WO2016034562A1

WO2016034562A1 - Washing additive

Info

Publication number: WO2016034562A1
Application number: PCT/EP2015/069904
Authority: WO
Inventors: François BOUGARD; Pierre Stachura; Armelle LOGHMANIAN; Hélène LONCIN
Original assignee: Sopura S.A.
Priority date: 2014-09-01
Filing date: 2015-09-01
Publication date: 2016-03-10
Also published as: SI3189127T1; EP3189127A1; PT3189127T; BE1021365B1; RU2666891C1; ZA201701295B; MX2017002666A; EP3189127B1; RS58460B1; MX374709B; ES2709389T3; HRP20190207T1

Abstract

The present invention relates to a washing additive including lysine tetramethylene phosphonate (LTMP) and gluconic acid. The present invention also relates to a detergent composition including said additive and to the use thereof in the agrifood industry, preferably in the beverage industry, and more preferably in the brewing industry.

Description

ADDITIVE WASH

Object of the invention

The present invention relates to a washing additive suitable for cleaning reusable glass bottles. The present invention also relates to a method for cleaning reusable glass bottles using said additive, as well as to a detergent composition comprising said additive. This invention relates in particular to the food industry, preferably the beverage industry, and more particularly to the brewing industry for cleaning glass bottles.

State of the art

The use of glass bottles for the packaging of liquids dates back to antiquity. Although plastic bottles have since made their appearance and compete to a large extent with glass bottles, they are still used today, especially for the packaging of common food liquids, such as water, milk, water wine, fruit juices, sodas, and beers, since glass offers the advantage over plastic of being more inert. In addition, some glass bottles have the added advantage of being reusable.

[0003] The glass bottles marketed are generally labeled in such a way as to inform the consumer of their contents. These labels are generally disposed at least on the body of the bottle, preferably on the front, where they are fixed using an adhesive.

When reusable, these bottles once used are collected and transported to factories where they are subject, in special equipment called "washers" to one or more automated cycles of cleaning / soaking / rinsing. In particular, the bottles are returned for greater cleaning efficiency. The final quality control is done by mirage (visual control in transparency). Traditionally, the bottles are cleaned in an alkaline medium, using a caustic soda solution, and at temperatures of the order of 80 ° C. In order to facilitate cleaning and promote detachment of the bottle label while preventing foaming in the equipment, it is generally expected to add one or more additives to the solution to form an effective detergent composition.

Among these additives, it has for example been proposed to use sequestering agents such as EDTA and / or dispersing agents such as phosphonates and polyacrylates. The use of polyol derivatives, especially modified polysaccharide polymers, alkoxylated derivatives of alcohols, esters, amines or amides has also been proposed.

The choice of the additive to prepare the effective detergent composition poses a number of technical difficulties for those skilled in the art. Indeed, to ensure maximum efficiency, an effective detergent composition must meet a number of technical criteria, often difficult to reconcile.

Thus, an effective detergent composition should allow detergency not only inside but also outside satisfactory containers, especially bottles. In other words, a detergent composition must allow the elimination of liquid residues (beer, wine, fruit juice, milk, soda, etc.) on the external and internal surfaces of the containers or bottles. also the removal of deposits of biological elements or from said biological elements such as bacteria or molds, that is to say, fungi and yeasts, as well as residues and traces organic and / or inorganic elements thereof In addition, to be effective, a detergent composition must also allow the level of the outer surface of the containers, in particular bottles, detachment of the label and other marking elements fixed on the surface of the containers, as well as the elimination of glues and / or adhesives, while avoiding the pollution of washing baths, especially due to the dissolution of the label, and in particular ink codes in these baths.

An effective detergent composition must also be rinsed easily, that is to say, it must avoid leaving traces, especially caustic soda, on the surface of the containers including glass containers such as bottles .

Simultaneously, an effective detergent composition must ensure a certain protection of the integrity of the inner and outer surface of the containers, in particular glass bottles, avoiding any degradation of the glass phenomenon known to those skilled in the art under the name of "scuffing" or "corrosion", including any degradation of the elements etched on the surface of containers especially a bottle, such as marks obtained by pyrography. However, in practice, when using an additive to increase the detergency, it is unfortunately also often observed an increase in corrosion (scuffing).

In addition, the foam height formed during cleaning cycles must be controlled.

Finally, an effective detergent composition must prevent the formation of mineral deposits, including calcium carbonate deposits, generally called "tartar".

[0013] Detergent compositions are currently available on the market. While these detergent compositions separately meet some of the above-mentioned technical criteria, none of them fill them all at the same time. Therefore, the present invention aims to provide such a composition that meets the aforementioned needs, which may possibly include elements derived from renewable biological materials and that can reduce its environmental impact, particularly by a lower use of caustic soda in obtaining an effective detergent composition.

[0014] WO 2013/053390 A1 discloses a detergent composition comprising a surfactant and lysine tetramethylene phosphonate. It does not describe a composition comprising a gluconic acid.

[0015] WO 2012/028203 A1 discloses a detergent composition comprising phosphonocarboxylic acid, gluconic acid and mixtures thereof. It does not describe a composition comprising lysine tetramethylene phosphonate.

[0016] DE 13 02 882 B discloses a bottle washing process comprising a bath comprising a chelant such as gluconic acid and / or aminoalkyldiphosphonic acid. It does not describe a composition comprising lysine tetramethylene phosphonate.

[0017] DE 43 38 626 A1 describes a washing additive for the bath addition for cleaning glass bottles comprising an acid such as gluconic acid and a diphosphonic acid. It does not describe a composition comprising lysine tetramethylene phosphonate. Summary of the invention

The present invention relates to a washing additive comprising (or consisting of) a lysine tetramethylene phosphonate (abbreviation: LTMP) and a carboxylic acid consisting of / corresponding to gluconic acid.

The present invention also relates to a washing additive consisting of lysine tetramethylene phosphonate (abbreviation: LTMP) and a carboxylic acid corresponding to gluconic acid.

Preferably, in the washing additive according to the invention, lysine tetramethylene phosphonate and gluconic acid are present in a weight ratio lysine tetramethylene phosphonate: gluconic acid between (about) 1: 1 and (about ) 5: 1.

Preferably the ratio by weight of lysine tetramethylene phosphonate and gluconic acid is between (about) 1, 5: 1 and (about) 3: 1

Preferably, according to the present invention, the lysine tetramethylene phosphonate is present (in the additive) at a concentration of between (approximately) 2% and (approximately) 50% by weight, preferably between (approximately) 2% and (about) 30% by weight, preferably between (about) 2% and (about) 10% by weight.

Advantageously, the additive according to the invention further comprises a dispersing agent, preferably a natural dispersing agent (that is to say a dispersing agent obtained from renewable biological materials).

[0024] Preferably, said dispersing agent is a polycarboxylic dispersing agent.

Preferably, the dispersing agent is chosen from the group consisting of carboxymethyl cellulose, carboxymethyl inulin, inulin, polyaspartic acid, polyepoxy succinic acid, and mixtures thereof.

Advantageously, the dispersing agent is present in the additive according to the invention in a ratio by weight lysine tetramethylene phosphonate: dispersant agent between (about) 10: 1 and (about) 3: 1.

Preferably, the dispersing agent is present in the additive at a concentration of between (approximately) 0.5 and (approximately) 10% by weight.

In a particularly advantageous manner, the dispersing agent is carboxymethyl inulin.

Preferably, the washing additive according to the present invention further comprises a surfactant with low foaming power, but capable of facilitating the penetration and solubilization of the washing additive of the invention. Preferably, said surfactant is chosen from the group consisting of ethyl propylene oxide copolymers, ethoxylated fatty acids and mixtures thereof.

Preferably, said surfactant is present in a lysine tetramethylene phosphonate: surfactant ratio between (about) 5: 1 and (about) 1: 2.

[0032] Preferably, said surfactant is present in the additive at a concentration of between (approximately) 0.5% and (approximately) 20% by weight.

According to a preferred form of the invention, the washing additive consists of lysine tetramethylene phosphonate, gluconic acid and a low foaming surfactant, wherein the weight ratio tetramethylene phosphonate: gluconic acid is included between (about) 1, 5: 1 and (about) 3: 1, and the low foaming surfactant concentration is between about (0.5%) and (about) 20%.

The present invention also relates to a detergent composition comprising the washing additive of the invention and caustic soda (or other suitable solvent), said caustic soda (or other suitable solvent) being present at a concentration of between (about) 0.5% and (about) 3%, preferably between (about) 0.5% and (about) 1.5%.

Preferably, said detergent composition is such that the washing additive is present at a concentration of between (approximately) 0.05% and (approximately) 0.5%, and preferably between (approximately) 0.1% and (approximately) 0.2 %.

Another object of the invention relates to an industrial process for cleaning mold-contaminated containers, preferably glass containers, and even more preferably glass bottles, comprising the step of washing said containers with a washing additive or a detergent composition of the invention.

Preferably, in said industrial process of the invention, the washing is carried out by immersion in a bath containing the detergent composition of the invention at a temperature of between (approximately) 60 ° C and (approximately) 80 ° C preferably between (about) 60 ° C and (about) 70 ° C, and / or by spraying said detergent composition.

The present invention also relates to the use of the washing additive and / or the detergent composition, and / or the method of the invention in the food industry, preferably in the industry. drinks, and even more so in the brewing industry. Another object of the invention relates to the use of lysine tetramethylene phosphonate and at least gluconic acid, preferably applied simultaneously in a washing additive, to remove mold from the surface of containers , preferably glass bottles.

The invention also relates to the use of lysine tetramethylene phosphonate and at least gluconic acid, preferably applied simultaneously, as washing solution without "scuffing", without corrosion of the surface of containers, preferably glass bottles.

Definitions: [0041] In the present description, the terms used and not defined below are those having the same meaning and usually understood by those skilled in the art.

Lysine tetramethylene phosphonate or LTMP is a molecule corresponding to the chemical formula 1 as shown in Figure 1 and belongs to the family of phosphonic acids, whose salts are called phosphonates, generally known to be chelating agents, still called "sequestering agents" or "sequestering agents", that is to say that they are molecules, and more specifically surfactants (see below) capable of acting as ligands by forming chemical complexes with metal ions such as copper, iron, nickel, and thus limit their availability.

Lysine tetramethylene phosphonate is derived from lysine, a natural amino acid whose chemical formula is also repeated in Figure 1 (chemical formula 2).

In the present description, the word "surfactant" or surfactant refers to a natural or synthetic molecule capable of modifying the surface tension between two surfaces. From a chemical point of view, a surfactant is an amphiphilic molecule having a hydrophobic and apolar part and a hydrophilic and polar part. This dual property gives it a particular affinity for the oil / water or water / oil interfaces and is the basis for the stabilization of the dispersed systems. The surfactants may be ionic or nonionic. When ionic, depending on the nature of the charge on the hydrophilic part, the surfactants can be anionic, cationic, or zwitterionic or amphoteric when the hydrophilic part has a positive charge and a negative charge which, from an electrical point of view , compensate each other.

In the present description, the term "surfactant" is a term equivalent to the term "surfactant".

In the present description, the terms "detergent", "foaming agent", "little or no foaming agent", "low foaming agents", "dispersing agent" all refer to surfactants; these terms are descriptive terms of the function provided by the surfactant in the composition.

Thus, a "detergent" more specifically denotes a surfactant capable of removing organic and / or inorganic soil, including deposits of bacteria or from bacteria or other microorganisms (molds, fungi, yeasts, etc.). even animals (such as molluscs)) on a surface of a solid by solubilizing said soils.

A "foaming agent" is a surfactant capable of adsorbing at the gas / liquid interface, in particular at the water / air interface and leading to the formation of foam by dispersing a large volume of gas. (especially air) in a small volume of liquid (especially water). According to its propensity to form foam, one will speak of agent with more or less great foaming power. It is known to those skilled in the art that the foaming power can be measured according to the so-called Ross-Miles method which makes it possible to evaluate an initial volume of foam and its stability over time. This method is based on a static measurement and is commonly used in industry. However, other measurement methods exist based in particular on dynamic principles.

Surfactants or nonionic surfactants including alkoxylated surfactants such as copolymers EO / PO, alcohol alkoxylates including EO / PO block copolymers such as Pluronic surfactants, dehypon LS-54 (R- (EO)) ₅ (PO) ₄ ), Dehypon LS-36 (R- (EO) ₃ (PO) ₆ ), Plurafac LF 221 (BASF), Tegoten EC1 1, LUTENOL (alcohol ethoxylates) or a mixture of 'between them. Low foaming surfactants preferably comprise low foaming nonionic polymers, used for the purpose of increasing detergency while limiting the generation of foam. By way of example, mention may be made of: Plurafac S 305 LF, Plurafac S 405 LF, Plurafac S 505 LF, Plurafac SLF 18B, Plurafac LF 303, Plurafac LF-305, Plurafac LF-4030 or Plurafac SLF-18B45 (BASF) or a mixture of them.

Non-foaming surfactants or also known as "defoamer" are characterized by lower aqueous solubilities related to a lower proportion of hydrophilic element and have the primary function of destabilizing the structure of the foam. The preferred surfactants are: Pluriol 1000, 2000 or 4000, as well as Pluronic L101; L61 or L81.

A "dispersing agent" or "dispersant" is a surfactant capable of fixing hydrophobic particles contained in a hydrophilic solution, avoiding their aggregation and promoting their dispersion in said solution. The terms percent (%) by weight refer to the concentration of an ingredient of a described composition, the weight of this ingredient divided by the total weight of the composition and multiplied by 100. The terms "about "Refer to variations in numerical quantities that may exist in the applications of the claimed products and may vary according to the purity or source of the products, as well as the method of application of the claimed products. Preferably, these variations are of the order of 10% or 5%. The present invention will be described in detail in the following examples with reference to the appended figures and presented as non-limiting illustrations of the various aspects of the present invention. "Scuffing" or "corrosion" is defined as any degradation of the glass at containers, in particular bottles, including any degradation of the elements etched on the surface of said containers, such as marks or drawings obtained by pyrography. Brief description of figures and tables

Figure 1 shows the chemical formula of lysine tetra (methylene) phosphonate as used in the present invention (chemical formula 1), as well as that of lysine (chemical formula 2) which it derives.

Figure 2 shows the results of soil cleaning tests present on glass plates which have been washed with different compositions, including a detergent composition according to the invention.

Figure 3 shows the results of "scuffing" tests performed on glass bottles treated with different detergent compositions, including detergent compositions according to the invention.

FIG. 4 presents the results of three series of measurement tests.

(Tests Nos ^. 1 to 3) the detergency performance of various detergent compositions, and especially detergent compositions according to the invention, as obtained on glass bottles treated with the aid of said compositions.

Detailed description of the invention

The washing additive according to the present invention offers the interest of meeting all the technical criteria mentioned above. It is particularly suitable for the automatic cleaning of reusable glass bottles, although other applications may also be considered. In addition, the additive according to the present invention has the advantage of using less caustic soda. However, caustic soda is known to increase the pH of streams (rivers, rivers), thus posing a potential threat to aquatic fauna and flora. Caustic soda can also infiltrate the earth, and thus harm agriculture and the environment of plants, minerals and animals directly or more distantly, or even contaminate the groundwater.

The composition according to the present invention has the additional advantage of being used in the cleaning phase over a lower temperature range compared to compositions available on the market. In other words, the washing additive according to the invention makes cleaning more energy efficient and less polluting.

[0063] Moreover, the additive according to the present invention comprises a compound, LTMP, which is advantageously obtained from biological materials. renewable, that is to say which derive from natural molecules, making it an additive a priori more ecological than many other additives proposed in the trade.

Example 1: Bottle detergency tests

Comparative tests were performed by immersion of previously soiled glass bottles using mold (fungi / yeasts). A label is stuck on the outside of bottles. The bottles are then immersed in baths comprising different detergent compositions containing different wash additives and 1% caustic soda at a temperature of 70 ° C. The effectiveness of the various wash additives is evaluated both in terms of visual cleaning-evaluation-and in terms of label peeling time.

The results obtained for a detergent composition according to the invention and for two additives A and B corresponding to two different commercial formulas are shown in Table 1 below:

Table 1

In Table 1, the tested products are as follows: Sample

1: stained glass bottles subjected to immersion at 70 ° C in a detergent composition comprising 1% NaOH and 0.2% of a first additive (which we will call additive A) available commercially.

Sample 2: Stained glass bottles subjected to immersion at 70 ° C in a detergent composition comprising 1% NaOH and 0.2% of a second additive (which we will call additive B) available commercially.

Sample 3: soiled glass bottles subjected to immersion at 70 ° C in a detergent composition according to the invention comprising 1% NaOH and 0.2% of an additive according to the invention. The composition of the additive for sample 3 is as follows:

38g city water

9g gluconic acid 60%

27g cumene sulfonate

10g low foaming surfactant (Fatty alcohol alkoxylates, Plurafac LF303 © BASF)

2g carboxymethylinulin

14g LTMP

Example 2: Plate detergency test

Comparative tests on standardized dirt plates consisting of starch applied to glass were made. For this, the dirt plates were immersed at 70 ° C or 80 ° C in a bath comprising a detergent composition for a determined time and with stirring. Said detergent composition comprised from 1 to 2% of caustic soda and either the washing additive according to the invention (sample 3) or a commercially available washing additive (samples 1 and 2). The reading of the plates thus treated is visual.

The results obtained are shown in Figure 2 and show the particularly advantageous performance in terms of detergency of the detergent composition according to the invention.

Example 3: "Scuffing" Test This test consists in immersing at 70 ° C. a clean and dry glass bottle, weighed beforehand, for seven hours in a detergent composition comprising 1% by weight of caustic soda and 0.2% by weight. a washing additive. After which the bottle is dried and weighed again. The difference in weight corresponds to the dissolution of glass in the solution commonly known as "chemical scuffing" or chemical corrosion. To better simulate actual bottle cleaning conditions, 50 ppm calcium phosphate was added to the solutions. The difference in weight is expressed in grams, a significant loss being synonymous with high scuffing.

Three samples, numbered from 1 to 3, were tested and the results are presented in FIG. 3.

Sample 1 corresponds to a sample subjected to the same detergent composition with the same commercial washing additive as sample 1 in Example 1. Sample 2 corresponds to a sample subjected to a detergent composition using a commercial washing additive known for its "anti-scuffing" properties.

Sample 3 corresponds to a sample subjected to the same detergent composition with the same washing additive according to the invention as sample 3 in Example 1.

It is clear from Figure 3 that the sample subjected to a detergent composition according to the invention comprising a washing additive according to the invention (sample 3) has levels of "scuffing" particularly low, comparable to those obtained with the washing additive known for its "anti-scuffing" properties.

Example 4: Other tests

The washing additives according to the invention, and therefore the detergent compositions according to the invention derived from it, have experimentally shown antifoam behavior sufficient for the targeted application. These additives according to the invention were not very aggressive with respect to the labels, limiting the losses of ink polluting the washing baths, but also limiting the degradation of the paper.

The detergency tests carried out in the laboratory were confirmed by tests in industrial bottle washers.

Example 5 Nature of Phosphonate and Carboxylic Acid

Three series of tests were carried out on various washing additives to compare the effect of the nature of the phosphonate and the nature of the carboxylic acid on its performance in terms of detergency and its power of corrosion (scuffing) and the results obtained are shown in Figure 4 and summarized in Table 2.

Example 5 Nature of Phosphonate and Carboxylic Acid

Three series of tests were carried out on various washing additives to compare the effect of the nature of the phosphonate and the nature of the carboxylic acid used in the detergent composition on its performance in terms of detergency. The results obtained are presented in FIG. 4 and summarized in table 2. Likewise, the effect of the nature of the phosphonate and that of the carboxylic acid on the scuffing powers of the detergent composition were tested and the results are also presented.

Principle of the different tests:

In a first series of tests, the series of tests No. 1 (% performance 1), the performance in terms of detergency of the washing composition (detergent composition) corresponds to the percentage of perfectly clean bottles after a laboratory wash. For this, dirty bottles were immersed for 10 minutes in a bath at 80 ° C comprising a detergent composition comprising 2% by weight of NaOH and 0.2% by weight of the washing additive tested. The bottles were then rinsed with tap water and filled with a solution of methylene blue. The bottles were rinsed again and analyzed optically.

In a second series of tests, the series of tests No. 2 (% performance 2), the performance in detergency corresponds to the percentage of perfectly clean plates after washing in the laboratory. For this, plates soiled with rice starch (provided by the test center on CF.T.bv materials) were immersed with stirring for 10 minutes in a bath at 80 ° C. comprising a detergent composition comprising 2% by weight of NaOH and 0.2% by weight of the washing additive tested. The plates were then rinsed with tap water and analyzed optically. The percentage of clean plates corresponds to the ratio between the surface of the plates perfectly clean and the total surface of the plates.

In the third series of tests, the number 3 test series (% performance 3), the detergency performance corresponds to the percentage of perfectly clean bottles after washing in industrial washers. For this, dirty bottles were immersed for 10 minutes in a bath at 80 ° C comprising a detergent composition comprising 2% by weight of NaOH and 0.2% by weight of the washing additive tested. The bottles were then rinsed with water and filled with a solution of methylene blue and analyzed optically.

In parallel, the various washing additives (additives from 1 to 1 1) have also been tested in the laboratory for their anti-scuffing property. For this, the weight loss of bottles previously immersed for 7 hours at 80 ° C. was evaluated in a bath comprising a detergent composition comprising 2% by weight of NaOH and 0.2% by weight of the washing additive tested. The result is expressed on a scale from 0 to 10, the value 0 corresponding to the result obtained with a standard anti-scuffing additive based on phosphonate, and the value corresponding to the result obtained with an EDTA additive which does not has no anti-scuffing properties. Description of the tested products

Details of the compositions of the various additives tested:

Additive 3: 40% 1-Hydroxyethylidene -1,1-diphosphonic acid (HEDP, Dequest 2010 ©: Italmach), 15% phosphoric acid (75% wt)

Additive 4: 40% acid 1 -Hydroxyethylidene -1,1-diphosphonic acid (HEDP, Dequest 2010 ©: Italmach), 15% gluconic acid (60% wt)

Additive 5: 12% LTMP lysine tetramethylene phosphonate (SPE 1001 ©: Italmach) 10% phosphoric acid (50% wt), 10% low foaming surfactant (Fatty alcohol alkoxylates, Plurafac LF303 © BASF), 2% dispersing agent (carboxymethyl inulin, CMI, Dequest PB ©: Italmach)

Additive 6: 12% LTMP lysine tetramethylene phosphonate (SPE 1001 ©: Italmach) 10% gluconic acid (60% wt), 10% low foaming surfactant (Fatty alcohol alkoxylates, Plurafac LF303 © BASF), 2% dispersing agent (carboxymethyl inulin, CMI, Dequest PB ©: Italmach) Additive 7: 12% 1 -Hydroxyethylidene -1,1-diphosphonic acid (HEDP, Dequest 2010 ©: Italmach), 10% phosphoric acid (75% wt), 10% low foaming surfactant (Fatty alcohol alkoxylates, Plurafac LF303 © BASF ), 2% dispersing agent (carboxymethyl inulin, CMI, Dequest PB ©: Italmach)

Additive 8: 12% 1 -Hydroxyethylidene -1,1-diphosphonic acid (HEDP, Dequest 2010 ©: Italmach), 10% gluconic acid (60% wt), 10% low foaming surfactant (Fatty alcohol alkoxylates, Plurafac LF303 © BASF ), 2% dispersing agent (carboxymethyl inulin, CMI, Dequest PB ©: Italmach)

Additive 9: mixture of phosphonates (known for their performance "antiscuffing"), dispersant and surfactant low foaming. It is a standard commercial additive for washing phosphonate-based bottles with low scuffing (corrosion) properties known as Mix100BNA ©: Sopura

Additive 10: phosphoric acid, phosphonic acid and low foaming surfactant (Fatty alcohol alkoxylates). It is a standard commercial additive for the washing of phosphoric acid bottles with high detergency, known as MIX100BPRD43 ©: Sopura

Additive 1 1: ethylene diamine tetraacetic acid (EDTA) and low foaming surfactant. It is a standard commercial additive for the washing of EDTA bottles with high detergency, known as MIX LEG ©: Sopura

Results of the different tests:

Table 2

The results presented above show that only the combination of LTMP as phosphonate and gluconic acid as carboxylic acid makes it possible to obtain a detergent composition having both a high detergency and good anti-corrosion properties. ("Anti-scuffing").

Claims

I. A wash additive comprising lysine tetramethylene phosphonate (LTMP) and gluconic acid.

2. The additive according to claim 1, characterized in that lysine tetramethylene phosphonate and gluconic acid are present in a weight ratio lysine tetramethylene phosphonate: gluconic acid of between 1: 1 and 5: 1, preferably between 1: , 5: 1 and 3: 1.

3. The additive according to claim 1 or 2, characterized in that the lysine tetramethylene phosphonate is present in the additive at a concentration of between 2% and 50% by weight, preferably between 2% and 30%, preferably between 2% and 10% by weight.

4. The additive according to one of the preceding claims, characterized in that it comprises a dispersing agent, preferably a natural dispersing agent.

5. The additive according to claim 4, characterized in that the dispersing agent is a polycarboxylic dispersing agent.

6. The additive according to claim 5, characterized in that the dispersing agent is chosen from the group consisting of carboxymethyl cellulose, carboxymethyl inulin, inulin, polyaspartic acid, polyepoxy succinic acid, and mixtures thereof.

7. The additive according to any one of claims 4 to 6, characterized in that the dispersing agent is present in a weight ratio of lysine tetramethylene phosphonate: dispersing agent of between 10: 1 and 3: 1.

8. The additive according to one of claims 4 to 6, characterized in that the dispersing agent is present in the additive at a concentration between 0.5 and

10% by weight.

9. The additive according to one of claims 4 to 8, characterized in that the dispersing agent is carboxymethyl-inulin.

10. The additive according to one of the preceding claims, characterized in that it comprises a surfactant with low foaming power.

I I. The additive according to claim 10, characterized in that the surfactant is selected from the group consisting of ethyl propylene oxide copolymers, ethoxylated fatty acids and mixtures and these.

12. The additive according to claim 10 or 1 1, characterized in that the surfactant is present in a lysine tetramethylene phosphonate: surfactant ratio of between 5: 1 and 1: 2.

13. The additive according to claim 12, characterized in that the surfactant is present in the additive at a concentration of between 0.5% and 20% by weight.

14. A washing additive consisting of lysine tetramethylene phosphonate, gluconic acid and a low foaming surfactant, wherein the weight ratio of tetramethylene phosphonate: gluconic acid is from 1.5: 1 to 3: 1, and the concentration of low foaming surfactant is between 0.5% and 20%.

15. A detergent composition comprising a washing additive according to any one of the preceding claims and caustic soda, the caustic soda being present at a concentration of between 0.5% and 3%, preferably between 0.5% and 1.5%. .

16. The detergent composition according to claim 15, characterized in that the washing additive is present at a concentration of between 0.05% and 0.5%, and preferably between 0.1% and 0.2%.

17. An industrial process for cleaning mold-contaminated containers, preferably glass containers, and even more preferably glass bottles, comprising the step of washing said containers with a washing additive according to one of the following: Claims 1 to 14 or a detergent composition according to Claim 15 or 16.

18. The industrial process according to claim 7, characterized in that the washing is carried out by immersion in a bath containing the detergent composition according to claim 15 or 16 at a temperature of between 60 ° C and 80 ° C, preferably between 60 ° C and 80 ° C. ° C and 70 ° C, and / or by spraying said detergent composition.

19. Use of the washing additive according to one of claims 1 to 15 and / or the detergent composition according to claim 15 or 16, and / or the method according to claim 17 or 18 in the food industry. preferably in the beverage industry, and even more preferably in the brewing industry.

20. Use of lysine tetramethylene phosphonate and gluconic acid to remove mold from the surface of containers, preferably glass bottles.

21. Use of lysine tetramethylene phosphonate and gluconic acid as a wash solution without scuffing.