WO1997020912A1 - Use of an acidic composition for improved mildness to the skin - Google Patents
Use of an acidic composition for improved mildness to the skin Download PDFInfo
- Publication number
- WO1997020912A1 WO1997020912A1 PCT/US1996/018598 US9618598W WO9720912A1 WO 1997020912 A1 WO1997020912 A1 WO 1997020912A1 US 9618598 W US9618598 W US 9618598W WO 9720912 A1 WO9720912 A1 WO 9720912A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- composition
- use according
- compositions
- sulphamic
- Prior art date
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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2082—Polycarboxylic acids-salts thereof
Definitions
- the present invention is related to acidic hard-surfaces compositions, especially limescale removing compositions.
- Hard-surfaces cleaning compositions based on acids including strong acids and/or weak acids are known in the art.
- limescale removing compositions are mainly based on strong and/or weak acids.
- limescale removing compositions are perceived by the consumers as being amongst the most irritant detergent compositions. Indeed, many consumers suffer from skin irritation when using such compositions.
- compositions are used neat and also when used in diluted form.
- the acids may attack the uppermost layer of the epidermal of the skin and alter the natural pH 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.
- the skin may become inflamed and become red and sore and itchy.
- An object of the present invention is to improve skin mildness and reduce skin irritation of acidic compositions, especially acidic limescale removing compositions. Another object is to provide acidic limescale removing compositions which are milder to skin while exhibiting excellent limescale removing performance.
- the present invention overcomes these problems by the use of sulphamic acid in liquid acidic compositions suitable for descaling hard-surfaces. Indeed, it has now been found that by adding sulphamic acid, in a liquid composition comprising acids which are otherwise known to be irritant to the skin such as maleic acid, the skin mildness of said composition is improved. Indeed, less skin irritation is perceived by the user when its skin comes into contact with said composition.
- Limescale compositions comprising sulphamic acid are known in the art.
- EP-A- 666 305 discloses acidic limescale removing compositions comprising maleic acid and a second acid like sulphamic acid.
- EP-A- 66 305 fails to disclose that sulphamic acid when added in a liquid acidic composition allows to improve the skin mildness of said composition and/or to reduce the skin irritation of said composition.
- the present invention is the use of sulphamic acid in a liquid acidic composition comprising another acid, for improved skin mildness.
- Sulphamic acid An essential ingredient in the present invention is sulphamic acid.
- Sulphamic acid may be added in the compositions according to the present invention in its acid form or as an alkali metal salts thereof.
- sulphamic acid may be added for example as sulphamate.
- Sulphamic acid is commercially available under the trade name of Sulphamic acid by Albright & Wilson or Nissan chemicals.
- compositions comprise from 0.1% to 20% by weight of the total composition of sulphamic acid, preferably from 0.1 % to 10% and more preferably from 0.1 % to 5%.
- the compositions according to the present invention are acidic compositions. They are thus preferably formulated at a pH of from 0.1 to 4.5, more preferably of from 0.1 to 3 and most preferably of from 0.3 to 2.
- compositions according to the present invention are another acid or mixtures thereof.
- another acid it is meant herein any strong and/or weak organic or inorganic acids with the exception of said sulphamic acid. Any strong and weak acid known to thus skilled in the art may be used herein.
- the compositions according to the present invention are designed for removing limescale or soils comprising limescale as an essential component.
- compositions according to the present invention comprise as said other acid, a limescale removing inorganic acid such as sulphonic acid derivatives including alkyl sulphonic acids such as methanesulphonic acid and aryl sulphonic acids such as benzene sulphonic acid, toluene sulphonic acid or cumene sulphonic acid, as well as hydrochloric acid, nitric acid, phosphoric acid and sulphuric acid, or a limescale removing organic acid such as maleic acid or citric acid, or mixtures thereof.
- a limescale removing inorganic acid such as sulphonic acid derivatives including alkyl sulphonic acids such as methanesulphonic acid and aryl sulphonic acids such as benzene sulphonic acid, toluene sulphonic acid or cumene sulphonic acid, as well as hydrochloric acid, nitric acid, phosphoric acid and sulphuric acid, or a limescale
- Particularly suitable limescale removing acid to be used according to the present invention is maleic acid.
- Maleic anhydride is equally convenient for use in the compositions according to the present invention. Indeed maleic anhydride is generally cheaper than maleic acid and it is transformed into the acid form when incorporated in an aqueous medium.
- compositions according to the present invention comprise from 0.01% to 45% by weight of the total composition of said other acid or mixtures thereof, preferably from 1 % to 25% and more preferably from 4% to 18%.
- said other acid and said sulphamic acid are preferably present in the compositions herein in a weight ratio of said other acid to said sulphamic acid of from 400 to 0.1 , more preferably of from 40 to 0.5 and most preferably of from 10 to 0.5.
- the compositions may further comprise a number of additional ingredients.
- Suitable optional ingredients include surfactants like nonionic, anionic, zwitterionic, amphoteric and/or cationic surfactants.
- the compositions comprise from up to 40% by weight of the total composition of said surfactant, or mixtures thereof, preferably from 0.05% to 10%, more preferably from 0.1% to 8% and most preferably from 0.1% to 3%.
- Suitable nonionic surfactants to be used herein are alkoxylated alcohol nonionic surfactants which can be readily made by condensation processes which are well known in the art. However, a great variety of such alkoxylated alcohols, especially ethoxylated and/or propoxylated alcohols is also conveniently commercially available. Surfactants catalogs are available which list a number of surfactants, including nonionics.
- preferred alkoxylated alcohols for use herein are nonionic surfactants according to the formula RO(E)e(P)pH where R is a hydrocarbon chain of from 2 to 24 carbon atoms, E is ethylene oxide and P is propylene oxide, and e and p which represent the average degree of respectively ethoxylation and propoxylation, are of from 0 to 24.
- the hydrophobic moiety of the nonionic compound can be a primary or secondary, straight or branched alcohol having from 8 to 24 carbon atoms.
- Preferred nonionic surfactants for use in the compositions according to the invention are the condensation products of ethylene oxide with alcohols having a straight alkyl chain, having from 6 to 22 carbon atoms, wherein the degree of ethoxylation is from 1 to 15, preferably from 5 to 12.
- Such suitable nonionic surfactants are commercially available from Shell, for instance, under the trade name DobanoIR or from BASF under the trade name LutensolR. These nonionics are preferred because they have been found to allow the formulation of a stable product without requiring the addition of stabilizers or hydrotopes. When using other nonionics, it may be necessary to add hydrotopes such as cumene sulphonate or solvents such as butyldiglycolether.
- Suitable anionic surfactants for use herein are according to the formula R1SO3M wherein R1 represents a hydrocarbon group selected from the group consisting of straight or branched alkyl radicals containing from 6 to 24 carbon atoms and alkyl phenyl radicals containing from 6 to 15 carbon atoms in the alkyl group.
- M is a salt forming cation which typically is selected from the group consisting of sodium, potassium, ammonium, and mixtures thereof.
- Suitable anionic surfactants can be represented by the water-soluble salts of an alkyl sulfate or an alkyl polyethoxylate ether sulfate wherein the alkyl group contains from 6 to 24 carbon atoms, and preferably from 1 to 30 ethoxy groups for the alkyl polyethoxylate ether sulfates.
- Suitable cationic surfactants to be used herein include derivatives of quaternary ammonium, phosphonium, imidazolium and sulfonium compounds.
- Preferred cationic surfactants for use herein are according to the formula R1 R2R3R4N+ X-, wherein X is a counteranion, R1 is a C8-C20 hydrocarbon chain and R2, R3 and R4 are independently selected from H or C1-C4 hydrocarbon chains.
- R1 is a C12-C18 hydrocarbon chain, most preferably C14, C16 or C18, and R2, R3 and R4 are all three methyl, and X is halogen, preferably bromide or chloride, most preferably bromide.
- cationic surfactants are stearyl trimethyl ammonium bromide (STAB), cetyl trimethyl ammonium bromide (CTAB) and myristyl trimethyl ammonium bromide (MTAB).
- the surfactant is a mixture of a nonionic surfactant as described hereinbefore together with a cationic surfactant as described hereinbefore.
- Said compositions comprise from 0.5% to 15% by weight of the total composition of said mixture of surfactant.
- the compositions according to the present invention are liquid compositions. Said liquid compositions are preferably but not necessarily formulated as aqueous compositions. Accordingly, the aqueous compositions according to the present invention comprise from 10% to 95% by weight of the total composition of water, preferably from 50% to 90%, most preferably from 70% to 90%.
- compositions may also comprise a number of other additional ingredients such as perfumes, colorants, bactericide, thickeners, dyes, chelants, pigments, solvents, stabilizers, corrosion inhibitors and the like.
- the present invention may be further illustrated by the following examples.
- compositions which further illustrate the present invention were made by mixing the listed ingredients in the listed proportions (Weight %). All these compositions were found to be particularly mild to the skin when used both under neat and diluted conditions.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9521302A JPH11501975A (en) | 1995-12-07 | 1996-11-20 | Use of acidic compositions for improved mildness on the skin |
AU10203/97A AU1020397A (en) | 1995-12-07 | 1996-11-20 | Use of an acidic composition for improved mildness to the skin |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95870128A EP0778338A1 (en) | 1995-12-07 | 1995-12-07 | Use of sulphamic acid in an acidic composition for improved skin mildness |
EP95870128.6 | 1995-12-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997020912A1 true WO1997020912A1 (en) | 1997-06-12 |
Family
ID=8222169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1996/018598 WO1997020912A1 (en) | 1995-12-07 | 1996-11-20 | Use of an acidic composition for improved mildness to the skin |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0778338A1 (en) |
JP (1) | JPH11501975A (en) |
CN (1) | CN1207766A (en) |
AU (1) | AU1020397A (en) |
CA (1) | CA2239867A1 (en) |
WO (1) | WO1997020912A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG97839A1 (en) * | 2000-01-28 | 2003-08-20 | Pi Eta Consulting Company Pte | Fully flexible financial instrument pricing system with intelligent user interfaces |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070086971A1 (en) | 2005-10-19 | 2007-04-19 | Patrick Diet | Acidic Cleaning Compositions |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3953352A (en) * | 1973-06-04 | 1976-04-27 | Kao Soap Co., Ltd. | Acidic cleaning composition |
US4587030A (en) * | 1983-07-05 | 1986-05-06 | Economics Laboratory, Inc. | Foamable, acidic cleaning compositions |
US4986990A (en) * | 1984-03-21 | 1991-01-22 | Alcide Corporation | Disinfection method and composition therefor |
US5478501A (en) * | 1994-04-07 | 1995-12-26 | The Andrew Jergens Company | Bathing composition containing coated cationic polymer |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1483146A (en) * | 1965-06-11 | 1967-06-02 | Borg Holding A G | Process for treating metal surfaces in order to decontaminate them, and metal installations treated by said process |
US3349036A (en) * | 1965-10-20 | 1967-10-24 | Vego Chemical Corp | Cleaning composition |
GB1240469A (en) * | 1967-08-08 | 1971-07-28 | Atlas Preservative Company Ltd | Improvements in or relating to cleaning compositions |
US3650964A (en) * | 1968-05-13 | 1972-03-21 | Basf Wyandotte Corp | Low foam anionic acid sanitizer compositions |
US3909437A (en) * | 1973-01-18 | 1975-09-30 | Dow Chemical Co | Noncorrosive acid, solvent and nonionic surfactant composition |
-
1995
- 1995-12-07 EP EP95870128A patent/EP0778338A1/en not_active Withdrawn
-
1996
- 1996-11-20 CN CN 96199788 patent/CN1207766A/en active Pending
- 1996-11-20 WO PCT/US1996/018598 patent/WO1997020912A1/en active Application Filing
- 1996-11-20 JP JP9521302A patent/JPH11501975A/en active Pending
- 1996-11-20 CA CA 2239867 patent/CA2239867A1/en not_active Abandoned
- 1996-11-20 AU AU10203/97A patent/AU1020397A/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3953352A (en) * | 1973-06-04 | 1976-04-27 | Kao Soap Co., Ltd. | Acidic cleaning composition |
US4587030A (en) * | 1983-07-05 | 1986-05-06 | Economics Laboratory, Inc. | Foamable, acidic cleaning compositions |
US4986990A (en) * | 1984-03-21 | 1991-01-22 | Alcide Corporation | Disinfection method and composition therefor |
US5478501A (en) * | 1994-04-07 | 1995-12-26 | The Andrew Jergens Company | Bathing composition containing coated cationic polymer |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SG97839A1 (en) * | 2000-01-28 | 2003-08-20 | Pi Eta Consulting Company Pte | Fully flexible financial instrument pricing system with intelligent user interfaces |
Also Published As
Publication number | Publication date |
---|---|
JPH11501975A (en) | 1999-02-16 |
CA2239867A1 (en) | 1997-06-12 |
CN1207766A (en) | 1999-02-10 |
EP0778338A1 (en) | 1997-06-11 |
AU1020397A (en) | 1997-06-27 |
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