SU1059001A1 - Detergent for cleaning metal products from oil contamination - Google Patents

Abstract

WASHING MACHINERY (-alkyl) -polyoxyethylene sulfates with a degree of hydroxyethylation of 2-6 in the following ratio of components, may.%: Metasilic sodium 20-25 Triplylphosphate n attri 15-25 Polyoxyalkylene glycol ether of monoethanolamides of synthetic fatty acids of CjQ-Ceo 20-25 fraction (L Sodium or ammonium salt (Cd-C o-alkyl) of polyoxyethylene sulfates with the degree of ethoxylation 2-6 5-10 o el Calcified soda up to 100 co.

Description

The invention relates to machine-instrument engineering and can be used in the cleaning of parts and components of devices that require a high degree of purity from oil and other technological contaminants.

Synthetic detergents are known that are used in the removal of oil contaminants from metal products. For example, Vertolyne is known to contain triethanolamine, oleic acid, ethylenediaminetetraacetic acid disodium salt, tributyl phosphate, hydrochloric acid cadmium salt, sodium tetroborate, non-ionic surfactant and water L

The disadvantage of this tool is its low workability, due to its high foaming ability, which makes it difficult for its industrial application.

It is also known detergent based on nonionic surfactants containing sodium sulfate, sodium tripolyphosphate, carboxymethyl cellulose, phosphoric acid or its salt, perfume foam and soda ash 2.

Its disadvantage is the complexity of the system, which leads to the exfoliation of the defoamer during storage of detergent, deterioration of the quality of cleaning products.

The closest to the proposed effect and technical essence is a composition containing, in wt.%: Polyoxyalkylene glycol ether of monoethanolamides of synthetic fatty acids fraction (2d (syntamide - 510), ethoxylated alkylphosphate, sodium metasilicate, sodium tripolyphosphate and calcined soda pe, py. The t-agent is not sufficiently effective, as it has a low solubilizing, emulsifying and washing ability, and is also used only at high temperatures (85 ° C).

The aim of the invention is to increase the washing effect while lowering the washing temperature.

The goal is achieved by the fact that detergent for cleaning metal products from oily contaminants containing sodium metasilicate, soda ash, sodium tripolyphosphate and polyoxyalkylene glycol ether of synthetic fatty acids CIQ-CJO, additionally contains sodium or ammonium hydrogen α-alkyl) -folio: ethylene sulphates with a degree of ethoxylation of 2-6 in the following ratio, wt.%:

sodium tetasilicate 20-25

Tripolyphosphate

rub 15-25

Polyoxyalkylene glycol ether

monoethanolamides.

synthetic fatty acid fraction

С о-С-г20-25

Sodium or

ammonium salt

(Cj-Cjo-alkyl) -polyoxyethylene sulfates with a degree

ethoxylation

2-65-10

Calcium

soda up to 100

Sintamide-510 at a concentration of 20-25% provides a high solubilizing; and emulsifying action When the concentration of syntamide-510 is below 20%, the detergent action of the agent is reduced. Increasing the concentration above 25% does not give a positive effect. Introduction of a sulfated and ethoxylated synthetic fatty alcohol salt at a concentration of 5-10% ensures the cleaning of parts at 55-60 0. A decrease in the concentration below 5% requires an increase in the cleaning temperature. With increasing concentrations above 10%, the detergency does not increase at the indicated temperature. The surface tension of the detergent is reduced to 30 mN / m.

The surface tension of a known agent is 35-37 mN / m,

Tripolyphosphate is a complexing agent and a humidifier. A decrease in its concentration below 15% does not ensure the complete complexation of salts of the liquid, and an increase in the concentration of more than 25% does not give a positive effect.

The optimum concentration of sodium metasilicate is 20–25% and soda ash 40–15%. A further increase in the concentration of these salts over the indicated limits is impractical because they readily hydrolyze, which makes it difficult to store the detergent, the agent, and the subsequent washing of the parts after treatment in the detergent.

With this ratio of components, a high detergency of the described agent is provided.

. The preparation of the detergent is carried out by dry mixing the components. A free-flowing, light yellow piston is obtained, readily soluble in water. The cleaning of metal products from oil pollution is performed in a solvent with a concentration of G5–20 g / l at 55–6 ° C in a jet-type installation with a pressure of 100 mm water column.

Example. Testing was performed for washing parts of ferrous and non-ferrous metals from oil contaminants.

Clean samples (preliminarily cleaned in an alcohol – freon mixture), suspended on an analytical balance, put oil contaminants in an amount of 15–10 mg / cm. Then, the parts are cleaned in laboratory-type jet machines with a pressure of up to 100 mm water column. when in the proposed and 85 ° C in known compositions at a concentration of 20 g / l for 1-5 minutes Then it is washed in warm water (45 ° C) and dried for 10 minutes (convection drying), then weighed on an analytical balance. The degree of surface cleanliness is determined by weight metol in accordance with GOST 18206-72.

Tests of the proposed detergent were carried out with a different content of components, and the well-known W at the optimum content of the components.

The ingredient composition of the tested detergents is presented in table 1.

Table 2 shows the data obtained when testing detergents of various formulations. Replacing the sodium salt with the ammonium salt of sulfated ethoxylated synthetic fatty alcohol in recipes gives a similar result.

As follows from Table 2, the proposed composition removes contaminants more efficiently than those known at lower temperatures. The advantage of the proposed detergent in comparison with the known, in addition to the wetting effect, is in reducing the energy costs of heating the bath, due to lower cleaning temperatures. For this reason, the scope of application of the proposed agent is expanded, since it can be used to clean non-metallic materials (for example, glass fiber textolite).

0

These advantages are achieved as a result of the addition of a surfactant — salts of sulfitated ethoxylated synthetic fatty alcohol,

5 providing increased solubilizing and detergency composition.

In comparison with the organic solvents used, the best equipment of the kind, such as freon, methyl chloroform, the proposed detergent is 5-10 times cheaper. Besides its low cost, its advantage is

5 non toxicity, due to which there is no need to use expensive equipment that provides safety when working with detergent. With this control, the high detergent effect of the cleaner allows for greater cleaning efficiency and productivity.

5 The proposed detergent does not contain biological hard-to-decompose hard constituents and its use will help reduce environmental pollution.

Table 1

Sodium metasilicate 28 sodium tripolyphosphate 26 sintamide-5104

Sodium salt of sulfated oxyethylated synthetic fatty alcohol

Ethoxylated alkyl phosphate 2

Soda Ash 40

23

25 20

25. 23

25

ten

26

15

40

table 2

Claims (1)

DETERGENT FOR CLEANING METAL CONTAMINANTS FROM OIL containing sodium metasilicate, soda ash, sodium tripolyphosphate and a polyoxyalkylene glycol ether monoethanolamides of synthetic fatty acids of fraction C (q -S2o * P ® ^{tlichaYu1 eesya} in that, in order to increase moyuschego action at lower temperatures otivki , the product additionally contains the sodium or ammonium salt of (С $ –С go-alkyl) -polyoxyethylene sulfates with a degree of hydroxyethylation of 2-6 in the following ratio of components, May.%: Metasilicon Sodium 20-25 Sodium Tripaliphosphate 15-25 Polyoxyalkylene glycol monoethanolamides of synthetic fatty acids of the fraction Cj _O -C ₂ o Sodium or ammonium salt (C ₅ -C _go- alkide) of polyoxyethylene sulfates with a degree of hydroxyethylation of 2-6 Calcined soda 20-25 5-10 Up to 100 105900)