DE2422691A1 - STABLE BLEACHING AGENTS - Google Patents

Description

Unaere No. 19 288 Pr / br

The Procter & Gamble Company Cincinnati j Ohio, V.St.A.

Stable bleach

The invention relates to bleaching agents with exceptional Hunting resistance. Such bleaches include a combination of certain peroxy acids, a mixture of stabilizers for the peroxy acids from essentially certain proportions of magnesium sulphate and certain alkali metal sulphates and a certain one Amount of bound water of hydration.

Peroxygen bleaches in general, and peracid compounds in particular, have long been found to be effective Bleach is known for the cases in which one has the color-

409849/1009

2422591

and wants to avoid the tissue damaging effects of active halogen-containing bleaches. The use of peroxyacid compounds however, in commercial bleaching agents poses several problems. Liquid bleach that Peroxyacid compounds containing the active bleaching agent tend to have their bleaching effect on prolonged storage Peroxyacid granules also tend to lose Bleach products tend to lose their bleaching effect during storage if no precautions are taken to reduce this effect to a minimum. In addition, solid peroxyacids are generally relatively unstable to thermal and physical stress, which causes these substances to decompose quickly can.

Efforts have been made to produce granulated peroxyacid bleaches against thermal decomposition and decomposition by impact as well as loss of the available oxygen content to stabilize during storage. In general, efforts have been to have a hydratable inorganic salt used in admixture with the peroxyacid bleach compound. Provide such hydratable salts represents a vehicle for water of hydration which is believed to provide peroxyacids against thermal decomposition and decomposition be stabilized by impact.

The use of hydratable salts to make peroxygen bleach to stabilize, is for example in US-PSS 3 * J94 786, 3,622,366 and 3,639,285, in the CA-PS 588 005 and in BE-PS 56O 389 described. In these Pamphlets are said to be very effective binders for water of hydration, such as sodium tripolyphosphate and magnesium sulfate, can be used to make the appropriate

409849/1009

To hold the amount of water of hydration mixed with peroxyacid bleaching agents. The presence of such certain stabilizing agents however, at least in large amounts, it is not particularly desirable.

Recent studies have shown that the phosphate class of Fabric treatment additives can pose environmental problems because the phosphate salts act as nutrients Capabilities that accelerate the growth of algae, thereby reducing the biological aging (eutrophication,) of natural waters is accelerated. As a result of the possible harmful effects of constant use of phosphates in In substantial quantities, it is desirable to eliminate the need for such materials in commercial laundry products reduce or switch off.

Magnesium salts (i.e. magnesium sulphate), on the other hand, represent " provide a source of magnesium ions introduced into bleach and / or wash solutions when using such magnesium salts can be used as bleach stabilizers. The use of large amounts of magnesium sulfate thus has the effect of artificial Introduce water hardness in the form of magnesium ions into washing solutions. A see increased hardness is undesirable insofar as the washing effect on textiles is reduced as a result.

Hydratable alkali metal sulfates can be used as bleaching agents (against temperature and Impact decomposition), however, these alkali metal sulfates, when hydrated to the extent necessary, tend to in order to achieve an effective bleach stabilization, in addition to easily releasing the water of hydration again. This submitted free water tends to use up the available oxygen

409849/1009

-H-

2A22691

to reduce the content of the peroxygen bleaching agent chemically and thus raises the problem of the "loss of bleaching effect during storage.

In summary, it can be said that the methods used to date to achieve more effective, storage-stable, ecologically compatible bleaching agents that are compatible with other washing auxiliaries in aqueous solutions, were not fully satisfactory.

The object of the invention was therefore to provide peroxyacid bleaching agents which are effective in chemical removal of stains from fabrics and textiles that are storage-resistant to thermal and shock loads as well as against loss of the existing oxygen content, without phosphate stabilizers or large amounts of Having to use stabilizing salts that introduce undesirable water hardness into washing solutions.

Surprisingly, it has now been found that if you have a very specific mixture of relatively small amounts of magnesium sulphate and certain alkali metal sulphates with certain Peroxyacid bleaches combined so that a certain substantial amount of water of hydration is effective within such compositions is bound, bleaching agents can be manufactured which meet these conditions described above and unexpectedly superior to similar bleaching agents previously known.

The bleaching agents according to the invention are granules and are phosphate-free. They contain about 1 to 40 wt. a normally solid _f water-soluble peroxyacid compound, about 5 to HO % by weight? a Stabilisierungsmittelgemxschs and about 5 to 40 wt -.% water of hydration. The stabilizing agent mixture is a binary combination consisting essentially of 1) magnesium sulfate and 2) an alkali metal sulfate, which can be sodium sulfate or potassium sulfate. The weight loss

409849/10 09

ratio of magnesium sulfate to alkali metal sulfate on a dry basis fluctuates between about 60: 1 and 6: 1. Within the total agent, the weight ratio of magnesium sulfate is to peroxyacid compound about 1.5: 1 or less.

The phosphate-free, granulated peroxygen bleaching agents according to the invention are particularly resistant to the loss of the peroxygen bleaching effect on prolonged storage times. In addition, such agents do not require excessive amounts of stabilizers, which introduce undesirable alkaline earth metals into the wash water and thus increase the hardness of the wash water. The agents according to the invention contain a peroxyacid compound, a stabilizing agent mixture and water of hydration. Below are the
individual components as well as optionally to be used substances, formulations of the agent and their application are described in detail.

Peroxyacid compound

About 1 to about 40 wt .- / lbs, preferably about 25 to 40 wt .- # of the agents according to the invention. usually consist of one solid water-soluble peroxyacid compound. A joint is "normally solid" when at room temperature is in dry or solid form. Such peroxyacid compounds are the organic peroxy acids and their water-soluble salts, which in aqueous solution a Compound that contain a -0-0 residue. These substances have the general formula -

It

HO-O-C-R-Y

40984 9/1009

wherein R is an alkylene radical with 1 to about 16 carbon atoms or an arylene radical with about 6 to 8 carbon atoms and Y is a hydrogen or halogen atom or an alkyl or aryl radical or any radical which is in aqueous solution provides an anionic radical. Such Y radicals can, for example

0x0 0

if tr It

-C-OM, -C-O-OM or -S-OM

where M is a hydrogen atom or a water soluble salt forming cation. Those which can be used according to the invention Organic peroxy acids or their salts can contain 1 or 2 peroxy groups and can either be aliphatic or be aromatic. When the organic peroxyacid is aliphatic, the unsubstituted acid has the general formula

Il

HO-OC- (CH ₀ ) Y <L η

where Y is for example CH 1, CH Cl, 0 0 0

Il It Il

-C-OM, -S-OM or -C-O-OM

Il

and η can be an integer from 1 to 12. Perazelaic acids (n = 7) are the preferred compounds of this type. The alkylene radical and / or Y (if it is an alkyl) can contain a halogen atom or other non-interfering substituents. Examples of preferred aliphatic peroxyacids are dxperazelaxic acid and dxperadipxic acid.

409849/1009

2422S91

When the organic peroxy acid is aromatic, the unsubstituted acid has the following general formula

Il

where Y is, for example, a hydrogen or calogen atom

or an alkyl radical or the radicals

0 0 0

• ι ti II

-C-OM, -S-OM or -C-O-O-M

It

means. The percarboxy and Y groups can be in any position relative to one another around the aromatic ring. The ring and / or Y group (if it is an alkyl radical) can have any non-interfering substituent, such as, for example Halogen. Examples of suitable aromatic peroxy acids and their salts are monoperoxyphthalic acid, Diperoxyterephthalic acid, 4-chlorodiperoxyphthalic acid, the monosodium salt of diperoxyterephthalic acid, m-chloroperoxybenzoic acid, p-nitroperoxybenzoic acid and Diperoxyisophthalic acid.

Of all of the organic peroxyacid compounds described above the most preferred compounds according to the invention are diperisophthalic acid and diperazelaic acid.

409849/1009

Stabilizer mixture

About 5 b ^ jls about 45 wt ?, preferably about 25 to kO wt -.% (On dry basis) of the present compositions consist essentially of a binary stabilizer mixture containing two types of stabilization salts.

As will be described in detail below, such are used Salt mixtures as carriers for water of hydration, which is a third essential component of the agents. It it was surprisingly found that a certain combination of stabilizers is surprisingly good for Handling and chemical bonding of such water of hydration is suitable.

The first element of the binary stabilizer mixture of the invention is magnesium sulfate. Magnesium sulfate is of course a well-known hydratable salt that is widely used as a stabilizing agent found for peroxyacids. If it's in relation to the present peroxyacid is used in sufficient amounts, can provide excellent stabilization of the peroxyacid compound be achieved. However, as noted above, such large amounts do this Magnesium salt undesirable magnesium hardness ions in washing and / or bleaching solutions, this magnesium hardness unfavorable acts on the fabric washing effect. Magnesium sulfate is a readily available common inorganic one Chemical.

409849/1009

-9- 2422591

The second essential component of the binary stabilizer Igemiseh of the invention consists of an alkali metal sulfate, such as a sodium sulfate or potassium sulfate. Just like magnesium sulfate, such alkali metal sulfates are light available known substances.

Although the alkali metal cations of these sulfate salts do not adversely affect fabric washing and / or bleaching performance (not to the extent that magnesium does) these salts act as stabilizers for peroxyacid compounds not as effective as magnesium sulfate. It has surprisingly been found, however, that when using a small amount of such an alkali metal sulfate in combination with magnesium sulfate the amount of magnesium sulfate in commercial granulated peroxyacid bleach products can be substantially reduced with substantially no loss of peroxyacid stabilizing effect. Sodium sulfate is the preferred alkali metal sulfate for this purpose.

It has been found that when magnesium sulfate and any of the above-described alkali metal sulfates or their Mixtures in a weight ratio on a dry basis of about 60: 1 to 6: 1, preferably about 30: 1 to 10:!, are present, highly effective peroxyacid stabilization with a significantly lower amount of magnesium sulphate than has been used previously for held possible, can be achieved. If such a binary stabilizer mixture is used, the weight ratio can be of magnesium sulfate to peroxyacid compound can be 1.5: 1 or less while maintaining such a ratio will. Such small amounts of magnesium sulfate relative to the amount of bleaching agent allow one Formulation of bleach products to be used in laundry

409849/1009

medium solution does not introduce enough artificial hardness to adversely affect the washing of the fabrics.

Water of hydration

About 5 to about 5 % by weight, preferably about 25 to 40% by weight? the bleaching agents according to the invention consist of water of hydration. The hydrate is chemically bound to the salts described above, which represent the binary mixture of stabilizers.

Without committing to any particular theory, you take suggest that water of hydration is used to stabilize peroxyacid bleaching agents serves against thermal and impact decomposition. Without the presence of water of hydration, peroxyacid would be Bleach has a tendency to explode. Using magnesium sulfate and the above described alkali metal sulfates in very specific proportions, the required amount to the effective Binding of water of hydration to stabilize peroxyacid bleaching agents can be achieved without the use of undesirable Phosphate compounds or large amounts of magnesium sulfate and without generating undesirable amounts of free Water, which causes the loss of the available oxygen content of the peroxyacid during storage.

Optional substances to be used

The stable phosphate-free granulated bleaching agents of the present invention can be used as bleaching agents for fabrics as such and textiles are used, but it is more common to use such agents as an element of an overall bleach or laundry detergent. Therefore, common bleaching and / or detergent additives stabilize the inventive

409349/1009

ized base bleaches can be added.

If agents are desired which are only intended as bleaching agents, the agents according to the invention can be added added optional substances means for adjusting the pH value, agents that delay the solubility of the bleaching compound, such as coating agents for bleach granules, bleach activators and mixtures of these three types of materials. Minor ingredients, Viie dyes and perfumes, can also be present.

Typical means for adjusting the pH are used in order to keep the aqueous solutions of the agents according to the invention at a pH of 7 to 10 in the case of the peroxyacid bleaching agent are generally most suitable. Depending on the nature of the other ingredients that may be used the means for adjusting the pH can be either acidic or basic. Examples of acidic agents for Adjustment of the pK value, which is intended to compensate for the presence of other highly alkaline substances, are usually solid organic and inorganic acids, acid mixtures and acid salts. Examples of such acidic Means for adjusting the pH value are citric acid, glycolic acid, tartaric acid, maleic acid, gluconic acid, boric acid, Glutamic acid, sulfamic acid, sodium bisulfate, potassium bisulfate, Ammonium bisulfate and mixtures of citric acid and Lauric acid. Citric acid is most preferred because of its low toxicity and its ability to complex hardness to tie.

409849/1009

_ ₁₂ _ 2422631

The alkaline agents for adjusting the pH include the usual alkaline buffering agents. Examples for such buffering agents are salts such as carbonates, bicarbonates, silicates and their mixtures. Sodium bicarbonate will most preferred.

The coating agents, which are optionally used for encapsulating the bleach granules according to the invention to delay whose water solubility can be used includes a wide variety of fatty acids, fatty alcohols, fatty esters, Polyvinyl alcohol, hydratable salts, water conditioning agents ^ Waxert and their mixtures.

Among the known possibly usable peroxyacid bleach activators include heavy metal salts of transition metals combined with chelating agents, such as picolinic acid, Methylaminodiacetic acid or hydroxyethylaminodiacetic acid, chloroacetylphenol, chloroacetylsalxcylic acid, Triacetyl cyanurate, sodium p-acetoxybenzenesulfonate, benzoylimidazole and certain aldehydes and ketones. The use of such substances as bleach activators is detailed in U.S. Patents 3,130,165, 3,156,654, 3,211,658 and 3 671 439 and in BE-PS 787 276.

A particularly preferred bleach product incorporating the stabilized three component peroxyacid bleaches of the present invention used in combination with other specific bleaching auxiliaries are those in the patent application (our No. 19 289) described means.

In these products described in this application, coated peroxysaureblexchgranulates in combination with an agglomerated alkaline agent to adjust the

09849/1009

" ¹³ " 2A22691

pH value is used. In the bleaches described in this invention, the stabilized bleach system can be used in the coated bleach granules the specific combination of peroxy acid, stabilizer mixture and Water of hydration of the present invention.

If such be selectively used to use components in combination with the three essential components of the erfindungsgeriäßen agent to form a total bleach product, they make up about 1 to about 80 wt.% Of the total agent from.

The bleaching agents according to the invention can also be added to customary fabric washing agents and some of them will. Accordingly, standard detergent additives, such as surface-active substances and builders, belong. The surfactants can be organic, anionic, nonionic, ampholytic and zwitterionic surfactants and mixtures thereof Act. It must be surface-active substances that do not have a disruptive effect, i.e. those that interact with the Bleach do not undergo chemical reaction. Builders that may be used include all of them Common organic / and inorganic / 7 framework salts including Carbonates, silicates, acetates, polycarboxylates and phosphates. (If phosphate-free agents are required, Phosphate builders should of course be omitted. The certain ^ stabilized in a favorable manner However, bleaching agents still work even when mixed with phosphate compounds.) If the present stabilized bleach as part of a common

-A 0-984 9 / 1-00 9

Fabric detergents are used, the present bleach systems generally contain from about 1 to about 20 wt. such common detergent. The usual surfactants and builders include% - Conversely, the instant bleaching may be able to about 80 to about 95 wt..

Manufacture of the remedy

The bleaching agents according to the invention can be prepared in any conventional manner, such as by mixing the ingredients by agglomeration, by compacting or by granulating. In a preferred method of making the present compositions, a peroxyacid / water mixture containing from about 35 to about 50 % water is added in the correct proportions with the stabilizing agent (either in anhydrous or hydrated form, but in the correct proportions Proportions on an anhydrous basis) and the optional components to be used in the bleach granules themselves. Such a combination of ingredients is then carefully mixed and then passed through an extruder. The extrudate in the form of noodles is then fed into a spheronizer (also known under the trade name Marumerizer), with approximately spherical particles being formed from the peroxyacid-containing noodles. The bleach granules can be dried in the spheronizer to the appropriate water content. After exiting the spheronizer, the particles are sieved to achieve a uniform particle size.

409849/1009

The bleach granules produced in this way can then be mixed with other granules of bleaching agents or detergents that can be used optionally. The actual Particle size of both the bleach-containing granules and those possibly to be used Additives is not critical. However, if means are to be obtained with economically acceptable flow properties, given granule size limits are highly preferred. In general, the invention Granules preferably have a size of about 100 to 3,000 η, particularly preferably about 100 to 1,300 u ..

The flowability is also improved if the particles according to the invention have approximately the same particle size exhibit. Thus, the range of the average particle size of the bleach-containing granules and the Optionally addable granulates of other materials between 0.5: 1 and 2.0: 1.

The bleaching agents according to the invention are used by they are dissolved in water in an amount sufficient to keep about 1.0 ppm to 100 ppm of available oxygen in the solution to deliver. This generally requires about 0.01 to 0.2 wt. of the agent in solution. Tissues to be bleached are then brought into contact with such aqueous bleach solutions.

The following examples serve to further illustrate the invention.

09849/1009

example 1

It became a stable, phosphate-iced, granulated bleach made of the following composition:

Ingredients by weight?

Diperisophthalic acid 33.1 %

Stabilizer mixture

(on an anhydrous basis) 36.1 %

Magnesium sulfate / weight ratio
Sodium Sulphate j ^ SO ^ / NaSC ^ =

Water of hydration 30.1 %

100.0 %

In the agent described above, the weight ratio of magnesium sugar to diperisophthalic acid bleaching agent is about 1: 1.

The agent described above has excellent fabric bleaching properties when in aqueous solution in at a concentration sufficient to provide about 10 ppm of available oxygen. The mean is resistant to decomposition of bleaching substances caused by thermal and shock loads, as is generally the case during the transport, storage and sale of a commercial detergent product appear. The agent also exhibits acceptable resistance for commercial products to the loss of available ones 02 ~ salary during transport, storage and of the sale ',

409849/1009

Essentially the same bleaching effect and stability of the agent are obtained when, in the average of Example 1, the diperisophthalic acid is expressed by an equivalent amount ( as available Op) diperazelaic acid, diperadipic acid, Monoperoxyisophthalic acid, monosodium salt of diperoxyterephthalic acid, prnitroperoxybenzoic acid, 4-chlorodiperoxyphthalic acid or m-chloroperoxybenzoic acid is replaced.

Essentially the same bleaching effect and stability of the agent are achieved if in the agent of Example 1 the sodium sulfate component of the stabilizer mixture is replaced by an equivalent amount of potassium sulfate.

Example 2

A granulated, stable bleaching agent with the following composition was produced:

Ingredient wt -.%

Diperisophthalic acid MgSO, / Na ₉ S (K 29.2 % Weight ratio 31.8 % Stabilization mxttelgemxsch 12.25: 1 Magnesium sulfate 9 y Sodium sulfate J. 27.2 % Water of hydration 2.5 % Isophthalic acid 9.3 % citric acid

100.0 %

In the average described above, the weight ratio of magnesium sulfate to diperisophthalic acid bleach

0-9 849/1009

medium about 1; 1. The granulated particles of the agent des Example 2 had an average particle size of 1,100 ji.

The agent described above has excellent fabric bleaching properties when dissolved in aqueous solution at a concentration sufficient to provide about 10 ppm of available oxygen. The agent is resistant to the decomposition of the bleaching substances, which are caused by thermal and shock loads, such as those generally occur during the transport, storage and sale of a commercial detergent product. The composition also shows an acceptable resistance for a commercial product to the loss of available _{O 2} content during transport, storage and sales conditions.

Essentially the same bleaching effect and stability of the agent are achieved if, in the average of the example, the diperisophthalic acid is replaced by an equivalent amount (expressed as available O ₃ ) of diperazelaic acid, diperadipic acid, monoperoxyisophthalic acid, monosodium salt of diperoxyterephthalic acid, p-nitroperoxybenzoic acid or p-nitroperoxybenzoic acid, 4-chloroic acid, Chloroperoxybenzoic acid is replaced.

Substantially the same bleaching effect and stability of the agent are achieved when using the agent of the example the sodium sulfate component of the stabilizer is replaced by an equivalent amount of potassium sulfate.

Substantially the same bleaching effect and stability of the agent are achieved when using the agent of the example the isophthalic and / or citric acid by equivalent amounts of glycolic acid, tartaric acid, maleic acid, gluconic acid, Boric acid, glutamic acid, sulfamic acid, sodium bisulfate,

'4 09849/1009

Potassium bisulfate, ammonium bisulfate or mixtures of citric acid and lauric acid can be replaced.

Substantially the same bleaching effect and stability of the agent are achieved when the bleaching agent granules of Example 2 evenly with about 25 wt .- # myristyl alcohol be coated.

Substantially the same bleaching effect and stability of the agent are achieved when the granules of the example 2 are mixed with sodium bicarbonate granules as a means for adjusting the pH value so that the sodium bicarbonate 70% by weight of the total agent.

Substantially the same bleaching effect and stability of the composition are obtained when the agent of Example 2 is also about 1 wt -.% Of di-2-pyridyl ketone, p-Nitro "acetophenone or triacetylbenzene includes as the bleach activator.

Fabric washing effect and essentially the same bleaching / color destroying effect and product stability are achieved if the agent of Example 2 is additionally about 90 % by weight? contains synthetic detergent granules which consist essentially of linear alkylbenzenesulfonate with an average of 11.8 carbon atoms in the alkyl group and sodium sulfate filler.

Fabric washing power and essentially the same bleaching / color destroying effect and product stability are achieved if the composition of Example 2 additionally contains about 90% by weight of synthetic detergent granules which are im

409849/1009

essentially from a surface-active system from one linear alkylbenzenesulfonate with an average of 11.8 carbon atoms in the alkyl group and a mixture of alkyl ether sulfates with about 10 to 18 carbon atoms in the alkyl group and 2 to 6 moles of ethylene oxide, a builder mixture that Contains sodium silicate and sodium carbonate, and a sodium sulfate filler exist.

Example 3

A stable bleach was made as follows:

Ingredient% by weight

Diperisophthalic acid 33.3 %

Stabilizer mixture 33.3 %

Magnesium sulfate / weight ratio

, SO, sodium sulfate

Water of hydration

/ Wt

Γ MgSO ₁ ./Na,

J 13.5? 1 ^pounds

100.0 %

In the average of Example 3, the weight ratio of magnesium sulfate to diperisophthalic acid was about 0.93: 1.

The above-described bleaching agent of the present invention was subjected to a storage stability test described below used.

Storage stability text test

The unique storage stability of the bleaching agent according to the invention is achieved with the aid of a storage stability

409849/1009

tests illustrated. Two bleaching agents - the agent of Example 3 as described above and the same Means in which the stabilizing agent consists entirely of magnesium sulfate instead of a magnesium sulphate / sodium sulphate device - were compared. Each agent was placed in an open tray under the temperature conditions given in Table I. did. After one week, the percentage loss of available oxygen for each agent was determined calculated. Negative values represent a loss of bleaching effect, positive values represent an actual one Increase in available oxygen content as calculated. (An increase in the available oxygen content takes place, when some of the water is expelled from the test agent during storage, thereby reducing the actual amount on present means is reduced.) The results are shown in Table I.

09849/1009

Table I.

Bleach tormentor loss of available op

Room temperature

26.7 ⁰ C

Means of example 3 »in which Na ₂ SO _{4 has been} replaced by MgSO ₂ -8

-7

Means of example

+9

CD O (O

The storage stability test described above illustrates the ability of the agents according to the invention to retain available oxygen more effectively than the same agents that only use magnesium sulfate as a stabilizing agent contain.

40 9 849/1009

Claims (9)

Patent claims: 1. Stable, phosphate-free, granulated bleach containing A) about 1 to about 40 wt. a normally firm, water-soluble peroxyacid compound, . B) about 5 to 45 weight -% of a Stabilisierungsmittelgemisehs consisting essentially of:. i) magnesium sulfate and ii) an alkali metal sulfate such as sodium sulfate or Potassium sulfate, the weight ratio of magnesium sulfate to alkali metal sulfate being about 60: 1 to 6: 1 to anhydrous Base is, and C) about 5 to 45 wt. Water of hydration the weight ratio of magnesium sulfate to peroxy acid compound being 1.5: 1 or less. 2. The bleach of claim 1, wherein: A) the peroxy acid compound is about 25 to 40% by weight? of Means B) the stabilizer mixture about 25 to 40 wt. of the means and C) the water of hydration about 25 to 40 wt. of the remedy . 3. Composition according to claim 2, wherein A) the peroxy acid compound diperisophthalic acid or Is diperazelaic acid, 09849/1009 242269Ί B) the alkali metal sulfate is sodium sulfate and C) the weight ratio of magnesium sulfate to sodium sulfate is about 30: 1 to 10: 1. 4. Agent according to claim 3, wherein the granules of the agent have a particle size of about 100 to 3,000 microns. 5. The composition of claim I _3, characterized in that it additionally contains about 1 to about 80 wt -.% Containing an agent for adjusting the pH, coating agents, bleach activators and mixtures thereof. 6. Composition according to claim 5, wherein the additional substance is a mixture of an agent for adjusting an acidic pH value and a means for adjusting an alkaline pH value is. 7. Agent according to claim 5, wherein the agent for adjusting an acidic pH value is citric acid, glycolic acid, tartaric acid, Maleic acid, gluconic acid, boric acid, glutamic acid, sulfamic acid, sodium bisulfate, potassium bisulfate, ammonium bisulfate or mixtures of citric acid and lauric acid. 8. Agent according to claim 5 _3, wherein the agent for adjusting an alkaline pH value is sodium bicarbonate. 9. Detergent containing bleach, containing A) about 5 to about 20 wt. of a bleach Claim 3 and 9849/1009 B) about 80 to 95% by weight of an anionic, nonionic, ampholytic or zwitterionic surfactant, an organic or inorganic alkaline Builder salts and their equipment. For: The Procter & Gamble Company-Cincinnati, Ohio, V.St.A. Dr. H. Beil Lawyer 409849 / 10Π9 Qy