Additive to the cleaning tool, the way of obtaining and detergent with its application

 

(57) Abstract:

The invention relates to the additive, which is used in detergents. This additive is in the form of agglomerate contains at least nabuhay layered silicate and at least an optical Brightener in close contact with each other, and optical bleach, at least partially located between layers of the layered silicate, and the resulting agglomerate has a density backfill over 700 g/l Describes the method of obtaining the above-mentioned additives and detergent, which it contains. The technical result - the above additive has good mechanical stability and effectively decomposes in water, and it contains optical Brightener evenly distributed and protected from oxidation. 3 S. and 8 C.p. f-crystals, 2 tab.

The invention relates to an additive to the cleaning means on the basis of nabukenya layered silicates.

Patent applications DD-20325, 220326, 20327 and 220328 known auxiliary detergents to enhance the degree of whiteness. They contain optical brighteners and nenabunena layered silicates, for example, natural mineral magadii.

Next, from the patent application DE-a-35 26 405 of the optical brighteners.

Since the mid 80-ies in the development of detergents tends to increase bulk density. The motive for this is the possibility of excess savings, which increases the amount of fillers and packaging material saving. Another advantage you should see that you need a small volume for transportation and trade. The consumer has the advantage that the packaging of detergents occupy less space in the shopping basket.

A significant step in the development of highly concentrated detergents with high bulk weight is the abolition of the fillers or the so-called regulatory tools, such as sodium sulfate.

Patent application Germany DE-C-3424987 describes the manufacture of detergent concentrates with high bulk weight, which do not contain any sodium sulfate as a regulatory tool. By drying by spraying receive basic powder, which contains the usual contained in detergents substances such as, for example, surfactants, carboxymethylcellulose (CMC), sodium polyphosphate, zeolite A, liquid glass, optical brighteners, etc. Received primary powder with a nonionic surface-active agent and mixed in dry form with the obtained separately granules with high bulk weight. This product is an optical Brightener in an unprotected form of contact with other components of the detergent, in particular, is subjected to oxidation as a result of the contact.

Further, a significant shortage of highly concentrated detergents with high bulk weight is that parts of detergent may come into contact with each other at high individual concentrations without dilution regulatory tool. This did not happen when detergents with low bulk weight, which contained up to 25% of sodium sulfate. In concentrates detergent active components of the detergent are present in high concentrations, tightly Packed next to each other. In the worst case the components of detergents can react with each other during the hydrolysis or oxidation, which can lead to the deterioration of the functions of content substances and detergent.

The problem is the introduction of optical brighteners in concentrates detergents with high bulk weight. Upon receipt of detergents with low bulk weight optical Brightener or recycled in loose product, or in powder form is also contained in the detergent otbelivajushaja substances, as, for example, perborate sodium, in particular percarbonate sodium, not by resulting in the manufacture of coatings (Coating) or not due to the presence of dilution, spatially separated and adsorbing water regulating means, the optical brighteners can oxidize. Used when the potential of the bleaching, thus, not available for subsequent bleaching effects in the washing solution. Above all, however, the oxidation product of the optical Brightener may have yellow staining, making detergent, on the one hand, shows a yellow tinge, and on the other hand, the yellow oxidation product of bleach itself absorbed washable fabric, which reduces the aesthetic aspect, especially in white linen.

Pre-oxidation optical Brightener appearance of active oxygen in the washing powder is caused by the reaction contained in the detergent powder bleach, especially if the bleach contains percarbonate. In the presence of tetraacetylethylenediamine (TAED) occurs peracetic acid, which is released active oxygen. This issue is described in stitch with a low density backfill, which contain sodium sulfate, the problem would not be so acute, as released in the reaction water can be associated with sodium sulfate through education crystallized water. The problem is, however, especially when detergents with high bulk weight. Therefore there is a need for optical brighteners, in particular, telenovela type to protect against reactions from occurring in the washing powder active oxygen.

Another part of the formulation of detergent concentrates problem is that the agglomerates with a high bulk weight fast enough dissolved in the washing liquor and again detected in the supernatant of the washing liquor". Because there are no sufficiently large mechanical loads on the agglomerate, they dissolve only partially, allowing active ingredients partly taken out from the washing steps.

The detergent agglomerates high-density Sands have in General a low dispersibility; it can be improved by adding a dispersant and explosive substances, which in contact with water swell and explode or loosen the agglomerates, which leads to increased solubility and the use of risovannyh tablets detergent can find the use of natural, swelling in water smectites.

The presence of destructive detergent agglomerates explosives is also necessary in order to avoid the so-called "bleached spots. "Bleached spots" occur due to prolonged contact time is not dissolved, containing bleach agglomerate with linen. Due to the direct contact of an optical Brightener having in some places, ultra-high concentration, it is transferred to the site of contact on a locally limited portion of the undesirable tissue in high concentrations. This can be seen especially in the presence of ultraviolet light to form a light spot and degrades the aesthetic aspect. The detergent agglomerates should therefore contain explosive means so they explode in contact with the wash liquor, making optical bleach homogeneous dissolved in a solution of lye and prevents direct contact of the detergent agglomerates with the washed material.

If you have a production installation for the manufacture of detergents receive several (types of) detergents of different formulations, problems arise when the same installation Ishii funds in installations in which first produced containing bleach detergent, dirty remnants of the optical Brightener. In fact even when a thorough pre-cleaning installation cannot completely eliminate the pollution.

Therefore, there is a need in addition to a cleaning tool in which the components of the bleach in the appropriate manner, with the exception of contact with important parts of the production plant for the manufacture of detergents, it is possible to mix the detergent, affecting the function of the optical Brightener.

The basis of the invention is to develop an additive for a detergent in the form of agglomerates (pellets), which contains at least one nabuhay layered silicate and optical bleach, which is in good mechanical stability good decomposes in water and in which the optical Brightener is in a homogeneous distribution, and protected from oxidation contained in the detergent-oxidants.

The subject of the invention is an additive in the form of an agglomerate, which is characterized by the fact that it contains at least nabuhay layered silicate and at least an optical bleach the East silicate he during storage of washing solution securely protected from oxidative processes and the application of detergent excluded "bleached spots on linen. Consider that the optical Brightener, at least partially located between layers of the layered silicate, as the existing first discrete particles of bleach sufficiently disappeared in addition to the cleaning tool, and particles of layered silicates appear in the fluorescence microscope homogeneous dyed with bleach.

Preferably the weight ratio nabuhay(s) layered(s) silicate(s): optical(s) bleach(and) is about 200-7:1, in particular 100-10:1.

Preferably nabuhay layered silicate is a natural or clay mineral. Nauheim clay mineral is preferably montmorillonite, beidellite, saponite or hectorite.

Montmorillonite can be used in the sodium or calcium form or in the form subjected to ion exchange with soda calcium montmorillonite. You can also use made by the synthesis of clay minerals of the above groups. The layered silicate is preferably used in an amount of from 90 to 99 wt.%.

Nabukenya layered silicates possess the property when intracrystalline swelling distribute polar agents between platinocyanide optical bleach is a derivative of stilbene. However, you can also use derivatives benzoxazole, coumarin and pyrazoline. These products have in common anionic group of the dye, why was a surprise that they are located between the negatively charged layers nabukelevu layered silicate.

Suitable optical brighteners are, for example,

< / BR>
(a) Cyanursaurechlorid-Diaminostilben (CCDAS) (chloride anhydride zinurova acid-diaminostilbene), where R can have the following values:

< / BR>
Type: tetralin (trade name Tinopal TAS-X company Ciba-Geigy)

< / BR>
Type: dimorpholino (trade name Tinopal DMS-X N. Sec.)

< / BR>
Type: Aminostilbene (trade name Tinopal 5 BMS-X)

< / BR>
Trade name Tinopal CBS-X

< / BR>
Trade name Tinopal BLS-X.

As the agglomerates of the natural layered silicates and optical brighteners can be beige, gray or yellow, agglomeratie additive particles to the cleaning means preferably covered with a synthetic zeolite or layered sodium silicate (preferably about 3-15 wt.%), improving the degree of whiteness of the agglomerate. Other preferred alternatives for laminating own coloring agglomerates are tinted the blau B-E (commercial product of the firm Ciba-Geigy) (preferably about 0.01-0.5 wt.%), or in additive colored (biologically) active substances (preferably about 0.3 to 5 wt. %), for example, in voetbalvrouwen tool Tinolux BB 5 (a commercial product of the firm Ciba-Geigy).

The agglomerate is preferably a density backfill over 700 g/l and due to this high density backfill compatible with highly concentrated detergents with high density.

The subject invention is further a method of obtaining the above-described additives to the cleaning tool in the form of agglomerates, which is characterized by the fact that the optical additive (optical additives) are added to the layered silicate (layered silicate) in the form of an aqueous suspension.

Layered silicate (layered silicates) can be mixed, for example, in a powerful mixer, for example, in the mixer of Ariha. Then optical (s) bleach(I) (preferably in the form of an aqueous dispersion) with stirring, sprinkle with the education component of the powder. This forms an agglomerate, which is sieved and to improve the degree of whiteness is subjected to the surface treatment by filing a zeolite in powder form.

The resulting agglomerate may well dispergirujutsja in the water. The optical Brightener is protected from the high water nabukelevu layered silicate there is no "bleached spots. The agglomerate can be further added to the resulting detergent not containing bleach production installation so as not to contaminate the system with bleach.

The subject invention is further detergent containing the above additive to the cleaning tool along with the usual ingredients, such as anionic and nonionic surfactants, builders (Builder), polymers (co-drivers, co-Builder), inhibitors against the formation of gray tint (Pomerania), bleaches and bleach activators, enzymes, inhibitors against foaming, fragrances and/or dyes.

The preferred methods are explained below.

To the powder of a layered silicate being added under vigorous stirring optical Brightener or a mixture of optical brighteners in the form of an aqueous dispersion (slurry).

If the optical Brightener is added in the form of an aqueous dispersion, the mixture aglomerated with a water content of about 20-30 wt.% relative to the entire mixture. After a time, mixing for about 2-5 minutes get the sinter, which is being dried in the dryer with a fluidized bed is in the main machine to the size of the particles is about 0.2-2.5 mm, preferably 0,5-1,7 mm Fraction < 0.2 mm again sent for agglomeration. The obtained coarse crushed using a roll crusher and again served on the screening installation.

Sifted sinter send in a drum mixer (for example, in a drum mixer company Talkig) or on a plate for granulation. Then add about 3-15 wt.%, preferably 5-10 wt.% synthetic zeolite in fine form. The average particle size of this powder should be preferably < 20 μm, in particular, about 3-10 microns. When mixed sinter powder powder is deposited on the outer surface of the agglomerate. As used powders have a coefficient of white > 90% (R 456, Eirepho), painted around bleach in yellow color the surface of the agglomerate occurs white coating, so that the resulting agglomerate is white and cannot be distinguished from the color of the detergent.

Received as described additive to the cleaning tool has the following additional advantages.

The density of the backfill is more than 700 g/l, so that it is compatible with detergents high density backfill. Due to the swelling action contained in the"bleached out spots on linen. Optical Brightener in detergent fully used. Sinter mechanically stable. The agglomerate can be added to the detergent in addition, thanks to that important part of the production unit for production of detergents are not contaminated optical brighteners.

The invention is illustrated by the following examples.

Example 1

Received a Supplement to the cleaning tool in accordance with the following recipe:

And: Bentonite (Laundrosil DGA, Sud-Chemie AG) 98 wt.%

B: Optical Brightener (Tinopal DMS-X h.c.) 2 wt.%

In high-performance mixer of Ariha, type R02 was founded in 1960 Laudrosil DGA powder. Then, under vigorous stirring was added 74,4 g Tinopal DMS 36, which is a suspension of solid forms of optical Brightener Tinopal DMS-X N. With. with active substance 36% (respectively 40 g of Tinopal DMS-X h C (or 2 wt.%)), after addition of 450 g of water. Received light grey sinter, which was dried in a drying Cabinet to a residual moisture content of 10 wt.%. Then sieved fraction of grain from 0.4 to 1.4 mm

5 wt. % additive to the cleaning tool was mixed into it does not contain bleach the subject cleaning tool. When the ratio in the washing SEL is entrusted bleached cotton fabric for 1 minute After rinsing, drying and Ironing spotting assessed visually as follows:

in daylight very well;

when ultraviolet light is very good.

10 wt. % additive to the cleaning tool is mixed to the subject cleaning tool ECE, which contained 7% perborate monohydrate Na and 3% TAED.

As a comparison, an equivalent amount of bleach, 0.2 wt.% Tinopal DMS-X h.c. introduced in identical detergent in the form of suspension already in the manufacture of sprayed product.

Both samples of detergent were open kept in a climatic Cabinet for 8 weeks at 30oC and 70% relative humidity.

From the obtained using HPLC-analysis of the content of bleach has calculated its loss in %. The results are presented in table 1.

The decrease due to oxidative destruction with the use of additives to the cleaning tool according to example 1 is clearly smaller compared to the detergent of the same total composition, in which the bleach is contained in the sprayed product.

Example 2

Received a Supplement to the cleaning tool in accordance with the following recipe:

And: Bentonite (Laundrosil DGA, Sud-Che, the ri selected the following sample:

1980 Laundrosil DGA powder

60 g of Tinopal CBS in suspension

(respectively 20 g of Tinopal CBS-X)

440 g of water

Then 90 parts by weight of sieved to a size of 0.4-1.4 mm light beige agglomerate was mixed with 10 weight. parts of zeolite and stirred in the plate for granulation. This sinter was coated on the surface of the zeolite powder, which was obtained a white agglomerate.

Additive to the cleaning tool as described in example 1 was subjected to test spotting on pre-bleached cotton fabric. The assessment was the following:

in daylight very well;

when ultraviolet light is acceptable.

10 wt.% additives to the cleaning tool is mixed to the procedure described in example 1, the subject cleaning tool. In the comparative sample was injected with 0.1% Tinopal CBS-X in suspension in the spray product.

Then were tested for storage stability as in example 1. The results are shown in table 2.

When applying an additive to the cleaning means the destruction of bleach less than in the detergent of the same total weight of the composition, wherein the bleach contained in the spray is th layered silicate, which is a natural or nabuhay clay mineral and at least an optical bleach, characterized in that it contains nabuhay layered silicate and at least an optical Brightener in close contact with each other, and optical bleach, at least partially located between layers of the layered silicate and the agglomerate has a density backfill over 700 g/liter

2. Additive to the cleaning tool under item 1, characterized in that the weight ratio nabuhay(e) layered(e) silicate(s): optical(e) bleach(and) is about 200-7:1, preferably about 100-10:1.

3. Additive to the cleaning tool under item 1, characterized in that nabuhay mineral clay is a montmorillonite, beidellite, saponite or hectorite.

4. Additive to the cleaning tool according to one of paragraphs.1 to 3, characterized in that the optical Brightener is a derivative of stilbene.

5. Additive to the cleaning tool according to one of paragraphs.1 to 4, characterized in that the particles agglomerate covered with synthetic zeolite or layered silicate of sodium.

6. Additive to the cleaning tool according to one of paragraphs.1 to 4, characterized in that the particles agglomerate p is on one of the PP.1 - 4, characterized in that, along with Nauheim layered silicate and optical bleach it contains active substance, preferably voetbalvrouwen tool.

8. The method of obtaining an additive to the cleaning tool in the form of agglomerate in one of the paragraphs.1 to 7, characterized in that the layered(th) silicate(am) optical add(s) bleach(and) in the form of an aqueous suspension.

9. The method according to p. 8, characterized in that they form agglomerates with a particle size of about 0.2 to 2.5 mm and a residual water content of 2 to 15 wt.%.

10. The method according to p. 8, characterized in that the resulting agglomerate (a) cover about 3-15 wt.% synthetic zeolite or layered silicate, (b) tint about 0.01-0.5 wt.% dye, in particular pigmented dye, or (C) is treated with about 0.3-5 wt.% tinted active substances, preferably fotoatelier tools.

11. Detergent-containing additive according to one of paragraphs.1 - 7 obtained in one of the paragraphs.8 - 10, along with the usual ingredients of detergents.

 

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