ES2329692T3 - DETERGENT COMPOSITION FOR TEXTILES ASSOCIATED WITH CATIONIC TENSIANS. - Google Patents

Abstract

The present invention relates to a detergent composition for washing laundry containing at least one cationic surfactant which composition comprises one or more nonionic surfactants in an amount of from above 0 wt.% and up to 10 wt.% of the s total composition and which is free of any anionic surfactant and to a method of washing laundry comprising the treatment of laundry containing at least one cationic surfactant with an aqueous solution or dispersion of the detergent composition according to the invention.

Description

Detergent composition for soiled textiles with cationic surfactants.

The present invention relates to a Washing procedure of dirty material containing one or more cationic surfactants with a detergent composition.

In the field of disinfectant cleaning of hard surfaces, cleaning agents used for this purpose they often contain cationic surfactants. These surfactants cationics have the advantage that they can function as Biocidal disinfectants and also show cleaning properties, even though these cleaning properties are not very outstanding. Typically, after cleaning, the materials of cleaning used for surface disinfectant cleaning hard, like mops, flat mop heads or wipes, it they contaminate the dirt that supposedly had to be removed by cleaning and also with ingredients from surfactants used that remain on the tissue or within the same in different quantities after use.

To reduce costs and protect the environment it is normal to use each cleaning material several times and do not throw it away after an application. This requires a thorough cleaning of cleaning materials after each application. However, contamination of the materials of cleaning with cationic surfactants leads to a demand high of the cleaning compositions used to wash the cleaning materials Of course, these compositions of cleaning should be able to remove the dirt that follows containing the fiber after the cleaning process. In addition, the Detergents used in these washing compositions should not interact with detergents of the cleaning composition that It can also be in the tissue or on it.

It is known that the dirt that remains in the tissue because it cannot be removed with detergent washing as well as the interaction products of the ingredients of washing compositions and cleaning compositions carry to an increase in wear and a decrease in the duration of cleaning materials In addition, substances attached to tissues or contained in them deteriorate the optical appearance of those cleaning materials and induce an impression unhygienic, even after a few applications and cycles washing

The interaction products mentioned previously they can, for example, be the result of a reaction of the cationic surfactants used in the cleaning process, and that continue to contaminate cleaning materials, and anionic surfactants contained in normal detergents used for washing cleaning materials. Thus they form the so-called electroneutre salts, which can be deposited on the cleaning materials or within them. These deposited deposits can destroy the tissue, decrease the absorbency of the textile cleaning material in cleaning processes additional and also increase tissue aging due to the inclusion of pigments in it or the adhesion of said pigments on it.

According to the technique, it is expected that at least problems regarding the formation of interaction products that are deposited on or within the tissue are resolved including a pre-rinse stage before starting the process real wash. However, as it is known that surfactants Cationics have a strong tendency to adhere to tissues making these useful as cationic textile auxiliaries and fiber finishing agents, thorough rinsing is necessary to remove cationic surfactants from tissues. This not it is an attractive procedure considering the general tendency to save resources, energy and costs.

EP 0913117 A1 addresses the problems of the interaction between the wash solution and the solution of cleaning. This document solves this problem using a solution wash that has the same composition as the solution of cleaning. Therefore, according to the explanations described in this document, cleaning materials are impregnated with a solution cleaning that basically has the same composition as the wash solution immediately after completing the washing process to provide ready cleaning materials For use they already contain a cleaning solution.

EP 0913117A1 also mentions that it may not be possible to use any washing detergent additional at all, since the cleaning material continues containing enough washing or cleaning agents that can be used However, depending on the duration of the procedure cleaning and the degree of dirt on the surface to be clean, the amount of washing or cleaning detergent left on the cleaning material will probably differ so that, if no additional detergent is added during the procedure of washing, there may not be the necessary amount of detergent washing to remove dirt from cleaning materials. By consequently, using a washing composition that does not contain No additional detergent does not guarantee good performance of constant washing

However, in the event that the solution of cleaning does not show proper washing properties and this cleaning solution suits a specific application for the which cleaning solutions are not appropriate, the procedure Previous is not applicable. This is, for example, the case when they use cationic surfactants as the main detergent in the solution is cleaning, since these surfactants normally show comparatively bad washing properties.

EP 181345 A1 also mentions the negative effects in connection with the mechanical wear of the cleaning materials due to the dirt embedded in said materials. In this document, the duration of the cleaning materials and the destruction of these is reduced materials produced by wear using complexing agents. However, this will not be useful when considered inlays caused by the interaction of a surfactant cationic with other components of the wash compositions, as anionic surfactants.

Therefore, the problem underlying this invention is to provide a material washing procedure dirty and, especially, textile materials, used for a disinfectant cleaning, containing the dirty material at least one cationic surfactant in the tissue.

The problem mentioned above is solved by a method of washing dirty material comprising a treatment of the dirty material that contains at least one cationic surfactant with an aqueous solution or dispersion of a detergent composition containing at least one surfactant cationic, this composition comprising one or more surfactants nonionic in an amount of about 0% by weight and up to 10% by weight of the total composition and it does not contain any anionic surfactant.

The inventors of the present invention have found that, surprisingly, cleaning supplies are contaminated with cationic surfactants because, due to its use for disinfectant cleaning, they still contain surfactants cationic in your tissue even after rinsing Extremely thorough with water. This refers especially to tissues with a high cellulose content. The inventors of the The present invention has also appreciated that the trend of cationic surfactants to bind to tissues is so strong that even the tissues that by themselves are not contaminated with cationic surfactants before being placed in the device washing, but washing in the same washing process as the contaminated tissue, they are also contaminated with surfactants cationic after washing process. This means that, entering in contact with the wash solution containing the cationic surfactants removed from previously washed tissues, The tissues are contaminated with these surfactants. Therefore, the presence of cationic surfactants in the wash solution or in the tissue, in addition to the presence of anionic surfactants in the washing process, can lead to inlays on the textile materials or within them comprising salts neutral of cationic and anionic surfactants.

However, a washing detergent that does not Contains no anionic surfactant can prevent the formation of inlays formed by the interaction of surfactants cationic and anionic on or within the tissue that was previously contaminated with cationic surfactants.

The amount of non-ionic surfactant contained in the washing detergent can be reduced due to the presence of cationic surfactants in the cleaning article. Although cationic surfactants do not represent the typical ingredients of washing compositions because they reduce their washing efficiency, by less its presence is enough to reduce the amount of nonionic surfactants necessary to obtain good ones wash results. However, the presence of non-ionic surfactants in the washing detergent to ensure that cleaning items that contain only quantities small cationic surfactants due, for example, to the type Application will also be cleaned sufficiently. Further, even if there is a greater amount of cationic surfactant in the wash solution, the additional non-ionic surfactant is made necessary since, typically, the dirt inside the tissue is not It will remove enough with only cationic surfactants.

Although it is preferable to use only one non-ionic surfactant, it is also possible to use a mixture of two or more different nonionic surfactants. Preferably, the Total amount of non-ionic surfactants present in the detergent compositions range from 2-8% by weight, more preferably 4-6% by weight.

The type of non-ionic surfactant used in The present detergent composition is not specifically limited. However, especially in the case where the cleaning composition, together with the cationic surfactant, also contain non-ionic surfactants which in turn are contained in the fabric, or in the case that the materials of cleaning are heavily contaminated with cationic surfactants, it is it is preferable to use one or more nonionic surfactants that form low foam Examples of these alcohol compounds may be C 10 -C 18 ethoxylated and / or propoxylated fatty acids containing 1 to 8 ethylene oxide residues and 0 to 8, preferably from 0 to 4, propylene oxide moieties in the molecule. Preferably, the remaining fatty alcohol comprises 12 to 16 carbon atoms and, more preferably, 12 to 14 atoms carbon The number of units of ethylene oxide in alcohol Fat preferably ranges from 2 to 6 and, even more preferably, It is 5.

It is also possible to use other surfactants non-ionic which are generally known as low formators foam, such as C 12 -C 18 fatty alcohols ethoxylated and butoxylated, or only butoxylated, containing from 1 to 8 residues of ethylene oxide and 1 to 8 residues of butylene oxide, or only 1 to 8 ethylene oxide residues, in the molecule thus other other mixtures of alkyl poly (alkylene glycol) ethers, whose termination may be additionally protected.

It is preferred that the detergent composition contain one or more complexing agents in a total amount of 0.2 to 15% by weight of the total composition, preferably of 0.5-10% by weight, even more preferably from 0.8 to 2% by weight In case the detergent composition is present any type of phosphate, this will not be considered as an agent complexing in the present specification, but an adjuvant. They can be examples of complexing agents suitable for use in the process of the present invention acid nitrilotriacetic and ethylenediaminetetraacetic acid.

Other appropriate complexing agents are Methylglycine diacetate and alkaline salts of phosphonic acids, how 1-hydroxyethane-1,1-diphosphonate, diethylenetriaminepentamethylene phosphonate or phosphonate of ethylenediaminetetramethylene.

Other complexing agents may be represented by hydroxycarboxylic acids, such as acid monohydroxysuccinic, dihydroxysuccinic acid, acid alpha-hydroxypropionic, citric acid, acid gluconic as well as its salts, especially its alkaline salts, and mixtures thereof. Citrate is preferably used in trisodium citrate form dihydrate.

The presence of these complexing agents is preferably advantageous to reduce the formation of others inlays on the cleaning tissues or within them other than neutral salts composed of anionic surfactants and cationic.

The detergent composition may contain additionally one or more different additives that are normally used in washing detergents as inhibitors of aging, alkaline sources, bleaching agents, activators of bleaching agents, adjuvants, defoamers and bleaching agents Optical Although biocidal agents may also be added, due to the biocidal effect of cationic surfactants present in the washing solutions in most cases this will not be necessary.

Aging inhibitors should be present in an amount of 0.1-5% by weight of the total composition, preferably 0.5 to 3% by weight. The object of aging inhibitors is to keep dirt removed from the tissue suspended in the solution and prevent it from deposit again. They can be examples of inhibitors of Appropriate aging salts of polymeric carboxylic acids Water soluble, glue, gelatin, acid ether salts starch or cellulose carboxylic acid salts of acids starch or cellulose sulfuric acids or acid salts of acid esters cellulose or starch sulfuric acid. They are also appropriate for this end polyamides containing water soluble acid groups. Also soluble starch products can be used as well as starch products other than those mentioned above, such as decomposed starch, starch aldehydes, etc. It is also suitable polyvinylpyrrolidone. However, it is preferable use cellulose ethers, such as carboxymethyl cellulose, especially in the form of its sodium salt, methylcellulose, hydroxyalkylcellulose and mixtures of ethers such as methylhydroxyethylcellulose, methylhydroxypropylcellulose, methyl carboxymethyl cellulose and mixtures thereof.

As an adjuvant contained in the composition detergent can be used any substance known in the art, in the broadest sense, as an appropriate adjuvant for washing and cleaning detergents as well as mixtures thereof. This also includes coated adjuvants that are even preferred in case of bleaching agents that They contain chlorine. Appropriate adjuvants can also be complexing agents similar to those mentioned above. In addition to the previously mentioned complexing agents that they can function as adjuvants, compounds such as sodium hydroxide and sodium tetraborate. They can also be used as adjuvants in the present phosphate detergent composition alkalines that may occur in the form of their sodium salts or potassium, such as tetrasodium diphosphate, pentasodium triphosphate, sodium hexametaphosphate and the corresponding potassium salts as well as mixtures thereof.

They can be examples of other components water soluble adjuvants native organic polymers or synthetic, especially polycarboxylates. For example, you can polyacrylic acid, maleic anhydride copolymers and acid used Acrylic as well as its sodium salts. The commercial products of they are represented, for example, by Sokalan® CP 5 and PA 30 from BASF, Alcosperse® 175 and 177 from Alco, LMW® 45 N and SPO2 ND from Norsohaas, Acusol 497 NG of Rohm & Haas. They can be an example of appropriate native polymers oxidized starch (for example, as described in DE 4228786) and polyamino acids as polyglutamic acid or polyaspartic acid, for example, from Gygnus, Bayer, Rohm & Haas, Rhodia or SRCHEM.

Other examples of appropriate adjuvants are amorphous metasilicates or layered silicates. Can also be used layered crystalline silicates in case they are sufficiently stable against alkalis. The Clariant company, Germany markets crystalline silicates in appropriate layers with the name Commercial Sodium-SKS, as Sodium SKS-1 (Na_2 Si_ {22} O_ {45} x H2_0, Kenyait) Na-SKS-2 (Na_ {Si} {14} O_ {29} x H2_, Magadiit), Na-SKS-3 (Na_ {Si} {8} O_ {17} x H2O), Na-SKS-4 (Na_ {Si} {4} O_ {9} x H2_, Makatit), Na-SKS-5 (α-Na 2 Si 2 O 5), Na-SKS-7 (β-Na 2 Si 2 O 5, Natrosilit), Na-SKS-11 (γ-Na 2 Si 2 O 5) and Na-SKS-6 (δ-Na_ {2} Si_ {2} O_ {5}).

The adjuvants may be present in a total amount of 20-80% by weight of the composition total, preferably 25-50% by weight.

Bleaching agents appropriate for use in the process of the present invention they are represented, for example, by sodium perborate, also in the form of its hydrate, or sodium percarbonate, as well as chlorine bleaching agents, as acid amide N-chloro-p-toluolsulfonic, trichloroisocyanuric acid, alkali dichloroisocyanurate, alkaline hypochlorite and agents that release alkaline hypochlorite or mixtures thereof, with those being especially preferred bleaching agent compositions that are stable against alkalis With regard to alkali stability, it may be the substances show this stability by themselves or the components can be stabilized by appropriate procedures as surface coating or surface passivation. Preferably, the bleaching agents are in an amount of the 5-30% by weight of the total composition, plus preferably 10-20% by weight.

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The detergent composition may also contain additionally one or more activators of bleaching agents. This allows the wash temperature to be reduced to temperatures lower, for example, at wash temperatures in the range from 40 to 70 ° C, compared to the use of bleaching agents without activators The appropriate bleaching agent activators they are represented by tetraacetylethylenediamine (TAED), tetraacetylglucoluril (TAGU), nobs, isonobs, as well as mixtures of same. Preferably, bleach agent activators they are in the composition in a total amount of 0.5 to 10% by weight based on the total composition, more preferably from 2 to 5% in weight.

In case the presence of optical brighteners can be used, for example, acid salts 4,4'-bis (2-anilono-4-morpholino-1,3,5-triazine-6-amino)  stilbene-2,2'-disulfonic or similar compounds, which contain a diethanolamine group, a group methylamine, an aniline group or a group 2-methoxyethylamine instead of a morpholino group. Other suitable optical brighteners are of the diphenylstyryl type. substituted, as alkaline salts of 4,4'-bis (2-sulfoestyryl) diphenyl, 4,4'-bis (4-chloro-3-sulfoestyryl) diphenyl  or 4- (4-Chlorostyril) -4 '- (2-sulfoestyryl) diphenyl Mixtures of any of these compounds may also be applied. Preferably, the optical brighteners in the composition detergent are in a total amount of 0.1-10% by weight based on the total composition, even more preferably of the 0.5-5% by weight.

Although the consistency of the present detergent composition is not especially limited and this can show, for example, a liquid or pasty consistency, is a solid consistency is preferable and the most preferred represents a powder. Other forms of solid application are also possible generally known as tablets or solid blocks solid. Therefore, the composition preferably contains less 15% by weight of water, more preferably less than 10% by weight and, in the most advantageous case, it does not contain water.

It is preferable that the solution or dispersion aqueous contains the detergent composition in a concentration of 3-10 g / l based on the total solution or dispersion, more preferably 4-7 g / l. Typically, the procedure is performed using a temperature wash medium from 30-90º, preferably from 40-70 ° C and the washing process, preferably, It is completed by mechanical treatment.

In a preferred embodiment, the dirty material it is not cleared before the washing process or the prewash process No detergent added. As the inventors of the present invention found that even lightening tissues Contaminated with cationic surfactants are not removed completely cationic surfactants, rinse before washing or prewashing process does not prevent the formation of inlays in the form of neutral salts of anionic surfactants and cationic in case the washing detergent contains anionic surfactants. However, according to the present invention, The detergent composition does not contain any anionic surfactant. Therefore, it is not necessary to prewash or pre-rinse the fabric contaminated before the actual washing stage.

This allows to reduce the amount of water necessary to clean the dirty material and, consequently, Save resources and energy. This also leads to less wear. of the dirty material since centrifugal drying is avoided which additionally wears dirty material.

In addition, as it is known that surfactants cationics do not show remarkable wash properties when not an additional detergent is added, the pre-rinse or the pre-wash not They will be very effective. However, the surfactant combination cationic clean tissue and non-ionic surfactant used in the washing composition allows to reduce the amount of nonionic surfactants and, at the same time, provides a good washing performance

It is also an advantage not to eliminate the cationic surfactant of the cleaning tissue used in one stage  pre-washed or pre-cleared, but only in the main stage of washing, since the cationic surfactant shows properties biocides and, therefore, the addition of more agents can be avoided biocides

The dirty material that can preferably washing according to the present invention method comprises textile materials that are used to clean surfaces. These Cleaning materials can be made of natural materials, man-made materials or mixture of both. The best effect of reducing scale caused by salts Neutral anionic and cationic surfactants can be seen if the materials that are used have, comparatively, a charge high negative surface that induces high chemoabsorption as is the case, for example, with cotton materials.

Examples of textile cleaning materials that often contaminated with cationic surfactants include mops, cloths and cloths.

As such cleaning materials are used, normally, in the field of commercial cleaning, it is preferable that these materials are collected and washed separately, preferably, in commercial laundries.

The detergent composition and the process of The present invention show several advantages:

The absence of any anionic surfactant prevents the formation of scale containing salts neutral of anionic and cationic surfactants. This has effects both economic and ecological since, for example, they can Pre-rinse or pre-wash steps are avoided and the duration improves as well as the optical appearance of the cleaning materials. In addition, the amount of non-ionic detergent can be reduced necessary to achieve good cleaning performance. For other part, the absorption of the textile material can increase considerably since the necessary space in the tissue is not occupied by the inlays. In addition, a reduction is observed of tissue aging as it decreases the inclusion of pigments within the encrustations or adhesion of pigments to these inlays.

The present invention will be described more in detail by the following examples. If not indicated otherwise,% refers to% by weight.

Examples

The following wash tests were performed with the following washing compositions:

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TABLE 1

one

Compositions A and B according to table 1, are They used to wash mops. Two different types of materials for mops.

RTX 5 S = 50% cotton + 50% polyester

RCT 5 P = 20% cotton + 60% polyester + 20% microfiber with> 1DETX.

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Terms

Group (a): mops were previously soaked for 22 hours in an aqueous solution of Incidin plus 2% (cationic surfactant having a quaternary ammonium group).

Group (b): in the control group, the mops are not They were soaked previously.

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In each of the four washing tests, they washed 12 mops of each group at the same time. Each mop underwent at 25 cycles that, depending on the group, included prior soaking and wash or just wash. Each wash cycle lasted 20 minutes and was performed at a temperature of 60 ° C. The compositions A and B were used as detergents in the form of an aqueous solution formed during the washing process at a concentration of 5 g / l

In a wash test, 12 mops of the first material for mops belonging to group (a) and 12 mops of the same material belonging to group (b) were washed at the same time with the solution of composition A at the indicated concentration previously. In another example, another 24 mops were washed with one solution of composition B. The same tests were performed using mops of the second mop material.

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The mops were weighed before treatment. The amount of scale deposited on the mops or inside of these was determined by weighing them again after 25 cycles of treatment. The following weights were obtained:

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TABLE 2

2

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These test results demonstrate the superior performance of composition A, which does not generate any Embedding in any type of mop. Washing composition normal B induces serious encrustation close to 60% in mops with high cotton distribution and 27% in mops with a cotton distribution of less than 20%.

These data also show the high substantivity of cationic surfactants. Even mops that function as a control group and that have not been soaked show an increase in weight indicating the generation of scale. It is assumed that inlays are formed when these mops are washed with the normal detergent B containing a anionic surfactant due to a reaction with the surfactants cations that are removed during the washing process of mops previously soaked and deposited on the mops They were not soaked previously. Therefore, mops that are not they contaminate with cationic surfactants before the washing process show inlays after said washing process in which anionic surfactants are used.

Claims (12)

1. Procedure for washing dirty material that comprises a treatment of the dirty material that contains at least a cationic surfactant with an aqueous solution or dispersion of a detergent composition, which contains one or more nonionic surfactants in an amount of about 0% in weight and up to 10% by weight of the total composition and which no It contains no anionic surfactant. 2. Method according to claim 1 characterized in that the composition contains the non-ionic surfactant in an amount of 4 to 8% by weight. Method according to claim 1 or 2, characterized in that said one or more non-ionic surfactants are non-ionic surfactants that form a low foam. Method according to any one of claims 1 to 3, characterized in that the detergent composition additionally contains one or more complexing agents in an amount of 0.2 to 15% by weight of the total composition. Method according to any one of claims 1 to 4, characterized in that the detergent composition additionally comprises one or more components selected from the group consisting of aging inhibitors, alkaline sources, bleaching agents, bleaching agent activators, adjuvants, defoamers and bleaching agents. Optical Method according to any one of claims 1 to 5, characterized in that the detergent composition has a solid consistency. Method according to any one of claims 1 to 6, characterized in that the aqueous solution or dispersion contains the detergent composition in a concentration of 3 to 10 g / l based on the total solution or dispersion. 8. Procedure according to any of the claims 1 to 7 wherein the dirty material comprises textile cleaning materials. 9. Method according to claim 8 characterized in that the textile cleaning materials comprise natural materials, man-made materials or mixtures thereof. 10. Procedure according to any of the claims 1 to 9 wherein the dirty material comprises mops, cloths and cloths. Method according to any one of claims 1 to 10, characterized in that the treatment of the dirty material takes place at a temperature of 30 to 90 ° C, preferably 40 to 70 ° C. 12. Method according to any of claims 1 to 11 characterized in that it is applied to commercial laundries.