DK156305B - METHOD AND PROCEDURES FOR THE TREATMENT OF WASHED LAUNDRY - Google Patents

Abstract

1. A liquid after-wash treatment preparation having fabric softening, souring and anti-chlorinating properties and containing a fabric-softening quaternary ammonium compound, an inorganic or organic acid or acidic salts as the acidic compound, hydrogen peroxide or organic percarboxylic acid as reducing agents for chlorine end chlorine compounds of positive valency and, in addition, a stabilizer for peroxy compounds, characterized in that the stabilizer is 1-hydroxy-ethane-1,1-diphosphonic acid and/or hydroxy ethylenediamine triacetic acid or an alkali salt thereof, with the proviso that the quantity of the acidic compound is selected so that the pH value of the preparation is at most 4.

Description

DK 156305 B

in

The present invention relates to a liquid detergent aftertreatment agent having textile blood-soothing, acidifying and anti-chlorinating properties containing a textile blood-soaking quaternary ammonium compound, an inorganic or organically acidic or acidic saline acidic compound, hydrogen peroxide or organic percarboxylic acids, as reducing agents with a positive valence, and additionally a stabilizer for peroxy compounds, as well as a process for simultaneous blood purification, neutralization of alkaline detergent residues, removal of active chlorine and optionally to make freshly washed laundry antimicrobially in aqueous washing liquid.

In commercial laundries, highly alkaline detergents are usually used. Bleaching usually occurs with hypochlorite. Va-15 spoon and bleach residue, which hangs from the washed laundry after the last rinsing process, is not economical to remove alone by rinsing. However, the removal of these residues is necessary, e.g. to prevent skin irritation and to remove an unpleasant chlorine-20 odor arising from hypochlorite. Hypochlorite or chlorine residues also damage the textile fibers.

The last rinsing bath is therefore added to an agent with acidic and / or reducing ingredients by means of which, for example, controlling detergent and bleach residues are converted into non-interfering compounds. In many cases, it is also desirable7 that washed laundry after drying has a comfortable soft grip. This is especially true for laundry that rests on the skin and for terry cloth. Occasionally, it is also necessary7 for textiles, e.g. towel rolls, are provided with bacteriostatic agents.

For this reason, in the last rinse bath, treatment is often completed with a fabric softening agent and / or with 35 antibacterial active substances in aqueous wash solution or by the subsequent drying process in an automatic laundry dryer.

2

DK 156305 B

Treatment of laundry generally requires several "acidification" work processes, i.e. neutralization of alkaline residues, and "antichlorination" (reduction) as well as to make wash clothes soft or antibacterial. Agent and method by which it is possible to simultaneously acidify and antichlorate freshly washed laundry and a finishing treatment with textile softeners or antibacterial active substances in a working process. therefore represents a considerable simplification of the laundry aftercare in commercial laundries.

10

The agents and methods known from U.S. Patent Nos. 3,193,505, 3,676,353, 3,925,230, 3,984,335, 4,053,423, 4,089,786, 4,115,281 and DE-A 29 04 876.8 do not or do not fulfill only the requirement for uniformly good blood purification or antibacterial equipment, acidification and antichlorination in a working process, or the agents are poorly dosed automatically as they are available as powders. In itself - because of the liquid dispensing dispensers usually available in commercial washing machines - it is desirable to work with liquid finishing agents, such as for example. can only be produced by solubilizing powdery agents for a stock solution, mostly because of the poor solubility or insufficient solubility or dispersion stability of the known finishing agents for use in commercial liquids. Known liquid agents do not exhibit simultaneously acidifying, antichlorinating and bleeding properties.

The agents known from US Patent No. 4,166,794 contain 30 as stabilizers for per-compound EDTA. A further disadvantage of many known agents is e.g. also in the deposition of salt-like constituents from these agents on the fabrics, thereby affecting the carrying properties and durability of the textiles. In addition, when they enter the cavity of a washing-ice roll, these deposits can cause disturbance there.

The object of the present invention, therefore, is to provide a liquid detergent aftertreatment agent with

DK 156305 B

3 textile antifouling, acidifying and antichlorinating properties, containing a textile bleaching quaternary ammonium compound, an acidic compound and a reducing agent.

This is achieved by the invention by means of a liquid detergent finishing agent having textile bleaching, acidifying and antichlorinating properties, containing a textile bleaching quaternary ammonium compound, an inorganic or organic acid or acid salts such as acidic compound, hydrogen peroxide or organic percarboxylic acid and positive valence chlorine compounds, and additionally a peroxy compound stabilizer, which laundry detergent is characterized in that the stabilizer is 1-hydroxyethane-1,1-diphosphonic acid and / or hydroxyethylenediaminetriacetic acid or alkali salts thereof, with provided that the amount of the acidic compound is chosen such that the maximum pH of the agent is 4.

In addition, the agent may contain antibacterial active substances. In addition, any usual additives such as e.g. dispersants, foam control agents, colorants and fragrances are contained in the agent. As a liquid carrier, water, possibly with the addition of small amounts of organic solvent, comes in quickly.

25

By using the agent of the invention for the treatment of washed laundry dough, it is possible to simultaneously neutralize alkaline detergent residues adhering to the laundry after the washing and rinsing process, to reduce hypochlorite bleach residue, to provide a comfortable wash. blood seizures and anti-static conditions after drying and possibly antibacterial them, thereby simultaneously reducing the formation of deposits on the fabrics. Accordingly, the agent according to the invention is conveniently and accurately dosed automatically.

35

As textile softening agents, quaternary ammonium compounds having preferably two long chain, preferably saturated aliphatic groups each of 14-26 are preferably

DK 156305 B

4, preferably 16-20, carbon atoms, and at least one quaternary nitrogen atom in the molecule are suitable. The long-chain aliphatic groups may be straight-chain or branched, and consequently are derived from fatty acids or from fatty amines, guerbetamines or from the alkylamines obtainable by reduction of nitroparaffins.

These quaternary ammonium compounds are particularly ammonia derivatives, ie. whether the quaternary salts obtained by alkylation of long chain secondary amines such as e.g. the compounds distearyl dimethyl ammonium chloride or ditalgalkyldimethyl oxime sodium chloride, or if by reaction of 1 mole of an aminoalkylethylenediamine or hydroxyalkylethylene diamine with 2 moles of a long chain fatty acid or from its ester, the imidazoline compound is obtained by passing them as therefor. In these quaternary ammonium compounds, the anion is usually composed of the acid residue obtained from the alkylating agent used in the quaternization. Eg. For example, chloride, bromide, methyl sulfate, ethyl sulfate, methane, ethane or toluene sulfonate are considered anion. In addition to these quaternary ammonium compounds, the condensation products also come from 1-3 moles of fatty acid alkyl ester or 1/3 to 1 mole of fatty acid triglyceride with 1 mole of a hydroxyalkyl polyamine, e.g. hydroxyethyl ethylene = diamine or hydroxyethyl diethylenetriamine, recital 25 as fabric softener. Particularly suitable is the product obtainable by reacting 1 mole of a fatty acid triglyceride, especially cured tallow, with 1 mole of hydroxyethyl ethylenediamine at 90-150 ° C. Preferably, as a fabric softener, a quaternary ammonium compound of the ammonia type is used with 2 C 16 -C 2 These active substances, in the textiles treated, lead to a uniformly marked improvement in the grip with simultaneous anti-static equipment without staining.

5

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By acidic compounds is meant inorganic acid: such as, in particular, orthophosphoric acid, acid salts of orthophosphoric acid / such as e.g. sodium dihydrogen phosphate, non-surfactant organic acids having 1-8 carbon atoms, such as amidosulfonic acid, urea compounds of orthophosphoric acid, boric acid ^ oxalic acid, lactic acid, glycolic acid, citric acid, tartaric acid, benzoic acid, phthalic acid, gluconic acid, formic acid, acetic acid and propionic acid, and sulfobenzoic acid or optionally acidic alkali salts thereof. Glycolic acid, citric acid, formic acid, acetic acid, lactic acid and tartaric acid are preferred organic acids because of their ease of access and non-toxicity. Also one of adipic acid, glutaric acid and succinic mixture is useful as an acid additive. The particularly preferred orthophosphoric acid (HgPO ^) may also be added together with sodium dihydrogen phosphate as an acidifying agent. The agent according to the invention contains so many acidic additives that the pH value of the agent is at most 4. Depending on the desired acidification effect, the agent contains different quantities of acidic substances, so that the pH value can also be considerably lower, e.g. . by one or less.

Laundry, which has been treated with a hypochlorite-based bleach, is frequently adhered to a weak chlorine odor. In order to remove this chlorine odor from the laundry pieces, the agent according to the invention preferably contains hydrogen peroxide (H2O2) as an antichlorinating component. H2O2 acts as a reducing agent against the stronger oxidant hypochlorite. Instead, organic percarboxylic acids, such as, for example, diperazelaic acid or diperisophthalic acid, can also be used.

Hydrogen peroxide is preferred because of its easy accessibility and because it is reduced to the present water by reduction. A further advantage of H2O2 is that it cannot form any solid deposits.

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In order to stabilize the agent of the invention against heavy metals, especially copper and / or iron ions, the agent contains as a stabilizer 1-hydroxyethane-1,1-diphosphonic acid and / or hydroxyethylenediaminetriacetic acid or alkali salts thereof.

5

Among the antimicrobial active substances which the agent according to the invention may contain, are understood bactericidal or bacteriostatic or fungicidal or fungistatic-acting compounds. Furthermore, these active substances must be water soluble as such or in the form of their salts. The antimicrobial active substances which are suitable as additives are e.g. about such quaternary ammonium compounds which, in addition to a long chain aliphatic and two short chain aliphatic hydrocarbon groups, contain an aromatic, via an aliphatic carbon atom attached to the nitrogen atom, or an aliphatic, double bond containing organic group in the molecule. Examples of such antimicrobial quaternary ammonium compounds are the following: -benzyl octylamino = nixuachloride, dibutyl-allyl, methylethylbenzyl, ethyl = cyclohexylallyl, ethylcrotyldiethylaminoethyl-dodecylam = monium chloride, and especially coconutalkyldimethylbenzylammonium chloride. Dimethyldidecylammonium chloride is also effective,

In addition, other antimicrobial active substances are also useful in that they are resistant in the presence of perfume compounds in acidic medium. This includes e.g.

betainer, such as dodecyl di (aminoethyl) glycine. Other useful antimicrobial agents are e.g. hexamethylene bis (chlorophenyl) biguanide digluconate or dihydrochloride and dodecylglycine.

35

As dispersants, such as those which may be contained in the liquid textile finishing agents of the invention, are particularly suitable for the nonionic surfactants ("nonionics").

These include products whose hydrophilic properties are due

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7 the presence of polyether chains, amine oxide, sulfoxide * or phosphine oxide groups, alkylolamide groupings, or generally an accumulation of hydroxyl groups. Such Nonionics contain in the molecule at least one hydrophobic group of 8 ~ 26, preferably 10-20 and especially 12-T8, carbon atoms, and at least one non-ionic, solubilizing group. The predominantly saturated hydrophobic group is mostly aliphatic, possibly also alkaline by nature ·; it can be connected directly to the solubilizing groups or via an intermediary. For example, i-komx, e.g. benzene rings, carboxylic acid esterx- or cafbonamidegroup -ethered or ester-like linked groups of polyhydric alcohols, such as e.g. of ethylene glycol, propylene glyco 1, glycerol or similar polyether groups. Typical -soin dispersants preferred Nionics are e.g. the addition products of approx. 9 moles of ethylene oxide with nonylphenol or dodecyl alcohol, polyethylene glycols with up to 50 ethoxy units or polyethoxy p o 1 y p r o p.x y g 1 y.c; o le r with up to 20 ethoxy or propoxy units.

20

The content of the medium according to the invention of the most important components according to the invention lies in what is most emphasized in the application, ie. ascertain whether the agent should have particularly pronounced textile softening or acidifying or antichlorinating (= hypochlorite reducing) properties or possessing particularly distinct combinations of these properties, in the following quantities; a) 1-20 wt% textile softening quaternary ammonium ^ 30 compounds b) 1-50 wt% acidic compounds c) 1-25 wt% hydrogen peroxide or organic per carboxylic acids d) 0.1-10 wt% stabilizer e) 0 - 15% by weight of antimicrobially active substances, residual water, as well as, if necessary, small amounts of disintegrating agents, foam regulators or other usual additives.

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8

The agent of the invention preferably has the following composition: a) 2 - 7 wt% of a textile softening quaternary ammo = 5 nium compound b) 2 - 40 wt% acidic blends c) 1 - 15 wt% hydrogen peroxide or organic percarb = oxyacids d) 0 , 2-3 wt% stabilizer ·: · 10 e) 0.5-7 wt% of an antibacterial active substance residual water, as well as any dispersant in small quantities. '

Preferably, as textile softening quaternary ammonium compounds, especially the widely used compounds are dimethylditalgalkyl ammonium chloride or dimethyl = distearylammonium chloride, of which dimethyldistearylammonium = chloride is particularly preferred. As antibacterial agents, quaternary ammonium compounds are preferred, especially coconutalkyldimethylbenzylammonium chloride. In particular, for antichlorination, hydrogen peroxide is used, which in the presence of heavy metal complexes has sufficient stability. Suitable stabilizers, by means of which both the hydrogen peroxide is stabilized as well as a decolourization of the laundry using antifouling washing and rinsing water with an inherently disruptive content of heavy metal ions, are hydroxyethyl endi amidic acid and / or 1-hydroxyethane-1,1-diphosphonic acid or their alkali salts. The compositions of the invention contain, especially when larger amounts of textile quaternary ammonium compounds to obtain a pronounced blood-soothing effect, suitably low amounts, e.g. 0.5-5% by weight of nonionic surfactant as a dispersant.

35

Agents of the following composition exhibit particular well-proportioned properties:

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9 a) 2-7 wt% dimethyldistearylammonium chloride b) 2-40 wtS orthophosphoric acid c) 1-15 wtS hydrogen peroxide d) 0.2-3 wtS l -hydroxyethane-1,1-diphosphonic acid e) 0.5 - 7 wtS cocosalkyldimethylbenzylammonium chloride residual water, as well as non-ionic surfactant as dispersant in low quantities.

The invention further relates to a process for simultaneous softening, to remove active chlorine and to neutralize alkaline detergent residues and optionally to provide freshly washed laundry with antibacterial agents. The procedure is characterized by treating the wash dough in the last rinsing process with 0.5 to 20 g per minute. per liter of a composition having the above-described composition, to which the rinsing bath is added, for 0.5 to 5 minutes with continuous movement at ca. 10 to 30 ° C. Then the treatment liquid is separated, e.g. by pressing or centrifuging until a residual humidity of approx. 10 to approx. 100 weight S, calculated on the dry weight of the laundry. The washing is then washed, for example. diced in a laundry detergent and possibly rolled. It has a blood grip after drying. In addition, it is free of alkaline detergent residues. A chlorine odor can no longer be detected. In the acidic after-treatment, the coating, which appears at the mold inclusion, is deteriorated by ash-forming components attached to the fibers. The laundry so treated also exhibits favorable antibacterial properties.

Example 1.

In a container with a powerful stirrer, a) 3 wt% dimethyldistearyl ammonium chloride b) 15 wt% orthophosphoric acid 35 c) 1 wt% hydrogen peroxide d) 1 wt% hydroxyethylenediaminetriacetic acid residual water

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10 mixed. A stable, almost clear liquid with a pH of 1. A liquid rinse bath of 5 g / ml was added to the final rinse bath from a commercial washing machine. liter of rinsing water of approx. 25 ° C and thus treated the washed with ® hypochlorite bleached laundry for approx. 2 minutes. After centrifugation of this treatment liquid, it was possible to determine, by means of a pH ± measurement of the pending moisture, that the alkaline detergents in the laundry were neutralized. The laundry no longer had any chlorine odor. After the drying it had a soft full grip.

Similar results were obtained when replacing the phos = phoric acid with an amount equivalent to acidity

NaH2P04.

15

Examples 2 to 4.

In a similar manner, the composition of the invention having the following composition was prepared and tested; 20

Ingredient .. ..... .. .. 2. 3 4

Dimethyldistearylammonium chloride. 5

Methyl 1- (cured tallow alkyl) - amidoethyl 2- (cured tallow alkyl) - 7.5 imidazolinium methosulfate

Orthophosphoric acid 5 15 5

Hydrogen Peroxide 1-Hydroxyethane-1,1-diphosphonic acid. 1.5 1 1 OU _____ * \ _ _ _____

Residual water __ The treated laundry, after centrifugation of the treatment liquid and drying in an automatic laundry dryer, had the same advantageous properties as described in

Claims (8)

25 Patent claims. 1. Liquid Laundry Detergent with Textile Antifouling, Acidizing and Antichlorinating Properties, Containing a Textile Softening Quaternary Ammonium Compound, an Inorganic or Organic Acid or Acidic Salts as Acid Compound, Hydrogen Peroxide or Organic Percarboxylic Acids positive valence, and furthermore a stabilizer for peroxy compounds, known as -35, characterized in that the stabilizer is 1-hydroxyethane-1,1-diphosphonic acid and / or hydroxyethylenediinedineacetic acid or alkali salts thereof, provided that the amount of the acidic compound is is added such that the maximum ρΗ value of the agent is 4. DK 156305 B An agent according to claim 1, characterized in that it contains: a) 1-20% by weight of textile softening ammonia = ® compounds b) 1-50% by weight acidic compounds c) 1-25% by weight hydrogen peroxide or organic per carboxylic acids d E) 0 - 15% by weight of stabilizer 10 e) 0 - 15% by weight of antimicrobial active substances, residual water, and, if necessary, small amounts of disinfectants, foam regulators or other usual additives. 15 3. A composition according to claim 21, characterized in that it contains: a) 2-7 wt% of a textile softening quaternary am = 20 monium compound b) 2-40 wt% acidic compounds c) 1-15 wt% hydrogen peroxide or organic percarb = oxylic acids d (E) 0.5 - 7% by weight of an antibacterial active substance residual water, and any dispersant, if any, in small quantities. 4. An agent according to claims 1 to 3, characterized in that the textile softening quaternary ammonium compound is in particular dimethylditalgalkylammonium chloride or dimethyl = distearylammonium thyme chloride. 5. An agent according to claims 1 to 4, characterized in that the antibacterial active substance is a quaternary ammonium compound, preferably cocosalkyldimethylbenzylammonium chloride. DK 156305 B An agent according to claims 1 to 5, characterized in that it contains a small amount of non-ionic surfactant soin dispersant. An agent according to claims 1 to 6, characterized in that it contains: a) 2-7 wt% dimethyldistearylammonium chloride b) 2-40 wt% orthophosphoric acid c) 1-15 wt% hydrogen peroxide d) 0.2 - 3 wt% e) 0.5 - 7% by weight of coconutalkyldimethylbenzylammonium chloride residual water, as well as a small amount of non-ionic surfactant as a dispersant. 15 Method of simultaneous bleaching, neutralization of alkaline detergent residues, removal of active chlorine and, optionally, to make freshly washed laundry dough antimicrobially in ordinary washing liquid, characterized by treating the 20 wash dough in the last rinsing bath with one for the rinsing bath in quantities of 0. , 5 to 20 g. 1 i ter added agent according to claims 1 to 7 for 0.5 to 5 minutes with continuous movement at approx. 10 to approx. 30 ° C and then separating the after-treatment liquid from the wash dough by pressing or centrifuging until a residual 2® moisture of approx. 10 to approx. 100% by weight, based on the weight of the laundry. 30 35