EP0644256B1 - Use of hypochlorite comprising compositions having an improved skin mildness - Google Patents

Use of hypochlorite comprising compositions having an improved skin mildness Download PDF

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Publication number
EP0644256B1
EP0644256B1 EP19930870193 EP93870193A EP0644256B1 EP 0644256 B1 EP0644256 B1 EP 0644256B1 EP 19930870193 EP19930870193 EP 19930870193 EP 93870193 A EP93870193 A EP 93870193A EP 0644256 B1 EP0644256 B1 EP 0644256B1
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EP
European Patent Office
Prior art keywords
hypochlorite
compositions
alkyl
skin
composition
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.)
Expired - Lifetime
Application number
EP19930870193
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German (de)
French (fr)
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EP0644256A1 (en
Inventor
Anna Lucia D'orazio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Procter and Gamble Co
Original Assignee
Procter and Gamble Co
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Filing date
Publication date
Application filed by Procter and Gamble Co filed Critical Procter and Gamble Co
Priority to EP19930870193 priority Critical patent/EP0644256B1/en
Priority to DE1993624253 priority patent/DE69324253T2/en
Priority to ES93870193T priority patent/ES2129511T3/en
Priority to US08/617,774 priority patent/US5773402A/en
Priority to PCT/US1994/010247 priority patent/WO1995008612A1/en
Priority to CA002171529A priority patent/CA2171529C/en
Publication of EP0644256A1 publication Critical patent/EP0644256A1/en
Application granted granted Critical
Publication of EP0644256B1 publication Critical patent/EP0644256B1/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
    • C11D1/83—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
    • C11D1/04—Carboxylic acids or salts thereof
    • C11D1/10—Amino carboxylic acids; Imino carboxylic acids; Fatty acid condensates 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
    • C11D3/395—Bleaching agents
    • C11D3/3956—Liquid 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
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/04—Carboxylic acids or 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
    • 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
    • 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
    • C11D1/66—Non-ionic compounds
    • C11D1/75—Amino oxides

Definitions

  • the present invention is related to improve the skin mildness of hypochlorite-based compositions.
  • hypochlorite is an irritant and many consumers suffer from skin irritation when using such compositions.
  • the hands of the user are prone to such irritation.
  • the hands suffer from dryness and from a feeling of tightness. This occurs when the compositions are used neat and also when used in diluted form.
  • hypochlorite attacks the uppermost layer of the epidermal of the skin. This results in the decrease of the elasticity of the skin. The skin also becomes more sensitive, resulting in dryness and coarseness of the skin. In addition the skin may become inflamed and become red and sore and itchy. These effects are magnified in alkaline conditions, because alkali is also an irritant. Alkalinity is required for hypochlorite stability and it thus the preferred condition for hypochlorite-comprising compositions. However, alkaline conditions contribute to skin tightening because it alters the natural pH of the skin.
  • the object of the present invention is to improve skin mildness and reduce skin irritation of hypochlorite-comprising compositions.
  • the present invention overcomes these problems by the use of the combination of amine oxides and specific alkyl sulphates in hypochlorite-comprising compositions. It is believed that this surfactant combination wets the skin and provides a protective layer against hypochlorite and alkalinity on the skin.
  • EP 274 885 discloses thickened bleaching compositions comprising alkali metal hypochlorite and straight chain C 14 amine oxide with a mixture of branched and straight chain C 15 amine oxide. There is no mention of short chain surfactants or the reduction of hypochlorite related skin irritation.
  • EP 233 666 discloses a process for the manufacture of a thickened bleaching compositions comprising hypochlorite, a hypochlorite-soluble surfactant, including amine oxide and an alkali metal salt of a fatty acid. There is no mention of the reduction of hypochlorite related skin irritation.
  • DE 28 37 880 covers bleaching compositions comprising alkali metal hypochlorite and mixtures of branched and linear amine oxides of varying chain length, (C 5 -C 17 ) for increased viscosity. There is no mention of other long or short chain surfactants or the reduction of hypochlorite skin irritation.
  • EP 30 401 covers thickened bleaching compositions comprising hypochlorite and a certain number of product characteristics including pH and viscosity. Mixtures of C 8 -C 18 amine oxides and fatty acids are preferred as thickening agents. No other surfactants are disclosed. There is also no mention of reducing the irritation effects due to the hypochlorite.
  • EP-A-635568 and WO95/03383 disclose short chain surfactants.
  • the present invention is the use of the combination of 1-5% amine oxide with 1-8% alkyl sulphate to improve skin mildness of hypochlorite-comprising compositions comprising 0,4-5% hypochlorite.
  • Said amine oxide is according to the formula R 1 R 2 R 3 NO, wherein R 1 is a C 8 to C 18 alkyl group and R 2 and R 3 are independently C 1 to C 3 alkyl groups.
  • Said alkyl sulphate is according to the formula R 4 OSO 3 H, wherein R 4 is a C 6 to C 10 alkyl group.
  • the present invention is the use of the combination of an amine oxide and an alkyl sulphate to improve skin mildness of hypochlorite-comprising compositions.
  • hypochlorite an essential ingredient in the present invention is hypochlorite.
  • the hypochlorite is an alkali metal hypochlorite.
  • alkali metal hypochlorites are preferred other hypochlorite compounds may also be used herein and can be selected from calcium and magnesium hypochlorite.
  • the compositions comprise said hypochlorite compound such that the content of active chlorine in the composition is from 0.4% to 5%, preferably from 1% to 4%, most preferably from 1% to 3%.
  • Another essential ingredient is a combination of an amine oxide with an alkyl sulphate to improve skin mildness of the composition.
  • Said amine oxide is according to the formula R 1 R 2 R 3 NO, wherein R 1 is a C 8 to C 18 alkyl group and R 2 and R 3 are independently C 1 to C 3 alkyl groups.
  • R 1 is a C 10 -C 18 , more preferably C 12 -C 18 alkyl group and R 2 and R 3 are preferably independently C 1 -C 3 , more preferably C 1 -C 2 alkyl groups.
  • the composition comprises from 1% to 5%, more preferably from 1.5% to 4.5%, most preferably from 2% to 4% of said amine oxide and mixtures thereof.
  • Said alkyl sulphate is according to the formula R 4 OSO 3 H, wherein R 4 is a C 6 to C 10 , preferably a C 7 -C 9 , more preferably a C 8 alkyl group.
  • R 4 is a C 6 to C 10 , preferably a C 7 -C 9 , more preferably a C 8 alkyl group.
  • the composition comprises from 1% to 8%, more preferably from 1.5% to 7.5%, most preferably from 2% to 7% of said alkyl sulphate and mixtures thereof.
  • compositions may further comprise a number of additional ingredients.
  • Suitable optional ingredients include other hypochlorite-compatible long chain surface actives including alkyl sarcosinates, alkyl ether sulphates, paraffin sulphonates and amine oxides.
  • Another optional component of the present invention is an alkali metal salt of a C 8 -C 18 fatty acid.
  • Suitable fatty acids for use herein can be any C 8 -C 18 fatty acid, preferably fully saturated, preferably a sodium, potassium or lithium salt, more preferably the sodium salt.
  • compositions have a pH greater than 10, preferably greater than 11, more preferably greater than 12. This is achieved by the addition of from 0.8% to 1.5% of a caustic alkali.
  • Suitable caustic alkalis for use herein include sodium and potassium hydroxide.
  • composition may also comprise a number of other additional ingredients such as hypochlorite stable and soluble colourants, perfumes and hydrotopes such as sodium xylene sulphonate.
  • compositions are prepared by methods known in the art such as those described in GB 1 329 086.
  • the compositons may be used for a variety of purposes, such as bleaching and hard surfaces cleaning.
  • compositions can be illustrated by the following examples.

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)
  • Cosmetics (AREA)

Description

    Field of the Invention
  • The present invention is related to improve the skin mildness of hypochlorite-based compositions.
    • Background of the Invention
  • It is highly desirable to incorporate hypochlorite in detergent compositions for bleaching. However, hypochlorite is an irritant and many consumers suffer from skin irritation when using such compositions.
  • Particularly, the hands of the user are prone to such irritation. As a result of coming into contact with such compositions the hands suffer from dryness and from a feeling of tightness. This occurs when the compositions are used neat and also when used in diluted form.
  • It is believed that hypochlorite attacks the uppermost layer of the epidermal of the skin. This results in the decrease of the elasticity of the skin. The skin also becomes more sensitive, resulting in dryness and coarseness of the skin. In addition the skin may become inflamed and become red and sore and itchy. These effects are magnified in alkaline conditions, because alkali is also an irritant. Alkalinity is required for hypochlorite stability and it thus the preferred condition for hypochlorite-comprising compositions. However, alkaline conditions contribute to skin tightening because it alters the natural pH of the skin.
  • The object of the present invention is to improve skin mildness and reduce skin irritation of hypochlorite-comprising compositions.
  • The present invention overcomes these problems by the use of the combination of amine oxides and specific alkyl sulphates in hypochlorite-comprising compositions. It is believed that this surfactant combination wets the skin and provides a protective layer against hypochlorite and alkalinity on the skin.
  • Amine oxides and alkyl sulphates are known in the art. US 4 282 109 discloses a thickened bleach composition comprising hypochlorite and a thickening amount of a surfactant blend, comprising amine oxide C10-C18 and alkyl sulphate C8-C12. There is no mention of the reduction of hypochlorite related skin irritation of these compositions.
  • EP 274 885 discloses thickened bleaching compositions comprising alkali metal hypochlorite and straight chain C14 amine oxide with a mixture of branched and straight chain C15 amine oxide. There is no mention of short chain surfactants or the reduction of hypochlorite related skin irritation.
  • EP 233 666 discloses a process for the manufacture of a thickened bleaching compositions comprising hypochlorite, a hypochlorite-soluble surfactant, including amine oxide and an alkali metal salt of a fatty acid. There is no mention of the reduction of hypochlorite related skin irritation.
  • DE 28 37 880 covers bleaching compositions comprising alkali metal hypochlorite and mixtures of branched and linear amine oxides of varying chain length, (C5-C17) for increased viscosity. There is no mention of other long or short chain surfactants or the reduction of hypochlorite skin irritation.
  • EP 30 401 covers thickened bleaching compositions comprising hypochlorite and a certain number of product characteristics including pH and viscosity. Mixtures of C8-C18 amine oxides and fatty acids are preferred as thickening agents. No other surfactants are disclosed. There is also no mention of reducing the irritation effects due to the hypochlorite.
  • European application EP-A-635568 and WO95/03383 disclose short chain surfactants.
    • Summary of the Invention
  • The present invention is the use of the combination of 1-5% amine oxide with 1-8% alkyl sulphate to improve skin mildness of hypochlorite-comprising compositions comprising 0,4-5% hypochlorite. Said amine oxide is according to the formula R1R2R3NO, wherein R1 is a C8 to C18 alkyl group and R2 and R3 are independently C1 to C3 alkyl groups. Said alkyl sulphate is according to the formula R4OSO3H, wherein R4 is a C6 to C10 alkyl group.
  • All amounts, ratios, percentages and parts herein are given as a % weight of the total composition unless otherwise stated.
    • Detailed Description of the Invention
  • The present invention is the use of the combination of an amine oxide and an alkyl sulphate to improve skin mildness of hypochlorite-comprising compositions.
  • Thus, an essential ingredient in the present invention is hypochlorite. Preferably the hypochlorite is an alkali metal hypochlorite. Although alkali metal hypochlorites are preferred other hypochlorite compounds may also be used herein and can be selected from calcium and magnesium hypochlorite. According to the present invention the compositions comprise said hypochlorite compound such that the content of active chlorine in the composition is from 0.4% to 5%, preferably from 1% to 4%, most preferably from 1% to 3%.
  • Another essential ingredient is a combination of an amine oxide with an alkyl sulphate to improve skin mildness of the composition. Said amine oxide is according to the formula R1R2R3NO, wherein R1 is a C8 to C18 alkyl group and R2 and R3 are independently C1 to C3 alkyl groups. Preferably R1 is a C10-C18, more preferably C12-C18 alkyl group and R2 and R3 are preferably independently C1-C3, more preferably C1-C2 alkyl groups. In the present invention the composition comprises from 1% to 5%, more preferably from 1.5% to 4.5%, most preferably from 2% to 4% of said amine oxide and mixtures thereof.
  • Said alkyl sulphate is according to the formula R4OSO3H, wherein R4 is a C6 to C10, preferably a C7-C9, more preferably a C8 alkyl group. According to the present invention the composition comprises from 1% to 8%, more preferably from 1.5% to 7.5%, most preferably from 2% to 7% of said alkyl sulphate and mixtures thereof.
  • According to the present invention the compositions may further comprise a number of additional ingredients. Suitable optional ingredients include other hypochlorite-compatible long chain surface actives including alkyl sarcosinates, alkyl ether sulphates, paraffin sulphonates and amine oxides.
  • Another optional component of the present invention is an alkali metal salt of a C8-C18 fatty acid. Suitable fatty acids for use herein can be any C8-C18 fatty acid, preferably fully saturated, preferably a sodium, potassium or lithium salt, more preferably the sodium salt.
  • In a highly preferred embodiment of the present invention the compositions have a pH greater than 10, preferably greater than 11, more preferably greater than 12. This is achieved by the addition of from 0.8% to 1.5% of a caustic alkali. Suitable caustic alkalis for use herein include sodium and potassium hydroxide.
  • According to the present invention the composition may also comprise a number of other additional ingredients such as hypochlorite stable and soluble colourants, perfumes and hydrotopes such as sodium xylene sulphonate.
  • According to the present invention the compositions are prepared by methods known in the art such as those described in GB 1 329 086.
  • According to the present invention the compositons may be used for a variety of purposes, such as bleaching and hard surfaces cleaning.
  • According to the present invention the compositions can be illustrated by the following examples.
    Figure 00060001
    Figure 00070001

Claims (6)

  1. The use of the combination of an amine oxide according to the formula R1R2R3NO, wherein R1 is a C8 to C18 alkyl group and R2 and R3 are independently C1 to C3 alkyl groups, at a level of 1% to 5% by weight of the total composition, with an alkyl sulphate according to the formula R4OSO3H, wherein R4 is a C6 to C10 alkyl group, at a level of 1% to 8% by weight of the total composition, to improve the skin mildness of a composition comprising from 0.4% to 5% by weight of hypochlorite.
  2. The use according to claim 1, wherein in said amine oxide R1 is C10-C12 and R2 is C1 and R3 is C1.
  3. The use according to claims 1 and 2, wherein in said alkyl sulphate R4 is C7-C9.
  4. The use according to any of the preceding claims, wherein said hypochlorite is sodium hypochlorite.
  5. The use according to any of the preceding claims, wherein the pH of said composition is at least 12.
  6. The use according to any of the preceding claims, wherein said composition further comprises surfactants selected from akyl sulphonates, C12-C18 alkyl sulphates, alkyl ether carboxylates and alkyl ether sulphates.
EP19930870193 1993-09-20 1993-09-20 Use of hypochlorite comprising compositions having an improved skin mildness Expired - Lifetime EP0644256B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP19930870193 EP0644256B1 (en) 1993-09-20 1993-09-20 Use of hypochlorite comprising compositions having an improved skin mildness
DE1993624253 DE69324253T2 (en) 1993-09-20 1993-09-20 Use of hypochlorite-containing compositions with improved skin protection
ES93870193T ES2129511T3 (en) 1993-09-20 1993-09-20 USE OF COMPOSITIONS INCLUDING HYPOCHLORITE WITH AN IMPROVED SOFTNESS FOR THE SKIN.
US08/617,774 US5773402A (en) 1993-09-20 1994-09-12 Hypochlorite-comprising compositions for improved mildness to the skin
PCT/US1994/010247 WO1995008612A1 (en) 1993-09-20 1994-09-12 Use of hypochlorite-comprising compositions for improved mildness to the skin
CA002171529A CA2171529C (en) 1993-09-20 1994-09-12 Use of hypochlorite-comprising compositions for improved mildness to the skin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19930870193 EP0644256B1 (en) 1993-09-20 1993-09-20 Use of hypochlorite comprising compositions having an improved skin mildness

Publications (2)

Publication Number Publication Date
EP0644256A1 EP0644256A1 (en) 1995-03-22
EP0644256B1 true EP0644256B1 (en) 1999-03-31

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EP19930870193 Expired - Lifetime EP0644256B1 (en) 1993-09-20 1993-09-20 Use of hypochlorite comprising compositions having an improved skin mildness

Country Status (5)

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EP (1) EP0644256B1 (en)
CA (1) CA2171529C (en)
DE (1) DE69324253T2 (en)
ES (1) ES2129511T3 (en)
WO (1) WO1995008612A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0103401D0 (en) * 2001-10-12 2001-10-12 Natalie Fresia Means against lice as well as vermin

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2051162A (en) * 1979-05-30 1981-01-14 Reckitt & Colmann Prod Ltd Thickened aqueous alkali metal hypochlorite solutions
US4789495A (en) * 1987-05-18 1988-12-06 The Drackett Company Hypochlorite compositions containing a tertiary alcohol
US5227366A (en) * 1987-08-07 1993-07-13 The Clorox Company Mitigation of stress-cracking in fragranced bleach-containing bottles
GB9201519D0 (en) * 1992-01-24 1992-03-11 Unilever Plc Detergent compositions

Also Published As

Publication number Publication date
DE69324253T2 (en) 1999-11-04
ES2129511T3 (en) 1999-06-16
CA2171529A1 (en) 1995-03-30
CA2171529C (en) 1999-12-07
EP0644256A1 (en) 1995-03-22
DE69324253D1 (en) 1999-05-06
WO1995008612A1 (en) 1995-03-30

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