Composition comprising polyalkyleneimines

Abstract

The present invention provides the use of a composition comprising a polyalkyleneimine and/or salts or derivatives thereof for the prevention of corrosion of non-metallic in organic items during a washing or rinsing process, in particular during an automatic dishwashing process.

Claims

1. A composition comprising a polyalkyleneimine, a salt of a polyalkyleneimine, and/or a derivative of a polyalkyleneimine in an amount of 0.01 mg to 10 mg per wash and/or rinse cycle of an automatic dishwashing machine, wherein the composition is provided to the automatic dishwashing machine.

2. The composition according to claim 1, wherein the number average molecular weight of the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine is in the range of from 100 to 5,000,000.

3. The composition according to claim 1, wherein the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine comprises a polyethyleneimine, a salt of a polyethyleneimine, and a derivative of a polyethyleneimine.

4. The composition according to claim 3, wherein the composition comprises a polyethyleneimine.

5. The composition according to claim 1, wherein the composition is an automatic dishwashing composition comprising the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine in an amount of from 0.0001 wt % to 50 wt % of the composition.

6. The composition according to claim 1, wherein the composition is an automatic dishwashing rinse aid comprising the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine in an amount of from 0.0005 wt % to 70 wt % of the composition.

7. The composition according to claim 1, wherein the composition is a water softening salt composition comprising the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine in an amount of from 0.0001 wt % to 90 wt % of the composition.

8. The composition according to claim 1, wherein the composition is a machine cleaner or machine additive composition comprising the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine in an amount of from 0.0001% wt-90% wt of the composition.

9. The composition according to claim 1, wherein the composition is in a form selected from the group consisting of a liquid, a gel, a powder, and a tablet.

10. The composition according to claim 9, wherein the composition is at least partially present in a water-soluble pouch.

11. The composition according to claim 9, wherein the composition is at least partially coated with a water-soluble coating.

12. The composition according to claim 9, wherein when the composition is in the form of a liquid or a gel, the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine is soluble in the liquid or gel.

13. The composition according to claim 9, wherein when the composition is in the form of a liquid or a gel, the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine is insoluble in the liquid or gel.

14. The composition according to claim 10, wherein the water-soluble pouch comprises the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine.

15. The composition according to claim 11, wherein the water-soluble coating comprises the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine.

16. An automatic dishwashing detergent composition comprising a polyalkyleneimine, a salt of a polyalkyleneimine, and/or a derivative of a polyalkyleneimine in an amount of 0.01 mg to 10 mg per wash and/or rinse cycle of an automatic dishwashing machine.

17. The automatic dishwashing detergent composition according to claim 16, wherein the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine is present in an amount of from 0.0001% wt-50% wt of the automatic dishwashing detergent composition.

18. The automatic dishwashing detergent composition according to claim 16, wherein the automatic dishwashing detergent is in the form of a tablet.

19. The automatic dishwashing detergent composition according to claim 16, wherein the automatic dishwashing detergent is at least partially present in a water-soluble pouch.

20. The automatic dishwashing detergent composition according to claim 16, wherein the polyalkyleneimine, the salt of the polyalkyleneimine, and/or the derivative of the polyalkyleneimine has a number average molecular weight in the range of from 100 to 5,000,000.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) To facilitate an understanding of the principles and features of the various embodiments of the invention, various illustrative embodiments are explained below. Although exemplary embodiments of the invention are explained in detail, it is to be understood that other embodiments are contemplated. Accordingly, it is not intended that the invention is limited in its scope to the details of construction and arrangement of components set forth in the following description or examples. The invention is capable of other embodiments and of being practiced or carried out in various ways. Also, in describing the exemplary embodiments, specific terminology will be resorted to for the sake of clarity.

(2) It must also be noted that, as used in the specification and the appended claims, the singular forms a, an and the include plural references unless the context clearly dictates otherwise. For example, reference to a component is intended also to include composition of a plurality of components. References to a composition containing a constituent is intended to include other constituents in addition to the one named. In other words, the terms a, an, and the do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item.

(3) As used herein, the term and/or may mean and, it may mean or, it may mean exclusive-or, it may mean one, it may mean some, but not all, it may mean neither, and/or it may mean both. The term or is intended to mean an inclusive or.

(4) Also, in describing the exemplary embodiments, terminology will be resorted to for the sake of clarity. It is intended that each term contemplates its broadest meaning as understood by those skilled in the art and includes all technical equivalents which operate in a similar manner to accomplish a similar purpose. It is to be understood that embodiments of the disclosed technology may be practiced without these specific details. In other instances, well-known methods, structures, and techniques have not been shown in detail in order not to obscure an understanding of this description. References to one embodiment, an embodiment, example embodiment, some embodiments, certain embodiments, various embodiments, etc., indicate that the embodiment(s) of the disclosed technology so described may include a particular feature, structure, or characteristic, but not every embodiment necessarily includes the particular feature, structure, or characteristic. Further, repeated use of the phrase in one embodiment does not necessarily refer to the same embodiment, although it may.

(5) Ranges may be expressed herein as from about or approximately or substantially one particular value and/or to about or approximately or substantially another particular value. When such a range is expressed, other exemplary embodiments include from the one particular value and/or to the other particular value. Further, the term about means within an acceptable error range for the particular value as determined by one of ordinary skill in the art, which will depend in part on how the value is measured or determined, i.e., the limitations of the measurement system. For example, about can mean within an acceptable standard deviation, per the practice in the art. Alternatively, about can mean a range of up to 20%, preferably up to 10%, more preferably up to 5%, and more preferably still up to 1% of a given value. Alternatively, particularly with respect to biological systems or processes, the term can mean within an order of magnitude, preferably within 2-fold, of a value. Where particular values are described in the application and claims, unless otherwise stated, the term about is implicit and in this context means within an acceptable error range for the particular value.

(6) Similarly, as used herein, substantially free of something, or substantially pure, and like characterizations, can include both being at least substantially free of something, or at least substantially pure, and being completely free of something, or completely pure.

(7) By comprising or containing or including is meant that at least the named compound, element, particle, or method step is present in the composition or article or method, but does not exclude the presence of other compounds, materials, particles, method steps, even if the other such compounds, material, particles, method steps have the same function as what is named.

(8) Throughout this description, various components may be identified having specific values or parameters, however, these items are provided as exemplary embodiments. Indeed, the exemplary embodiments do not limit the various aspects and concepts of the present invention as many comparable parameters, sizes, ranges, and/or values may be implemented. The terms first, second, and the like, primary, secondary, and the like, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

(9) It is noted that terms like specifically, preferably, typically, generally, and often are not utilized herein to limit the scope of the claimed invention or to imply that certain features are critical, essential, or even important to the structure or function of the claimed invention. Rather, these terms are merely intended to highlight alternative or additional features that may or may not be utilized in a particular embodiment of the present invention. It is also noted that terms like substantially and about are utilized herein to represent the inherent degree of uncertainty that may be attributed to any quantitative comparison, value, measurement, or other representation.

(10) The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as 50 mm is intended to mean about 50 mm.

(11) It is also to be understood that the mention of one or more method steps does not preclude the presence of additional method steps or intervening method steps between those steps expressly identified. Similarly, it is also to be understood that the mention of one or more components in a composition does not preclude the presence of additional components than those expressly identified.

(12) The materials described hereinafter as making up the various elements of the present invention are intended to be illustrative and not restrictive. Many suitable materials that would perform the same or a similar function as the materials described herein are intended to be embraced within the scope of the invention. Such other materials not described herein can include, but are not limited to, materials that are developed after the time of the development of the invention, for example. Any dimensions listed in the various drawings are for illustrative purposes only and are not intended to be limiting. Other dimensions and proportions are contemplated and intended to be included within the scope of the invention.

(13) In the present invention it is understood that the term non-metallic inorganic item includes items made of glass (such as drinking glasses and plates) which may be decorated (such as with a glaze and or with etching/glass addition). The term non-metallic inorganic item is also understood to include other items of dishware, which may comprise a material other than glass (such as a ceramic). A group of materials called glass ceramics (which have a state intermediate between glass and ceramic) are also encompassed by the term non-metallic inorganic items. Moreover, items which can have a glass/glaze coating and/or decoration (such as a glazed ceramic plate or which have an enamelled layer e.g., an enamelled aluminium pan) are also included in the term non-metallic inorganic item.

(14) The term polyalkyleneimine as used herein encompasses any alkyleneimine comprising 2 or more alkyleneimine repeating units, and thus alkyleneimine oligomers, such as ethyleneimine oligomers are included within the term. Typically, the polyalkyleneimine will comprise from 2 to 50,000 alkyleneimine repeating units, preferably 10 to 25,000, such as 50 to 10,0000.

(15) Unless otherwise stated or required by the context, all percentages herein are given as weight percentages based on the total weight of the composition. Reference herein to polyalkyleneimine(s) includes reference to the salts and/or derivatives thereof.

(16) It has been found that polyalkyleneimines and/or salts or derivatives thereof have especially beneficial properties in the prevention of corrosion of non-metallic inorganic items such as glassware, glass ceramics, ceramics and enamels. This has been found particularly in automatic dishwashing processes. Indeed, not only is the composition highly effective at protecting normal glassware but also the composition has been found to be highly effective in protecting glazed glassware/crockery. Thus, a single compound may now be used to provide corrosion protection for both decorated glassware/crockery and non-decorated glassware especially in a automatic dishwasher.

(17) Additionally, the protection effects on non-metallic inorganic items have been found to be substantive. Namely the beneficial effects, e.g., of glass protection and glaze protection have been found to be achieved in subsequent cleaning and/or rinsing cycles (even in the absence of the composition of the present invention in these subsequent cleaning and/or rinsing cycles).

(18) The polyalkyleneimine and/or salts or derivatives thereof is used in an effective amount to provide the aforementioned corrosion protection effects during a washing or rinsing cycle. The polyalkyleneimine is preferably used in a washing or rinsing cycle in an automatic dishwasher in an amount of from 0.01 mg up to 10 g more, preferably from 0.05 mg up to 5 g, more preferably from 0.1 mg up to 1 g and most preferably from 0.5 mg up to 100 mg per wash or rinse cycle. It is also possible to use the polyalkyleneimine in both the wash and the rinse cycles of an automatic dishwashing machine.

(19) Most preferably, the polyalkyleneimine is part of a detergent or rinse formulation. The detergent formulation may be any common detergent formulation of the type usually employed with automatic dishwashers. The formulation may comprise a liquid, gel, powder or tablet formulation which can be at least partially packed or filled into a water soluble pouch. Similarly, a coating may be used to coat at least a portion of the formulation.

(20) Where the formulation is a liquid/gel, generally the polyalkyleneimine is present in solution within the liquid/gel. However, it is also contemplated to have the polyalkyleneimine present in the liquid/gel in the form of an insoluble solid salt/compound so that the polyalkyleneimine may comprise a suspended particle (e.g., such as a speckle typically found in these formulations). For compositions having a water soluble coating or pouch it is contemplated to have the polyalkyleneimine as part of the coating/pouch composition.

(21) The detergent formulation normally comprises other components which are typically found in dishwasher detergent formulations. In this regard the detergent formulation typically comprises one or more components selected from the group comprising surfactants (non-ionic, anionic, cationic and zwitterionic), builders, enzymes, foam suppressants, bleaches, bleach activators, thickeners, perfumes, dyes, corrosion inhibitors.

(22) When the polyalkyleneimine is present in an automatic dishwasher detergent composition, the polyalkyleneimine preferably comprises from 0.0001% wt-50% wt of the detergent composition, more preferably from 0.0005% wt-5% wt and most preferably 0.001% wt-1% wt of the dishwasher detergent composition (e.g., 10 mg for a 20 g tablet).

(23) The polyalkyleneimine may be also be included in a rinse aid composition. In this case the rinse aid composition preferably comprises from 0.0005% wt-70% wt of the polyalkyleneimine, more preferably from 0.001% wt-50% wt and most preferably 0.005% wt-25% wt, such as from 0.01% wt-5% wt of the rinse aid composition.

(24) The polyalkyleneimine may be also be included in a water softening salt composition. These are commonly used for the regeneration of the ion exchanger present in an automatic dishwasher. In this case the water softening salt composition preferably comprises from 0.0001% wt-90% wt of the water softening salt composition, more preferably 0.001% wt-50% wt and most preferably 0.005% wt-25% wt such as 0.01 to 10% wt of the water softening salt composition.

(25) The polyalkyleneimine may be included in a machine cleaner/machine additive composition. In either of these cases the composition comprises from 0.0001% wt-90% wt of the composition, more preferably from 0.0005% wt-50% wt and most preferably 0.001% wt-10% wt of the composition.

(26) Polyalkyleneimines are commercially available from different suppliers under various trade names e.g., Lugalvan P (ex BASF). Polyalkyleneimines are known to have a very widespread range of average molecular weights, from around 100 up to several million, preferably in the range of from about 100 to about 5,000,000, most preferably of from about 250 to 1,000,000, such as from about 400 to about 100,000. The alkylene group, which is preferably a linear or branched chain, may also for example be cyclic. The alkylene group preferably has from 1 to 50 C atoms, more preferably from 2 to 20, such as from 2 to 5, such as ethylene. These polymers can be linear, branched or end capped. Suitable end-caps include alkylenediamines such as C2-C5 alkylenediamines e.g., ethylenediamines. The polymers may be derivatized e.g. by alkoxylation, ethoxylation, propoxylation protonated, and be provided with or without a counterion. If a counter ion is present any suitable counterion may be used. If a counterion is used which is known to have negative effects in the dishwashing process. e.g., chloride, the chloride counterion is preferably present in the dishwashing process at a concentration of less than 200 mg/litre of dishwashing liquor, more preferably at less than 100 mg/litre, most preferably less than 50 mg/litre in order to avoid rusting, pitting or other types of corrosion on stainless steel e.g., cutlery. Common commercially available polyalkyleneimines are usually available as an admixture mixture of one or more of the above species. A solvent such as water may be present. Any one of these species would be suitable for use in the present invention.

(27) The polyalkyleneimines can be incorporated into the compositions in which they are to be included in any suitable manner.

EXAMPLES

(28) The invention is now further described with reference to the following nonlimiting Examples. Further examples will be apparent to the person skilled in the art.

(29) The present invention is also described and demonstrated by way of the following examples. However, the use of these and other examples anywhere in the specification is illustrative only and in no way limits the scope and meaning of the invention or of any exemplified term. Likewise, the invention is not limited to any particular preferred embodiments described here. Indeed, many modifications and variations of the invention may be apparent to those skilled in the art upon reading this specification, and such variations can be made without departing from the invention in spirit or in scope. The invention is therefore to be limited only by the terms of the appended claims along with the full scope of equivalents to which those claims are entitled.

(30) In these Examples, the detergent composition in Table 1 was used as a detergent formulation base. All percentages are by weight based on the total weight of the composition.

(31) TABLE-US-00001 TABLE 1 Component % wt Sodium Tripolyphosphate 45.0 Sodium Carbonate 24.0 Sodium Bicarbonate 3.0 Citric acid 1.0 Cellulose 1.0 Lactose 1.0 Sodium disilicate 3.0 Polyethyleneglycol (PEG) 7.0 Sodium Percarbonate 10.0 TAED 2.0 Protease 0.9 Amylase 0.4 Non-ionic Surfactant*.sup.1 1.0 Benzotriazole 0.2 Perfume + Dye 0.5 .sup.*1Plurafac.sup.RTM LF500 (ex BASF, Germany)
Test Method

(32) In the examples, test glasses were washed 50 times in a special endurance test dishwasher (Bosch SGS3322).

(33) Cleaning Dosage: 20 g of the base detergent described above in Table 1, optionally further including polyalkyleneimine (with the amount specified in the Examples), with automatic dosing at the beginning of the cleaning cycle.

(34) Water Hardness in the machine: <1 dGH, central softening through ion exchangers, internal ion exchangers not in operation.

(35) Cleaning program 65 C. (both the cleaning and the rinse cycle were operated at 65 C.).

(36) Water consumption per cycle: 20 litres.

(37) There was no soiling on the glassware tested, i.e., they were new, unsoiled, glasses.

(38) The test report comprised the following types of glass, for each glass pattern 2 samples were examined:

(39) Clear Glasses

(40) Arc-International (France): Longchamp, No. 3 17 cl Stemglass, lead crystal glass; Arcoroc Elegance, Wineglass, 14.5 cl.

(41) Nachtmann Bleikristallwerke (Germany): Julia Paola, Weiweinkelch No. 2; Royal Leerdam (Netherlands); Fiori, 14 cl.

(42) Stlze Lausitz GmbH) (Germany): Wasserkelch Professional 205 00 11, 450 ml.

(43) Decorated Glassware

(44) Ritzenhoff & Breker, (Germany): Kinderbecher Flirt, Leonardo (Germany) Latte Macchiato.

(45) Konitz Porzellan GmbH (Germany): LongdrinkSaft Escapada Streifen.

(46) The weight loss was determined gravimetrically after 25 to 50 test washes. Visible changes to the glass surface were evaluated in natural light (iridescence, line corrosion and decoration damage) and/or in a special light box (glass clouding, line corrosion and decoration damage). The dimensions of the light box were 70 cm40 cm65 cm (1bh) and the inside of the box was painted matt black. The box was lit from above with an L 20 w/25 S (60 cm long) Osram lamp, which was covered in front with a screen. Shelves were disposed in the box on which the glasses were placed for evaluation. The box was open at the front.

(47) The glass corrosion was evaluated using the following criteria; glass clouding (GC), line corrosion (LC), decoration damage (DD) and iridescence (IR). For each parameter a score was given in accordance with the Table below.

(48) TABLE-US-00002 Evaluation Damage Impact 0 No damage 1 First minor damage/hardly visible 2 Slight damage, visible to expert or in the light box 3 Visible damage 4 Strong damage, clearly visible

Comparative Example 1

(49) The detergent composition of Table 1 was used as a detergent formulation base. The formulation was used in tablet form. The results of the tests are shown in Table 2a (Glass Corrosion) and Table 2b (Mass Loss).

(50) TABLE-US-00003 TABLE 2a Glass Corrosion 25 cycles 50 Cycles Glasses GC LC IR GC LC IR Longchamp 2.0 2.0 1.0 3.0 3.0 1.0 Julia Paola 2.5 0.5 0.5 3.0 0.5 0.5 Stoelzle 205 00 11 2.0 1.0 2.0 3.0 2.5 2.0 Arcoroc .sup.RTM Elegance 3.0 2.0 1.0 3.5 3.5 1.5 Fiori 2.5 2.5 1.0 3.0 3.5 1.0 Average 2.4 1.6 1.1 3.1 2.6 1.2 Decorated Glassware DD DD Sweet Animals 2.5 3.0 Latte Macchiato 3.0 3.5 Escapada 3.0 3.5 Average 2.8 3.3

(51) TABLE-US-00004 TABLE 2b Mass Loss 25 cycles 50 cycles Mass Loss (mg) Mass Loss (mg) Glasses Longchamp 34 59 Julia Paola 26 56 Stoelzle 205 00 11 10 34 Arcoroc .sup.RTM Elegance 11 14 Fiori 3 13 Sum 84 177 Decorated Glassware Sweet Animals 138 289 Latte Macchiato 27 53 Escapada 235 468 Sum 400 810

Example 1

(52) In this example, 100 mg of polyethyleneimine, ethylenediamine end-capped (average Mw800 by LS, average Mn600 by GPC, ex Sigma Aldrich Co) was added in addition to the detergent composition of Table 1. The results of the tests are shown in Table 3a (Glass Corrosion) and Table 3b (Mass Loss).

(53) TABLE-US-00005 TABLE 3a Glass Corrosion 25 cycles 50 Cycles Glasses GC LC IR GC LC IR Longchamp 1.5 1.0 1.5 2.0 1.0 1.0 Julia Paola 0.5 0.5 0.5 1.0 0.5 0.5 Stoelzle 205 00 11 2.0 1.5 1.5 2.0 1.5 1.5 Arcoroc .sup.RTM Elegance 2.0 1.5 1.5 2.5 2.0 1.0 Fiori 0.5 1.0 1.0 1.0 1.5 1.0 Average 0.3 1.1 1.2 1.7 1.3 1.0 Decorated Glassware DD DD Sweet Animals 2.5 3.0 Latte Macchiato 2.0 2.0 Escapada 2.0 2.5 Average 2.2 2.5

(54) TABLE-US-00006 TABLE 3b Mass Loss 25 cycles 50 cycles Mass Loss (mg) Mass Loss (mg) Glasses Longchamp 8 14 Julia Paola 6 14 Stoelzle 205 00 11 5 10 Arcoroc .sup.RTM Elegance 1 3 Fiori 4 5 Sum 24 47 Decorated Glassware Sweet Animals 56 111 Latte Macchiato 12 28 Escapada 88 184 Sum 156 323

(55) In contrast to Comparative Example 1, the addition of 100 mg (0.5 wt %) polyethyleneimine, ethylenediamine end capped provides both non-decorated glassware corrosion protection and decorated glassware protection. The visual surface damage and the mass loss on the test glasses were reduced with the composition of Example 1 compared to washing with the comparative detergent composition of Table 1.

(56) Additionally, a long-term corrosion protection benefit was observed with Example 1. Following the test with the polyethyleneimine, ethylenediamine end capped the test of the Comparative Example 1 (using the detergent of Table 1 and a new set of dishware) was repeated in the automatic dishwasher used for the test of Example 1. Surprisingly, even though no polyalkyleneimine had been added to the formulation of Comparative Example 1 less damage occurred to clear and decorated glassware than would have been expected from the results shown above obtained for Comparative Example 1.

(57) Without intending to be bound by any theory, it is postulated that the polyalkyleneimine may be absorbed/adsorbed onto parts of the dishwasher (e.g. tubes, spray-arms, racks, sieves) and is released over a number of cycles thereafter thus providing a corrosion protection benefit in subsequent cycles.

(58) Accordingly, for any new test the dishwasher had to be cleaned for 50 cycles with the detergent of Table 1 without adding any polyalkyleneimine, otherwise the polyalkyleneimine residues inside the dishwasher could have influenced the results of any subsequent test.

Example 2

(59) In this example, 100 mg of ethyleneimine, oligomer mixture; a mixture of linear and branched chains and with 5-25% wt tetraethylenepentamine (average Mn423, ex Sigma Aldrich Co) was added in addition to the detergent composition of Table 1. The results of the tests are shown in Table 4a (Glass Corrosion) and Table 4b (Mass Loss).

(60) TABLE-US-00007 TABLE 4a Glass Corrosion 25 cycles 50 Cycles Glasses GC LC IR GC LC IR Longchamp 0.5 0.5 1.0 1.5 0.5 1.0 Julia Paola 0.0 0.0 0.5 1.0 0.5 0.5 Stoelzle 205 00 11 1.0 0.5 1.0 1.0 1.0 1.0 Arcoroc .sup.RTM Elegance 2.0 1.5 1.0 2.5 2.0 1.0 Fiori 0.0 0.5 0.5 0.5 1.0 1.0 Average 0.7 0.6 0.8 1.3 1.0 0.9 Decorated Glassware DD DD Sweet Animals 3.0 3.5 Latte Macchiato 3.0 3.5 Escapada 2.5 3.5 Average 2.8 3.5

(61) TABLE-US-00008 TABLE 4b Mass Loss 25 cycles 50 cycles Mass Loss (mg) Mass Loss (mg) Glasses Longchamp 9 13 Julia Paola 3 12 Stoelzle 205 00 11 1 10 Arcoroc .sup.RTM elegance 5 11 Fiori 6 9 Sum 23 53 Decorated Glassware Sweet Animals 102 213 Latte Macchiato 7 26 Escapada 160 300 Sum 269 539

(62) In contrast to Comparative Example 1, the addition of 100 mg (0.5 wt %) of the ethyleneimine, oligomer mixture above provides non-decorated glassware corrosion protection. The visual surface modifications and the mass loss on the test glasses were reduced compared to Comparative Example 1.

(63) For decorated glassware the addition of the ethyleneimine, oligomer mixture above reduced the mass loss of these decorated glassware.

Example 3

(64) In this example 1 mg (0.005 wt %) of branched polyethyleneimine (average Mw25,000 by LS, average Mn10,000 by GPC, ex Sigma Aldrich Co) was added to the detergent composition of Table 1. The results of the tests are shown in Table 5a (Glass Corrosion) and Table 5b (Mass Loss).

(65) TABLE-US-00009 TABLE 5a Glass Corrosion 25 cycles 50 Cycles Glasses GC LC IR GC LC IR Longchamp 1.5 1.5 1.0 2.5 1.5 1.0 Julia Paola 1.0 0.5 1.5 1.5 0.5 1.5 Stoelzle 205 00 11 2.0 1.0 2.0 2.5 1.5 1.5 Arcoroc .sup.RTM Elegance 2.5 2.0 1.5 2.5 2.0 1.5 Fiori 1.5 1.5 1.0 2.0 1.5 1.0 Average 1.7 1.3 1.4 2.2 1.4 1.3 Decorated Glassware DD DD Sweet Animals 2.5 3.0 Latte Macchiato 2.5 3.0 Escapada 2.0 2.5 Average 2.3 2.8

(66) TABLE-US-00010 TABLE 5b Mass Loss 25 cycles 50 cycles Mass Loss (mg) Mass Loss (mg) Glasses Longchamp 11 15 Julia Paola 10 19 Stoelzle 205 00 11 8 19 Arcoroc .sup.RTM elegance 5 9 Fiori 2 5 Sum 38 67 Decorated Glassware Sweet Animals 88 192 Latte Macchiato 22 28 Escapada 132 299 Sum 242 518
The addition of only 1 mg (0.005 wt %) of branched polyethylenimine, provides non-decorated glassware corrosion protection and decorated glassware protection. Glass clouding, line corrosion, dcor damage and mass loss are all reduced.

Example 4

(67) In this example a bleach and phosphorus-free detergent composition base as shown in Table 6 was used as a base formulation. The formulation was used in tablet form (having a mass of 20 g) with 1 tablet per wash being dispensed at the beginning of the main wash.

(68) The protection performance on glasses and decoration with 100 mg of Lugalvan P (ex BASF, Germany) used in addition to the tablet is shown in Table 7a (Glass Corrosion) and Table 7b (Mass Loss).

(69) TABLE-US-00011 TABLE 6 Component % Methylglycine Diacetate (MGDA) 62.0 Sodium Carbonate 9.0 Surfactants*.sup.2 6.0 Acrylic/sulphonic copolymer*.sup.3 5.0 Polyacrylic acid*.sup.4 5.0 PVP-Copolymer*.sup.5 2.0 Sodium Disilicate 3.0 Polyethylenglycol (PEG) 5.0 Protease 1.5 Amylase 0.5 Anti-Foam 0.5 Perfume + Dye 0.5 *.sup.2mixture of: 2% wt C.sub.16-C.sub.18 fatty alcohol 25 EO, 1% wt Dehypon 3697 GRA M (modified fatty alcohol polyglycolether ex Cognis) and 3% wt Plurafac LF305 (fatty alcohol alcoxylate ex BASF). *.sup.3Norasol LMW 45 (ex Fa. NorsoHaas). *.sup.4Acusol 445 NG (polyacrylic acid homopolymer ex Rohm & Haas). *.sup.5Luvitec VA 64 (ex BASF).

(70) TABLE-US-00012 TABLE 7a Glass Corrosion 50 Cycles detergent from 50 cycles detergent Table 6 + 10 mg Lugal- from Table 6 van P Glasses GC LC IR GC LC IR Longchamp 3.5 3.5 0.5 2.0 1.5 1.0 Julia Paola 2.0 0.5 1.5 1.0 0.5 1.5 Stoelzle 205 00 11 2.5 3.5 0.5 1.0 1.5 0.5 Arcoroc .sup.RTM Elegance 3.5 4.0 1.5 2.0 2.5 1.5 Fiori 3.5 4.0 2.0 1.5 2.0 1.5 Average 3.0 3.1 1.2 1.5 1.6 1.2 Decorated Glassware DD DD Sweet Animals 4.0 2.5 Latte Macchiato 3.5 2.0 Average 3.8 2.3

(71) TABLE-US-00013 TABLE 7b Mass Loss 50 Cycles detergent 50 cycles detergent from Table 6 + 100 mg from Table 6 Mass Lugalvan P Mass Loss (mg) Loss (mg) Glasses Longchamp 115 15 Julia Paola 132 18 Stoelzle 205 00 11 94 17 Arcoroc.sup.RTM Elegance 50 10 Fiori 46 8 Sum 437 68 Decorated Glassware Sweet Animals 420 110 Latte Macchiato 95 36 Sum 515 146

(72) The use of 100 mg (0.5 wt %) Lugalvan P in addition to the detergent tablet, provides non-decorated glassware corrosion protection and decorated glassware protection. Glass clouding, line corrosion, dcor damage and mass loss after 50 dishwashing cycles are reduced dramatically.

Example 5

(73) In this example the ethyleneimine oligomer mixture used in Example 2 was added to the rinse aid composition shown in Table 8.

(74) TABLE-US-00014 TABLE 8 Component of Rinse Aid % Nonionic Surfactant*.sup.6 13.0 Na-Cumene Sulphonate 3.0 Citric acid 0.7 Potassium Sorbate 0.099 Biocide 0.001 Water 79.9 Polyalkyleneimine oligomer mixture (average 3.3 Mn~423) *.sup.6Plurafac .sup.RTM LF 221 (ex BASF)

(75) Three ml of the rinse aid composition was added at the beginning of the automatic dishwasher rinse cycle. In the main wash cycle the detergent of Comparative Example 1 was used.

(76) The protection performance on glasses and decoration is shown in Table 9a (Glass Corrosion) and Table 9b (Mass Loss).

(77) TABLE-US-00015 TABLE 9a Glass Corrosion 25 cycles 50 Cycles Glasses GC LC IR GC LC IR Longchamp 2.0 1.5 1.0 2.5 1.5 1.0 Julia Paola 2.5 0.5 2.0 2.5 0.5 1.5 Stoelzle 205 00 11 2.0 1.0 1.0 2.5 1.5 1.0 Arcoroc .sup.RTM Elegance 2.5 1.5 2.0 2.5 2.0 2.0 Fiori 2.0 2.0 1.0 2.5 1.5 1.5 Average 2.2 1.3 1.4 2.5 1.4 1.4 Decorated Glassware DD DD Sweet Animals 2.5 2.5 Latte Macchiato 3.0 3.0 Escapada 2.5 3.0 Average 2.7 2.8

(78) TABLE-US-00016 TABLE 9b Mass Loss 25 cycles 50 cycles Mass Loss (mg) Mass Loss (mg) Glasses Longchamp 5 10 Julia Paola 14 34 Stoelzle 205 00 11 10 11 Arcoroc .sup.RTM Elegance 9 14 Fiori 8 12 Sum 46 80 Decorated Glassware Sweet Animals 72 155 Latte Macchiato 13 34 Escapada 154 333 Sum 239 522

(79) The rinse aid provides non-decorated glassware corrosion protection and decorated glassware protection. Glass clouding, line corrosion, dcor damage and mass loss are reduced.

(80) While several possible embodiments are disclosed above, embodiments of the present invention are not so limited. These exemplary embodiments are not intended to be exhaustive or to unnecessarily limit the scope of the invention, but instead were chosen and described in order to explain the principles of the present invention so that others skilled in the art may practice the invention. Indeed, various modifications of the invention in addition to those described herein will become apparent to those skilled in the art from the foregoing description. Such modifications are intended to fall within the scope of the appended claims.