WO2005080538A1 - Improved detergent composition and process - Google Patents

Improved detergent composition and process Download PDF

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Publication number
WO2005080538A1
WO2005080538A1 PCT/EP2005/000441 EP2005000441W WO2005080538A1 WO 2005080538 A1 WO2005080538 A1 WO 2005080538A1 EP 2005000441 W EP2005000441 W EP 2005000441W WO 2005080538 A1 WO2005080538 A1 WO 2005080538A1
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WIPO (PCT)
Prior art keywords
composition according
amount
composition
present
sodium
Prior art date
Application number
PCT/EP2005/000441
Other languages
French (fr)
Inventor
Kaushik Narotam Divecha
Ashim Kumar Dutta
Venkatesan Natarajan
Winston Anthony Pereira
Vivek Sirohi
Arvind Sunderrajan
Original Assignee
Unilever Plc
Unilever Nv
Hindustan Lever Limited
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.)
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Publication date
Application filed by Unilever Plc, Unilever Nv, Hindustan Lever Limited filed Critical Unilever Plc
Publication of WO2005080538A1 publication Critical patent/WO2005080538A1/en

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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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/825—Mixtures of compounds all of which are non-ionic
    • C11D1/8255—Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
    • 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
    • C11D11/0088—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 the liquefied ingredients being sprayed or adsorbed onto solid particles
    • 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
    • C11D11/02—Preparation in the form of powder by spray drying
    • 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
    • C11D3/06—Phosphates, including polyphosphates
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/1233—Carbonates, e.g. calcite or dolomite
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • 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
    • C11D3/12—Water-insoluble compounds
    • C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
    • C11D3/1246—Silicates, e.g. diatomaceous earth
    • C11D3/128—Aluminium silicates, e.g. zeolites
    • 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/72—Ethers of polyoxyalkylene glycols

Definitions

  • the present invention relates to a granular detergent composition for fabrics washing which provides for high cleaning efficiency at low cost and is especially suited for hand washing using hard water.
  • US 5518649 (Unilever, 1996) describes a free flowing detergent composition
  • a free flowing detergent composition comprising (i) 10 to 100% (anhydrous basis) of zeolite MAP and (ii) a liquid, viscous-liquid, oily or waxy detergent ingredient for example, a non-ioninc surfactant wherein the ratio of (ii) to (i) being at least 0.01 to 1.
  • a detergent composition comprising a non-ionic surfactant system comprising a C 8 to C 20 primary or secondary alcohol o ethoxylates with an average of 9 moles of ethylene oxide and a C 8 to C 20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide in specified ratios along with detergent builder compounds provide for synergistic cleaning benefits.
  • the compositions of the invention ensure enhanced utilization of the components used thereby ensuring low cost.5
  • a granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C 8 to C 2 o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C 8 to C 20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9.
  • a process for the preparation of a granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C 8 to C 20 primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and
  • the granular detergent composition is used in hand washing of fabrics.
  • the present invention provides for a detergent composition comprising builder and a non-ionic surfactant system.
  • Non-ionic surfactant system is N-ionic surfactant system
  • the non-ionic system comprises at least two non-ionic surfactants (A) a C 8 to C 2 o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C 8 to C 20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide.
  • the surfactants A and B are present in amounts in the ratio of A:B in the range of 9:1 to 1 :9, more preferably in the ratio in the range of 9:1 to 1 :3 and further more preferably in the range of 9:1 to 1 :2.
  • the non-ionic surfactant system is present in an amount of 5 to 30%, more preferably in the range of 8 to 25%, most preferably in the range of 10 to 20% by weight of the composition.
  • the composition according to the invention comprises one or more builders in an amount of 20 to 95%, preferably in an amount of 20 to 70%, more preferably in an amount of 20 to 55% by weight of the composition.
  • the builders are preferably selected from one or more of sodium carbonate, Zeolite 4A, sodium silicate and sodium tripolyphosphate. When sodium carbonate is used, it is preferred that it is dense soda ash. Soda ash is preferably used in an amount of 20 to 60%, more preferably in an amount of 22 to 55% and most preferably in an amount of 25 to 50% by weight of the composition.
  • zeolite 4A When zeolite 4A is used as a builder, it is preferred that it is used in an amount of 5 2 to 30%, more preferably in an amount of 5 to 25% and most preferably in an amount of 10 to 20% by weight of the composition.
  • sodium silicate When sodium silicate is used, it is preferred that it is alkaline sodium silicate. It is preferably used in an amount of 0.5 to 5%, more preferably in an amount of 1 to o 3% by weight of the composition.
  • the granular detergent composition of the invention may additionally comprise fillers like salt.
  • the preferred salts are sodium chloride and sodium sulphate, the most preferred being sodium sulphate.
  • the filler salts may be present in an o amount of 0.5 to 15% by weight of the composition.
  • Bleaches may be additionally used in the composition of the invention and the most preferred bleach is sodium sulphite. This may be used in the composition in an amount in the range of 0.5 to 5% by weight of the composition.5
  • Other optional ingredients that may be used in the composition to provide improved user properties include anti-redeposition agents, fluorescers or whitening agents, enzymes, and free flow agents.
  • the preferred free flow agents may be chosen from silica, zeolites, magnesium carbonate or calcite.
  • the most 0 preferred free flow agents are silica and zeolite.
  • the free flow agent is preferably present in an amount in the range of 0.5 to 15% by weight of the composition.
  • the preferred anti-redeposition agent may be chosen from sodium carboxymethyl cellulose, polyacrylates, or copolymers of polyacrylic acid and maleic acid.
  • the anti-redeposition agent is preferably present in an amount in the range of 0.2 to 5% by weight of the composition.
  • the granular detergent composition of the invention may be used for hand washing or machine washing of fabrics, it is preferred that the composition is used for hand washing of fabrics.
  • composition of the invention may comprise other types of surfactants e.g anionic, cationic, amphoteric or zwitterionic surfactant, it is preferred that any other surfactant, if present, is present in small amounts, preferably not more than 5% by weight of the composition. It is particularly preferred that the composition does not comprise any other type of surfactant especially anionic surfactants in addition to the non-ionic surfactant system.
  • surfactants e.g anionic, cationic, amphoteric or zwitterionic surfactant
  • any other surfactant if present, is present in small amounts, preferably not more than 5% by weight of the composition. It is particularly preferred that the composition does not comprise any other type of surfactant especially anionic surfactants in addition to the non-ionic surfactant system.
  • composition of the invention has a bulk density higher than 600 grams/liter.
  • a process for the preparation of a granular detergent composition comprising 5 to 30% of non-ionic surfactant system and 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C 8 to C 2 o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C 8 to C 2 o primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9 which process comprises the steps of (i) adding the non-ionic surfactant system to a part of the powders in a high shear mixer to granulate the mix followed by (ii) layering a part of the powders on to the granules.
  • the process may be carried out in a high-speed mixer/granulator having both a stirring action and a cutting action both of which can be independently controlled both for on-off action and for speed.
  • Suitable types of high shear mixers include the plough share mixers, the Fukae mixer and Lodige mixer.
  • the process to prepare the granular detergent composition of the invention may comprise the steps of (i) mixing the powders with the non-ionic system followed by (ii) drying the mixture in spray dryer.
  • compositions as given in Table- 1 were prepared as per the process described below.
  • the solid powders like soda ash, citric acid, sodium sulphate, sodium carboxymethyl cellulose (SCMC), and about 65% of the total amount of silica were taken in a plough share mixer.
  • Liquid non-ionic surfactant was then sprayed directly into the mixer for about 0.5 to 3 minutes with the mixer blades rotating at about 200 rpm.
  • the alkaline silicate was then added and mixed for a further 0.5 to 3 minutes.
  • the rest of the silica was then added with mixing followed by dosing of perfume and enzymes.
  • E03 refers to a primary alcohol with 12-14 carbon atoms ethoxylated with an average of 3 moles of ethylene oxide
  • E09 refers to a primary alcohol with 12-14 carbon atoms ethoxylated with an average of 9 moles of ethylene oxide
  • compositions were used to wash fabrics using the following procedure: The washing was conducted using a test monitor WFK20 obtained from WFK Inc. Germany. The liquor to cloth ratio was maintained at 100:1 and the test monitor was washed in hard water in which 3 grams per litre of the composition was dissolved. The test monitor was soaked for 30 minutes before washing in a tergotometer at 100 rpm at 30 °C temperature. The sample was then air dried and the reflectance (R) of the fabric before and after the wash was measured using a Gretag Macbeth Reflectometer from Macbeth Inc. The percentage detergency was calculated using the following formula:
  • Comparative Example-C A similar fabric was washed with one of the best commercially available formulation (Surf Excel) using the same wash procedure and the percentage detergency was found to be 64.1. In addition to providing improved cleaning, the cost of the compositions of the present invention (Examples 3 to 6) are lower (more than 8%lower) than the commercially available Surf Excel compositions.

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

Abstract

A granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C8 to C20 primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C8 to C20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1:9. A process for the preparation of said composition is also claimed.

Description

Improved Detergent Composition and Process
Technical field
The present invention relates to a granular detergent composition for fabrics washing which provides for high cleaning efficiency at low cost and is especially suited for hand washing using hard water.
Background and Prior art
There have been several prior art documents which describe granular detergent compositions and many such products are commercially available. There are also many such documents that describe use of non-ionic detergents. However, most of the commercially available commercial detergent compositions comprise largely the surfactants of the anionic type. This is due to the easy availability and low cost of these types of surfactants. While these surfactants have good cleaning ability, they perform poorly when washing fabrics in hard water conditions. This inefficiency is compensated by a combination of using higher amounts of surfactants and by use of high amounts of detergent builders. However, the question of the effective utilization of the anionic surfactants is still hotly debated. Non-ionic surfactants are known to perform better when fabrics are washed using them in hard water. There have been several documents which describe granular detergent compositions comprising non-ionic detergents.
US 5518649 (Unilever, 1996) describes a free flowing detergent composition comprising (i) 10 to 100% (anhydrous basis) of zeolite MAP and (ii) a liquid, viscous-liquid, oily or waxy detergent ingredient for example, a non-ioninc surfactant wherein the ratio of (ii) to (i) being at least 0.01 to 1.
US5789367 (Unilever, 1998) describes laundry detergent compositions comprising (a) 2 to 50% of one or more of any surfactant (b) 5 to 80% of a builder system comprising alkali metal aluminosilicate and (c) a soil release effective amount of a water soluble or water dispersible soil release polymer characterized in that the component (b) is zeolite MAP and component (c) comprises a non-end capped sulphonated polyester.
US4347152 (Colgate, 1982) describes a free flowing, phosphate free, particulate, heavy duty laundry detergent with a high bulk density having particles of sodium carbonate and sodium bicarbonate having a normally liquid or pasty nonionic detergent in the interiors and on the surface of such particles and coated with ion exchange zeolite particles.0 While the above prior arts describe laundry detergent compositions comprising non-ionic surfactants and builders like sodium carbonate, sodium bicarbonate and various zeolites, it does not teach that use of a non-ionic system comprising two selected non-ionic surfactants in specific ratio along with builders provides for5 superior cleaning while enabling the manufacture of such compositions at low cost.
The present inventors have now found that a detergent composition comprising a non-ionic surfactant system comprising a C8 to C20 primary or secondary alcohol o ethoxylates with an average of 9 moles of ethylene oxide and a C8 to C20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide in specified ratios along with detergent builder compounds provide for synergistic cleaning benefits. The compositions of the invention ensure enhanced utilization of the components used thereby ensuring low cost.5
Objects of the invention It is thus an object of the present invention to provide for a granular detergent o composition which provides for superior cleaning efficiency. It is another object of the present invention to provide for a granular detergent composition that can be prepared at low cost.
It is yet another object of the present invention to provide for a granular detergent composition that can be manufactured with existing equipments of the prior art with minimal modifications thereby ensuring high process efficiencies.
Summary of the Invention: According to one aspect of the invention, there is provided a granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C8 to C20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9.
According to another aspect of the invention, there is provided a process for the preparation of a granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C8 to C20 primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and
(B) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9 which process comprises the steps of (i) adding the non-ionic surfactant system to a part of the powders in a high shear mixer to granulate the mix followed by (ii) layering a part of the powders on to the granules.
It is particularly preferred that the granular detergent composition is used in hand washing of fabrics.
Detailed description of the invention:
The present invention provides for a detergent composition comprising builder and a non-ionic surfactant system.
Non-ionic surfactant system:
The non-ionic system comprises at least two non-ionic surfactants (A) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C8 to C20 primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide. The surfactants A and B are present in amounts in the ratio of A:B in the range of 9:1 to 1 :9, more preferably in the ratio in the range of 9:1 to 1 :3 and further more preferably in the range of 9:1 to 1 :2.
The non-ionic surfactant system is present in an amount of 5 to 30%, more preferably in the range of 8 to 25%, most preferably in the range of 10 to 20% by weight of the composition.
Builder:
The composition according to the invention comprises one or more builders in an amount of 20 to 95%, preferably in an amount of 20 to 70%, more preferably in an amount of 20 to 55% by weight of the composition. The builders are preferably selected from one or more of sodium carbonate, Zeolite 4A, sodium silicate and sodium tripolyphosphate. When sodium carbonate is used, it is preferred that it is dense soda ash. Soda ash is preferably used in an amount of 20 to 60%, more preferably in an amount of 22 to 55% and most preferably in an amount of 25 to 50% by weight of the composition.
When zeolite 4A is used as a builder, it is preferred that it is used in an amount of 5 2 to 30%, more preferably in an amount of 5 to 25% and most preferably in an amount of 10 to 20% by weight of the composition.
When sodium silicate is used, it is preferred that it is alkaline sodium silicate. It is preferably used in an amount of 0.5 to 5%, more preferably in an amount of 1 to o 3% by weight of the composition.
When sodium tripolyphosphate is used, it is preferred that it is used in an amount of 0.5 to 5% by weight of the composition. 5 Other Optional ingredients:
The granular detergent composition of the invention may additionally comprise fillers like salt. The preferred salts are sodium chloride and sodium sulphate, the most preferred being sodium sulphate. The filler salts may be present in an o amount of 0.5 to 15% by weight of the composition.
Bleaches may be additionally used in the composition of the invention and the most preferred bleach is sodium sulphite. This may be used in the composition in an amount in the range of 0.5 to 5% by weight of the composition.5 Other optional ingredients that may be used in the composition to provide improved user properties include anti-redeposition agents, fluorescers or whitening agents, enzymes, and free flow agents. The preferred free flow agents may be chosen from silica, zeolites, magnesium carbonate or calcite. The most 0 preferred free flow agents are silica and zeolite. The free flow agent is preferably present in an amount in the range of 0.5 to 15% by weight of the composition. The preferred anti-redeposition agent may be chosen from sodium carboxymethyl cellulose, polyacrylates, or copolymers of polyacrylic acid and maleic acid. The anti-redeposition agent is preferably present in an amount in the range of 0.2 to 5% by weight of the composition.
While the granular detergent composition of the invention may be used for hand washing or machine washing of fabrics, it is preferred that the composition is used for hand washing of fabrics.
While the composition of the invention may comprise other types of surfactants e.g anionic, cationic, amphoteric or zwitterionic surfactant, it is preferred that any other surfactant, if present, is present in small amounts, preferably not more than 5% by weight of the composition. It is particularly preferred that the composition does not comprise any other type of surfactant especially anionic surfactants in addition to the non-ionic surfactant system.
It is preferred that the composition of the invention has a bulk density higher than 600 grams/liter.
According to another aspect of the present invention there is provided a process for the preparation of a granular detergent composition comprising 5 to 30% of non-ionic surfactant system and 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9 which process comprises the steps of (i) adding the non-ionic surfactant system to a part of the powders in a high shear mixer to granulate the mix followed by (ii) layering a part of the powders on to the granules.
The process may be carried out in a high-speed mixer/granulator having both a stirring action and a cutting action both of which can be independently controlled both for on-off action and for speed. Suitable types of high shear mixers include the plough share mixers, the Fukae mixer and Lodige mixer. Alternately, the process to prepare the granular detergent composition of the invention may comprise the steps of (i) mixing the powders with the non-ionic system followed by (ii) drying the mixture in spray dryer.
The invention will now be illustrated with the help of the following non-limiting examples:
EXAMPLES Compositions as given in Table- 1 were prepared as per the process described below. The solid powders like soda ash, citric acid, sodium sulphate, sodium carboxymethyl cellulose (SCMC), and about 65% of the total amount of silica were taken in a plough share mixer. Liquid non-ionic surfactant was then sprayed directly into the mixer for about 0.5 to 3 minutes with the mixer blades rotating at about 200 rpm. The alkaline silicate was then added and mixed for a further 0.5 to 3 minutes. The rest of the silica was then added with mixing followed by dosing of perfume and enzymes. Table -1
Figure imgf000008_0001
Figure imgf000009_0001
E03 refers to a primary alcohol with 12-14 carbon atoms ethoxylated with an average of 3 moles of ethylene oxide E09 refers to a primary alcohol with 12-14 carbon atoms ethoxylated with an average of 9 moles of ethylene oxide
The compositions were used to wash fabrics using the following procedure: The washing was conducted using a test monitor WFK20 obtained from WFK Inc. Germany. The liquor to cloth ratio was maintained at 100:1 and the test monitor was washed in hard water in which 3 grams per litre of the composition was dissolved. The test monitor was soaked for 30 minutes before washing in a tergotometer at 100 rpm at 30 °C temperature. The sample was then air dried and the reflectance (R) of the fabric before and after the wash was measured using a Gretag Macbeth Reflectometer from Macbeth Inc. The percentage detergency was calculated using the following formula:
(K/S) = (100-R)2 / 200 R %detergency = [(K/S)sampie - (K/S)SOιiβd] / [(K/S)initiai - (K/S)SOiied] * 100
The results of the percentage detergency are given in Table-2. Table-2
Figure imgf000010_0001
Data in Table-1 indicates that there is synergistic improvement in washing efficiency when the specific mix of surfactants are used in the specified ratios.
EXAMPLES 3 TO 6 Compositions as per Table-3 were prepared using a process as described above along with the data on detergency determined as per the procedure described earlier.
Figure imgf000010_0002
Comparative Example-C A similar fabric was washed with one of the best commercially available formulation (Surf Excel) using the same wash procedure and the percentage detergency was found to be 64.1. In addition to providing improved cleaning, the cost of the compositions of the present invention (Examples 3 to 6) are lower (more than 8%lower) than the commercially available Surf Excel compositions.

Claims

We Claim:
1. A granular detergent composition comprising (i) 5 to 30% of non-ionic surfactant system and (ii) 20 to 95% builder wherein the non-ionic surfactant system comprises (A) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 9 moles of ethylene oxide and (B) a C8 to C2o primary or secondary alcohol ethoxylates with an average of 3 moles of ethylene oxide such that the ratio of A:B is the range of 9:1 to 1 :9.
2. A composition according to claim 1 wherein the ratio of A:B is in the range of 9:1 to 1 :3.
3. A composition according to claim 2 wherein the ratio of A:B is in the range of 9:1 to 1 :2.
4. A composition according to any of claims 1 to 3 wherein the non-ionic surfactant system is present in an amount of 8 to 25%.
5. A composition according to claim 4 wherein the non-ionic surfactant system is present in an amount of 10 to 20%.
6. A composition according to any of claims 1 to 5 wherein the builder is present in an amount of 20 to 70%.
7. A composition according to claim 6 wherein the builder is present in an amount of 20 to 55%.
8. A composition according to any of claims 1 to 7 wherein the builder is chosen from one or more of sodium carbonate, Zeolite 4A, sodium silicate or sodium tripolyphosphate.
5 9. A composition according to claim 8 wherein the sodium carbonate is dense soda ash.
10. A composition according to claim 8 or 9 wherein the sodium carbonate is present in an amount of 20 to 60% by weight of the composition.0
11. A composition according to claim 10 wherein the sodium carbonate is present in an amount of 22 to 55% by weight of the composition.
12. A composition according to claim 11 wherein the sodium carbonate is present5 in an amount of 25 to 50% by weight of the composition.
13. A composition according to claim 8 wherein Zeolite4A is present in an amount of 2 to 30% by weight of the composition.
0 14. A composition according claim 13 wherein Zeolite4A is present in an amount of 5 to 25% by weight of the composition.
15. A composition according claim 14 wherein Zeolite4A is present in an amount of 10 to 20% by weight of the composition.5
16. A composition according to claim 8 wherein sodium silicate is present in an amount of 0.5 to 5% by weight of the composition.
17. A composition according to claim 16 wherein sodium silicate is present in an o amount of 1 to 3% by weight of the composition.
18. A composition according to any of claims 8, 16 or 17 wherein sodium silicate is alkaline sodium silicate.
19. A composition according to claim 8 wherein sodium tripolyphosphate is present in an amount of 0.5 to 5%.
20. A composition according to any of claims 1 to 19 additionally comprising sodium sulphate.
21. A composition according to claim 20 wherein sodium sulphate is present in an amount of 0.5 to 15%.
22. A composition according to any of claims 1 to 21 additionally comprising a bleaching agent.
23. A composition according to claim 22 wherein the bleaching agent is sodium sulphite.
24. A composition according to claim 23 wherein sodium sulphite is present in an amount of 0.5 to 5% by weight of the composition.
25. A composition according to any of claims 1 to 24 additionally comprising one or more of a flow aid, an anti-redeposition agent, a fluorescer or an enzyme.
26. A composition according to claim 25 wherein the flow aid is silica.
27. A composition according to claim 26 wherein the silica is present in an amount of 0.5 to 15%.
28. A composition according to any of claims 1 to 17 wherein the anti-redeposition agent is sodium carboxy methyl cellulose.
29. A composition according to claim 28 wherein sodium carboxy methyl cellulose 5 is present in an amount of 0.2 to 5%.
30. A composition according to any of claims 1 to 29 for hand washing of fabrics.
31. A composition according to any of claims 1 to 30 which does not have any o surfactant of the anionic type.
32. A composition according to any of claims 1 to 31 wherein the bulk density of the composition is higher than 600 g/l. 5 33. A process for the preparation of a composition according to any of claims 1 to 32 comprising the steps of (i) adding the non-ionic surfactant system to the powders in a high shear mixer to granulate the mix followed by (ii) layering a part of the powders on to the granules.
0 34. A process for the preparation of a composition according to any of claims 1 to 32 comprising the steps of (i) mixing the powders with the non-ionic system followed by (ii) drying the mixture in spray dryer.
5
0
PCT/EP2005/000441 2004-02-25 2005-01-13 Improved detergent composition and process WO2005080538A1 (en)

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IN0226/MUM/2004 2004-02-25

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013107579A1 (en) * 2012-01-18 2013-07-25 Henkel Ag & Co. Kgaa Washing, cleaning or pre-treatment agent with increased cleaning power
WO2014095540A1 (en) * 2012-12-17 2014-06-26 Henkel Ag & Co. Kgaa Detergent and cleaning agent with polyalkoxylated polyamine and adjusted non-ionic surfactant
WO2014195215A1 (en) * 2013-06-03 2014-12-11 Henkel Ag & Co. Kgaa Washing, cleaning or pretreatment agent having increased cleaning power iii
WO2014195216A1 (en) * 2013-06-03 2014-12-11 Henkel Ag & Co. Kgaa Washing, cleaning or pretreatment agent having increased cleaning power iv
US11466232B2 (en) 2016-10-31 2022-10-11 Sabic Global Technologies B.V. Formula for superior detergency and anti re-deposition benefit
WO2024088878A1 (en) * 2022-10-24 2024-05-02 Unilever Ip Holdings B.V. Spray-dried laundry particle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2303850A1 (en) * 1975-03-10 1976-10-08 Rhone Poulenc Ind Surfactant compsns. contg. ethoxylated alcohols - with the lower alcohol having lower ethoxylation degree than the higher alcohol
GB1580047A (en) * 1976-04-23 1980-11-26 Unilever Ltd Process for preparing detergent compositions
US4347152A (en) * 1976-12-02 1982-08-31 Colgate-Palmolive Company Phosphate-free concentrated particulate heavy duty laundry detergent
EP0164072A2 (en) * 1984-06-06 1985-12-11 Henkel Kommanditgesellschaft auf Aktien Washing agent with intensified washing power
WO1995024461A1 (en) * 1994-03-11 1995-09-14 Unilever Plc Detergent composition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2303850A1 (en) * 1975-03-10 1976-10-08 Rhone Poulenc Ind Surfactant compsns. contg. ethoxylated alcohols - with the lower alcohol having lower ethoxylation degree than the higher alcohol
GB1580047A (en) * 1976-04-23 1980-11-26 Unilever Ltd Process for preparing detergent compositions
US4347152A (en) * 1976-12-02 1982-08-31 Colgate-Palmolive Company Phosphate-free concentrated particulate heavy duty laundry detergent
EP0164072A2 (en) * 1984-06-06 1985-12-11 Henkel Kommanditgesellschaft auf Aktien Washing agent with intensified washing power
WO1995024461A1 (en) * 1994-03-11 1995-09-14 Unilever Plc Detergent composition

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013107579A1 (en) * 2012-01-18 2013-07-25 Henkel Ag & Co. Kgaa Washing, cleaning or pre-treatment agent with increased cleaning power
WO2014095540A1 (en) * 2012-12-17 2014-06-26 Henkel Ag & Co. Kgaa Detergent and cleaning agent with polyalkoxylated polyamine and adjusted non-ionic surfactant
US9587204B2 (en) 2012-12-17 2017-03-07 Henkel Ag & Co. Kgaa Detergent and cleaning agent with polyalkoxylated polyamine and adjusted non-ionic surfactant
WO2014195215A1 (en) * 2013-06-03 2014-12-11 Henkel Ag & Co. Kgaa Washing, cleaning or pretreatment agent having increased cleaning power iii
WO2014195216A1 (en) * 2013-06-03 2014-12-11 Henkel Ag & Co. Kgaa Washing, cleaning or pretreatment agent having increased cleaning power iv
US11466232B2 (en) 2016-10-31 2022-10-11 Sabic Global Technologies B.V. Formula for superior detergency and anti re-deposition benefit
WO2024088878A1 (en) * 2022-10-24 2024-05-02 Unilever Ip Holdings B.V. Spray-dried laundry particle

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