DE1284555B - Textile cleaning agents - Google Patents

Description

A wide variety of mixtures have hitherto become known as textile cleaning agents. In particular, textile cleaning agents have become known which enable the textiles to be cleaned to remain in place during cleaning. Such textile cleaning agents are mainly required for cleaning carpets, blankets, upholstery, tapestries and other fabric coverings for floors, walls and pieces of furniture and are mostly used as shampoons, ie as foaming cleaning agents. Such foaming detergents are z. B. are known based on soap, but have the disadvantage that the cleaning capacity is inadequate in many cases. Foaming detergents are also known, which are based on synthetic detergents and produce a considerably better cleaning effect. So is z. B. the use of a mixture of sodium or potassium salts of Fettalkoholsuifaten, Fettalkoholäthersulfaten, of Fettäur- ao kondensationsproduktcn with acidic salt-forming groups od. However, these known textile cleaning agents have the disadvantage that they leave behind a tough, sticky layer on the textile fibers when they dry, which means that the textiles are re-soiled much more quickly. It is also known to use an aqueous solution of sodium coconut sarfate, which, however, has the disadvantage. that it crystallizes out of aqueous solutions even in low concentrations at temperatures below about 15 ° C. To increase the water solubility of the sodium coconut oil sulfate, one has, for example, active substances such as nitrogen-containing compounds or inactive substances such as methyl alcohol added without satisfactory results could be achieved.

The invention is based on the object of specifying a fabric cleaning agent that is characterized by a high refinement ability, without being involved to change the surface of the cleaned textiles disadvantageously, in particular without being caused by the treatment such a laundry detergent promotes re-soiling.

The invention relates to the use of an aqueous solution of a mixture of at least two Lithium salting from aikylsulfaien of saturated fatty alcohols with 10 to 14 carbon atoms as a textile cleaning agent. The concentration of the lithium salt in the aqueous solution used according to the invention can be varied within wide limits, depending on the type of textile to be treated. According to preferred teaching According to the invention, the aqueous solution contains about 30 percent by weight lithium salts, in particular gecignet as lithium salts are lithium coconut fatty acid sulfate, Lithium capric acid sulfate, lithium tetra capric acid sulfate or a mixture of two or three of these lithium sulfates. According to further teaching of the Invention can be the 6c used according to the invention aqueous solution of a mixture of i.i'husmsalzcn also a small one! ' Share "of sodium coconut oil sulfate be added.

The advantage achieved by the invention is primarily to be seen in the fact that the aqueous solution of a mixture of lithium acids used, on the one hand, is characterized by a thorough cleaning ability and on the other hand, disadvantageous side effects that can lead to a quicker re-screwing of the cleaned textiles are reliably avoided. When the aqueous solution described is used according to the invention, the lithium salt or lithium salt remains as crystalline, solid deposits on the textile fibers after the water has evaporated, so that they can be removed together with the adhering dirt. Compared to known textile cleaning agents, the aqueous solution of a mixture of lithium salts used according to the invention is also characterized by a particularly high water-solubility, which means that textile cleaning agents can be achieved which contain significantly more active ingredients than was previously customary. Another advantage of the invention is that the aqueous solution of a mixture of lithium salts used according to the invention ^{remains clear even at temperatures of up to 0 °} C. and below. Finally, an advantage of the invention can also be seen in the fact that, compared with known foaming textile cleaning agents, the foam formation can be significantly increased, in particular through the addition of lithium capric acid sulfate.

Foam tests were carried out on a Ross Miles apparatus at 20 ^° C., various mixtures with different concentrations of active constituents being investigated. The results of these tests are summarized in the table below.

mixture

Momenran

Foam-

high

mm Ltthium coconut acid sulphate 65 Lithium Capric Acid Sulphate 200 Lithium coconut fatty acid sulfate + 10% lithium capric acid sulfate ... 90 Lithium coconut fatty acid sulfate ■ f 20% lithsum capric acid sulfate ... 110 Lit! Iium = coconut fatty acid sulfate + 30% lithium capric acid sulfate ... 143 Sodium Coconut Fatty Acid Sulphate 70

As can easily be seen from the figures in the table above, the foam formation is the same The lithium salt of capric acid is much stronger than that of coconut fatty acid only 30% lithium capric acid sulfate to achieve 60% of this benefit. It was also found that an addition of methyl-amino-acetic acid compounds for sodium coconut fatty acid su! fat, as has been suggested so far, the Momenf.an foam height reduced.

Below are a few examples that are of course not exhaustive, Jic invention will be explained in more detail:

B e i s ρ i e! !

Us was a mixture of the following ingredients manufactured:

Gc.vichtantt'ile

Lithiuni coconut oil sulphate 15%

Lithium capric acid sulfate 15%

Water 70% '

In this mixture, the lithium coconut oil

iif ^£ v ^S ^ ^fa ^ ^{by sulphating a} commercial alcohol derivative aas coconut oil with about

and about

CH ₁ (CHj) ₁₉ CH ₈ OH

made with SO ₈ ClOH. The lithium capric acid sulfate was obtained by sulfating a technically pure,

^ ' ⁰ Zs ¹ JpK CHs (CHj) ₈ CH ₂ OH

achieved with SC ₂ CiOH. The mixture remained ^{clear to 0 C} C and only became cloudy at lower temperatures.

The mixture was diluted in the proportion of 1 part of the solution with mh! Part of water and a nylon patch was treated with it. This was soiled with soot after drying. The nylon patch was then shaken out and compared to a nylon patch which was softer, without having been treated with the cleaning mixture, also soiled with carbon soot and then shaken out. The amount of soot visibly remaining on the treated patch was the same or even less than that of the nylon patch that had not been treated with the cleaning mixture.

Example 2

This example was done for comparison. It became a cleaning mixture of the following Components manufactured:.

The mixture was applied to a nylon film, which was then treated with soot in the manner mentioned in Example 1, it being found that the degree of soiling was significantly higher.

B *. game 3

The mix of be: spse! 1 was in proportion Part of solution diluted to about 29 parts of water, so

that a * solution with a total share of 1 ° / " active ingredients. The solution was then used to treat woolen fabrics in the im Example 1 used type described. Subsequent contamination of these patches in the im

»S example! 1 described with the dirt of a bag of a household vacuum cleaner and comparison with similar packs of woolen fabrics, which with the mixture according to example! 2 and were treated in a similar manner, again yielded the

»Superiority of the mixture according to the invention, in particular in relation to re-pollution.

Sodium coconut fatty acid sulfate 9 %

Sodium-N-Uurovl-Sareosinai 6V ₀

_Water g5 <w °

The mixture became ^{cloudy at 4 8 0} C and remained our clear at a temperature above f! 5 ⁰ C.

Claims (2)

Patent claims: 1. Use of an aqueous solution of a mixture of at least two lithium salts of Alkyisulfaten of saturated fatty alcohols with 10 to 14 carbon atoms as a textile cleaning agent !. 2. Use of an aqueous solution of a mixture for the specified in claim 1 Purpose, characterized in that it contains about 30 percent by weight of Lithiurosa! «. _x / Use of a water solution of a mixture for the purpose stated in Claim 1 and / or according to Claim 2, characterized in that it contains a small proportion of sodium coconut fat sulphate.