ES2238876T3 - USE OF DETERGENT COMPOSITIONS. - Google Patents

Abstract

Use of a non-bleaching washing detergent composition comprising surfactant, adjuvant and optionally other non-bleaching detergent components and also containing from 0.05 to 1.5% by weight of a compound of the formula (I): in which Y is H or OH and X is H or a solubilizing cation to protect new white or colored textile fabrics against color degradation during washing

Description

Use of detergent compositions.

Technical field

The present invention relates to the use of washing detergent compositions suitable for washing both of white tissues as of color. It has been found that compositions containing a sequestrant, iminodisuccinate or hydroxyiminodisuccinate, in controlled quantities, provide a improved maintenance and / or restitution of color fidelity during washing. The presence of the kidnapper also reduces the dye fading due to chlorine in water and also Provides better stain removal.

Background

Certain colors used in the industry Textiles tend to degrade during the washing process. Colored clothing may darken or the color may change as a result of washing, thus changing the appearance and shortening the shelf life of clothing. The garments of White dress can also fade over time, by example yellow.

It has now been found that new tissues can be protected against such color degradation and that can recover the fidelity of the color of the tissues previously washes (i.e. degradation is reversed), if the tissues are wash using non-bleaching detergent compositions, which contain controlled amounts of iminodisuccinic acid or its water soluble salts.

The benefits are especially marked if the Washing is carried out at low pH.

Fading of colored tissues in the washing due to the presence of sodium hypochlorite and others Chlorine compounds in water is also a known problem. Be has found that iminodisuccinic acid and its salts are also effective chlorine scavengers and the inclusion of these compounds It also mitigates this problem.

In addition, the inclusion of these compounds also provides better removal of certain spots, especially of red mud.

Prior art

Iminodisuccinate (IDS) is known as a detergency adjuvant and, in detergent compositions of bleaching, as a stabilizer for bleaching precursors peroxi

US 3 697 453 (Pfizer) describes detergent compositions having a pH of from 9 to 12, which contain iminodisuccinate as a detergency adjuvant, used together with a detergent surfactant in a weight ratio of 0.25: 1 to 10: 1. The IDS as a detergency adjuvant is also described in EP 757 094A (Bayer). US 5 318 726 (Henkel) describes detergent compositions containing hydroxyiminodisuccinate (HIDS) as a detergency adjuvant or bleach stabilizer.

IDS and hydroxyiminodisuccinate are also described in documents JP 09 110 813A (Nippon Shokubai) and JP 09 104 897A (Nippon Shokubai).

Document DE 4 311 440A (Henkel) describes zero phosphate detergent compositions containing a system adjuvant comprising zeolite, HIDS and silicate.

GB 474 082 (IG Farbenindustrie) describes the use of aminopolycarboxylic acids, including IDS, in textile treatment processes or washing processes, to delay precipitation of metal salts or to re-dissolve such precipitates

EP 509 382A (W R Grace & Co / Hampshire Chemical Corporation) describes a composition bleaching detergent comprising a bleaching agent and a bleach stabilizer of defined formula that includes IDS. He Use of IDS as a bleach stabilizer is also described in the WO 97 20907A (Procter & Gamble).

Documents JP 09 249 895A (Lion) and JP 09 310 097A (Lion) describe detergent compositions containing 3 at 20% by weight of IDS or HIDS to improve stability or tissue substantivity by fluorescent agents (bleaching agents) optical).

The use of IDS as processing aid for detergent powders and powder detergent components described in JP 09 100 497A (Lion) and JP 09 279 188A (Lion). He JP 07 011294A (Kao) describes detergent compositions high density bulk granules containing acids aminopolycarboxylic acids (for example, IDS or HIDS) to improve the foaming behavior and the ability to cleared up.

WO 98 38276A (Procter & Gamble) describes washing detergent compositions containing the 0.1-50% by weight of a color care agent. Color care agents are amines substituted with, by example, hydroxyalkyl groups. The preferred material is N, N, N ', N'-tetrakis- (2-hydroxypropyl) ethylenediamine.

WO 91 17234A (Procter & Gamble) describes low pH granular washing detergent compositions containing chlorine scavengers that minimize fading of pH sensitive and chlorine sensitive tissue dyes during washed. Preferred chlorine scavengers are ammonium salts, for example, ammonium sulfate.

Definition of the invention

Accordingly, the present invention provides the use of a washing detergent composition that is not of bleaching for the protection of new textile fabrics, white or colored, against color degradation during washing, comprising the surfactant composition, adjuvant and optionally other detergent components that are not bleaching, and that also contains from 0.05 to 1.5% by weight of a compound of formula (I):

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H --- NH ---

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H_{2}(I) AND ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2

in which Y is H or OH and X is H or a cation solubilizer

Another object of the invention is a method for protect new textile fabrics, white or colored, against color degradation during washing, which includes washing hand or machine woven in a wash water that contains the use of a detergent composition as defined above.

Another object of the invention is the use of a non-bleaching washing detergent composition, as defined above, as a chlorine eliminator to avoid discoloration of chlorine sensitive dyes in textile fabrics color during washing.

Detailed description of the invention The compound of formula I

The detergent compositions used in the invention contain, as a fundamental component, a compound of formula I:

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H --- NH ---

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H_{2}(I) AND ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2

in which Y is H or OH, preferably H; and X is H or a solubilizing cation, preferably an ion of sodium.

If Y is a hydrogen atom, the formula I represents iminodisuccinic acid or a salt thereof soluble in Water. Iminodisuccinic acid, also known as acid N- (1,2-carboxyethyl) D, L-aspartic, It has the formula (Ia), in which X = H:

\delm{C}{\delm{\para}{COOX}}

H_{2} ------

\delm{C}{\delm{\para}{COOX}}

H --- NH ---

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H_{2}(Ia)

 \ delm {C} {\ delm {\ para} {COOX}} 

H_ {2} ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2

In the following description, the abbreviation "IDS" will be used to indicate this material, in the form of acid or of salt. IDS is commercially available from Bayer AG, Leverkusen, Germany, and by Nippon Shokubai KK, Japan.

If Y is a hydroxyl group, formula I represents hydroxyiminodisuccinic acid or a water soluble salt of the same.

Hydroxyiminodisuccinic acid has the formula (Ib), in which X = H:

\delm{C}{\delm{\para}{COOX}}

H_{2} ------

\delm{C}{\delm{\para}{COOX}}

H --- NH ---

\delm{C}{\delm{\para}{COOX}}

H ------

\delm{C}{\delm{\para}{COOX}}

H_{2}(Ib) HO ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H_ {2} ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2

In the following description, the abbreviation "HIDS" will be used to indicate this material, in the form of acid or of salt. HIDS is commercially available by Nippon Shokubai KK, Japan.

For the purposes of the present invention, the IDS or HIDS can be, and preferably is, in salt form, that is, X is in formula I a stable solubilizing cation, preferably an alkali metal cation, more preferably sodium.

In the detergent wash compositions of the invention, IDS or HIDS is present in an amount of from 0.05 up to 1.5% by weight, preferably from 0.2 to 1.5% in weight, more preferably from 0.3 to 1.5% by weight and most preferred from 0.5 to 1.0% by weight. It seems that the lower levels provide the greatest benefit and not observe an additional benefit if higher amounts are used, greater than 2.5% by weight.

The preferred material is IDS, being the most preferred in the form of sodium salt.

Detergent compositions

The composition used in the invention also Contains other conventional detergent components, in addition to bleaching components The fundamental components are surfactants (active compounds such as detergents) and adjuvants of detergency, and other components may optionally be presented They are not laundering.

A preferred detergent composition used according to The invention comprises:

(a) from 5 to 60% by weight of one or more detergent surfactants,

(b) from 10 to 80% by weight of one or more detergency adjuvants,

(c) from 0.05 to 1.5% by weight, preferably from 0.2 to 1.5% by weight, more preferably from 0.3 to 1.5% by weight and the most preferred from 0.5 to 1.0% by weight of IDS or HIDS,

(d) optionally other detergent components They are not bleaching up to 100% by weight.

The detergent compositions used in the invention can be in any physical form.

Surfactants (active compounds such as detergents)

The detergent compositions will contain, such as fundamental components, one or more active compounds such as detergents (surfactants), which can be selected from compounds assets such as anionic, cationic, non-ionic, amphoteric detergents and bipolar, soapy or non-soapy, and mixtures thereof. Many active compounds are available as detergent suitable and are described in detail in the literature, for example, in "Surface-Active Agents and Detergents", Volumes I and II, by Schwartz, Perry and Berch.

The active compounds as detergents preferred that can be used are soaps and non-compound synthetic anionic and non-ionic soaps.

Anionic surfactants are well known to experts in the art. Examples include alkylbenzenesulfonates, particularly linear alkylbenzenesulfonates having a length of the C 8 -C 15 alkyl chain; primary and secondary alkyl sulfates, particularly C 8 -C 15 primary alkyl sulfates; alkylene ether sulfates; olefinsulfonates; alkyl xylenesulfonates; dialkyl sulfosuccinates and fatty acid ester sulfonates. Be they generally prefer sodium salts.

Nonionic surfactants that can used include primary and secondary alcohol ethoxylates, especially aliphatic alcohols C_ {8} -C_ {20} ethoxylates with an average of from 1 up to 20 moles of ethylene oxide per mole of alcohol, and more especially primary and secondary aliphatic alcohols C_ {10} -C_ {15} ethoxylates with an average of from 1 to 10 moles of ethylene oxide per mole of alcohol. Nonionic non-ionic surfactants include alkyl polyglycosides, glycerol and polyhydroxyamide monoethers (glucamide).

Cationic surfactants that can be used include quaternary ammonium salts of the general formula R 1 R 2 R 3 R 4 N + X -, in which the R groups are chains long or short hydrocarbons, usually alkyl, hydroxyalkyl or ethoxylated alkyl groups, and X is a solubilizing cation (for example, compounds in which R 1 is a C 8 -C 22 alkyl group, preferably an alkyl group C 8 -C 10 or C 12 -C 14, R 2 is a methyl group and R 3 and R 4, which may be the same or different, are methyl groups or hydroxyethyl); and cationic esters (for example, esters of
hill).

In a cationic surfactant especially preferred of general formula R 1 R 2 R 3 R 4 N + X <->, R1 represents an alkyl group C_ {8} -C_ {10} or C 12 -C 14, R 2 and R 3 represent methyl groups, and R 4 has a hydroxyethyl group.

Surfactants may also be present amphoteric, for example, amine oxides and bipolar surfactants, for example, betaines.

Preferably, the amount of surfactant anionic is in the range of from 5 to 50% by weight of The total composition. More preferably, the amount of anionic surfactant is in the range from 8 to 35% by weight.

The nonionic surfactant, if present, will be preferably used in an amount within the range of from 1 to 20% by weight.

The total amount of surfactant present is preferably within the range of from 5 to 60% in weight.

Detergency adjuvants

The compositions may adequately contain from 10 to 80%, preferably from 15 to 70% by weight of detergency adjuvant.

Preferably, the amount of adjuvant is in the range from 15 to 50% by weight.

Detergent compositions may contain as an adjuvant a crystalline aluminosilicate, preferably a alkali metal aluminosilicate, more preferably a sodium aluminosilicate (zeolite).

The zeolite used as an adjuvant can be the commercially available zeolite A (zeolite 4A), now widely used in washing detergent powders. Alternatively, the zeolite may be maximum aluminum P zeolite (MAP zeolite), such as It was described and claimed in EP 384 070B (Unilever), and which is commercially available as Doucil (registered trademark) A24 from Crosfield Chemicals Ltd, United Kingdom. The zeolite MAP is defined as an alkali metal aluminosilicate of zeolite type P that has a silicon ratio with respect to aluminum that does not exceeds 1.33, preferably within the range of from 0.90 up to 1.33, preferably within the range of from 0.90 to 1.20.

Especially preferred is zeolite MAP, which it has a silicon ratio with respect to aluminum that does not exceed 1.07, more preferably about 1.00. The size of Zeolite particle is not critical. Zeolite A or can be used MAP zeolite of any suitable particle size.

Also preferred, according to the present invention, phosphate adjuvants, especially tripolyphosphate of sodium. This can be used in combination with sodium orthophosphate and / or sodium pyrophosphate.

Other inorganic adjuvants that may be present additionally or alternatively include carbonate of sodium, laminated silicate, amorphous aluminosilicates.

Organic adjuvants that may be present include polycarboxylate polymers, such as acrylic / maleic polyacrylates and copolymers; polyaspartates; monomeric polycarboxylates, such as citrates, gluconates, Oxydisuccinates, mono, di and glycerol trisuccinates, carboxymethyloxysuccinates, carboxymethylximalonates, dipicolinates, hydroxyethyliminodiacetates, alkyl and alkenylmalonates and succinates; and salts of sulfonated fatty acids.

Organic adjuvants can be used in minor amounts as supplements to adjuvants inorganic, such as phosphates and zeolites. Adjuvants Especially preferred complementary organics are citrates, used properly in amounts from 5 to 30% in weight, preferably from 10 to 25% by weight; and polymers acrylics, more especially acrylic / maleic copolymers, used suitably in amounts from 0.5 to 15% by weight, preferably from 1 to 10% by weight.

Adjuvants, both inorganic and organic, preferably in the form of metal salt alkaline, especially sodium salt.

Other components

Detergent compositions can also contain one or more enzymes. Suitable enzymes include the proteases, amylases, cellulases, oxidases, peroxidases and lipases, useful for incorporation into detergent compositions.

Preferred proteolytic enzymes (proteases) they are catalytically active protein materials that degrade or alter types of stain proteins, when present, such as in tissue stains, by a hydrolysis reaction. They can be of any suitable origin, such as plant, animal origin, Bacterial or yeast.

Proteolytic enzymes or proteases of different qualities and origins and that have a activity at various pH ranges of 4-12. They are adequate both high and low point proteases isoelectric

Other enzymes that may be present properly include lipases, amylases and cellulases, including high activity cellulases, such as "Carezyme".

In particulate detergent compositions, frequently use detergency enzymes in the form of granules in amounts from about 0.1 to about 3.0% by weight. However, any form can be used. adequate enzyme physics, in any effective amount.

Agents of anti-redeposition, for example esters and cellulose ethers, by example, sodium carboxymethyl cellulose.

The compositions may also contain dirt removal polymers, for example polymers of Sulfonated and non-sulphonated PET / POETs, both with active sites busy as with unoccupied active sites and copolymers of polyethylene glycol / polyvinyl alcohol graft, such as Sokolan (registered trademark) HP22.

Dirt removal polymers Especially preferred are sulfonated polyesters with active sites not occupied, described and claimed in the WO 95 32997A (Rhodia Chimie).

Other components that may be present include solvents, hydrotropes, fluorescent agents, photo bleachers, foam enhancers or controllers of the foam (antifoaming agents) if applicable, sodium carbonate, sodium bicarbonate, sodium silicate, sodium sulfate, chloride of calcium, other inorganic salts, conditioning compounds of fabrics and perfumes.

Product form

As indicated above, the compositions used in the invention can be in any physical form suitable, for example, particulate (powders, granules, pills), liquids, pastes, gels or bars.

According to an especially preferred embodiment, the Detergent composition is in particulate form.

If needed, the IDS can be incorporated into particulate compositions in the form of granules containing a inert vehicle material.

The powder compositions may be of any apparent density and can be prepared by drying by spray, non-tower granulation, or any combination of these techniques

According to another especially preferred embodiment, The detergent composition is in liquid form.

Liquid detergent compositions may be prepared by adding the fundamental components and optional in any desired order to provide compositions containing the components in the concentrations required

The benefit of color care

The benefit of color associated with Compositions used in the invention is twofold: protection (maintenance) of the color or whiteness of new tissues, and restitution (recovery) of the color or whiteness of the tissues previously washed.

New tissues, when washed with Compositions used in the invention show color degradation reduced, compared to fabrics washed in formulations of control without IDS. The fabrics keep a new look, even after multiple washes. This protection or maintenance benefit It has been found to apply to both white tissues and those of color.

The previously washed fabrics, which have already suffered color degradation, show significant improvements in color fidelity when washed using compositions according to invention. Therefore, color damage that has already taken place can invert and restore the new appearance of the tissues.

It is believed that a reason for color degradation resulting from the washing process can be metal ions heavy, especially iron, but also copper, zinc and manganese: these can originate from water or water pipes, from parts of the washing machine, from the detergent composition used or from the dirt present in the tissue.

Without intending to adhere to any theory, it is believed that the benefit of color care obtained according to the present invention can be attributed to the sequestration of any heavy metal ion present in the wash water by the
IDS.

However, it is not known why the IDS should be especially effective in this regard. In particular, it is surprising that the IDS be significantly more effective than the nitrilotriacetate (NTA), the most common and highly effective detergent as a kidnapper

pH of the composition

According to a preferred embodiment, the composition it has a pH of 0.25% aqueous solution (in demineralized water at 30 ° C) not exceeding 10.5, preferably not exceeding 10.0. He Preferred pH range is from 8.0 to 10.5, more preferably from 8.5 to 10.0.

It has been found that the benefits of care of the color of the invention are especially marked under conditions low pH

The washing process

As previously indicated, an additional object of the invention is a process in which white tissues or Color washes using the composition of the invention. According to one preferred embodiment of the invention, the process is carried out in a wash water that has a pH that does not exceed 10.5, more preferably not exceeding 10.0.

It has been found that the benefits of care of color, protection and recovery are especially marked when the pH of the wash water is low.

Particularly good results are obtained at pH values from 8.0 to 10.5, preferably from 8.5 up to 10.0.

While the invention is also applicable to machine wash, the two previously preferred conditions mentioned (very low pH and low sequestrant level) have special relevance in handwashing when done, by example, in southeast Asia. It is this region, it is a common habit Soaking or rinsing the tissues in water beforehand, without detergent, to remove thicker dirt. In this phase, the Washing water pH can be as low as 6.0 to 7.0. The wet tissues are then submerged in the main wash water (detergent solution). The additional water imported into the water of washing from wet tissues has the double effect of dilute the wash water (and therefore decrease the level of sequestrant) and lower the pH.

Under these conditions, benefits have been observed of especially significant color care, according to the present invention

The benefit of chlorine removal

It has also been found that the incorporation of IDS reduces fading by washing chlorine sensitive dyes. This Fading occurs due to the presence of hypochlorite from sodium, which is usually added to the water supply with hygienic purposes: levels of 0.5 ppm are normal. This produces Fading of the dyes of a wide range of colors. The incorporation of IDS according to the present invention can reduce significantly the amount of fading attributable to chlorine in the wash water.

The benefit of stain removal

A benefit has been unexpectedly observed Additional incorporation of IDS: a significant improvement in the removal of certain highly colored spots, in Particular of red mud. There has also been a better removal of blood and tea stains.

Examples

The invention will now be illustrated in more detail. by means of the following examples, in which the parties and percentages are by weight, unless otherwise indicated. The Examples designated with a number illustrate the invention, while that the examples designated with a letter are comparative.

Example 1

Comparative Examples A to G

Protection of new colored tissues from degradation of color by Cu 2+ ions using sequestrants

In these experiments, the effect was demonstrated IDS protector on cotton fabrics dyed with Direct Red 80 against color degradation in the presence of copper ions and compared with other kidnappers.

The kidnappers used were the following:

IDS:

tetrasodium salt of iminodisuccinate, of Bayer

NTA:

trisodium nitrilotriacetate salt, of Aldrich

EDTMP:

calcium salt of ethylenediamine tetramethylene phosphonate, (Dequest (brand registered) 2047, from Monsanto)

EDDS:

tetrasodium salt of ethylenediamine disuccinate (Octaquest (registered trademark) E30, from Associated Octel)

STP:

sodium tripolyphosphate (technical grade Polyphos, from Thai Polyphosphate and Chemicals)

Magnesium silicate: Macrosorb (brand registered) MS33, from Crosfield Chemicals, United Kingdom.

The tissues were washed in demineralized water containing copper ions (0.5 ppm Cu2 + CuCl2) at a water ratio with respect to 200: 1 clothes, in tergotometers (cleaning degree meters) for 30 minutes at 30ºC at 90 rpm

The experiments were performed at two values of different pH, 9.5 and 6.5, the pH adjustment was made by sodium hydroxide addition (the addition of copper salt caused a slight drop in pH).

At each pH, the experiments were performed at two different levels of sequestrant:

(i) a sequestrant level of 0.00286 g / l, calculated as equivalent to the concentration in the final rinse when a detergent composition containing 0.5% is used in kidnapper weight; Y

(ii) a sequestrant level of 0.00572 g / l, calculated as equivalent to the concentration in the final rinse when a detergent composition containing 1.0% is used in kidnapper weight

The series of control that did not contain sequestrant, and that did not contain nor ions Copper or kidnapper. In these experiments I was not present No detergent component.

Color changes were controlled as differences in reflectances at 620 nm. Here are at stake two different effects: dye fading, which leads to a Increase in reflectance generally small, and darkening of the dye (color degradation), which results from the presence of copper ions, which lead to a decrease in quite greater reflectance. Neither effect is desired and both result in deterioration of tissue appearance. By way of ideal, the observed reflectance difference should be close to zero or a small increase (not exceeding 3 units and preferably not more than 2 units).

The results were shown in the table of a continuation.

one

It is observed that only the IDS gave differences reflectance within the range of 0 to +3, in all terms. EDTMP performed well at pH 9.5, but not at pH 6.5. With NTA Fading prevailed. This also happened with EDDS in the Most conditions. Inorganic kidnappers, the sodium tripolyphosphate and magnesium silicate only had a insignificantly small protective effect against darkening.

Example 2

Comparative Examples H a P

Protection of new white tissues from discoloration by mixed heavy metal ions

The procedure of Example 1 was repeated at pH 6.5 using white cotton fabrics and a "mixture" of ions Heavy metal:

Cu 2+ 0.5 ppm Fe 3+ 2.5 ppm Mn 2+ 2.0 ppm Zn 2+ 5.0 ppm

For white tissues, the discoloration by means of reflectance changes at 450 nm. For the white tissues cannot be considered fading and here the ideal is a result as close as possible to zero.

3

Example 3

Comparative example Q

Protection of new white silk tissues from degradation of color by mixed heavy metal ions, using sequestrants in powder detergent compositions

A powder detergent formulation was prepared by spray drying and dosing techniques Conventional post for the following formulation:

5

       \ newpage
    

Comparative example Q: no kidnapper Example 3: plus 1.25% by weight of IDS

The tissues were washed five times in a water of wash comprising water of 20/6 ° FH of (Ca / Mg), which contained a "mixture" of heavy metal ions and 2.5 g / liter of the detergent composition, and with the pH adjusted to 9.5 using acid diluted sulfuric acid The washings were performed in tergotometers at a water ratio with respect to 200: 1 clothes, for 30 minutes at 30ºC and 90 rpm. After each wash, two rinses were performed at one water ratio with respect to 200: 1 clothes and the fabrics dried lying

The "mixtures" of heavy metal ions They were the following:

Washed Cleared up Cu 2+ 0.5 ppm 0.05 ppm Fe 3+ 2.5 ppm 0.1 ppm Mn 2+ 2.0 ppm 2.0 ppm Zn 2+ 5.0 ppm 1.1 ppm

The results (ΔR at 450 nm) were the following:

6

Tissue yellowing reduction washed with the composition of example 3 was visually apparent.

Example 4

 Comparative Examples R and S

New white silk protection from color degradation by mixed heavy metal ions, using sequestrants in powder detergent compositions

The procedure of Example 3 was repeated using the same powder formulation, but the pH was adjusted to the lower value of 8.5 and a total of 10 washes were performed for example. The reflectances were measured after 5 and 10
washed

The sequestrants used were IDS (invention) and NTA (comparative), at a level of 1.25% by weight.

7

Example 5

Comparative example T

Protection of new colored tissues from degradation of color by mixed heavy metal ions (2.5 ppm Fe3 + and 0.5 ppm Cu2 +), using sequestrants in compositions powder detergents

A multilayered experiment was performed using panel members and hand wash conditions. The benefit of color care using indicators colored.

A powder detergent composition was prepared by spray drying and dosing techniques Conventional posterior to give the following composition:

       \ vskip1.000000 \ baselineskip
    

8

       \ vskip1.000000 \ baselineskip
    

Comparative example T: no kidnapper Example 5: IDS at 0.625% of the formulation.

A total of 12 wash cycles were performed, using the following conditions:

- Trace levels of iron (2.5 ppm) and copper (0.5 ppm)

- Product dose: 5 g / l (for formulation from later)

- Water hardness: 10ºFH of Ca

- Reason for water with respect to clothes in the wash Main: from 6 to 1

- Reason for water with respect to clothes in the cleared: from 20 to 1

- Number of rinses: 2

- Rub time: 30 seconds per piece.

- Washing temperature: 30ºC.

- Total weight of the wash load: 1 kg.

The colored indicators dried tending to the shadow.

The benefits of color care are determined both instrumentally (reflectance, ΔE) and by visual evaluation.

Instrumental measurements

The change in reflectance ΔE was measured, indicative of the total color change, across the entire spectrum visible. The result is all the better the smaller the figure.

9

Visual evaluation by panel members

The visual evaluation was carried out by members of the Experienced panel, using the universal gray scale [standards ISO 105-A02: 1993, BS EN 20105-A02: 1995, BS 1006-A02: 1990, Society of Dyers and Colourists Standard Methods 5th Edition A02]:

5 = no color change of fabric color original

1 = large color change of the original fabric

Therefore, the higher the score of visual evaluation, more closely resembles the tissue that is tested at new fabric (not washed).

10

Examples 6 to 16 do not fall within the scope claimed.

Example 6

Comparative Examples U a X

Restitution / recovery of colored tissues whose color has been damaged by exposure to copper ions

These experiments demonstrate the benefits of IDS in the restitution of colored fabrics in which your color.

The fabrics used were cotton dyed with Direct Red 80. They were previously treated with demineralized water that it contained 0.5 ppm of Cu 2+ ions and that had the pH adjusted to 6.5 by means of sodium hydroxide. The pretreatment was performed using tergotometers at 30 ° C, 90 rpm and a ratio of water to to 200: 1 clothes, then the tissues dried dried.

The tissues were then washed in a water of wash containing 2.5 g / l of the detergent composition used in the Example 3, and 0.5 ppm of Cu 2+, in water of a French hardness of 20/6 Ca / Mg: the pH was adjusted from 9.9 to 9.5 using acid diluted sulfuric acid The washings were performed in tergotometers at 30ºC, 90 rpm and at a water ratio with respect to 200: 1 clothes. The washings were followed by two rinses in water of a French hardness of 20/6 Ca / Mg containing 0.05 ppm Cu2 + at a rate of water with respect to 200: 1 clothes and the tissues dried after lying

The kidnappers, if present, will they dosed directly to the wash water in the amounts indicated in the table below (percentages based on detergent composition).

The procedure was also repeated using 15 minute hand washes (using a strictly protocol controlled), at a water ratio with respect to 25: 1 and 7: 1 clothing, instead of washing in tergotometers at 200: 1.

Color changes were evaluated by changes in reflectance at 620 nm, measuring the pattern before tissue pretreatment All values were negative, ideally being the smallest possible negative value.

The results are shown in the table of a continuation.

eleven

Similar results were obtained in a repetition experiment in which the tissues did not dry out between the washes

Examples 7 and 8

Comparative Examples Y and Z

The procedure of Example 6 was repeated at a Water ratio with respect to 200: 1 clothes, using both IDS and HIDS and gave similar results:

12

Example 9

Comparative examples AA a DD

Restitution / recovery of colored tissues whose color has been damaged by exposure to mixed heavy metal ions

The procedure of example 6 was repeated, using the "mixture" of mixed heavy metal ions (different for washing and rinsing) used in example 3, instead of ions Copper alone. For the pretreatment stage the same was used "mix" than for washing.

Similar results were obtained to those of Example 6, as shown in the table below.

13

Examples 10 A 16

Restitution / recovery of colored tissues whose color has been damaged by exposure to copper ions, using a range of broader formulations

The procedure of example 6 was repeated, using Six different formulations of variable pH. The method was used of the tergotometer of the previous examples. For each formulation, the initial pH was adjusted slightly down, using acid diluted sulfuric acid, to mimic the effect of dirt on the pH of washed.

The wash and rinse cycle was like the described in example 6 and the color changes were evaluated as reflectance changes (ΔR) at 620 nm.

The following tables show the formulations and reflectance results.

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Formulations

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* Enzyme 1: protease (Purafect 2100G) * Enzyme 2: protease (Savinase 12T) * Enzyme 3: protease / lipase / amylase (60/15/15): Savinase / Lipolase / Termamyl * Enzyme 4: protease / lipase (80/20): Savinase / Lipolase * Enzyme 5: Cellulase: Clazinase 7000G All specific enzymes are trademarks. ** polyacrylate or copolymer of acrylate / maleate

Reflectance Results

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Example 17

Comparative example EE

Chlorine fading prevention using sequestrants in powder detergent formulations (chlorine scavengers)

A multilayered experiment was performed using the detergent composition of example 3 without sequestrant (example comparative EE) or containing 1% by weight of IDS (example 17). Be determined the benefit of color care using a range of Colored cotton indicators.

The washing conditions were the following:

- Trace levels of metal ions:

Fe = 2.5 ppm, Cu = 0.5 ppm, Zn = 5 ppm, Mn = 2 ppm

- Trace level of NaOCl: 0.5 ppm

- Product dose: 2.5 g / l (formulation of more ahead)

- Water hardness (washing and rinsing): 26º FH of AC

- Reason for water with respect to clothes in the wash and cleared: 200 to 1

- Washing time: 20 minutes

- Number of rinses: 2

- Agitation: 75 rpm

- Washing temperature: 40ºC.

The washed tissues were dried lying on the shadow.

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Reflectance Results

The result is much better the smaller Be the figure.

17

Examples 18-19 do not fall within of the claimed scope.

Example 18

Comparative examples FF and GG

Removal of tissue stains using sequestrants in the powder detergent formulations

Stain removal was evaluated using a Hand wash methodology and the following detergent formulation powdered:

18

Comparative example FF: no kidnapper Comparative example GG: 1% by weight of NTA Example 18: 1% by weight of IDS

The washing conditions were the following:

- Trace levels of metal ions: Fe = 0.1 ppm, Cu = 0.01 ppm, Zn = 0.1 ppm, Mn = 0.2 ppm

- Product dose: 2 g / l

- Hardness of water:

-

Wash: 45ºFH (Ca: Mg 3: 1)

-

Rinse: 25ºFH (Ca: Mg 3: 1)

- Reason for water with respect to soaking clothes and washing: 7 to 1

- Reason for water with respect to clothes in the cleared: 3 to 1

- Soak time: 20 minutes

- Number of rinses: 2

- Rub time: 30 seconds per piece

- Washing temperature: 22ºC

- Total load weight: approximately 700 g.

The washed tissues were dried lying on the shadow.

The reflectance results (ΔE) were as follows. These represent the residual stain and therefore The smaller the figure, the better the results. The red mud results were significant at 95%, while that directional improvements in blood and tea were observed.

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Example 19

Comparative example H H

Removal of tissue stains using sequestrants in the powder detergent formulations (methodology of tergotometer)

Stain removal was also evaluated using the tergotometer method and the example formulation 3.

The comparative example HH did not contain sequestrant, while example 3 contained 1% by weight of IDS.

Washing conditions:

- Trace levels of metal ions:

Fe = 2.5 ppm, Cu = 0.5 ppm, Zn = 5 ppm, Mn = 2 ppm

- Product dose: 2.5 g / l

- Water hardness (washing and rinsing): 26ºFH of AC

- Reason for water with respect to clothes in the wash and the rinse: 200 to 1

- Washing time: 20 minutes

- Number of rinses: 2

- Agitation: 75 rpm

- Washing temperature: 40ºC

The washed tissues were dried lying on the shadow.

The results of stain removal are show below. These are a measure of the stain eliminated, therefore, the larger the figure, the better the Outcome. The improvement here was significant from the point of view Statistically and visually apparent.

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Examples 20 a 22

Concentrated detergent compositions (high bulk density) containing IDS

Powder detergent formulations were prepared formed by phosphate and formed by high density zeolite apparent (850-900 g / l) containing IDS to give The following formulations:

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* Enzyme 6: protease / lipase (72/28): Savinase / Lipolase * Enzyme 7: protease / cellulase (50/50): Purafect 2100G / Clazinase 7000G

Examples 23 and 24

Liquid detergent compositions containing IDS

Liquid detergent compositions were prepared to give the following formulations:

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Examples 25

Liquid detergent composition containing IDS

A liquid detergent composition was prepared which It contained a lower level of IDS to give the following formulation. The IDS was incorporated in liquid form (30% active).

2. 3

24

Claims (9)

1. Use of a washing detergent composition which is not bleach comprising surfactant, adjuvant and optionally other detergent components that are not bleach and which also contains from 0.05 to 1.5% by weight of a compound of the formula (I): (I) AND ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2 in which Y is H or OH and X is H or a solubilizing cation to protect new white textile fabrics or of color versus color degradation during washed. 2. Use of a detergent composition according to claim 1, characterized in that it comprises: (a) from 5 to 60% by weight of one or more detergent surfactants, (b) from 10 to 80% by weight of one or more detergency adjuvants, (c) from 0.05 to 1.5% by weight of a compound of formula I, (d) optionally other detergent components They are not bleaching up to 100% by weight. 3. Use of a detergent composition according to claim 1 or claim 2, characterized in that it comprises from 0.2 to 1.5% by weight of the compound of formula I. 4. Use of a detergent composition according to any of the preceding claims, characterized in that the compound of formula I is iminodisuccinic acid or a salt, preferably the sodium salt thereof. 5. Use of a detergent composition according to any of the preceding claims, characterized in that it has a pH of the 0.25% aqueous solution (in demineralized water at 30 ° C) that does not exceed 10.5, preferably not exceeding 10.0, more preferably it does not exceed 9.5. 6. Use of a detergent composition according to any of the preceding claims, characterized in that it is in particulate form. 7. Use of a detergent composition according to any one of claims 1 to 5, characterized in that it is in liquid form. 8. Method to protect white or new tissues color versus color degradation during washing, which includes washing the tissues by hand or machine in a wash water which contains the use of a detergent composition according to a any of claims 1 to 7. 9. Use of a washing detergent composition which is not bleach comprising surfactant, adjuvant and optionally other detergent components that are not bleach and which also contains from 0.05 to 1.5% by weight of a compound of formula (I): (I) AND ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H --- NH ---

 \ delm {C} {\ delm {\ para} {COOX}} 

H ------

 \ delm {C} {\ delm {\ para} {COOX}} 

H2 in which Y is H or OH and X is H or a solubilizing cation, such as a chlorine scavenger to prevent discoloration of chlorine sensitive dyes in textile fabrics color during washed.