ES2565478T3 - Washing with polymeric bodies - Google Patents

Abstract

Procedure for cleaning and / or conditioning textile flat structures, in which the wet textile flat structures are brought into contact, which are to be cleaned and / or to be conditioned with a formulation containing a) at least one polymeric body containing a polymer selected from the group of polyalkylenes, polyamides and mixtures thereof and whose maximum spatial extent is in the range of 1 to 10 mm, b) a washing agent composition and c) hydrogen peroxide (H2O2 ).

Description

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DESCRIPTION

Washing with polymeric bodies

The invention relates to a process for cleaning and / or conditioning textile flat structures, in which the wet textile flat structures are brought into contact, which are to be cleaned and / or to be conditioned with a formulation containing the minus a polymeric body and a washing agent composition. The invention also relates to a kit comprising ingredients of the formulation.

The cleaning and / or conditioning of textile flat structures with little water or even without water or without large amounts of organic solvents is not only interesting for institutional washing, but is increasingly important due to the valuable water resource.

From WO 2007/128962 A1 a washing process is known which comprises the treatment of dirty laundry by contacting the laundry with a formulation comprising a plurality of polymer particles.

However, there is also a need to provide measures that further improve stain removal in such a procedure.

This objective is solved by a procedure for cleaning and / or conditioning textile flat structures, in which the wet textile flat structures are brought into contact, which are to be cleaned and / or which are to be conditioned with a formulation containing

a) at least one polymeric body, as defined in claim 1,

b) a washing agent composition and

c) hydrogen peroxide (H2O2).

It has been surprisingly shown that through the use of H2O2 in the process an improvement in stain removal is achieved not only in the case of spots that can be bleached, but also in a plurality of other types of spots.

In addition, it has been shown that the polymeric body after finishing the washing and / or conditioning process is had or soiled on its surface in a low intensity manner. Due to the clearly cleaner appearance of the polymeric body, the user clearly has little scruple to use the polymeric body several times.

The polymer body contains a polymer selected from the group of polyalkylenes, polyamides and mixtures thereof.

These polymers are suitable for use in a washing process with a low water content of this type and are also especially compatible with H2O2.

In a particularly preferred embodiment of the invention, the polymer body contains a polyamide that is selected from the group comprising PA 6 (g-caprolactam polymer), PA 11 (11-aminoundecanoic acid polymer), PA 12 (g polymer -laurinlactam), PA 66 (polymer of hexamethylenediamine and adipic acid), PA 69 (polymer of hexamethylene diamine and azelaic acid), PA 612 (polymer of hexamethylene diamine and dodecandioic acid), PA 46 (polymer of tetramethylenediamine and PA 6 (hexane-1,6-diamine polymer and sebacic acid), PA 612 (hexane-1,6-diamine polymer and dodecandioic acid), PA 66/610 (hexamethylenediamine copolymer, adipic acid and sebacic acid), PA 6I (polymer of hexamethylenediamine and isophthalic acid), PA 6/12 (copolymer of g-caprolactam and g-laurinlactam), PA 6/66 (copolymer of g-caprolactam, hexamethylenediamine and adipic acid) and mixtures thereof.

Polyamides are preferably used in the polymer body, since these are effective in a plurality of different spots.

In another embodiment of the invention, the polymer body contains a polyalkylene which is selected from the group of polyethylenes, polypropylenes and mixtures thereof.

Polymeric bodies consisting of polyalkylenes are especially suitable for the removal of oil-based stains.

In the process according to the invention a rinse cycle is not necessary. That is, in the inverse conclusion that many ingredients of the washing agent remain in the flat textile structures. To avoid sensitization and allergic reactions caused by enzymes it may be advantageous that the washing agent composition is free of enzymes.

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It is preferred that the polymeric body be in the form of a tablet, a sphere, a die, an egg, a cylinder, a disk, a cuboid or a truncated cone. The maximum spatial extent of the polymer body is in the range of 1 to 10 mm. A polymeric body of this size and shape exhibits a good flow or movement behavior and close contact with the textile flat fabrics to be treated.

The hydrogen peroxide can be used separately in the process, introduced into the washing agent composition, applied to the polymer body and / or absorbed by the polymer body in the process.

Also the washing agent composition can be used separately in the process, applied on the polymeric body and / or absorbed by the polymeric body.

For economic reasons it is advantageous that H2O2 can be used in the process, which in comparison with other bleaching agents such as percarbonates or perborates, is an economical bleaching agent. In addition, hydrogen peroxide in aqueous solution is used, so that the bleaching agent must not be dissolved first during the washing process. It is also distributed because of it more evenly in the formulation.

The invention also relates to a kit for cleaning and / or conditioning textile flat structures comprising

a) at least one polymeric body, as defined in claim 8,

b) a washing agent composition and

c) hydrogen peroxide (H2O2).

Next, the invention will be described in more detail among other things by means of examples.

The process according to the invention can be applied in a large plurality of flat textile structures. It can be used for example in all natural and synthetic tissue fibers, although it is especially advantageous in PA 66, polyester and cotton fabrics.

It is advantageous that the tissues to be treated are moistened with water to particularly improve the transport of the particles of dirt into the polymeric body. If the H2O2 and / or the washing agent composition are applied on the polymeric body and / or if they are absorbed by the polymeric body, the transport of the H2O2 and / or the ingredients of the textile flat structures is also improved by wetting the composition of washing agent from the polymeric body to the flat textile structures. The wetting of the textile flat fabrics can be carried out, for example, by wetting with water or an aqueous solution of the washing agent composition.

The amount of water used advantageously also depends on the water absorption capacity of the textile flat structures. However, it is generally preferred that the weight ratio of textile flat structures with respect to water amounts to 1: 0.1 to 1: 5 and more preferably 1: 0.2 to 1: 2.

In the process at least one polymer body is used. However, for reasons of efficiency of the process, it is preferred when a plurality of polymeric bodies are used in the process. The weight ratio of polymeric bodies with respect to flat textile structures is preferably from 30: 1 to 1: 1, more preferably from 15: 1 to 2: 1 and in particular preferably from 8: 1 to 3: 1 .

The polymeric body may contain a polymer selected from the group of polyalkylenes, polyesters, polyurethanes, polyamides and mixtures thereof, with polyamides and polyalkylenes being preferred. Preferred polyalkylenes comprise polyethylenes, polypropylenes or mixtures thereof.

In particular, however, it is preferred that the polymer body contains a polyamide. The polyamide may be selected from the group comprising PA 6 (g-caprolactam polymer), PA 11 (11-aminoundecanoic acid polymer), PA 12 (g-laurinlactam polymer), PA 66 (hexamethylenediamine polymer and adipic acid), PA 69 (hexamethylenediamine and azelaic acid polymer), PA 612 (hexamethylene diamine and dodecandioic acid polymer), PA 46 (tetramethylenediamine and adipic acid polymer), PA 610 (hexane-1,6-diamine and sebacic acid polymer), PA 612 (hexane-1,6-diamine polymer and dodecandioic acid), PA 66/610 (hexamethylenediamine copolymer, adipic acid and sebacic acid), PA 61 (hexamethylene diamine and isophthalic acid polymer), PA 6/12 (copolymer of g-caprolactam and g-laurinlactam), PA 6/66 (copolymer of g-caprolactam, hexamethylenediamine and adipic acid) and mixtures thereof.

The polymeric body can have any discretionary shape, however it is preferably in the form of a tablet, a sphere, a die, an egg, a cylinder, a disk, a cuboid or a truncated cone. These forms guarantee a good mobility of the polymer body and a close contact with the flat textile structures.

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The maximum spatial extent of the polymer body is preferably in the range of 1 to 10 mm and more preferably in the range of 2 to 6 mm. The term "maximum spatial extension" designates in this context the distance between the two points separated from each other in the broadest way in the polymer body.

In addition to the molded body, the formulation contains a washing agent composition. The washing agent composition contains surfactant (s), anionic, non-ionic, zwitterionic and / or amphoteric surfactants being used. Mixtures of anionic and non-ionic surfactants are preferred from the point of view of the technical application. The total surfactant content of a liquid washing agent is preferably below 40% by weight and especially preferably below 35% by weight, with respect to the entire composition of washing agent, preferably liquid.

Suitable non-ionic surfactants comprise alkoxylated fatty alcohols, alkoxylated alkyl esters of fatty acids, fatty acid amides, alkoxylated fatty acid amides, polyhydroxy fatty acid amides, alkylphenol polyglycol ether, amine oxides, alkyl polyglucosides and mixtures thereof.

As non-ionic surfactants, preferably alkoxylated, advantageously ethoxylated alcohols are used, in particular primary alcohols with preferably 8 to 18 C atoms and on average 1 to 12 mol of ethylene oxide (OE) per mole of alcohol, in which the Alcohol moiety may be linear or preferably branched with methyl in position 2 or may contain linear and branched moieties with methyl in the mixture, as they are usually found in oxoalcohol moieties. In particular, however, alcohol ethoxylates with linear residues of naturally occurring alcohols with 12 to 18 atoms of C are preferred, for example coconut alcohol, palm alcohol, tallow alcohol or oleic alcohol, and on average 2 to 8 OE per mole of alcohol. Preferred ethoxylated alcohols include, for example, C12-14 alcohols with 3 OE, 4 OE or 7 OE, Cg-11 alcohol with 7 OE, C13-15 alcohols with 3 OE, 5 OE, 7 OE or 8 OE, C12- alcohols 18 with 3 OE, 5 OE or 7 OE and mixtures thereof, such as mixtures of C12-14 alcohol with 3 OE and C12-18 alcohol with 7 OE. The degrees of ethoxylation indicated represent statistical mean values that for a special product can be an integer or a fractional number. Preferred alcohol ethoxylates have a narrow homolog distribution (narrow range ethoxylates, NRE). In addition to these non-ionic surfactants, fatty alcohols with more than 12 OE can also be used. Examples are tallow alcohol with 14 OE, 25 OE, 30 OE or 40 OE. They can also be used in accordance with the invention nonionic surfactants containing the OE and OP groups together in the molecule. Also suitable is a mixture of an ethoxylated (more strongly) branched fatty alcohol and an unbranched ethoxylated fatty alcohol, such as for example a mixture of a C16-18 alcohol with 7 OE and 2-propylheptanol with 7 OE. In particular, preferably the washing agent, cleaning agent, post-treatment agent or washing aid contains a C12-18 fatty alcohol with 7 OE or a C13-15 oxoalcohol with 7 OE as a non-ionic surfactant.

The content of non-ionic surfactants in the washing agent composition preferably ranges from 3% to 40% by weight, preferably from 5% to 30% by weight and in particular from 7% to 20% by weight, respectively with respect to The entire composition of washing agent.

In addition to the non-ionic surfactants, the anionic surfactant composition may also contain the washing agent composition. Sulfonates, sulfates, soaps, alkyl phosphates, anionic silicone surfactants and mixtures thereof are preferably used as an anionic surfactant.

As sulphonate type surfactants, alkyl (Cg-13) benzenesulfonates and olefin sulphonates are preferably considered in this regard. Also suitable are alkanes (C12-18) sulfonates and esters of a-sulfograses acids (stersulfonates), for example the a-sulphonated methyl esters of coconut fatty acids, palm kernel or hydrogenated tallow.

As alk (en) yl sulfates, alkaline salts and in particular sodium salts of sulfuric acid half-esters of C12-C18 fatty alcohols are preferred, for example coconut fatty alcohol, tallow fatty alcohol, lauryl alcohol, myristyl, cetyl or stearyl or of the C10-C20 oxoalcohols and those semi-esters of secondary alcohols of these chain lengths. Due to technical washing interests, C12-C16 alkyl sulfates and C12-C15 alkyl sulfates are preferred as well as C14-C15 alkyl sulfates. Also suitable are anionic surfactants are 2,3-alkyl sulfates.

Also suitable are sulfuric acid monosters of C7-21 straight chain or branched ethoxylated alcohols with 1 to 6 mol of ethylene oxide, such as Cg.11 alcohols branched with 2-methyl with an average of 3.5 mol of oxide of ethylene (OE) or C12-18 fatty alcohols with 1 to 4 OE.

Also preferred anionic surfactants are soaps. Saturated and unsaturated fatty acid soaps are suitable, such as salts of lauric acid, myristic acid, palphic acid, stearic acid, erucic acid (hydrogenated) and behenic acid as well as mixtures of soaps derived from natural fatty acids, for example fatty acids from coconut, palm kernel, olive oil or tallow.

Anionic surfactants including soaps can be found in the form of their sodium, potassium or magnesium or ammonium salts. Preferably, the anionic surfactants are in the form of their salts of

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sodium. Other preferred counterions for anionic surfactants are also the protonated forms of choline, triethylamine or methylethylamine.

The content of anionic surfactants of a washing and cleaning agent may range from 1% to 40% by weight, preferably from 5% to 30% by weight and very particularly preferably from 10% to 25% by weight, respectively. with respect to the entire washing or cleaning agent.

In addition to the surfactants, the washing agent composition may contain other ingredients that further improve the technical and / or aesthetic application properties of the washing agent composition. In the context of the present invention, the preferred washing agent compositions additionally contain one or more substances from the group of support substances, bleaching agents, bleaching activators, bleaching catalysts, enzymes, electrolytes, non-aqueous solvents, adjusting agents pH, perfumes, perfume bonds, fluorescent agents, colorants, hydrotope agents, foam inhibitors, silicone oils, anti-redeposition polymers, optical bleaching agents, grating inhibitors, agents that prevent shrinkage, anti-wrinkle agents, inhibitors of color transfer, antimicrobial active ingredients, germicides, fungicides, antioxidants, preservatives, corrosion inhibitors, thickeners, antistatic agents, bitter agents, agents that facilitate ironing, foaming and impregnating agents as well as UV absorbers.

If the process according to the invention is not followed by any rinse cycle, then it is preferred that the composition of the washing agent does not contain ingredients that may cause sensitization or allergies upon contact with the skin. Therefore, it may be preferred, for example, that the washing agent composition is free of enzymes.

The washing agent composition itself can be solid, liquid, gel-shaped, waxy or paste-like, with liquid washing agents being particularly preferred due to the best dissolving properties.

The washing agent composition can be used separately in the process and / or applied to the polymeric body and / or absorbed by the polymeric body. It may be preferred that the polymer body is coated with the washing agent composition. If the washing agent composition is applied to the polymeric body and / or absorbed by the polymeric body in the process, this facilitates the user to carry out the procedure, since it is not yet to dose the agent composition separately washing

In addition to the polymer body and the washing agent composition, the formulation contains hydrogen peroxide. Hydrogen peroxide is an economic bleaching agent and leaves no residue in the textile flat structures treated with this.

The hydrogen peroxide can be used separately in the process and / or incorporated in the composition of the washing agent and / or applied on the polymeric body and / or absorbed by the polymeric body. If hydrogen peroxide is already incorporated in the washing agent composition or if it is used in the procedure applied to the polymer body and / or absorbed by the polymer body, this prevents the user from coming into direct contact with the hydrogen peroxide. .

The amount of H2O2 is preferably 0.5 to 10 g and more preferably 0.5 to 3 g per wash load, the wash load weighing up to 5 kg.

The procedure can be carried out in washing machines specifically designed for this. In this respect, the polymeric bodies used can be introduced either separately by the user of the procedure in the washing drum or, in an alternative embodiment, they can be stored in a reserve chamber inside the washing machine and then can be dosed in a manner automates the wash cycle in the wash drum. The polymeric bodies can either be separated after the washing process is finished together with the cleaned textile flat structures or they can be redirected to the reserve chamber for other uses.

In case of multiple use of a polymeric body it may be preferred that these be subjected to a soda stage. This can be done, for example, by rinsing the polymer body with a cleaning solution to remove adherent pigment particles and / or by bleaching the dirt particles adhered to the outer layers of the polymer bodies. This soda stage can be carried out for example automatically in a washing machine designed for it or separately.

In an alternative embodiment, the procedure can be carried out in a commercially used dryer. For this, wet textile materials are provided, which are to be cleaned together with the polymeric body or polymeric bodies, the composition of the washing agent and the hydrogen peroxide in an air, water and water vapor tight bag and this Bag is then placed closed in a dryer. After finishing the drying program, the bag is taken out and the cleaned textile flat structures are removed and dried.

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The process is preferably carried out according to the invention at a temperature below 100 ° C. In particular, the process is preferably carried out at temperatures between 30 ° C and 90 ° C.

The duration of the procedure is preferably between 15 and 240 minutes and more preferably between 20 and 90 minutes.

Examples of realization

Embodiment example E

In an autoclave bag, 550 g of PA 66 polyamide tablets (Zytel® 101 from DuPont) with a length of approximately 4 mm, a width of 3 mm and a weight of 30 to 40 mg per tablet are added. In parallel, 150 g of white barley knitted towels were moistened, on which conventional cotton test fabrics with test stains were fixed, with an aqueous solution consisting of 290.7 g of water, 1 g of H2O2 (active substance ) and 11.81 g of washing agent A. The bag was then closed and transferred to a dryer drum (Miele Novotronic T 7644 C). Additionally, 2000 g of terry cloth towels were added to the drum, which were moistened with 2000 g of water. After the “cotton extra dry” program (duration: 90 minutes), the barley-dotted towels provided with the stained conventional test tissues were removed from the autoclave bag, dried by laying them and then the degree of stain removal was determined .

Comparison Example V

Analogously to the example of embodiment 1, with the difference that the terrycloth towels were moistened with an aqueous solution consisting of 290.7 g of water and 11.81 g of washing agent A.

The washing agent A contains 21.1% by weight of surfactants (non-ionic and anionic surfactants), as well as other usual constituent parts of liquid washing agents such as the sodium salt of citric acid, sodium metaborate, defoaming agents , acrylate thickeners, water miscible solvents, optical brighteners, dyes, perfume and water. Washing agent A was free of enzymes.

The determination of the ability to remove stains was carried out through the determination of the normalized color value Y (DIN 5033). For this, the Y values of conventional untreated stained fabrics and Y values of stained textile materials, treated in one of two procedures E or V were determined (see table 2). The determination was made at 420 nm (apparatus: Datacolor Spectraflash 600, 30 mm diaphragm). In the case of natural fouling, the evaluation of stain removal was carried out by means of the value dY (Y value of the untreated stain minus Y value of the treated stain).

Table 2: referral: Y value

 Stain type

 Stain after treatment with E Stain after treatment with V

 Synthetic fouling: mineral oil / hollm

 48.1 39.8

 olive oil / hollm

 49.6 40.0

 tea

 70.9 52.6

 mayonnaise / hollm

 45.2 35.2

 black currants

 71.9 62.5

 Natural fouling: sheep blood

 37.0 7.3

 cranberry juice

 56.5 19.0

 grass

 22.8 7.8

 salad sauce

 33.8 14.7

 cherry juice

 17.5 0.9

 Red wine

 30.8 10.5

 cocoa

 18.8 2.0

The results clearly show that by adding H2O2 there is not only a clearly improved stain removal in case of spots that can be bleached, but also in the case of a plurality of other spots. In addition, the polyamide tablets that were used in the process according to the invention were clearly held / soiled less intensely than the polyamide tablets used in the V procedure.

In addition, it was shown that the transfer of dirt to the white tissue, not soiled in procedure E according to the invention was clearly less intense than in procedure V.

Claims (8)

5 10 fifteen twenty 25 30 35 40 Four. Five 1. Procedure for cleaning and / or conditioning textile flat structures, in which the wet textile flat structures are brought into contact, which are to be cleaned and / or to be conditioned with a formulation containing a) at least one polymer body containing a polymer selected from the group of polyalkylenes, polyamides and mixtures thereof and whose maximum spatial extent is in the range of 1 to 10 mm, b) a washing agent composition and c) hydrogen peroxide (H2O2). 2. Method according to claim 1, characterized in that the polymeric body contains a polyamide which is selected from the group comprising PA 6 (g-caprolactam polymer), PA 11 (11-aminoundecanoic acid polymer), PA 12 (polymer g-laurinlactam), PA 66 (hexamethylenediamine and adipic acid), PA 69 (hexamethylenediamine and azelaic acid polymer), PA 612 (hexamethylenediamine and dodecandioic acid polymer), PA 46 (tetramethylenediamine and acidic acid polymer) , PA 610 (hexane-1,6-diamine and sebacic acid polymer), PA 612 (hexane-1,6-diamine and dodecandioic acid), PA 66/610 (hexamethylenediamine copolymer, adipic acid and sebacic acid) , PA 6I (hexamethylene diamine and isophthalic acid), PA 6/12 (co-polymer of g-caprolactam and g-laurinlactam), PA 6/66 (copolymer of g-caprolactam, hexamethylene diamine and adipic acid) and mixtures thereof. 3. Method according to claim 1 or claim 2, characterized in that the polymer body contains a polyalkylene which is selected from the group of polyethylenes, polypropylenes and mixtures thereof. 4. Method according to one of claims 1 to 3, characterized in that the washing agent composition is free of enzymes. 5. Method according to one of claims 1 to 4, characterized in that the polymeric body is in the form of a tablet, a sphere, a die, an egg, a cylinder, a disk, a cuboid or of a truncated cone. Method according to one of claims 1 to 5, characterized in that the hydrogen peroxide is used separately in the process, introduced into the washing agent composition, applied on the polymeric body and / or absorbed by the polymeric body. . 7. Method according to one of claims 1 to 6, characterized in that the washing agent composition can be used separately in the process, applied on the polymeric body and / or absorbed by the polymeric body. 8. Kit for cleaning and / or conditioning textile flat structures comprising a) at least one polymer body containing a polymer selected from the group of polyalkylenes, of polyamides and mixtures thereof and whose maximum spatial extent is in the range of 1 to 10 mm, b) a washing agent composition and c) hydrogen peroxide (H2O2).