CS276115B6 - Soaking and pre-washing agent - Google Patents

Abstract

The solution is a soaking and pre-washing agent composed of 2.5 to 5 parts by weight of sodium alkyl polyglycol ether sulfate, where the alkyl contains 10 to 10 carbon atoms, preferably 12 to 15 carbon atoms, the number of ethyleneoxy groups in the molecule is 3 to 5, 3 to 6 parts by weight of sodium salt of dialkyl sulfosuccinic acid, where the alkyl groups contain 6 to 10 carbon atoms, preferably 8 carbon atoms in the alkyl, 5 to 10 parts by weight of triethanolamine, 5 to 10 parts by weight of technical oleic acid, 2.5 to 5.5 parts by weight of trisodium nitrile triacetic acid, 0.1 to 0.3 parts by weight of preservative, 0.5 to 4 parts by weight of ethanol and 60 to 80 parts by weight of water. The soaking and pre-washing agent according to the solution may contain 0.2 to 3 parts by weight of oxyethylated alkylphenol, where the alkyl contains 8 to 10 carbon atoms and the number of ethyleneoxy groups is 9 to 10 in the molecule, and 0.1 to 2 parts by weight of perfume.

Description

The invention relates to a dipping and prewashing composition based on anionic and nonionic surfactants with the addition of further auxiliaries.

The purpose of the soaking and pre-washing agents is to release the dirt adhering to the textile material before the washing process itself. Soaking or pre-washing is mainly used for washing heavily soiled textiles, especially those intended for washing in boiling.

The soaking process plays a very important role in washing so-called heavy dirt. Its essence lies in the fact that particles of adhering dirt are released from the surface of the fabric, which can then be easily removed.

For dipping purposes, mixtures of solids in powder form are generally used. Its components are, for example, sodium carbonate, tripolyphosphate, tetrasodium or tetrakalium bisphosphate, alkali silicates, certain anionic surfactants, trisodium phosphate and the like. However, the main component of high-quality soaking and pre-washing agents in most of these preparations is a mixture of phosphates, up to a total of 50% of the mixture. It is known that the use of phosphates acts synergistically on the washing process, but their content in wastewater is environmentally undesirable. They cause eutrophication of water and therefore there is a tendency to reduce their amount in detergents and soaking agents to a minimum. The soaking and pre-washing agents produced in our country are powdery, at the recommended concentration of 6 to 0 g / l they are poorly soluble in cold water and low foaming.

We have found that a suitable combination of selected anionic and nonionic surfactants with the addition of other excipients can be used to prepare a liquid dipping composition with high efficiency without the use of phosphates. The synergistic mixture consists of:

2.5 to 5 parts by weight of sodium alkyl polyglycol ether sulfate of the general formula

R - O - (CH -CH_ _a-0) - OSO_Na, ώ <- Π o where C ^ to _C ^, preferably C ₂ to C ₁₅ to 6 parts by weight of the sodium salt of sulfosuccinic acid dialkyl ester of the formula

R - 00CH ₂

R - OOCH - SO ₃ Na where R and alkyl C $ to Ο ^ θ, preferably Οθ 5 to 10 parts by weight, triethanolamine, 5 to 10 parts by weight, technical oleic acid, 2.5 to 5.5 parts by weight, trisodium nitrilotriacetic acid salts, 0.1 to 0.3 parts by weight, a preservative, 0.5 to 4 parts by weight, ethanol and 60 to 80 parts by weight. water.

The soaking and prewashing composition may contain

0.2 to 3 parts by weight of an oxyethylated alkylphenol of the general formula

R -

O - _{(CH2 CH2} 0) _n - H, wherein R is alkyl C, to C _{1Q Q} ana 9-10 and

0.1 to 2 parts by weight of perfume.

In the soaking and pre-washing composition according to the invention, said combination of surfactants is newly used, which form a synergistic mixture. Its great advantage is that neob

CS 276 115 BG reaches phosphates and thus meets the requirements for modern preparations of this kind. The mixture forms a clear solution, which is immediately mixed with water in any ratio and is better dosed and dissolved against the powder compositions used hitherto.

The state testing laboratory evaluated and verified the effectiveness of the soaking and pre-washing agent. The evaluation was supplemented by the determination of pH and foaming in an automatic washing machine at a dosage of 100 g for prewash. The soaking efficiency was evaluated at a concentration of 5 and 8 g / l. For comparison, the standard GDR □ concentration 3 and 5 g / 1, which is used by the state testing laboratory for mandatory evaluation of this group of products, was used.

Evaluated pH indicator soaking efficiency 40 ° C% abs. conc. 5 g / l 8 g / l soaking efficiency 40 ° C% roll. - related to the GDR standard conc. 5 g / 1 g / 1 foaming in automatic washing machine - foam height in cm soaking and pre-washing agent

8.8

4.3

21.9

14.0

76.6

Dipping and prewashing composition according to the invention at a temperature of 40 ° C and conc. 8 g / 1 meets the condition of evaluation of the state testing laboratory for products of this group, based on the GDR standard, ie 40 to 60% rel. according to the type of product. Dipping and pre-washing agents of this group have an optimum concentration of 10 g / l under the stated conditions, ie at a temperature of 40 to 50 ° C.

Example 1 'parts by weight 29 to 30% of a solution of a C _1-2 to _0.5 alkyl sodium polyglycol ether sulphate (3 to 5 EO), 7.5 parts by weight of triethanolamine, 7.5 parts by weight of technical grade oleic acid and 12 parts by weight of A 35% solution of the trisodium salt of nitrilotriacetic acid was stirred for 30 minutes at 80-85 ° C. 51.6 parts by weight of water and 8 parts by weight of water are added to the resulting mixture. 50% aqueous solution of sodium salt of sulfosuccinic acid di (2-ethylhexyl) ester and 1 part by weight of ethanol. After cooling to 30-40 ° C, 0.25 part by weight of 36 to 38% formaldehyde solution.

Example 2 parts by weight 29 to 30% of an aqueous solution of C _1-2 alkyl polyglycol ether sulphate (3 to 5 EO), 7.5 parts by weight of triethanolamine, 7.5 parts by weight of technical grade oleic acid, 12 parts by weight. A 35% aqueous solution of the trisodium nitrilotriacetic acid salt was stirred at 80-85 ° C for 30 minutes. 51.3 parts by weight of water, 1 part by weight of ethanol and 10 parts by weight of ethanol are added to the resulting mixture. 50% aqueous solution of di (2-ethylhexyl) astar sodium sulfosuccinate and, after cooling to 30-40 ° C, 0.8 parts by weight. 36 to 38% of a formaldehyde solution and a mixture consisting of 0.3 parts by weight of nonylphenol polyglycol ether (9 to 10 EO) and 0.2 parts by weight of perfume.

Claims (2)

PATENT CLAIMS I, Soaking and pre-washing agent based on anionic and nonionic surfactants, with the addition of other auxiliaries, characterized in that it contains 2.5 to 5 parts by weight of sodium alkyl polyglycol ether sulfate of the general formula R ~ O - (CH 2 -CH 2 -O) n -OSO-Na, '2 2' n 3 * where R »alkyl is C ₁₀ to C ₁₈ , preferably C ₁₂ to C ₁₅ and n 3 to 5, 3 to 6 parts by weight of sodium dialkyl sulfosuccinate R - 00CH ₂ R - OOCH - SO ₃ Na where R is alkyl C ₆ to preferably C _Q , 5 to 10 parts by weight, triethanolamine, 5 to 10 parts by weight, technical oleic acid, 2.5 to 5.5 parts by weight, trisodium salts of nitrilacetic acid , 0.1 to 0.3 parts by weight of a preservative, 0.5 to 4 parts by weight of ethanol and 60 to 80 parts by weight of water. 2. Soaking and prewashing composition according to claim 1, characterized in that it contains 0.2 to 3 parts by weight of oxyethylated alkylphenol of the general formula R - - O '(CH ₂ CH ₂ 0) _n - H wherein R is alkyl to C _Q ana 9-10 and 0.1 to 2 parts by weight of perfume.