CS266947B1 - Detergent for low temperatures - Google Patents

Abstract

Detergent for application at low temperatures containing surfactants, chelating compounds, fillers, dyes and other additives is that it contains bis-polyoxyethylene cycloalkylamine of formula I wherein 1 is natural 4 to 46, m is 1 to 10 and n is natural is 0 or a natural number of 1 to 10. Detergent it may contain an alkyl polyglycol or an alkyl phenyl polyglycol. The detergent is intended for cleaning heavily soiled surfaces, food equipment, eg smokehouses, ovens or washing machines fabrics.

Description

The present invention relates to an oxyethylene cycloalkylamine-containing detergent which is effective even at low temperatures.

In recent years, the necessary detergents for many applications have been effective even at low temperatures. This is related to the use of synthetic fabrics and rising energy prices. Also, when cleaning solid surfaces, it is often not possible to provide a higher temperature at which commonly used detergents are effective. The drop in temperature negatively affects the physical properties of the detergent solution, especially the solubility and effectiveness of its components. As the temperature decreases, the stiffness of the impurities increases and the physicochemical processes leading to the breaking of the dirt-surface bond also slow down.

The above problems are solved by using organic solvents to wash heavily soiled fabrics or to degrease solid surfaces. For aqueous solutions, efficacy is achieved by increasing the concentration of nonionic surfactants and other components. In the case of detergents intended for small consumers, this problem is solved by the addition of enzymes, in particular alkaline proteases and activators of peroxy compounds. Furthermore, the washing efficiency is increased by the addition of oxyethylene alcohols with a number of carbon atoms of 8 to 12, or other substances, for example with special sequestering compounds. However, for a practically usable agent, it is necessary to choose substances that are also economically satisfactory and are also environmentally acceptable. These problems are solved by a detergent for application at low temperatures containing surfactants, chelating compounds, fillers, colorants and other additives, the essence of which is that it contains 0.2 to 40% by weight of bis-polyoxyethylene cycloalkylamine of general formula I.

(CH ₂ CH ₂ O) _m H

(CH ₂ CH ₂ O) _n H wherein 1 is a natural number from 4 to 6, m is a natural number from 1 to 10 and n is 0 or a natural number from 1 to 10. The invention also provides a detergent comprising 0.2 to 40% by weight of bis- polyethylene cycloalkylamine I and 0.2 to 35% by weight of an alkyl polyglycol or an alkylphenyl polyglycol having an average relative molecular weight of 90 to 2,000.

The advantage of the detergent according to the invention is that it is highly effective even at low temperatures. The amine of formula I positively affects the physical properties of the detergent application solution at low temperatures. Improves the penetration of the detergent solution to the surface of the cleaned substrate. The concentration affects the foaming of the detergent solution, which increases with increasing concentration of the amine of formula I. However, the foam formed is unstable and constantly changes on the cleaned surface by its dissolution and thus the spontaneous exchange of the detergent solution on the cleaned surface. The effectiveness of the detergent at particularly low temperatures is increased by the addition of alkyl polyglycol and / or alkylphenyl polyglycol. The amine of formula 1 is an available raw material. It can be prepared by oxyethylation of cyclohexylamine.

The detergent of the invention can be used to clean metal parts from mineral, preservative and cutting oils instead of organic solvents. The detergent according to the invention makes it possible to lower the temperature of the cleaning solution or to increase the efficiency of the cleaning process while maintaining the temperature. The detergent according to the invention can be used for the preparation of foams in the cleaning of food equipment, e.g. smokehouses, combi ovens, other technical or technological equipment, or tile lining or room floors. The detergent of the present invention can be effectively washed by soiling the synthetic fabric at 40 ° C.

The degreasing effect of oxyethylenated cycloalkylamine detergents according to the examples and detergents of the same composition which contain an analogous oxyethylened alkylamine is shown in Table 1. It can be seen that detergents containing oxyethylenated cycloalkylamines have a higher activity.

The invention is illustrated by the following non-limiting examples.

Exemplary embodiments

Example 1

2,000 liters of water are charged to a duplicated 5,000,000 stainless steel stirred reactor, heated to 60 DEG C., and 280 kg of sodium dodecylbenzenesulfonate, 120 kg of sodium alkyl sulfate, 120 kg of dodecylhexaethylene glycol, 400 kg of 30% sodium dodecyltriethylene glycol sulfate are added sequentially with stirring. 120 kilograms of tetraoxyethylenecyclohexyl amine and 960 l of water. The detergent is suitable for cleaning solid surfaces contaminated with oil.

Example 2

In the same manner as in Example 1, a detergent containing 2% sodium alkyl sulfate, 4% sodium cumenesulfonate, 10% potassium hydroxide, 7% water glass, 6% bis- (2-hydroxyethyloxyethyl) -cyclohexylamine and four percent bis- (2-hydroxyethyloxyethyl) - was prepared. cyclopentylamine. The detergent is suitable for cleaning smokehouses in meat processing plants and acts without mechanical effect after spraying with foam or solution. Conventional burns can be rinsed with a stream of water after 10 minutes of exposure.

Example 3

400 kg of sodium metasilicate and 50 kg of pentasodium triphosphate are introduced into a mixer for mixing bulk materials and left

CS 266 947 Bl me mix 5 min. 80 kg of nonylphenyloctaethylene glycol are then injected with stirring and the mixture is homogenized for 30 minutes to give premix A. ^{500 kg of monoethanolamine are introduced into a 2 m 3} reactor equipped with a stirrer and 450 kg of bis- (2 -hydroxyethyloxyethyl) -cyclohexylamine and 50 kg of bis- (2-hydroxytetraethyleneoxyethyl) -cyclododecylamine, premix B is thus formed. to 10 ° C. Spray or foam application is also preferred.

Example 4

300 kg of pentasodium triphosphate, 200 kg of powdered sodium dodecylbenzenesulfonate (50% of active substance), 30 kg of sodium soap, 15 kg of carboxymethylcellulose, 135 kg of sodium sulfate, 200 kg of sodium carbonate, 40 kg of sodium metasilicate and 3 kg of optical brightener. 60 kg of dodecyldecaethylene glycol and 17 kg of bis- (2-hydroxyethyloxyethyl) -cyclohexylamine are sprayed with constant stirring. The detergent thus obtained is suitable for washing at temperatures of 20 to 40 ° C.

Table 1

Degreasing efficiency of detergents

Detergent according to the example

Degreased surface (%) alkylamine cycloalkylamine

1 65 69 2 58 75 3 69 76 4 * 46 * 54 *

For testing, a method of spraying the foam on a solid surface was used, after which the foam was allowed to act and then rinsed with water.

* For sample 4, the efficacy was evaluated on a standard soiled EMPA 101 fabric in a laboratory washing machine at 30 ° C.

Claims (2)

OBJECT OF THE INVENTION Detergent for application at low temperatures comprising surfactants, chelating compounds, colorant fillers and other additives, characterized in that it contains 0.2 to 40% by weight of bis-polyoxyethylene cycloalkylamine of formula I (CH ₂ CH ₂ O) _m H '(CH ₂ CH ₂ O) _n H where 1 is a natural number from 4 to 6, m is a natural number from 1 to 10 and n is 0 or a natural number from 1 to 10. 2. A detergent according to claim 1, characterized in that it contains 0.2 to 40% by weight of bis-polyoxyethyleneoxycycloalkyl amine of the formula I and 0.2 to 35% by weight of alkylpolyglycol and / or alkylphenylpolyglycol with an average relative molecular weight of 90 to 2,000.