WO1996024655A1 - Light duty cleaning compositions - Google Patents

Light duty cleaning compositions Download PDF

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Publication number
WO1996024655A1
WO1996024655A1 PCT/EP1996/000266 EP9600266W WO9624655A1 WO 1996024655 A1 WO1996024655 A1 WO 1996024655A1 EP 9600266 W EP9600266 W EP 9600266W WO 9624655 A1 WO9624655 A1 WO 9624655A1
Authority
WO
WIPO (PCT)
Prior art keywords
alkyl
sulphate
total
alkyl ether
ether sulphate
Prior art date
Application number
PCT/EP1996/000266
Other languages
French (fr)
Inventor
Giuseppe Bolzoni
Robert Michael Butterworth
Original Assignee
Unilever Plc
Unilever N.V.
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 Unilever Plc, Unilever N.V. filed Critical Unilever Plc
Priority to EP96901325A priority Critical patent/EP0808355A1/en
Priority to AU45389/96A priority patent/AU714639B2/en
Priority to BR9607501A priority patent/BR9607501A/en
Publication of WO1996024655A1 publication Critical patent/WO1996024655A1/en

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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66—Non-ionic compounds
    • C11D1/83—Mixtures of non-ionic with anionic 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
    • C11D1/146—Sulfuric acid esters
    • 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
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • 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
    • 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
    • C11D1/75—Amino oxides
    • 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
    • C11D1/88—Ampholytes; Electroneutral 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines
    • 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
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/92—Sulfobetaines ; Sulfitobetaines

Definitions

  • the present invention relates to light duty cleaning compositions. Such compositions find particular utility in hand dishwashing processes.
  • EP 0181212 discloses a liquid detergent composition which comprises 4-20% of alkyl sulphate, 5-24% alkyl ether sulphate and 5-20% alkyl benzene sulphonate as the anionic surfactants, magnesium ions, 1-10% of an ethoxylated alcohol nonionic surfactant and 0.25-10%wt of a betaine.
  • Alkyl sulphate will be present in alkyl ether sulphate as obtained from commercial sources. Typical levels of alkyl sulphate in alkyl ether sulphate (3EO) are generally 15- 20%, whereas higher ethoxylates contain less alkyl sulphate. Commercially available alkyl ether sulphate (1EO) comprises some 38-44% alkyl sulphate.
  • the anionic surfactant can be viewed as a mixture of the alkyl benzene sulphonate and an alkyl ether sulphate prepared with low levels of ethoxylation in a typical ratio of at least 1:5.
  • acceptable light duty cleanin formulations particularly suitable for hand-dishwashing, can prepared without or with low levels of alkyl benzene sulphonate and with low levels of alcohol.
  • an aqueous, light duty cleaning composition comprising:
  • the level of alkyl benzene sulphonate in the composition is such that the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alkyl benzene sulphonate is greater than 4:1.
  • the total of alkyl sulphate and alkyl ether sulphate (a) has an average ethoxylation value of less than 2.
  • Suitable average alkyl chain lengths are C 8 -C 16 , with lauryl being particularly preferred.
  • the alcohol ethoxylate (b) has a calculated H B of 10-20.
  • Suitable alkyl chain lengths range from C 8 - C 16 with C 10 -C n being particularly preferred.
  • the preferred degree of ethoxylation is such that the EO value is above 5, more preferably 7-15, most preferably 10.
  • amphoteric (c) is selected from the group comprising amine oxide, betaines and mixtures thereof.
  • a ido propyl betaines are particularly preferred. Typical levels of betaine range from l-5%wt. It is preferred that the overall level of amphoteric is above 1.5%wt.
  • Typical magnesium sources include sulphates at levels of 0.5-3%.
  • Typical ethanol levels are such that the composition comprises not more than 2%wt ethanol.
  • the compositions particularly those having less than 20% total anionic surfactant present, are essentially free of ethanol.
  • ethanol levels of around l%wt are preferred.
  • compositions according to the present invention conveniently comprise 0.5-3%wt of an C 8 -C 14 alkyl monoethanola ide, more preferably 0.9-2.0%wt of lauryl monoethanolamide.
  • compositions comprise 0.05-0.5% citric aci monohydrate as a buffer, 0.1-l%wt perfume and/or further minors selected from preservatives, lemon-juice and dyestuffs.
  • compositions comprise 10-14%wt or 20-27%wt in total of alkyl ether sulphate or alkyl sulphate: the lower levels being used for dilute compositions and the higher levels being used for concentrates.
  • the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the betaine is 6-8:1,and the ratio of the alkyl ether sulphate and alkyl sulphate to the total ethoxylated nonionic surfactants present is also 6-8:1.
  • the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the betai is 3-5:1 and the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the total ethoxylated nonionic surfactants present is 2-4:1.
  • the ratios of the total anionic actives to the betaine and the ethoxylated nonionics i.e. the anionics comprise alkyl ether sulpha and alkyl sulphate substantially free of other anionic surfactant species.
  • compositions were prepared with formulations as shown in table 1 below.
  • AES lauryl ether sulphate with an average degree of ethoxylation of 1
  • Betaine is lauryl amido propyl betaine
  • LMEA lauryl monoethanolamide
  • Nonionic is C u/12/13 alcohol ethoxylate 10EO.
  • the minors were preservative, dyestuffs and lemon juice.
  • Example 1 Example 2 dilute cone dilute cone

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)
  • Detergent Compositions (AREA)

Abstract

The invention provides an aqueous, light duty cleaning composition comprising: a) 10-30 % wt in total of alkyl ether sulphate and alkyl sulphate; b) at least 1 % wt alcohol ethosylate, wherein the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alcohol ethoxylate in the composition is at least 3:1 and not more than 10:1; c) at least 1.5 % wt of at least one amphoteric surfactant, wherein the weight ratio of the total of alkyl ether sulphate and alkyl ether sulphate (a) to said amphoteric is >3:1 and not more than 10:1; d) at least 0.5 % wt of a water-soluble magnesium salt, and; e) less than 4 % ethanol, wherein the level of alkyl benzene sulphonate in the composition is such that the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alkyl benzene sulphonate is greater than 4:1.

Description

LIGHT DUTY CLEANING COMPOSITIONS
Technical Field
The present invention relates to light duty cleaning compositions. Such compositions find particular utility in hand dishwashing processes.
Bac-cσround to the Invention
It is well known to formulate light duty cleaning compositions, suitable for use as dishwashing compositions, with alkyl ether sulphate and other anionic surfactants, magnesium, nonionic surfactants and zwitterionic surfactants.
EP 0181212 (P&G: 1985) discloses a liquid detergent composition which comprises 4-20% of alkyl sulphate, 5-24% alkyl ether sulphate and 5-20% alkyl benzene sulphonate as the anionic surfactants, magnesium ions, 1-10% of an ethoxylated alcohol nonionic surfactant and 0.25-10%wt of a betaine.
Alkyl sulphate will be present in alkyl ether sulphate as obtained from commercial sources. Typical levels of alkyl sulphate in alkyl ether sulphate (3EO) are generally 15- 20%, whereas higher ethoxylates contain less alkyl sulphate. Commercially available alkyl ether sulphate (1EO) comprises some 38-44% alkyl sulphate. Thus, in the above-mentioned document the anionic surfactant can be viewed as a mixture of the alkyl benzene sulphonate and an alkyl ether sulphate prepared with low levels of ethoxylation in a typical ratio of at least 1:5. In the above-mentioned patent, a poor product is said to be obtained if alkyl benzene sulphonate is eliminated fro the formulation. However, in recent years alkyl benzene sulphonate has come under increasing environmental pressure and it is often desirable to remove it from products.
Brief Description of the nvention
We have now determined that acceptable light duty cleanin formulations, particularly suitable for hand-dishwashing, can prepared without or with low levels of alkyl benzene sulphonate and with low levels of alcohol.
Detailed Description of the Invention
Accordingly, the present invention provides an aqueous, light duty cleaning composition comprising:
a) 10-30%wt in total of alkyl ether sulphate and alkyl sulphate,
b) at least l%wt alcohol ethoxylate, wherein the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alcohol ethoxylate in the compositio is at least 3:1 and not more than 10:1,
c) at least 1.5%wt of at least one amphoteric surfactant, wherein the weight ratio of the total of alkyl ether sulphate and alkyl ether sulphate (a) to said amphoteric is >3:1 and not more than 10:1,
d) at least 0.5%wt of a water-soluble magnesium salt, e) less than 4% ethanol,
wherein the level of alkyl benzene sulphonate in the composition is such that the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alkyl benzene sulphonate is greater than 4:1.
Typically, the total of alkyl sulphate and alkyl ether sulphate (a) has an average ethoxylation value of less than 2. Suitable average alkyl chain lengths are C8-C16, with lauryl being particularly preferred.
Preferably, the alcohol ethoxylate (b) has a calculated H B of 10-20. Suitable alkyl chain lengths range from C8- C16 with C10-Cn being particularly preferred. The preferred degree of ethoxylation is such that the EO value is above 5, more preferably 7-15, most preferably 10.
Preferably, the amphoteric (c) is selected from the group comprising amine oxide, betaines and mixtures thereof.
A ido propyl betaines are particularly preferred. Typical levels of betaine range from l-5%wt. It is preferred that the overall level of amphoteric is above 1.5%wt.
Typical magnesium sources include sulphates at levels of 0.5-3%.
Typical ethanol levels are such that the composition comprises not more than 2%wt ethanol. Preferably the compositions, particularly those having less than 20% total anionic surfactant present, are essentially free of ethanol. In concentrated compositions ethanol levels of around l%wt are preferred.
Compositions according to the present invention conveniently comprise 0.5-3%wt of an C8-C14 alkyl monoethanola ide, more preferably 0.9-2.0%wt of lauryl monoethanolamide.
Other optional ingredients comprise 0.05-0.5% citric aci monohydrate as a buffer, 0.1-l%wt perfume and/or further minors selected from preservatives, lemon-juice and dyestuffs.
Particularly preferred compositions comprise 10-14%wt or 20-27%wt in total of alkyl ether sulphate or alkyl sulphate: the lower levels being used for dilute compositions and the higher levels being used for concentrates.
In one preferred set of compositions, the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the betaine is 6-8:1,and the ratio of the alkyl ether sulphate and alkyl sulphate to the total ethoxylated nonionic surfactants present is also 6-8:1. In another preferred set of compositions the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the betai is 3-5:1 and the ratio of the total of the alkyl ether sulphate and alkyl sulphate to the total ethoxylated nonionic surfactants present is 2-4:1. It is preferable that these ratios hold true for the ratios of the total anionic actives to the betaine and the ethoxylated nonionics, i.e. the anionics comprise alkyl ether sulpha and alkyl sulphate substantially free of other anionic surfactant species.
In order that the present invention can be further understood it will be illustrated hereinafter by referen to examples. Examples
Four compositions were prepared with formulations as shown in table 1 below. In the table AES is lauryl ether sulphate with an average degree of ethoxylation of 1, Betaine is lauryl amido propyl betaine, LMEA is lauryl monoethanolamide, and Nonionic is Cu/12/13 alcohol ethoxylate 10EO. The minors were preservative, dyestuffs and lemon juice.
TABLE 1
Example 1 Example 2 dilute cone dilute cone
AES 13.3 26.6 10.3 20.6
Betaine 1.9 3.8 2.5 4.9
LMEA 1 2 0.9 3.8
Nonionic 1.8 3.6 3.3 6.6
Total (%AD) 18 36 17 35.9
Mg-sulphate 1 2 1 2 (7H20)
Ethanol - <1 - <1
Perfume 0.3 0.5 0.3 0.5
Citric Acid 0.1 0.2 0.1 0.2
Minors tr tr tr tr
Water - t-r> ι πnft
These products were evaluated as hand dishwashing compositions and found to have acceptable cleaning and grease-cutting properties.

Claims

1) Aqueous, light duty cleaning composition comprising:
a) 10-30%wt in total of alkyl ether sulphate and alkyl sulphate,
b) at least l%wt alcohol ethoxylate, wherein the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alcohol ethoxylate in the composition is at least 3:1 and not more than 10:1,
c) at least 1.5%wt of at least one amphoteric surfactant, wherein the weight ratio of the total of alkyl ether sulphate and alkyl ether sulphate (a) to said amphoteric is >3 : 1 and not more than 10:1,
d) at least 0.5%wt of a water soluble magnesium salt, and,
e) less than 4% ethanol,
wherein the level of alkyl benzene sulphonate in the composition is such that the weight ratio of the total of alkyl ether sulphate and alkyl sulphate (a) to alkyl benzene sulphonate is greater than 4:1.
2) Composition according to claim 1 wherein the total alkyl sulphate and alkyl ether sulphate (a) has an average ethoxylation value of less than 2.
3) Composition according to claim 1 wherein the alcohol ethoxylate (b) has a calculated HLB of 10-20. 4) Composition according to claim 1 wherein the amphoteric (c) is selected from the group comprising amine oxide, betaines and mixtures thereof.
PCT/EP1996/000266 1995-02-09 1996-01-16 Light duty cleaning compositions WO1996024655A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP96901325A EP0808355A1 (en) 1995-02-09 1996-01-16 Light duty cleaning compositions
AU45389/96A AU714639B2 (en) 1995-02-09 1996-01-16 Light duty cleaning compositions
BR9607501A BR9607501A (en) 1995-02-09 1996-01-16 Aqueous cleaning compositions for light tasks

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9502494.9A GB9502494D0 (en) 1995-02-09 1995-02-09 Light duty cleaning compositions
GB9502494.9 1995-02-09

Publications (1)

Publication Number Publication Date
WO1996024655A1 true WO1996024655A1 (en) 1996-08-15

Family

ID=10769303

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/000266 WO1996024655A1 (en) 1995-02-09 1996-01-16 Light duty cleaning compositions

Country Status (9)

Country Link
EP (1) EP0808355A1 (en)
AR (1) AR000891A1 (en)
AU (1) AU714639B2 (en)
BR (1) BR9607501A (en)
CA (1) CA2211318A1 (en)
GB (1) GB9502494D0 (en)
HU (1) HUP9900305A3 (en)
WO (1) WO1996024655A1 (en)
ZA (1) ZA96735B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005745A2 (en) * 1996-08-08 1998-02-12 Colgate-Palmolive Company Light duty liquid cleaning compositions
EP0854182A2 (en) * 1997-01-16 1998-07-22 Robert McBride Ltd Detergent formulation
US6759382B2 (en) 2001-06-01 2004-07-06 Kay Chemical, Inc. Detergent composition containing a primary surfactant system and a secondary surfactant system, and a method of using the same
EP2757145B1 (en) 2013-01-21 2018-01-10 The Procter & Gamble Company Detergent

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181212A1 (en) * 1984-11-07 1986-05-14 The Procter & Gamble Company Liquid detergent compositions
US5269974A (en) * 1992-09-01 1993-12-14 The Procter & Gamble Company Liquid or gel dishwashing detergent composition containing alkyl amphocarboxylic acid and magnesium or calcium ions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0181212A1 (en) * 1984-11-07 1986-05-14 The Procter & Gamble Company Liquid detergent compositions
US5269974A (en) * 1992-09-01 1993-12-14 The Procter & Gamble Company Liquid or gel dishwashing detergent composition containing alkyl amphocarboxylic acid and magnesium or calcium ions

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998005745A2 (en) * 1996-08-08 1998-02-12 Colgate-Palmolive Company Light duty liquid cleaning compositions
WO1998005745A3 (en) * 1996-08-08 1998-07-09 Colgate Palmolive Co Light duty liquid cleaning compositions
EP0854182A2 (en) * 1997-01-16 1998-07-22 Robert McBride Ltd Detergent formulation
GB2321253A (en) * 1997-01-16 1998-07-22 Mcbride Robert Ltd Liquid detergent formulation
EP0854182A3 (en) * 1997-01-16 1998-12-16 Robert McBride Ltd Detergent formulation
GB2321253B (en) * 1997-01-16 2000-10-18 Mcbride Robert Ltd Liquid detergent formulation
US6759382B2 (en) 2001-06-01 2004-07-06 Kay Chemical, Inc. Detergent composition containing a primary surfactant system and a secondary surfactant system, and a method of using the same
EP2757145B1 (en) 2013-01-21 2018-01-10 The Procter & Gamble Company Detergent
EP2757145B2 (en) † 2013-01-21 2024-02-07 The Procter & Gamble Company Detergent

Also Published As

Publication number Publication date
AR000891A1 (en) 1997-08-06
BR9607501A (en) 1997-12-23
HUP9900305A3 (en) 1999-11-29
CA2211318A1 (en) 1996-08-15
AU4538996A (en) 1996-08-27
AU714639B2 (en) 2000-01-06
ZA96735B (en) 1997-07-31
GB9502494D0 (en) 1995-03-29
HUP9900305A2 (en) 1999-05-28
EP0808355A1 (en) 1997-11-26

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