WO2025132972A1

WO2025132972A1 - Dishwashing detergent composition

Info

Publication number: WO2025132972A1
Application number: PCT/EP2024/087678
Authority: WO
Inventors: Alias Younis AL-BAYATI; Karlheinz Ulrich Hahn; Pascal Joachim KOZIOL; Irina MULJAJEW; Nils Wedler; Qingcai ZHAO
Original assignee: Reckitt Benckiser Finish BV
Current assignee: Reckitt Benckiser Finish BV
Priority date: 2023-12-20
Filing date: 2024-12-19
Publication date: 2025-06-26
Anticipated expiration: 2026-06-20
Also published as: GB202319689D0

Abstract

The present invention is related to a dishwashing, preferably an automatic dishwashing, detergent composition, wherein the detergent composition comprises at least a first inulin compound. The invention is further related to a use of such an inventive dishwashing, preferably an automatic dishwashing, detergent composition for glass corrosion protection of glass dishwashing goods and/or for decor protection of glass and/or ceramic dishwashing goods.

Description

DISHWASHING DETERGENT COMPOSITION

Field of the Invention

The present invention relates to a dishwashing, preferably an automatic dishwashing, detergent composition.

The invention further relates to a use of such an inventive dishwashing, preferably an automatic dishwashing, detergent composition for glass corrosion protection of glass dishwashing goods.

Background of the Invention

Glassware and glass baking dishes are some of the most frequently used items in the household, and as a result, some of the most often washed in the dishwasher. Unfortunately, sometimes the glass dishes don’t come out perfectly clean. The baked-on residue can be difficult for even the best dishwasher to fully remove. Over time, the high temperatures of repeated washing in the dishwasher can cause cloudy stains on fine stemware and everyday water glasses.

If a consumer lives in a hard water area, deposits might slowly build up in the dishwasher. These mineral deposits, like limescale, can cling to glassware and dishes, causing a cloudy appearance.

However, even when a consumer lives in a soft water area, there is an issue with glass dishwashing goods. The soft water can corrode the glassware over time, and this damage is irreversible. Glass corrosion can also be caused

by long dishwasher cycles, heat exposure and poor-quality glass. In short, the wear and tear of time will affect the glass surface of any glass dishwashing goods.

Therefore, the problem of glassware corrosion in automatic dishwasher processes is well recognised. It has been put forward that the problem of glassware corrosion is the result of two separate phenomena.

Firstly, it is suggested that the corrosion is due to leakage of minerals from the glass network, accompanied by hydrolysis of the silicate network. Secondly, silicate material is suggested to be released from the glass.

These phenomena can cause damage to glassware after a number of separate wash cycles. The damage may include cloudiness, scratches, streaks and other discoloration I detrimental effects.

Silicate materials have been suggested to be effective in preventing materials from being released by the glass composition. However, the use of silicate compounds can have detrimental side effects, such as the tendency to increase separation of silicate material at the glass surface.

A further solution has been to use zinc, either in metallic form or in the form of compounds.

However, the use of soluble zinc compounds can give rise to detrimental side effects, such as the development of a precipitate of insoluble zinc compounds formed by interaction with other species typically present in the dishwasher wash liquor.

This has meant that often insoluble (or rather sparingly soluble) zinc compounds are preferred as the source of zinc in the dishwasher wash liquor. As these zinc compounds have only a low solubility in water it is usual that the compounds are required to have a relatively high surface area, achieved by having a small particle size, in order to attempt to achieve a sufficient concentration in water to obtain the required glass corrosion prevention effect.

However, the use of a small particle size has not been found to overcome the delivery issue and thus, with the use of these insoluble compounds, the problem of glass corrosion effects remains.

The use of glasses and ceramics containing zinc has been found to address the problem of glassware corrosion in a dishwasher. The use of a ceramic I glass zinc containing composition overcomes the problems of poor solubility I precipitation described above whilst offering effective glassware protection.

However, there is still a problem associated with the ceramic I glass zinc containing compositions (and also with water soluble I insoluble zinc compounds) in that these compositions do not perform satisfactorily in the prevention of decorated glassware corrosion.

Glassware (and also other crockery such as plates) may be decorated with a glaze to apply a pattern or design to the glassware I crockery. The glaze typically comprises an admixture of materials, similar to the admixture used in glass preparation, usually further comprising a metal oxide (such as lead oxide) I other compound to give the glaze a colour.

The glaze is usually applied to the glass in a second annealing firing process, normally at a lower temperature than the glass firing process. It is recognised that the lower firing temperature provides the glaze with a lower resilience I higher sensitivity to, for example, dishwashing conditions.

The glaze of decorated glassware I crockery can still suffer from corrosion, even in the presence of a zinc compound. Glaze corrosion has the effect of removing a portion of the glaze from the glassware I crockery over a number of dishwasher cycles. The glaze removal has the effect that the applied patterns lose their shine and the pattern colours fade. As glazes are commonly used on premium glassware products, such as handmade items, consumers washing these products are wary of washing glazed items in a dishwasher. Glazed product manufacturers are also wary of recommending the use of automatic

dishwashing for cleaning these products. This can mean that the consumer has no alternative but to wash such glazed glassware / crockery by hand.

Bismuth has been used as an additive to aid the prevention of corrosion of glazed glassware corrosion.

However, the value of bismuth in this purpose has been diminished by the detrimental effects that the use of bismuth compound has on other components of the washing process. In this regard bismuth has been found to stain plastic materials. Bismuth also causes the formation of a brown stain on non-decorated glassware and cutlery. Also, although the glazed portion of the glassware may receive protection, bismuth has been found to stain the non-glazed portions. For these reasons the use of bismuth as a glaze protector has been avoided.

Therefore, up to now, there is still no ideal solution to provide glass corrosion protection of glass dishwashing goods and/or decor protection of glass and/or ceramic dishwashing goods.

Objective of the present Invention

In view of the prior art, it was thus an object of the present invention to provide a dishwashing, preferably an automatic dishwashing, detergent composition, which shall not exhibit any glass corrosion or any other optical shortcoming, such as decor damages, of the respective glass dishwashing goods. of the Invention

These objects and also further objects which are not stated explicitly but are immediately derivable or discernible from the connections discussed herein by way of introduction are achieved by a dishwashing, preferably an automatic dishwashing, detergent composition having all features of claim 1. Appropriate modifications to the inventive dishwashing, preferably an automatic dishwashing, detergent composition are protected in dependent claims 2 to 14. Claim 15 relates to the use of such a dishwashing, preferably an automatic dishwashing,

detergent composition for glass corrosion protection of glass dishwashing goods and/or for decor protection of glass and/or ceramic dishwashing goods.

The present invention accordingly provides a dishwashing, preferably an automatic dishwashing, detergent composition, wherein the detergent composi- tion comprises at least a first inulin compound; wherein said at least first inulin compound has the following polymeric repeating unit formula:

wherein at least one, preferably at least two, R moieties can be individually selected from the group consisting of R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

Ri = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety;

a > 0;

R = -[Ri-O]_a -[R2-O]b-H; wherein

Ri = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; a > 0;

R2 = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; b > 0; with the proviso that a+b > 1 ;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H; OH;

X2 = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H; OH;

X3 = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H;

X4 = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H;

Xs = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H;

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H; and

wherein n = 2 to 100, preferably 10 to 70, more preferably 20 to 50.

It is thus possible in an unforeseeable manner to provide a dishwashing, preferably an automatic dishwashing (ADW), detergent composition, which does not exhibit any glass corrosion or any other optical shortcoming of the respective glass dishwashing goods.

The present invention discloses a surprising technical advantage of a particular cationic inulin in a particular concentration window in dishwashing, preferably in automatic dishwashing (ADW), detergent compositions. This polymer is demonstrated to show surprising glass corrosion protection.

In particular, the dishwashing detergent composition of the present invention ensures glass caring properties, especially glass corrosion properties, being at least comparable to the commonly used dishwashing detergent compositions comprising high amounts of other glass caring agents.

Brief Description of the tables

Objects, features, and advantages of the present invention will also become apparent upon reading the following description in conjunction with the tables, in which:

Table 1 exhibits experimental formulations used in the examples.

Table 2 exhibits comparative and inventive formulations.

Table 3 exhibits a summary of Performance results.

Detailed Description of the Invention

The expression “substantially free” means in the context of the present invention a concentration of less than 0.25 wt%, preferably less than 0.2 wt%, and more preferably less than 0.1 wt%.

As used herein, the term "suitable anion", used in reference to anion Y refers to a monovalent, divalent or trivalent anion. That suitable anion shall ensure (as also-called “counterion”) compensation or equalization of the positive charges comprised in said inulin, when at least one moiety R = -[CXiX2]c - NX₃X₄X₅ ⁺ is comprised in the respective inulin, which is the respective positively charged ammonium group. Herein, halide ions, preferably chloride and bromide ions, are especially preferred as suitable counterions.

In the context of the present invention (for clarification purposes), if the integer “a” in “R = -[Ri-O]a -H” or“R = -[Ri-O]a -[R2-O]b -H” is greater than 1 , the two Ri moieties can be individually chosen from the respective list given in the respective claim. They can be identical or different.

The same applies to R2 in case that “b” is greater than 1 .

The same applies to Xi and X2 in case that “c” is greater than 1 in “R = - [CXIX2]C -NX₃X₄X5⁺ Y-“.

Additionally, Xi and X2 in “R = -[CXIX2]C-NX₃X₄XS⁺ Y’“ can always be freely chosen from the respective list given in the respective claim. Thus, X1 and X2 can be identical or different in each repeating unit “c”.

As used herein, the terms "wt%", “%wt”, “weight %”, and “% by weight” are synonyms to each other. All of these expressions are referring to a weight percentage of the respective component.

In one embodiment, the detergent composition further comprises at least a second inulin compound; wherein said at least second inulin compound has the following polymeric repeating unit formula:

wherein at least one, preferably at least two, R moieties can be individually selected from the group consisting of

R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

R1 = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; a > 0; R = -[Ri-O]_a -[R2-O]b -H; wherein

R1 = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; a > 0;

R2 = C2 - Cs, preferably C2 - C₄, most preferably C2 - C3, alkylene moiety; b > 0; with the proviso that a+b > 1 ;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = Ci - Cs, preferably Ci - C₄, most preferably Ci - C2, hydrocarbon moiety; H; OH;

X2 = Ci - Cs, preferably Ci - C₄, most preferably Ci - C2, hydrocarbon moiety; H; OH;

X₃ = Ci - Cs, preferably Ci - C₄, most preferably Ci - C2, hydrocarbon moiety; H;

X₄ = Ci - Cs, preferably Ci - C₄, most preferably Ci - C2, hydrocarbon moiety; H;

X5 = Ci - Cs, preferably Ci - C₄, most preferably Ci - C2, hydrocarbon moiety; H;

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H; wherein n = 2 to 100, preferably 10 to 70, more preferably 20 to 50; and wherein said at least second inulin compound has a different chemical structure than the at least first inulin compound.

In a preferred embodiment thereof, all R moieties of said at least first inulin compound and/or all R moieties of said at least second inulin compound are individually selected from the group consisting of

R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

R = -[Ri-O]a -[R2-O]b-H; wherein

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

X₃ = Ci - Cs, preferably Ci - C4, most preferably Ci - C2, hydrocarbon moiety; H;

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H.

In an even more preferred embodiment thereof, all R moieties of said at least first inulin compound and/or all R moieties of said at least second inulin compound are individually selected from the group consisting of

R = Ci - C4 hydrocarbon moiety;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = Ci - C2 hydrocarbon moiety; H; OH;

X2 = Ci - C2 hydrocarbon moiety; H; OH;

X₃ = Ci - C2 hydrocarbon moiety; H;

X4 = Ci - C2 hydrocarbon moiety; H;

Xs = Ci - C2 hydrocarbon moiety; H;

Y' = suitable anion; c = 3 to 4;

R = H.

In one embodiment, all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise at least one R moiety defined as follows:

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = H; OH;

X₂ = H; OH;

X₃ = Ci - C2 hydrocarbon moiety;

X₄ = Ci - C2 hydrocarbon moiety;

Xs = Ci - C2 hydrocarbon moiety;

Y' = suitable anion; c = 3.

In one embodiment, all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise a degree of substitution ranging from 0.1 to 3, preferably from 0.2 to 2, more preferably from 0.3 to 1 .5; and most preferably from 0.5 to 1 .4.

In one embodiment, the detergent composition comprises 0.02 to 0.5 wt%, preferably 0.03 to 0.4 wt%, and more preferably 0.04 to 0.2 wt% of said at least first inulin compound and/or said at least second inulin compound.

In one embodiment, all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise an active matter content ranging from 25 to 60 wt%, preferably from 30 to 55 wt%, and more preferably from 34 to 48 wt%.

In one embodiment, all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise an active matter content greater

than 30 wt%, preferably greater than 35 wt%, and more preferably greater than 40 wt%.

In one embodiment, the detergent composition is substantially free, preferably completely free, of any further glass corrosion inhibitors, glass protecting agents, and/or glass caring agents.

In one embodiment, the detergent composition is substantially free, preferably completely free, of any bleaching agent, bleaching system and/or bleaching activator.

The dishwashing, preferably automatic dishwashing, detergent composition of the present invention can comprise a builder.

The builder may be a phosphate-free builder. In many countries, including the United States and in the European Union, phosphate builders are restricted, or the amount of phosphate permitted in a detergent composition has been severely limited. Therefore, in preferred embodiments, the detergent compositions are substantially phosphate-free.

The builder comprises one or more small molecule builders selected from hydroxycarboxylates (such as a citrate salt, for example trisodium citrate, which may be anhydrous), aminocarboxylates (such as methyl glycine diacetic acid (MGDA), or N,N-dicarboxymethyl glutamic acid (GLDA)), dicarboxylic acid amines (such as iminodisuccinic acid (IDS)) and/or phosphates (such as tripolyphosphate), or the salts thereof.

The builder may be present in an amount of greater than 10 %wt., 15 %wt., 20 %wt., 25%wt., 30 wt.%, 35 %wt., 40 %wt., 45 %wt., or greater than 50 %wt. The builder may be present in an amount between 31 and 49 wt.%, between 32 and 41 %wt., or between 33 and 39 %wt.

The builder may be present in an amount up to 0.1 %wt., 0.2 %wt., 0.3 %wt., 0.4 %wt., 0.5 %wt., 0.6 %wt., 0.7 %wt., 0.8 %wt., 0.9 %wt., 1 %wt., 1.5

%wt., 2 %wt., 3 %wt., 4 %wt., 5 %wt., 6 %wt., 7 %wt., 8 %wt., 9 %wt. or up to 10

%Wt.

The actual amount used in the detergent composition may depend upon the nature of the builder used.

In one embodiment, the detergent composition further comprises 10 to 45 wt%, preferably 15 to 35 wt%, and more preferably 20 to 30 wt% of a builder; wherein the builder comprises hydroxycarboxylates, preferably a citrate salt, more preferably trisodium citrate; and aminocarboxylates, preferably methyl glycine diacetic acid (MGDA) or N,N-dicarboxymethyl glutamic acid (GLDA).

In one embodiment, the detergent composition further comprises 10 to 45 wt%, preferably 15 to 35 wt%, and more preferably 15 to 25 wt% of a builder; wherein the builder comprises hydroxycarboxylates, preferably a citrate salt, more preferably trisodium citrate; and wherein the builder is substantially free, preferably completely free, of any aminocarboxylates, preferably methyl glycine diacetic acid (MGDA) or N,N-dicarboxymethyl glutamic acid (GLDA).

The dishwashing, preferably automatic dishwashing, detergent composition of the present invention can comprise one or more surfactant(s). Any of nonionic, anionic, cationic, amphoteric or zwitterionic surface active agents or suitable mixtures thereof may be used. Many such suitable surfactants are described in Kirk Othmer's Encyclopedia of Chemical Technology, 3rd Ed., Vol. 22, pp. 360-379, "Surfactants and Detersive Systems", incorporated by reference herein.

In the case of automatic dishwashing compositions, it is preferred to minimise the amount of anionic surfactant. Accordingly, preferably the composition comprises no more than 15 %wt., no more than 10 %wt., no more than 5 %wt., no more than 2 %wt, no more than 1 %wt., or no anionic surfactant. Preferably the composition comprises no more than 15 %wt., no more than 10 %wt., no more than 5 %wt., no more than 2 %wt., no more than 1 %wt., or no ionic surfactant of any type.

Non-ionic surfactants are preferred for automatic dishwashing products. The non-ionic surfactant may be an optionally end capped alkyl alkoxylate. A preferred class of non-ionic surfactants are ethoxylated non-ionic surfactants prepared by the reaction of a monohydroxy alkanol or alkyl phenol with 6 to 20 carbon atoms. Preferably the surfactants have at least 12 moles per mole of alcohol or alkyl phenol. Particularly preferred non-ionic surfactants are the non-ionics from a linear chain fatty alcohol with 10-20 carbon atoms and at least 5 moles of ethylene oxide per mole of alcohol. The non-ionic surfactant may comprise propylene oxide (PO) units in the molecule. The PO units may constitute up to 40 %wt., 35 %wt., 30 %wt., 25 %wt., 20 %wt. or up to 15 %wt. of the overall molecular weight of the non-ionic surfactant.

The use of a mixture of any of the aforementioned non-ionic surfactants is suitable in compositions of the present invention.

In one embodiment, the detergent composition further comprises 1 to 30 wt%, preferably 2 to 15 wt%, and more preferably 4 to 8 wt% of a non-ionic surfactant.

In one embodiment, the detergent composition further comprises 1 to 15 wt%, preferably 1 to 10 wt%, and more preferably 1 to 5 wt% of a phosphonate.

In one embodiment, the detergent composition is wrapped into at least one water-soluble film comprising polyvinyl alcohol (PVOH), preferably being a PVOH foil; wherein preferably such a water-soluble film has a thickness ranging from 50 to 150 micrometers; and wherein in particular 300 to 600 mg of such a water- soluble film material is required for a monodose ADW product.

In a preferred embodiment, a “hydrocarbon moiety” means an alkyl group.

Further, the object of the present invention is also solved by the use of such an inventive dishwashing, preferably an automatic dishwashing, detergent composition for glass corrosion protection of glass dishwashing goods and/or for decor protection of glass and/or ceramic dishwashing goods.

The present invention thus addresses the problem of providing a dishwashing, preferably an automatic dishwashing, detergent composition, which reduces or ideally even completely avoids any glass corrosion being at least comparable to the commonly used dishwashing detergent compositions comprising high amounts of other glass caring agents.

The following non-limiting examples are provided to illustrate an embodiment of the present invention and to facilitate understanding of the invention but are not intended to limit the scope of the invention, which is defined by the claims appended hereto. Experimental Part:

The following basis formulation has been used for the experiments of the present invention. All formulations tested have been identical except for the presence or non-presence of a glass caring agent.

Table 1 : Experimental formulations used in the examples.

Table 2 shows the presence or non-presence of a glass caring agent and the weight percentage (wt%) applied.

Table 2: Comparative and inventive formulations.

Herein, the comparative example is executed without any glass caring agent. All inventive examples 1 to 6 are executed by using a certain amount (given in wt% in Table 2 above) of a concentrated aqueous solution of a respective glass caring agent. The glass caring agent used herein in all inventive examples is a hydroxypropyltrimonium inulin, namely Quatin® 1280 TQ D, Quatin® 680 UP-D, or Quatin® 350 UP-D.

Quatin® 1280 TQ D, a commercially available product from the Cosun Beet Company, has an average degree of substitution of 1 .18-1 .38. It is provided as a concentrated aqueous solution, wherein Quatin® 1280 TQ D has an active matter content of 36 wt%.

Quatin® 680 UP-D, a commercially available product from the Cosun Beet Company, has an average degree of substitution of 0.6-0.75. It is provided as a concentrated aqueous solution, wherein Quatin® 680 UP-D has an active matter content of 45 wt%.

Quatin® 350 UP-D, a commercially available product from the Cosun Beet Company, has an average degree of substitution of 0.3-0.4. It is provided as a concentrated aqueous solution, wherein Quatin® 350 UP-D has an active matter content of 41 wt%.

Quatin® herein represents a cationic inulin according to claim 1 having the following polymeric repeating unit formula:

wherein both R moieties are a -CH2-CH(OH)-N⁺(CH3)3 moiety having a chloride ion as suitable counterion.

Glass Corrosion Test

For the glass corrosion tests, the dishwasher model Miele G 1222 SC GSL was used and a program with main rinse temperature of 65°C is selected.

The water hardness was set to < 1 °GH. The machine is loaded with clear glasses, clear glasses with decoration and ceramics with decoration. No artificial soil is added to the dishwasher.

29.5g of the Formulations are dosed in the dosage chamber of the ma- chine.

The articles are visually examined in natural light after 50 cycles to fix the degree of surface damage. Furthermore, the mass loss of glasses is measured.

Scores range from 1 -5 while 5 means no damage of the glass and 1 means very strong surface damage (higher numbers indicate superiority). A significant difference is a score for 0.5 on clouding, cordlines and decoloration.

Table 3: Summary of Performance results.

*: higher numbers indicate technical superiority.

**: lower numbers indicate technical superiority. While the principles of the invention have been explained in relation to certain particular embodiments, and are provided for purposes of illustration, it is to be understood that various modifications thereof will become apparent to those skilled in the art upon reading the specification. Therefore, it is to be understood that the invention disclosed herein is intended to cover such modifications as fall within the scope of the appended claims. The scope of the invention is limited only by the scope of the appended claims.

Claims

C L A I M S

1. A dishwashing, preferably an automatic dishwashing, detergent composition, characterized in that the detergent composition comprises at least a first inulin compound; wherein said at least first inulin compound has the following polymeric repeating unit formula:

R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

Ri = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety;

R = -[Ri-0]_a -[R2-0]b-H; wherein i = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; a > 0;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H; and wherein n = 2 to 100, preferably 10 to 70, more preferably 20 to 50.

2. Dishwashing, preferably an automatic dishwashing, detergent composition according to claim 1 characterized in that the detergent composition further comprises at least a second inulin compound; wherein said at least second inulin compound has the following polymeric re- peating unit formula:

R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

R = -[Ri-0]_a -[ 2-0]b-H; wherein i = C2 - Cs, preferably C2 - C4, most preferably C2 - C3, alkylene moiety; a > 0;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H; wherein n = 2 to 100, preferably 10 to 70, more preferably 20 to 50;

and wherein said at least second inulin compound has a different chemical structure than the at least first inulin compound.

3. Dishwashing, preferably an automatic dishwashing, detergent composition according to claim 1 or 2 characterized in that all R moieties of said at least first inulin compound and/or all R moieties of said at least second inulin compound are individually selected from the group consisting of

R = Ci - C12, preferably Ci - Cs, more preferably Ci - C4, hydrocarbon moiety;

R = -[Ri-O]_a -H; wherein

R = -[Ri-O]a -[R2-O]b-H; wherein

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Y' = suitable anion; c = 1 - 8, preferably 2 - 4, more preferably 3 to 4;

R = H.

4. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that all R moieties of said at least first inulin compound and/or all R moieties of said at least second inulin compound are individually selected from the group consisting of

R = Ci - C4 hydrocarbon moiety;

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = Ci - C2 hydrocarbon moiety; H; OH;

X2 = Ci - C2 hydrocarbon moiety; H; OH;

X₃ = Ci - C2 hydrocarbon moiety; H;

X4 = Ci - C2 hydrocarbon moiety; H;

Xs = Ci - C2 hydrocarbon moiety; H;

Y' = suitable anion; c = 3 to 4;

R = H.

5. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise at least one R moiety defined as follows:

R = -[CXIX2]C -NX₃X₄X5⁺ Y- ; wherein

Xi = H; OH;

X₂ = H; OH;

X3 = Ci - C2 hydrocarbon moiety;

X₄ = Ci - C2 hydrocarbon moiety;

X5 = Ci - C2 hydrocarbon moiety;

Y' = suitable anion; c = 3.

6. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise a degree of substitution ranging from 0.1 to 3, preferably from 0.2 to 2, more preferably from 0.3 to 1 .5; and most preferably from 0.5 to 1 .4.

7. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the

detergent composition comprises 0.02 to 0.5 wt%, preferably 0.03 to 0.4 wt%, and more preferably 0.04 to 0.2 wt% of said at least first inulin compound and/or said at least second inulin compound.

8. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that all of said at least first inulin compounds and/or all of said at least second inulin compounds comprise an active matter content ranging from 25 to 60 wt%, preferably from 30 to 55 wt%, and more preferably from 34 to 48 wt%.

9. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition is substantially free, preferably completely free, of any further glass corrosion inhibitors, glass protecting agents, and/or glass caring agents.

10. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition is substantially free, preferably completely free, of any bleaching agent, bleaching system and/or bleaching activator.

11 . Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition further comprises 10 to 45 wt%, preferably 15 to 35 wt%, and more preferably 20 to 30 wt% of a builder; wherein the builder comprises hydroxycarboxylates, preferably a citrate salt, more preferably trisodium citrate; and aminocarboxylates, preferably methyl glycine diacetic acid (MGDA) or N,N-dicarboxymethyl glutamic acid (GLDA).

12. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition further comprises 10 to 45 wt%, preferably 15 to 35 wt%, and more preferably 15 to 25 wt% of a builder; wherein the builder comprises hydroxycarboxylates, preferably a citrate salt, more preferably trisodium citrate; and wherein the builder is substantially free, preferably completely free, of any aminocarboxylates, preferably methyl glycine diacetic acid (MGDA) or N,N-dicarboxymethyl glutamic acid (GLDA).

13. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition further comprises 1 to 30 wt%, preferably 2 to 15 wt%, and more preferably 4 to 8 wt% of a non-ionic surfactant.

14. Dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims characterized in that the detergent composition further comprises 1 to 15 wt%, preferably 1 to 10 wt%, and more preferably 1 to 5 wt% of a phosphonate.

15. Use of a dishwashing, preferably an automatic dishwashing, detergent composition according to one of the preceding claims for glass corrosion protection of glass dishwashing goods and/or for decor protection of glass and/or ceramic dishwashing goods.