SU883167A1 - Detergent for cleaning metallic surface - Google Patents

Description

The invention relates to detergents for cleaning metal products from emulsions, oils and lubricants used in machining parts. Water-alkaline detergent races are known, 1: thieves based on inorganic salts and surfactants {l MC-6 detergent is known, representing a water solution of a mixture of soda ash 20 g / l, sodium metasilicate 13 g / l, sodium tripolyphosphate 15 g / l and polyethylene glycol ethers of synthetic fatty alcohols fraction 2-3 g / l 2. This tool has a sufficient detergent action. However, this agent contains a large amount of sodium tripolyphosphate, which causes the eutrophication of water in wastewater, and the high content of sodium carbonate makes it difficult to prepare a solution of detergent because pain dissolves in this mass of sodium carbonate and it is difficult to dissolve the crystalline hydrate. The purpose of the invention is improvement of the washing effect. The goal is achieved by the fact that a water-based detergent containing sodium metasilicate, soda ash and popiztilenglyko Synthetic fatty alcohols of the Cp-Qjg fraction, additionally contains polyethylene glycol monoethanol amides of the α-synthetic synthetic fatty acids fraction at the following component ratio, wt.%: Metasilicate sodium 2.5-3 Calcined soda 0,8-1 Polyethylene glycol mono ethanol. Acids of the CYD- fraction, 15-0.2 3 Polyethyleneglycol x pueic esters of synthetic fatty alcohols of the fraction 2-3 Water up to 100 Use as a surfactant a mixture of syntamide-5 (polyethylene glycol esters of monoethanolamides synthetically The x fatty acids of the fraction of synthanol DS-4 (polyethylene glycol esters of synthetic fatty alcohols of the CvQ-Cg fraction), which have a strong detergent and emulsifying effect, cause a synergistic effect, resulting in different solubility in water and in the organic phase. Sintamide-5, having a longer ethoxylated chain, preferably dissolves in water. Sintanol DS-4, having a shorter ethoxylated chain, has a greater affinity for the organic phase. The detergent solution is prepared by dissolving the ingredients in warm water for 10-15 minutes. Degreasing is carried out at 60-80 ° C for 5-10 minutes with stirring of the solution by any method. After degreasing, the parts are washed with cold running water and dried with compressed air. Tests were performed - the proposed detergent composition and lime, the ratios of the components are given in 9 tab. 1. Table 1

2.5 1.3

0.8

100%.

TO

The data obtained are given in table. 2. 7 Synthetic ethylene glycol esters of synthetic fat 0, 3 0.2 0.2 alcohols Polyethylene glycol esters of monoethanolamides synthetic 0.2 0.15 fatty acids Up to 100 Up to 100, The quality of cleaning is determined by the results of the removal of parts of spun oil from the surface. As parts of a simple form, parts with holes with a diameter greater than 10 mm are taken, such as sleeves, glasses, etc. As parts of a complex shape, parts with blind holes, with through holes of small sizes, various channels, threads, notches and and so on. The number of washed contaminants is determined by the difference in weight of the soiled and washed parts. The amount of unwashed contaminants is determined by the difference in the weight of the parts cleaned in the solution of the proposed detergent and dried, and the weight of the parts washed in toluene and aviation gasoline and also dried. The coefficient of detergency calculated by the formula:

table 2

1 Simple form

ten

Complicated

80 form

120

Simple form

7

Difficult

90

120 form

(known - Simple) form 15 30

Difficult

form 150 600 As can be seen from the table. 2 The solution of the proposed detergent cleans the part from oily contaminants 2 times faster than the known composition. Under the conditions of the absence of dynamic excitation of the solution, which takes place when cleaning parts with blind holes, parts are cleaned 3 times faster. The solution of the proposed wet agent has a slight foaming, does not corrode products from steel, aluminum alloys and copper alloys. The addition of sodium carbonate to the detergent composition in a relatively small amount facilitates the preparation of the washing solution. The ingredients that make up the detergent are biologically mild substances. Excluding phosphates from the detergent composition reduces the effect of the detergent. 0.0595 0.00002 99.996

Also

1,87372 0,00012 99,993

0.53878 0.00001 99.999

1,86392 0,00010 99,994

0.54378 0.00001 99.998

Claims (2)

1,87596 0.00012 99.994 for sanitary conditions of wastewater. DETAILED DESCRIPTION OF THE INVENTION A detergent for cleaning a water-based metal surface containing sodium metasilicate, soda ash and polyethylene glycol O (| synthetic fatty alcohols of the -Cg fraction, characterized in that, in order to improve the washing effect, it additionally contains polyethylene glycol esters of the ethanol mixtures of the same ethanol mixtures, and in addition to the detergent properties, it also contains polyethylene glycol esters of the ethanol mixtures containing C6 fractions, in order to improve the detergent effect acid fraction in the following ratio, wt.%: Sodium metasilicate 2.5-3 Soda ash 0.8-1 7 Polyethylene glycol esters of synthet monoethanolamides of cicary dihydric acids fraction 0.15-0.2 Polyethylene glycol esters of synthetic fatty alcohols fraction 0.2-0.3 Water Up to 100 883167 .8 Sources of information taken into account in the examination 1. Recommendations for the use of new cleaning tools and machines details 5 in the repair.M., GOSNITI, 1975, pp. 29-34. 2. USSR author's certificate number 397536, cl. With P D 1/66, 1971 (prototype).