Classifications

• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/34—Organic compounds containing sulfur
  • C11D3/3409—Alkyl -, alkenyl -, cycloalkyl - or terpene sulfates or sulfonates
• • 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
  • C11D1/37—Mixtures of compounds all of which are anionic
• • 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
  • C11D1/143—Sulfonic 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
  • C11D1/14—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aliphatic hydrocarbons or mono-alcohols
  • C11D1/146—Sulfuric acid esters

Definitions

• the present invention relates to the cleaning of hard surfaces, especially glossy surfaces.
• compositions for the cleaning of hard surfaces are extensively discussed in the art. It is desirable that such compositions should have, in particular, the ability to provide a good shine to the cleaned surfaces. However, surface shine is often compromised by residues of the compositions which are left on said surfaces and which appear as streaks as water evaporation is completed.
• composition's residuality tends to be more of a problem as said composition is formulated as a concentrate, i.e it comprises more actives and less water.
• the residuality of said composition is even more noticeable as said composition is used to clean surfaces made of glossy materials, such as glossy ceramic tiles, windows and mirrors, or such materials as polyurethane-coated PVC which is widely used in Northern America.
• a first drawback is that it requires the specific addition of magnesium for this unique purpose. Indeed, adding magnesium to the finished product for this only purpose is economically unattractive. As an alternative, one could use anionic surfactants neutralized with magnesium ions, but this is also more expensive than using the traditional sodium salts of anionic surfactants.
• Another drawback is that when the product is to be formulated at higher pH, typically 9 and above, adding magnesium salts would inevitably lead to formation and precipitation of magnesium hydroxide in the finished product.
• compositions herein are preferably used in dilute form, but they also perform well in undiluted, i.e. neat form, which is typically required for tougher soils such as cooker tops. We have also found that the neat grease cleaning performance of the compositions herein is unaffected by dilution in the concentration range herein.
• the present invention encompasses hard surface cleaning compositions which comprise an anionic surfactant, which complexe magnesium ions as said compositions are concentrated with water comprising magnesium ions.
• the present invention further encompasses concentrated and diluted aqueous compositions comprising a short chain anionic surfactant, a long chain anionic surfactant, and a hydrotrope, in selected ratios.
• the present invention further encompasses methods of using said composition.
• compositions of the present invention improve the shine on surfaces on which they are applied, in that they reduce the residuality of cleaning compositions for hard surfaces.
• the word "residuality” refers to the propensity of a composition to leave visible residues on a given surface.
• a composition with a high residuality is a composition which leaves substantially visible residues on surfaces, and which is therefore improper for use in a no-rinse mode.
• a composition's residuality in given usage conditions can be evaluated by measuring the glossiness of a surface cleaned with said composition, for instance using a glossmeter, or visually by a panel of expert judges.
• the present invention is based on the finding that, in compositions comprising an anionic surfactant system, using magnesium ions as counterions for said anionic surfactant system will reduce the residuality of said compositions.
• This residuality reduction phenomenon i.e. the reduction of the visibility of residues, but not necessarily the amount of residues, is clearly noticeable by eye, and it can be quantified by measuring the glossiness of a given surface cleaned with a composition of the present invention.
• the magnesium ions are complexed in situ, as a composition according to the present invention is contacted with water comprising magnesium ions, either prior to usage, or upon rinsing after usage.
• compositions of the present invention are aqueous compositions, which comprise from 40% to 97% water, preferably from 50% to 95%. It is highly preferable to use demineralized water to manufacture the compositions herein, in order to avoid the issues generally associated with the use of "tap water” at the manufacturing stage, typically precipitations of various materials depending on the formulation parameters. If tap water is nevertheless used during manufacture, said water is generally sufficient to provide the magnesium ions which are complexed in situ - in this case - during manufacture.
• compositions of the present invention comprise a short chain anionic surfactant and a long chain anionic surfactant.
• Suitable anionic surfactants for use herein include those well known in the art, i.e. alkyl sulfates, alkyl ether sulfates, alkyl sulfonates, alkyl benzene sulfonates, alkyl succinates, alkyl carboxylates, alkyl ether carboxylates, alkyl sarcosinates, alkyl sulfo succinates and the like.
• short chain anionic surfactant refers to a surfactant as described above, where the alkyl chain has from 6 to 10 carbon atoms, or mixtures thereof.
• Preferred short chain anionic surfactants for use herein are those where the alkyl chain has 8 carbon atoms, as well as mixtures of two short chain anionic surfactants where one has 7 carbon atoms and the other has 9 carbon atoms.
• the short chain surfactants be of the sulfate type, as opposed to sulfonate, preferably an alkyl sulfate.
• Short chain anionic surfactants are commercially available for instance from Rhone Poulenc under the trade name Rhodapon ®, or from Witco under the trade name Witconate ®.
• long chain anionic surfactant refers to a surfactant as described above, where the alkyl chain has from 10 to 20 carbon atoms, or mixtures thereof. Of course, if the short chain above has 10 carbon atoms, then the long chain should have more than 10 carbon atoms.
• Preferred long chain anionic surfactants for use herein are those where the alkyl chain has from 12 to 16 carbon atoms. Also, we have found that it is preferred that the long chain surfactants herein be of the sulfonate type, as opposed to sulfate, preferably an alkyl sulfonate, most preferably a secondary sulfonate. Suitable long chain anionic surfactants are commercially available from Hoechst under the trade name Hostapur ®, or from Hüls under the trade name MARLON ®.
• Both anionic surfactants can conveniently be provided to the composition in the form of neutralized salts, with any conventional, commercially available counterion, typically Na, K, Li, NH4 or alkanolamine. As discussed in the background herein, it is a benefit of the present invention that it allows not to use magnesium salts of anionic surfactants, which are expensive to make. From this economical point of view, it is highly preferred to use sodium salts of anionic surfactants. Short chain anionic surfactants and long chain anionic surfactants herein can be provided with identical or different counterions.
• the long chain surfactant and the short chain surfactant be present in a defined ratio range, namely from 1:0.1 to 1:4 (long chain to short chain), preferably from 1:0.5 to 1:2.
• the compositions herein typically comprise from 0.2% to 8% of said short chain anionic surfactant, preferably from 0.5% to 4%, and from 0.5% to 10% of said long chain anionic surfactant, preferably from 2% to 5%.
• compositions herein may further comprise additional surfactants, including nonionic surfactants, typically alkyl alkoxylates, and zwitterionic surfactants, preferably nonionic surfactants.
• additional surfactants including nonionic surfactants, typically alkyl alkoxylates, and zwitterionic surfactants, preferably nonionic surfactants.
• compositions herein should comprise a hydrophope.
• Suitable hydrophopes for use herein include C1-C4 alkyl benzene sulfonates, branched or linear.
• Suitable hydrotropes for use herein are commercially available from Hommes under the trade name Na Cumol Sulfonat ®, or from Manro under the trade name SCS 40 ®.
• Preferred for use herein are cumene sulfonates and xylene sulfonates, preferably their sodium salts.
• the compositions herein may comprise from 0.5% to 5% of said hydrotrope, preferably from 1% to 4%. But it is essential that the hydrotrope be present in a certain ratio range to said short chain anionic surfactant, namely 0.05:1 to 40:1, more preferred 0.25:1 to 4:1.
• compositions herein can be formulated in a variety of pH range, above the anionic surfactants' pKs, otherwise said anionic surfactants become protonated, and cannot effectively complex magnesium anymore. Also, as discussed in the background herein, the present invention is particularly useful for compositions formulated at pH above about 9, in which magnesium sulfate would precipitate as magnesium hydroxide if it was simply added on top in finished product. Thus the compositions herein are formulated at a pH of 9 or more, preferably of from 9 to 12, preferably 10 to 11.
• compositions herein may further comprise a variety of other ingredients, including, builders such as carbonates, citrates, alkanolamines, solvents, beaches, enzymes, dyes, perfumes and other aesthetics.
• builders such as carbonates, citrates, alkanolamines, solvents, beaches, enzymes, dyes, perfumes and other aesthetics.
• the present invention further encompasses methods of using the compositions herein.
• a composition according to the present invention is diluted in water, whereby magnesium ions from the dilution water are complexed in situ, before it is applied onto a hard surface.
• a composition according to the present invention is applied onto a hard surface without having been diluted, and subsequently rinsed off of said surface with water, whereby magnesium ions from the rinse water are complexed in situ.
• Another, less preferred method herein is a method of manufacturing a composition according to the present invention, where the ingredients constituting the composition are mixed with water, i.e. the "processing water", containing magnesium ions, whereby the magnesium water from the processing water are complexed in situ.
• processing water containing magnesium ions
• this method requires the use of tap water as opposed to demineralized water. This method allows in situ complexation of magnesium, but in some instances it may lead to precipitation phenomenons.
• compositions were made by mixing the listed ingredients in the listed proportions. Then, they were diluted and used to clean various tiles. The experiment was performed with distilled water (no magnesium), soft water (3gpg) and hard water (20 gpg).
• the shine i.e. the residuality was evaluated visually and graded by a panel of 4 expert judges, using 3 replicates per composition and per dilution condition. The results are expressed as panel score units (psu) ref. from 1 to 4 as shine improves.

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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)
• Detergent Compositions (AREA)
• Polishing Bodies And Polishing Tools (AREA)

Priority Applications (9)

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Citations (6)

Family Cites Families (4)

• 1994
  • 1994-09-20 EP EP94870151A patent/EP0703290A1/fr not_active Withdrawn
• 1995
  • 1995-09-14 MX MX9702100A patent/MX9702100A/es unknown
  • 1995-09-14 BR BR9509023A patent/BR9509023A/pt not_active Application Discontinuation
  • 1995-09-14 WO PCT/US1995/011604 patent/WO1996009364A1/fr active Application Filing
  • 1995-09-14 JP JP8510966A patent/JPH10508621A/ja active Pending
  • 1995-09-14 AU AU35876/95A patent/AU704120B2/en not_active Ceased
  • 1995-09-14 CA CA 2200432 patent/CA2200432A1/fr not_active Abandoned
• 1997
  • 1997-03-14 NO NO971181A patent/NO971181D0/no unknown
  • 1997-03-19 FI FI971157A patent/FI971157A0/fi unknown

Patent Citations (6)

Non-Patent Citations (1)

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