ES2287532T3 - IMPROVED DETERGENT COMPOSITION. - Google Patents

Abstract

A synergistic cleaning composition comprising surfactants and polymer, in which: a) one or more surfactants are present in an amount of 5 to 95%, in which at least 40% by weight of the total surfactant is non-ionic surfactant; and b) one or more water swellable polymers are present that absorb more than their water weight in an amount of 5 to 95%; in which the weight ratio of surfactant to water swellable polymer varies in the range of 1: 0, 4 to 0, 4: 1, and in which the water swellable polymer is chosen from the group consisting of poly (acrylic acids ), polyacrylates, cross-linked acrylate polymers, guar gum and its derivatives, starch-acrylic graft copolymers, hydrolysates of starch-acrylonitrile graft copolymers, cross-linked polyoxyethylene, cross-linked carboxymethylcellulose, partially cross-linked water swellable polymers such as poly (ethylene oxide) and polyacrylamide and isobutylene / maleic acid copolymer.

Description

Improved detergent composition.

Technical field

The invention relates to compositions of synergistic cleaning, containing surfactants and polymers inflatables, which are suitable for surface cleaning hard.

Prior art

Surface cleaning compositions hard commercials typically comprise one or more surfactants  and a plurality of abrasive particles dispersed therein. Combinations of surfactants are often used, along with electrolytes, to form a suspension system for abrasives, as is well known in the art. They're available various forms of cleaning compositions that are in the form of liquids, pastes, gels, powders and bars. Typical abrasives Used in these compositions include calcites and dolomites.

Within the domestic environment, the surfaces Hard are kitchen utensils, kitchen walls and floors, work surfaces and sinks, walls, floors and bathroom toilets, other floors and the like, and can be Find different types of dirt on these surfaces. The dirt that is usually found in utensils Kitchen and cooking countertops is of two types, that is, dirt mobile or greasy and stubborn or hard to remove dirt consisting of dry or burned food. The problem of eliminating this dirt is accentuated more when stubborn dirt builds up during a period of time and this requires considerable effort to clean it In general, the level of surfactant in the compositions  cleaning reaches approximately 20% and the rest being constituted by other ingredients. An important part of the formulation is formed by abrasives, detergency builders and loads It is necessary to add these ingredients to improve the dispersibility of the surfactant on the surface a clean especially in hand wash situations.

Polymers have been used in compositions of cleaning for various benefits such as structuring functions  and dirt removal. EP883670 (Unilever, 1998), describes dishwashing gel compositions for the Machine wash that have a high viscosity. These have a two component structuring system comprising 0.2 - 2% of a crosslinked polycarboxylate and an azol.

The document EP-A-1 074 608 describes tablets of detergent of compressed material in the form of particles. The tablet or one of its regions contains at least one agent superficially active, a detergency builder and an agent water insoluble disintegrant but water inflatable. More in In particular, the tablet or one of its regions contains at least 5% by weight of surface active agent of which at least one portion is a solid non-ionic surface active agent and not contains more than 3% by weight of surface active agent not liquid ionic

WO 00/42143 describes compositions detergents suitable for cleaning the laundry or surfaces hard comprising up to 50% by weight of the detergent composition total of an active detergent agent and ghatti gum, a gum of branched hydrocolloids that swell with water obtained from the species belonging to the Anogeissus genera.

WO 01/21756 describes tablets of cleaning composition in the form of compacted particles that contain at least one cleaning ingredient that is selected from group consisting of organic surfactants, agents water softeners and bleaches, in which it is present in a higher concentration a disintegration promoting material Water insoluble and water inflatable in at least one adjacent area  to a surface of the tablet than in an interior area that is farther from any surface of the tablet.

Add a large amount of water along with abrasives, detergency builders and fillers increase the mass of the product and therefore increases the cost and difficulty of transport from the place of manufacture to the point of use.

Thus, there is a need for a composition of concentrated cleaning that can be turned into a ready product for use by the consumer by adding water. This concentrated composition would save part of the cost of transportation and packaging compared to a diluted composition.

Brief Description of the Invention

The present invention provides a synergistic concentrated cleaning composition comprising one or more surfactants and one or more water swellable polymers than They can absorb more of your water weight. The composition can be turn into a bulky paste or dense liquid by simply water addition before use, to ensure the ability to dispersion of the composition on a large number of surfaces a clean.

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Detailed description

Unless otherwise indicated all parts and percentages cited herein are by weight of the composition.

The present invention thus provides a synergistic cleaning composition comprising surfactants and polymer in which: one or more surfactants are present in a 5-95% amount, being non-ionic surfactant at minus 40% by weight of the total surfactant; and one or more water swellable polymers that absorb more than their weight of water in an amount of 5-95%; in which the relationship by weight of the water swellable polymer surfactant varies in the range of 1: 0.4 to 0.4: 1, and in which the swellable polymer in water is chosen from the group consisting of poly (acrylic acids), polyacrylates, crosslinked acrylate polymers, guar gum and their derivatives, graft copolymers of starch-acrylic acid, graft copolymer hydrolysates of starch-acrylonitrile, cross-linked polyoxyethylene, cross-linked carboxymethyl cellulose, water swellable polymers partially crosslinked such as poly (ethylene oxide) and polyacrylamide and isobutylene-maleic acid copolymer.

In the context of the present invention, the expression "cleaning composition" refers to compositions  in the form of solid powders, pellets, pellets or cylindrical masses or to pastes or gels that can be converted into a product with a larger volume by adding water. The product thus obtained it can be applied more easily or dispersed on the surface to clean.

Surfactants

The composition according to the invention will comprise one or more surfactants that are usually chosen from anionic, nonionic, cationic or amphoteric surfactants. Be prefers that the surfactant in the composition ranges from 5 to 50%, more preferably from 5 to 25% by weight of the composition.

An appropriate class of anionic surfactants are the water soluble salts of organic monoesters of the acid sulfuric acid and sulfonic acids that have in molecular structure a straight or branched chain alkyl group containing 8 to 22 C atoms or an arylalkyl group containing 6 to 20 C atoms in the alkyl part.

Examples of such anionic surfactants are water soluble salts of:

?

long chain alcohol sulfates (ie 8-22 C atoms) (herein hereinafter referred to as PAS), especially those obtained by sulfation of fatty alcohols produced from oil tallow or coconut or synthetic alcohols derived from Petroleum;

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alkylbenzenesulfonates, such like those in which the alkyl group contains 6 to 20 atoms carbon;

?

alkanesulfonates secondary.

Also suitable are salts of:

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alkyl glyceryl ether sulfates, in special ethers of fatty alcohols derived from oil tallow and coconut;

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acid monoglyceride sulfates fatty

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sulfates of aliphatic alcohols ethoxylates containing 1 to 12 ethyleneoxy groups;

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alkylphenol ethyleneoxy ether sulfates with from 1 to 8 ethyleneoxy units per molecule and in the that the alkyl groups contain from 4 to 14 atoms of carbon;

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the reaction product of fatty acids esterified with isethionic acid and neutralized with alkali.

An appropriate class of non-ionic surfactants It can be widely described as compounds produced by the condensation of simple alkylene oxides, which are of nature hydrophilic, with an aliphatic hydrophobic compound or alkyl aromatic having a hydrogen atom reagent. The length of the hydrophilic or polyoxyalkylene chain which binds to a particular hydrophobic group any one can easily adjust to provide a compound that has the desired balance between hydrophilic and hydrophobic elements. This allows the choice of non-ionic surfactants with the HLB (Hydrophilic Balance - Lipophilic) correct. Particular examples include:

?

condensation products of aliphatic alcohols with 8 to 22 carbon atoms in configuration linear or branched with ethylene oxide, such as condensates of coconut alcohol / ethylene oxide having 2 to 15 moles of ethylene oxide per mole of coconut alcohol;

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alkylphenol condensates that they have C 6 -C 15 alkyl groups with 5 to 25 moles of ethylene oxide per mole of alkylphenol;

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product condensates of reaction of ethylenediamine and propylene oxide with ethylene oxide, condensates containing 40 to 80% ethyleneoxy groups in weight and they have a molecular weight of 5,000 to 11,000.

Other classes of non-ionic surfactants They are:

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alkyl polyglycosides, which are condensation products of long chain aliphatic alcohols and saccharides;

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tertiary amine oxides of RRRN0 structure, in which R is an alkyl group of 8 to 20 atoms carbon and the other R are each alkyl groups or hydroxyalkyl of 1 to 3 carbon atoms, for example oxide of dimethyldodecylamine;

?

tertiary phosphine oxides of RRRP0 structure, in which R is an alkyl group of 8 to 20 carbon atoms and the other R are each alkyl groups or hydroxyalkyl of 1 to 3 carbon atoms, for example, oxide of dimethyl dodecifosphine;

?

dialkyl sulfoxides of RRS0 structure, in which an R is an alkyl group of 10 to 18 carbon atoms and the other one is methyl or ethyl, for example methyltetradecyl sulfoxide;

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fatty acid alkylamides, such as ethanolamides;

?

ethylene oxide condensates of fatty acid alkylamides;

?

Rent mercaptans.

A specific group of surfactants are the tertiary amines obtained by condensation of ethylene oxide and / or propylene with long chain aliphatic amines. The compounds they behave as nonionic surfactants in alkaline medium and as cationic surfactants in acidic medium.

Optionally, it is possible to include surfactants amphoteric, cationic or bipolar in the compositions according with the invention

Suitable amphoteric surfactant compounds that optionally they can be used are derivatives of secondary amines and aliphatic tertiary containing an alkyl group of 8 to 18 carbon atoms and an aliphatic radical substituted with a group soluble in anionic water, for example 3-dodecylamino sodium propionate, 3-dodecylaminopropane sulfonate sodium and N-2-hydroxidedecyl-N-methyl restaurant sodium

Examples of suitable cationic surfactants can be found among the quaternary ammonium salts that they have one or two alkyl or aralkyl groups of 8 to 20 atoms of carbon and two or three aliphatic groups (for example methyl) lower, for example, cetyltrimethylammonium bromide.

Examples of suitable bipolar surfactants are can be found among the derivatives of ammonium compounds, aliphatic quaternary sulfonium and phosphonium having a group aliphatic of 8 to 18 carbon atoms and an aliphatic group substituted with an anionic water soluble group, for example: 3- (N, N-dimethyl-N-hexadecylammonium) -propane-1-sulfonate  betaine, 3- (dodecylmethyl-sulfonium) -propane-1-sulfonate betaine and 3- (cetylmethyl phosphonium) -ethanesulfonate betaine Other well-known betaines are alkylamidopropyl betaines, for example, those in which the alkylamido group is Obtained from coconut oil fatty acids.

Other examples of suitable surfactants are compounds commonly used as surface agents assets indicated in well-known texts: "Surface Active Agents "Vol. 1, by Schwartz & Perry, Interscience 1949; "Surface Active Agents" Vol. 2 by Schwartz, Perry & Berch, Interscience 1958; the current edition of "McCutcheon's Emulsifiers and Detergents "published by Manufacturing Confectioners Company; "Tenside-Taschenbuch", H. Stache, 2nd Ed., Carl Hauser Verlag, 1981.

It is particularly preferred that the surfactant be a mixture of anionic and non-ionic surfactants in a ratio of at least 1:10 and more preferably at least 1: 1.

Inflatable polymers

Water swellable polymers are poly (acids acrylics) and polyacrylates, crosslinked acrylate polymers, rubber guar and its derivatives, graft copolymers of starch-acrylic, copolymer hydrolysates of starch-acrylonitrile graft, polyoxyethylene crosslinked, crosslinked carboxymethyl cellulose, swellable polymers in partially crosslinked water such as poly (ethylene oxide) and polyacrylamide, isobutylene / maleic acid copolymers and Similar. Water swellable polymers particularly Preferred are poly (acrylic acids) and most preferred are cross-linked poly (acrylic acids) partially neutralized with sodium salts Water swellable polymers for the present invention are available as solids and liquids and forms preferable are solid forms, such as particulate, granulated, pellas flakes, small needles and the like.

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It is preferred that the water swellable polymer in the composition ranges from 5 to 75%, more preferably from 5 to 50% in composition weight.

Optional ingredients Inorganic particulate ingredients

A solid phase insoluble in the form of particles It is an optional ingredient of the compositions according to the present invention

Preferably, the phase in the form of particles It comprises an abrasive that is insoluble in water. So alternatively, the abrasive can be soluble to some extent and be present in such excess with respect to the water present in the composition when mixed with water before using, which is exceeded the solubility of the abrasive in the aqueous phase and therefore The abrasive exists in the solid phase in the swollen mixture.

The ability to form a gel or paste of inflatable polymers can be reduced in the presence of certain electrolytes For example, calcium ions reduce the capacity swelling of the crosslinked poly (acrylic acid) which is a water swellable polymer. Therefore, although abrasives are chosen and inorganic particulate ingredients, should be taken Be careful to avoid such materials. If its use is absolutely necessary, then these have to be used in quantities minimum

Suitable abrasives can be selected from zeolites in the form of particles, calcites, dolomites, feldspar, silica, silicates and other carbonates, aluminas, bicarbonates, borates, sulfates and polymeric materials such as polyethylene.

Preferred abrasives for use in compositions General purpose cleaning have a Moh hardness of 2 to 6 although for special applications abrasives with a higher hardness

The preferred average particle sizes for abrasives vary in the range of 0.5 to 400 micrometers, values of about 5 to 200 being preferred micrometers

Other optional ingredients

The composition according to the invention can Contain other ingredients that help in your cleansing performance. For example, the composition may contain adjuvants of detergency such as nitrilotriacetates, polycarboxylates, citrates, dicarboxylic acids, water soluble phosphates (such such as polyphosphates, mixtures of ortho- and pyrophosphates), zeolites and mixtures thereof. The compositions according to the invention  they may also contain, in addition to the ingredients already mentioned, various additional optional ingredients such as solvents, dyes, bleaches, optical fanning agents, soil suspending agents, detergent enzymes, agents compatible bleaching agents (in particular hypohalide salts) and preservatives

Inorganic and other ingredients Optional ingredients may be present in an amount of up to 90% of the composition.

Thus, according to a preferred aspect of the present invention, a cleaning composition is provided synergistic comprising:

to)

5-50% of one or more surfactants having at least 40% of the total surfactant weight as a nonionic surfactant

b)

5-75% of one or more Water swellable polymers that absorb more than your water weight Y

C)

optionally, up to 90% by weight, of inorganic particulate ingredients and other ingredients conventional.

Thus, according to a more preferred aspect of the present invention, a cleaning composition is provided synergistic comprising:

to)

5-25% of one or more surfactants having at least 40% by weight of the weight of total surfactant as a nonionic surfactant

b)

5-50% by weight of one or more water swellable polymers that absorb more of your water weight and 10-90% by weight of particulate ingredients inorganic and other conventional ingredients.

The invention will be illustrated below with with respect to the following non-limiting examples.

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Examples i. Effect of polymer-surfactant interaction about gel formation

The compositions presented in Table 1 they were prepared by mixing the surfactant and the polymer. The Products were obtained in the form of powdery dough. They were added 50 g of water to each of these products and allowed to stand for 1 to 2 minutes. Table 1 also shows the visual appearance of the products after the addition of water and the volume of gel obtained.

Measurement of gel volume (ml) after the addition of water in excess

The pasty / dense liquids were transferred formed in Examples 1 to 6 to graduated measuring cylinders of 250 ml separated and the volume was brought up to 250 ml by water addition The contents of the cylinders stirred for a minute and allowed to settle overnight They watched. The contents of the cylinders were separated into two phases (in Examples 1, 2, 3 and 6). The gel formed by the polymer inflatable settling in the bottom while the watery layer was on top. The volume of the gel layer was measured. He volume of gels (in the presence of an amount of water in excess) indicates the gel-forming capacity of the inflatable polymer in the presence of surfactants. It follows that the greater the volume of gel, the lower the negative impact of the surfactant on the inflatable polymer.

TABLE 1

one

The data presented in Table 1 show that the polymer is essential to form a gel and in the presence of non-ionic surfactants, the polymer forms a good solid gel. This shows that the choice of surfactant is important.
When determining the strength of the gel and the volume that in turn determines the consistency of the paste formed.

ii. Effect of the nature of the surfactant on the gel formation

Anionic surfactants and nonionic surfactants in different relationships in compositions described in Table 2 to determine the effect on the formation of the gel. The product was mixed with water and nature was studied of the gel. The measurement of gel volume (ml) after the addition of Excess water was determined by the procedure described above. He behavior was also assessed considering the effectiveness cleaner.

Measurement of cleaning efficiency

1 g of the gel formed was added by adding 100 g of water to 7.5 g of powder at once using a utensil and cleaned a dirty plate. Different cleaning parameters were determined and properties in use during the cleaning operation. Based on overall benefit, the cleaning efficiency was assessed on a scale of 1 to 5 in which "1" refers to "bad" behavior and "5" refers to "good."

TABLE 2

2

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3

The data presented in Table 2 show that the polymer is essential to obtain a consistent gel but that misbehaves with respect to cleanliness (Example 9). When is present only the surfactant in the absence of polymer is not obtained gel and cleansing efficiency is reduced (examples 10 and 11) due to that the polymer helps to disperse the active ingredient. He behavior of the compositions in Examples 7, 8, 12 and 13, in terms of gel formation and cleaning efficiency it indicates that the proper combination of surfactant and polymer is important for obtain a composition that has both optimal cleaning and Good gel strength.

Claims (15)

1. A synergistic cleaning composition that It comprises surfactants and polymer, in which:

to)

is it so one or more surfactants present in an amount of 5 to 95%, in the that at least 40% by weight of the total surfactant is non-surfactant ionic; Y

b)

is it so one or more water swellable polymers present that absorb more of its water weight in an amount of 5 to 95%;

in which the weight ratio of water swellable polymer surfactant varies in the range of 1: 0.4 to 0.4: 1, and in which the water swellable polymer is chosen from the group consisting of poly (acrylic acids), polyacrylates, crosslinked acrylate polymers, guar gum and its derivatives, starch-acrylic graft copolymers, graft copolymer hydrolysates starch-acrylonitrile, cross-linked polyoxyethylene, cross-linked carboxymethyl cellulose, water swellable polymers partially crosslinked such as poly (ethylene oxide) and isobutylene / acid polyacrylamide and copolymer Maleic 2. A composition according to claim 1, in which the water swellable polymer is chosen from poly (acids acrylics) or partially neutralized sodium salts of crosslinked poly (acrylic acids). 3. A composition according to any of the claims 1 to 2, wherein the water swellable polymer constitutes 5 to 75% of the composition. 4. A composition according to claim 3, in which the water swellable polymer constitutes from 5 to 50% of the composition. 5. A composition according to any of the claims 1 to 4, wherein the surfactants are chosen from anionic and nonionic surfactants. 6. A composition according to claim 5, in which the weight ratio of anionic surfactants to non Ionic is at least 0.1: 1. 7. A composition according to claim 6, wherein the weight ratio of anionic to non-ionic surfactant It is 1: 1. 8. A composition according to any of the claims 1 to 7, wherein the composition comprises total surfactants in the range of 5 to 50% of the composition. 9. A composition according to claim 8, in which the composition comprises surfactants in the range of 5 at 25% of the composition. 10. A composition according to any of the claims 1 to 9, wherein the composition is in the form of solid powders, pellets, pellets, cylindrical doughs, pastes or gels 11. A composition according to any of the claims 1 to 10, wherein the water swellable polymer It is in the form of a solid. 12. A composition according to claim 11, in which the water swellable polymer is in the form of particles, granules, pellets, flakes or small needles. 13. A composition according to any one of the claims 1 to 12, wherein the composition further comprises up to 90% of ingredients in the form of inorganic and other particles conventional ingredients 14. A composition according to any of the claims 1 to 13, wherein the composition includes 10 to 90% of a phase in the form of inorganic particles. 15. A composition according to the claims 13 or 14, in which the phase in the form of particles is an abrasive insoluble or partially insoluble in water.