SU536220A1 - Detergent for cleaning metal surfaces - Google Patents

Description

The invention relates to the technique of washing and inter-working protection against corrosion of metal surfaces. The proposed composition can be applied in jet wash installations. Compositions for cleaning, degreasing and protecting metal products from corrosion are known, which contain a hydrocarbon solvent, an emulsifier, a corrosion inhibitor, and other components. Also known is a composition for cleaning metal surfaces, containing a carbohydrate solvent, an oil soluble inhibitor, and an aqueous solution of a surfactant. Such a composition is characterized by an insufficient detergency and a high efficiency of anticorrosive protection of the metal surface in the absence of a drying operation. To enhance the detergency without heating the composition, its stability and effective protection of metal surfaces from corrosion, ethanodamine and / or morphining salt of fatty acids with the number of carbon atoms of 7–9 were additionally introduced into the composition. sodium salt of alkyl sulfoethoxylates with the number of carbon atoms and the number of hydroxy groups of 3-4 and primary alcohols C – C in the following ratio of comhieHTOB, weight,%: Hydrocarbon solvent 1–1.3 Oil soluble corrosion inhibitor 0,01-O, C Ethanol cnova and / or morpholine salt of fatty acids Sodium salt of alkyl sulphoethoxylates 0.5-0.7 Primary alcohol O, 01-0, OZ To 1OO Desirable as; oil soluble corrosion inhibitor use calcium sulfonate. Ethanolamuschea and / or morpholino fatty acid salts with carbon atoms of 7–9 is a water-oil-soluble emulsifier; sodium salt of alkyp-sulfoethoxylates with the number of carbon

atoms 12-.1в and the number of ethoxyses 3-4- N oinopacTBopHMbiM emulsifier.

Hydrocarbon solvents, mainly industrial molecules, are used as solvents.

The drug is applied in the form of an emulsion (with respect to water, preferably 1.5-3 wt.%).

Example 1, Composition wt. %: diethanolamine caprylic acid - 1; the sodium salt of alkyl sulfoethoxylates - 7; Kalysh high molecular sulphonate - 0, ando-butyl alcohol - 0.02; transformer oil - 1.3; water - up to 100,

Example 2. Composition, wt. %: mor folin caprylic acid - 0.8 sodium salt of alkyl sulphoethoxylates - 0.6; high molecular weight calcium sulfonate — 0.02 isobutyl alcohol — 0.02; transformer oil - l, 2j water - up to 100.

Example 3. Composition, wt. % triatanamilln caprylic acid - 0.8; the sodium salt of alkyl sulfoethoxylates - 0.6; Kalys high molecular sulphonate - 0.01; isopropyl alcohol - 0.01; transformer oil - 1.3; water - up to 100.

Example 4. Composition, wt. %, diethanolamine caprylic acid - 1; the sodium salt of alkyl sulfoethoxylates - 0.7; high molecular sulphonate sulfate -0.02; isopropyl alcohol - 0.02, spindle oil - 1.3;, water - up to 100.

Example 5. Composition, wt. % morpholin caprylic acid - 0.9; sodium salt of alkyl sulfoethoxylates - 0.5; high molecular weight calcium sulfonate - 0.02 isopropyl alcohol 0.03; spindle mosch - 1,3; water - up to 1OO.

Example 6. Composition, weight,%: caprylic acid diethanols - sodium alkyl alkyl ester esipates - 0.6; high molecular weight calcium sulfonate - 0.03; isobutyl alcohol - 0.03; salt oil - 1.3; water - up to 100.

The emulsion preparation is a monochio-white liquid, with peg kim having a specific odor. The combination of an oil-soluble emulsifier and a water-oil-soluble inhibitor gives a synergistic effect, as a result of which the composition is self-emulsified in cold water. The prepared emulsion is stable, does not delaminate more than a month.

The proposed composition has a high dispersing ability with respect to oils, sulfofresol, refining pastes and other contaminants

The detergent capacity of this composition exceeds the known, and the washing is performed at room temperature, which is especially important for details of a complex configuration. No drying operation. After washing the parts, a thinnest protective film is formed, which reliably protects them from corrosion.

Laboratory tests proposed,

The composition was conducted on a jet washing unit at 22 ° C for 1-2.5 minutes, depending on the type of contamination. Moy - ke is subjected to a plate of steel 10 times "measure 150x70x1.5 mm. The quality of the wash is determined by the weight method.

The test results are presented in the table.

AS-8 engine oil

Suly} yufrozol GOST-122-54

Tests on corrosion against corrosion are carried out in the following manner: on the plate} steel 10 with dimensions 150Х7ОХ

2.5

15O

60

40

110

4.5 mm in two places are laid on

2.5 g chips from cast iron SCh 28-48 and

Claims (2)

60 moistened with 2 cm of the emulsion composition. 11l; .ytigu scraps go)) mo) ch1lrostat at 18–2 ° C with humid conditions, and periodic control () coziness of the formation of silt or corrosion. Results: the proposed composition - to rosi is absent during the month: a known composition - a phenomenon of corrosion after 30 minutes. Laboratory tests show that the detergency of the proposed composition is higher than the detergency ability of more than 2 times known, and the anticorrosion properties of the latter are | much inferior to anti-corrosion, the properties of the proposed composition. Claim 1, Washing agent for cleaning the metallic surface based on an aqueous solution of a hydrocarbon solvent with the addition of an oil-soluble corrosion inhibitor, so that, in order to increase the detergency of the agent, its stabilization and anti-corrosion properties of the agent, ethanolamine and / or 1m6folino salt of fatty acids are added to its composition with 7–9 carbon atoms, alkyl – Sulfoethoxylate sodium salt with 12–16 carbon atoms and 3–– hydroxy groups. 4 and primary alcohols C, - C in the following ratio of components, weight,%: Hydrocarbon solvent 1-1.3 Oil soluble corrosion inhibitor 0.01-0.03 Ethanolamine and / or morpholine fatty acid salt 0.8-1 Sodium alkyl sulfoetogasazilatov0, 5 -0.7 Primary alcohol 0, Water Up to 100 2. Detergent according to claim 1, characterized in that calcium sulfonate is used as a mastable-soluble corrosion inhibitor.