synperonic A7 (available from ICI).
The anionic surfactant is particularly preferably present in an amount of 2% w/w active material. The choice of anionic surfactant is also not limited and any suitable anionic surfactant may be used.
Preferred anionic surfactants include alkyl (aryl) sulphates and sulphonates, alkyl (aryl) ethoxylated sulphates, alkyl ether sulphonates, olefin sulphonates, ethoxylated ester phosphates, sulphosuccinate derivatives, secondary alkane sulphonates and sodium or potassium salts of long chain fatty acids. A particularly preferred anionic surfactant is lauryl ether sulphate 3EO (having 3 moles of ethylene oxide) which is available under the tradename SIPON LES 328n from Sidobre Sinnova.
WO 97/39098 PCT/GB97/01017 -9- The choice of surfactant in the composition can depend on the material for which the composition is intended and on the type of soil on the fabric. For example, for use on wool, a greater quantity of non-ionic surfactant will give better detergency, whereas a lesser quantity of non-ionic surfactant and more anionic surfactant gives lower levels of detergency but greater fabric softness.
The concentration of hydrogen peroxide in the compositions of the invention, expressed as pure HA0 2 suitably lies in the range from 1% to 12% w/w, preferably 2% to 10% w/w and most preferably 3% to 8% w/w. In an especially preferred variation, the hydrogen peroxide is present in amount of about 7% w/w. Whilst the above quantities are absolute values, the hydrogen peroxide will commonly be used in the form of a 35% aqueous solution.
In addition to the components discussed above, optional ingredients may also be added to the compositions of the invention, generally in minor amounts, depending upon the purpose of use. These may include stabilising agents, for example the sodium salt of diethylene triamine penta acetic acid sold under the tradename Trilon C by BASF or phosphonates such as diethylene triamine penta(methylene phosphonic acid) sold under the tradename Dequest 2066 by Monsanto; pH adjusters such as citric acid; opacifying agents, for example vinyl WO 97/39098 PCT/GB97/01017 pyrrolidone styrene copolymers such as that supplied by ISP under the tradename GAFTEX 430; optical brighteners such as the distyryl biphenyl derivative sold under the tradename Tinopal CB by CIBA GEIGY and suitable fragrances. Other suitable optional ingredients will be well known to those skilled in the art.
The pH of the compositions of the invention is preferably within the range pH 1 to pH 12, particularly pH 2 to pH 7.5, especially pH 5.5. At higher pH, in excess of pH 7.5, the detergency of the composition can be improved. However, at such pH the stability of the hydrogen peroxide is reduced and decomposition may occur.
The compositions of the present invention may be used as pre-wash formulations and applied directly onto difficult stains before the normal washing process. The compositions are particularly suitable for such use as they possess sufficient thickness to remain on the stained area before laundering the garment. Alternatively, the composition of the present invention may be used as a booster as part of the detergent formulation in the main wash.
The compositions according to the invention may be made by simply mixing together measured amounts of the required constituents.
WO 97/39098 PCT/GB97/01017 -11- In order that the invention may be more fully understood, the following examples are given by way of illustration only. In the examples all percentages are by weight unless otherwise stated. Also, the ingredients are all 100% by weight actives, unless otherwise stated.
Example 1 A thickened hydrogen peroxide solution was prepared from the following ingredients.
Hydrogen peroxide Dapral T210 1.7% Trilon C Lutensol A07 10.0% Sodium lauryl ether 7.2% sulphate (28% active ingredient solution) Perfume 7.2% Demineralised water to 100% The composition was measured for viscosity using a Brookfield Viscometer on a No. 2 spindle and had a viscosity of 195 mPaS at 25 0 C (room temperature) and RPM. The pH of the composition was 5.1. After storage of the composition for 6 weeks at 40 0 C, the viscosity measurement was 205 mPaS at 250C and 20 RPM.
This indicated that the viscosity of the composition was stable with time. In addition, the composition WO 97/39098 PCT/GB97/01017 -12was also found to retain 98% of its hydrogen peroxide after 6 weeks of storage at 40 0
C.
Example 2 A thickened hydrogen peroxide solution was prepared from the following ingredients.
Hydrogen peroxide Acusol 880 4.3% Dequest 2066 Synperonic A7 Sodium lauryl ether sulphate (28% active ingredient solution) Demineralised water to 100% This composition had a viscosity of 1500 mPaS as measured at room temperature and 20 RPM on a Brookfield Viscometer on a No. 2 spindle. The composition had a pH of 5.3.
Example 3 A thickened hydrogen peroxide solution was prepared from the following ingredients.
Hydrogen peroxide Dapral T212 Dequest 2066 WO 97/39098 PCT/GB97/01017 -13- Lutensol A07 Sodium lauryl ether sulphate (28% active ingredient solution) Tinopal CB Fragrance Demineralised water 29.0% 0.4% 0.2% to 100% This composition had a viscosity of 1500 mPaS as measured at room temperature and 20 RPM on a Brookfield Viscometer on a No.2 spindle. The composition had a pH of 5.3.
Example 4 A thickened hydrogen peroxide solution was prepared from the following ingredients.
Hydrogen peroxide Dapral T212 Dequest 2066 Lutensol A07 Sodium lauryl ether sulphate (28% active ingredient solution) Fragrance Demineralised water 29.0% 0.2% to 100% This composition had a viscosity of 320 mPaS as measured at room temperature and 20 RPM on a WO 97/39098 PCT/GB97/01017 -14- Brookfield Viscometer on a No.2 spindle. The composition had a pH of pH 5.3.
Claims (4)
1. A thickened liquid composition, the composition being of viscosity of from 30-30,000 mPas, and comprising: hydrogen peroxide, in an amount of from 3% to 12% w/w expressed as pure H 2 02; one or more surfactants; and an associative thickening agent in an amount of to 10% w/w; characterised in that the associative thickening agent is selected from a low to medium molecular weight dialkyl polyglycol ether and a hydrophobically modified ethoxylated urethane.
2. A composition as claimed in claim 1, including an anionic surfactant. 15
3. A composition as claimed in claim 1 or 2, including a non-ionic surfactant.
4. A composition as claimed in any one of the preceding claims which contains 0.1% to 20% w/w surfactant. A method of treating a fabric, comprising delivery to 20 the fabric of a composition as claimed in any one of the f preceding claims. Dated this 22nd day of February 2000 RECKITT COLMAN FRANCE Patent Attorneys for the Applicant: F B RICE CO
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9607946 | 1996-04-17 | ||
GBGB9607946.2A GB9607946D0 (en) | 1996-04-17 | 1996-04-17 | Improvements in or relating to organic compositions |
PCT/GB1997/001017 WO1997039098A1 (en) | 1996-04-17 | 1997-04-14 | Fabric treatment composition containing thickened hydrogen peroxide solution |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2517197A AU2517197A (en) | 1997-11-07 |
AU719047B2 true AU719047B2 (en) | 2000-05-04 |
Family
ID=10792211
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU25171/97A Ceased AU719047B2 (en) | 1996-04-17 | 1997-04-14 | Improvements in or relating to organic compositions |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0897422A1 (en) |
AU (1) | AU719047B2 (en) |
BR (1) | BR9708692A (en) |
CA (1) | CA2251815A1 (en) |
GB (2) | GB9607946D0 (en) |
NZ (1) | NZ332349A (en) |
WO (1) | WO1997039098A1 (en) |
ZA (1) | ZA973172B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19822391A1 (en) * | 1998-05-19 | 1999-11-25 | Henkel Kgaa | High viscosity, aqueous, liquid, hydrogen peroxide-containing bleaching or pre-spotting agent |
DE19853845A1 (en) * | 1998-11-23 | 2000-05-25 | Henkel Kgaa | Viscous liquid aqueous bleach or laundry detergent concentrate containing hydrogen peroxide and surfactant is thickened with magnesium salt of mineral acid |
US20050106193A1 (en) * | 2003-11-17 | 2005-05-19 | Zofchak Albert A. | Ethoxylated polyurethane viscosity enhancers |
GB201403550D0 (en) * | 2014-02-28 | 2014-04-16 | Reckitt Benckiser Brands Ltd | Composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404293A2 (en) * | 1989-04-21 | 1990-12-27 | The Clorox Company | Thickened acidic liquid composition with sulfonate FWA |
WO1995009226A1 (en) * | 1993-09-28 | 1995-04-06 | Solvay Interox Limited | Thickened compositions |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1049482A (en) * | 1962-04-30 | 1966-11-30 | Laporte Chemical | Improvements in or relating to hydrogen peroxide |
US4130501A (en) * | 1976-09-20 | 1978-12-19 | Fmc Corporation | Stable viscous hydrogen peroxide solutions containing a surfactant and a method of preparing the same |
DE3732147A1 (en) * | 1987-09-24 | 1989-04-06 | Henkel Kgaa | EMULSION-SHAPED HYDROGEN PEROXIDE PREPARATIONS FOR BLONDING AND OXIDATIVE COLORING OF THE HAIR |
JPH0234695A (en) * | 1988-07-22 | 1990-02-05 | Kao Corp | Liquid detergent aid |
JP2602563B2 (en) * | 1989-12-15 | 1997-04-23 | 花王株式会社 | Liquid oxygen bleach composition |
GB2273721B (en) * | 1992-12-24 | 1996-05-01 | Jeyes Group Plc | Bleaches |
GB2286603B (en) * | 1994-02-14 | 1998-03-25 | Jeyes Group Plc | Bleach compositions |
-
1996
- 1996-04-17 GB GBGB9607946.2A patent/GB9607946D0/en active Pending
-
1997
- 1997-04-14 BR BR9708692-4A patent/BR9708692A/en not_active Application Discontinuation
- 1997-04-14 NZ NZ332349A patent/NZ332349A/en unknown
- 1997-04-14 WO PCT/GB1997/001017 patent/WO1997039098A1/en not_active Application Discontinuation
- 1997-04-14 EP EP97916553A patent/EP0897422A1/en not_active Ceased
- 1997-04-14 AU AU25171/97A patent/AU719047B2/en not_active Ceased
- 1997-04-14 CA CA002251815A patent/CA2251815A1/en not_active Abandoned
- 1997-04-14 GB GB9707532A patent/GB2312219A/en not_active Withdrawn
- 1997-04-15 ZA ZA9703172A patent/ZA973172B/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0404293A2 (en) * | 1989-04-21 | 1990-12-27 | The Clorox Company | Thickened acidic liquid composition with sulfonate FWA |
WO1995009226A1 (en) * | 1993-09-28 | 1995-04-06 | Solvay Interox Limited | Thickened compositions |
Also Published As
Publication number | Publication date |
---|---|
EP0897422A1 (en) | 1999-02-24 |
CA2251815A1 (en) | 1997-10-23 |
AU2517197A (en) | 1997-11-07 |
WO1997039098A1 (en) | 1997-10-23 |
NZ332349A (en) | 2000-05-26 |
BR9708692A (en) | 2000-01-04 |
ZA973172B (en) | 1997-11-14 |
GB9707532D0 (en) | 1997-06-04 |
GB2312219A (en) | 1997-10-22 |
GB9607946D0 (en) | 1996-06-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FGA | Letters patent sealed or granted (standard patent) | ||
PC | Assignment registered |
Owner name: RECKITT BENCKISER FRANCE Free format text: FORMER OWNER WAS: RECKITT AND COLMAN FRANCE |