DE1080722B - Storage-stable, self-acting detergent concentrate - Google Patents

Description

Shelf-life, automatic detergent concentrate - It has been around since For many years it was common to use powdered automatic detergents made from soaps or synthetic detergents Laundry raw materials, condensed phosphates and hydrogen peroxide adducts, in particular Sodium perborate to build up. Carboxymethyl cellulose, stabilizers, fiber protection agents, optical brighteners and fillers are self-acting in such powdery Laundry detergents are usually contained in smaller quantities.

For reasons of easier dosing, because of the saving of Packaging material and also because of the usability of such synthetic detergent raw materials, which cannot, or only with difficulty, be converted into powder form is that Experts interested in storage-stable, automatic detergent concentrates in pasty or liquid form. The pasty or liquid texture in the case of preparations of this type can often already be achieved by the in these state forms accumulating active detergent base material can be achieved, but one uses in addition also of water or organic solvents to achieve the desired final state reach.

It is very difficult to have shelf-stable, self-acting detergent concentrates from the known washing raw materials and hydrogen peroxide or its adducts, such as Carbamide peroxide, sodium perborate, sodium perpyrophosphate or the like. To win, there most capillary-active compounds especially in the presence of the usual inorganic ones Basic detergents promote the decomposition of hydrogen peroxide or its adducts and so the production of storage-stable, automatic detergent concentrates in paste-like form or liquid form impossible.

It has now been found that when using capillary-active alkylene oxide adducts it in the presence of condensed phosphates with substantial proportions of higher molecular weight Polyphosphates with more than 4 phosphorus atoms in the molecule succeed in producing hydrogen peroxide or to stabilize or store its adducts over longer periods of time to make and so the extraction of pasty or liquid concentrates for washing, bleaching and to enable cleaning purposes in the household, trade and industry.

Of course, when choosing the raw materials, care must be taken to ensure that they are as free as possible from harmful catalysts such as iron or copper compounds. The use of stabilizers such as magnesium compounds (magnesium sulfate, magnesium silicates), alkali salts of organic polycarboxylic acids, proteins or protein degradation products, carboxylic acid or sulfonic acid protein condensates or the like is possible, but not absolutely necessary. Example 1 50 parts by weight of a 90% adduct Ethylene oxide to a coconut fatty alcohol (registered trademark Kyolox C) are mixed in a mixer with 36.5 parts by weight of water and 10 parts by weight of a commercially available condensed phosphate, which in addition to sodium pyrophosphate and sodium tripolyphosphate also contains at least 250 /, higher molecular weight polyphosphates with more than 4 phosphorus atoms in the molecule , processed into a homogeneous paste. The pH is adjusted to 6 to 6.2 by adding a little 75% phosphoric acid. Then 3.5 parts by weight of a technical 30% hydrogen peroxide are slowly incorporated into the product, a white, pasty end product being formed. This product is easy to dose and can be used in many ways as a washing, bleaching and cleaning agent. The product can be stored for a long time in polyethylene packaging.

After 1 month the active oxygen content is still 99.6% des Initial value.

Instead of the mentioned ethylene oxide adduct to higher molecular weight fatty alcohols Other adducts of ethylene or propylene or mixtures of these alkylenes can also be used of fatty alcohols, fatty acids, higher molecular weight amines, amides, alkylphenols or the like. Find use. Also other non-ionic compounds with capillary-active properties such as, for example, alkylated or acylated polyalcohols or their oxalkylation products are applicable.

In place of the hydrogen peroxide, those already mentioned can be used Adducts or persalts can be used in whole or in part.

Example 2 In a homogenizer, 18 parts by weight of an oxethylated Nonylphenol with 8 parts by weight calc. Tetrasodium pyrophosphate, 12 parts by weight Sodium tripolyphosphate and 1 part by weight of the sodium salt of Cellulose glycolic acid with 61 parts by weight of water to form a thick detergent concentrate processed. Then 8 parts by weight of sodium perborate and 2 parts by weight incorporated colloidal magnesium metasilicate, whereupon the pH is adjusted to 7.5 will.

The stabilizers and fiber protection agents also mentioned, carboxymethyl cellulose, optical brighteners and finally also bactericidal or bacteriostatic effects Additives can be incorporated, of course on their compatibility to pay attention to the per connection. The pasty or, if desired, liquid final state of the concentrate can be achieved through the selection of non-ionic washing raw materials as well be regulated by the addition of solvents, preferably water. The phosphates can also be used, for example, in the form of viscous salts nitrogenous bases. So is the triethanolamine salt of a polymetaphosphoric acid suitable.

The pH of the pasty or liquid concentrates is advantageous set between 5 and 8. Those for practical needs and shelf life the most favorable pH values are between 6 and 6; 5.

It is known per se and should not be claimed here that one strongly diluted hydrogen peroxide solutions intended directly for bleaching purposes by condensed phosphates such as pyrophosphates, tripolyphosphate or even higher molecular ones Can stabilize poly- or metaphosphates for the duration of the bleaching process. Further it is known that washing and bleaching processes can be carried out in the presence of condensed phosphates with hydrogen peroxide or with persalts in dilute, ready-to-use aqueous solutions Can perform solutions. This method is also not claimed. The possibility for the production of storable pasty or liquid concentrates is off cannot be derived from the previously known literature.

Claims (2)

PATENT CLAIMS: 1. Storage-stable, automatic detergent concentrate in pasty or liquid form, consisting of a mixture of non-ionic, capillary-active products, especially alkylene oxide adducts, hydrogen peroxide or its adducts and mixtures of condensed phosphates in substantial proportions of higher molecular weight polyphosphates with more than 4 phosphorus atoms in the molecule. 2. Storage-stable, automatic detergent concentrate according to claim 1, characterized by adjusting the pH to between 5 and 8, preferably between 6.0 and 6.5.