DD220328A1 - WASHING AIDS FOR WHITE GRADE AMPLIFICATION - Google Patents

Abstract

The present invention relates to a whitening agent for textile reinforcement for textile fabrics. IT CONSISTS OF A MIXTURE OF LAYERILEILICATE, ALUMOSILICATE, WHITE STONE AND, WHERE APPROPRIATE, PARFUEM AND STRETCHING AGENT. THE DETERGENT IS USED IN WASHING PROCEDURES IN THE HOUSEHOLD AND INDUSTRIAL WASHING PROCESSES. THE WASHBOARD WILL BE PLACED IN WASHING OR FOLLOWING SPOOLING.

Description

Title of the invention

Washing aids for whiteness enhancement

Field of application of the invention

The present invention relates to a laundry aid for improving the whiteness of textile fabrics. The laundry aid is used in domestic and industrial laundry washing processes.

Characteristic of the known technical solutions

Detergents are used in the washing process with different target functions (softening, whiteness improvement, color refreshment, softening of the textile material, odor improvement). So it is well known that soda to soften the water and to soften the dirt

As a pre-wash in the past played a dominant role ·% t of the development of all-round detergents was initially paid no attention to the development and use of detergents. But it was soon recognized that these detergents do not meet all requirements and are economically ineffective. The poor effectiveness results from the complex action of the various components of a detergent, all of which require certain optimal conditions for full effectiveness.

The amounts of polyphosphates aluminosilicate contained in the detergent or, as proposed in an earlier, unpublished application, water insoluble layer

Silicates, whiteners and perfume are oversized for use in the washing process, so that a large part does not come into effect and is therefore wasted economically ·

15s are therefore various auxiliary detergents which are added to the washing process during the actual washing process or in a preceding or downstream washing process in order to set optimal conditions for the effectiveness of the compounds contained in the detergent and optimal ratios Y / irkstoffe to textiles. The latter is particularly necessary if a certain effect of the detergent, for example, the whiteness enhancement, is to be achieved. The degree of whiteness results from the cumulative effect of whitening agent and bleaching agent (H. Bloching in: "Detergent Chemistry", Hüthig-Verlag Heidelberg 1976). The bleaching agents are predominantly sodium perborate. For the full effectiveness of the bleaching agent, especially at low temperatures, an activator is required, which causes the decomposition of Perborates. These activators, z. B, Tetraacetalglykoluril, are technically produced only in a multi-stage process, which limits the economic application of these compounds. Previously known detergents are predominantly water-softening agents based on phosphates or phosphate substitutes, bleaching agents based on peroxygen- or chlorine-chloride-terminated compounds or pure aftertreatment agents based on optical whiteners and cationic surfactants. The use of phosphates is as environmentally unfriendly as the use of various phosphate substitutes (eg nitriloacetic acid). The use of peroxygen-based laundry aids leads to an excessive chemical oxidation process which leads to damage to the laundry. Kationics require complicated technical manufacturing processes.

Object of the invention

The aim of the invention is the preparation of a washing aid which increases the whiteness of the textile material in the washing process.

Explanation of the essence of the invention

The object of the invention is to optimize the bleaching and whitening effect of detergents by formulating the washing assistant with a suitable substance system.

According to the invention, the washing aid consists of 50 to 99.4 % of a water-insoluble polysilicate hydrated layer structure having the general formula Me ₂ O.y SiO ₂ .H ₂ O, where Me is an alkali ion or proton, y is a number from 4 to 48 and ζ is a Number of 5 to 25, 0.5 to 4.8 % of an aluminosilicate of the general formula χ Me ₂ O. Al ₂ Oo · y SiO ₂ in the dehydrated state, in which χ is a number from 0.7 to 2.5, y is a number from 1.7 to 3 and Me is predominantly an alkali metal ion, 0.1 to 50 % of a triacinylaminostilbene series whitening agent the formula

Sv ' H CH = * W I C C -

^J d

wherein R ^ and H ^ are preferably aniline and / or morpholine and M is a cation of the alkali metal series or a primary, secondary or tertiary aliphatic amine, and optionally 0.1 to 20 % perfume and 0.1 to 30 % extender.

The polysilicate hydrates serve to bind the hardness ions, to homogeneously distribute the whitener and to enhance the effect of the whitener; the aluminosilicates, in conjunction with the peroxygen compounds, contribute to the bleaching action of a detergent and synergistically enhance the effects of the phyllosilicate. The cumulative effect of the whitener, phyllosilicate, aluminosilicate and peroxygen compound of a detergent improves the whiteness of the fabric.

    .... '. |. '. - ·. ..; '

The polysilicate hydrates used according to the invention are water-insoluble layer silicates which occur in nature and can be prepared synthetically. Known compounds are magadiite NAGO · 14 SiO ₂ 9 HgO and its proton form that can be prepared by ion exchange of the Na form · In the aluminosilicates is amorphous, partially crystalline or crystalline compounds of the general formula ΙίβρΟ · χ SiO "· aigo ^ in the anhydrous state, as they are used for binding the hardness ions of the water in detergents and are well known, preferably zeolite A.

It is advantageous to use water-insoluble polysilicates and aluminosilicates with a maximum in the particle size distribution below 10 μm.

In addition to the derivatives of stilbene mentioned, derivatives of pyrazoline, bisbenzoxazole, coumarin and quinolone can be used as whiteners.

The extenders used may be substances known to the person skilled in the art. Anhydrous sodium sulfate is particularly suitable in a known manner.

The composition of the auxiliary auxiliaries can be kept very variable within the specified limits and adapted to the intended use. Thus, in order to improve the whiteness, the washing assistant contains 90 % layering agent as an additive to a washing process with a peroxygen-containing

silicate, 3.8 % aluminosilicate, 0.1 % whitener and 6.1 $ S sodium sulfate.

As post-treatment agent it consists of 85 % silicate, 3.5 % aluminosilicate, 1.5% perfume and 0.5 % whitener and 9.5 % sodium sulfate.

The preparation of the washing aid can be done by mixing the ingredients in known mixing equipment. The use concentrations are 3 to 5 g of the washing aid for 1 1 wash in conjunction with a peroxygen-containing detergent in the washing process. In the rinse, 1 to 3 g / l wash are sufficient.

Ausführunffsbeispiele example 1

Washing aid for the main wash in the washing machine with a detergent containing peroxygen. It is made by mixing

60 g of magadiite in the Na form with the formula Na ₂ O.fwdarw.14 SiO ₂ .9 HoO and a maximum in the particle size distribution of 3.5 .mu.m

2.5 g of zeolite A,.-.-.

0.1 g of a whitener according to formula I, R ₁ »aniline, R ₂ morpholine,

M = sodium. ,. 36.4 g of anhydrous sodium sulfate prepared in a centrifugal mixer.

%

Example 2

Washer for laundry after-treatment in the rinse cycle of the washing machine

It is prepared by mixing 85 g of sodium magadiite with the formula Na ₂ O. 14 SiO «· 9 Η« 0 and a maximum in the particle size distribution of

3.5 g of zeolite X with the formula in the dehydrated state Na ₂ O. Al ₂ O ^ _# 2.5 SiO ₂ and a maximum in the grain

, ... '... - β - ^:

size distribution at 2.5 / 0.5 g of white toner according to Example 1 1.5 g of perfume 9 »5 g of sodium sulfate prepared in a rotary mixer. >

Example 3

Auxiliary washing additive as an additive to a Y / ash process with a peroxygen-containing detergent. Bs is made by mixing

90 g of sodium magadiite with a maximum in the particle size distribution of 6 / um

4 g of zeolite A, particle size maximum at 4 / 0.1 g of white toe according to Example 1

5.9 g of sodium sulfate prepared in a centrifugal mixer.

Claims (4)

Invention saiisp rüc he Whitening reinforcement for textile fabrics, ^v characterized in that it comprises from 50 to 99.4 % of a water-insoluble polysilicate hydrate having a layer structure with the general formula MegO.y SiO ₂ . ζ HgQ, where Me is an alkali ion or proton, y is a number from 4 to; 48 and ζ is a number from 5 to 25, 0.5 to 4 »8 % of an aluminosilicate of the general formula χ Me ₂ O, AlpOo · y SiO« in the dehydrated state, in which χ is a number from 0.7 to 2.5 , y is a number from 1.7 to 3, and Me is predominantly an alkali metal ion, 0.1 to 50 % of a triacylaminostilbene series whitening product having the formula 11 ^J £ Preferably, R and Rg are aniline and / or morpholine and M is an alkali metal series cation or a primary, secondary or tertiary aliphatic amine and optionally 0.1 to 20 % perfume and 0.1 to 30 % extender , 2. washing aids according to point 1., characterized in that the polysilicate hydrate is magadiite. · -. - 3. washing aid according to item 1 ·, characterized in that the aluminosilicate is of the zeolite A type. 4 · Auxiliary wash according to item 1 «, to 3., characterized in that magadiite and zeolite A are used with a maximum in the particle size distribution <10 / um.