SU742456A1 - Detergent for metal surface cleaning - Google Patents

Description

The invention is suitable for detergents and can be used in various fields of mechanical engineering, in general, in nuclear engineering and boiler construction for degreasing of metascic surfaces from conservational lubricants (Ac, emulsols and industrial pollutants Sch) and preparing the surface for painting. The industry widely uses detergents based on surface-active substances (surfactants) and non-organic salts, which provide an adequate quality of degreasing. Known detergent compound 11. Containing the following ingredients,%: Sodium metasilicate 27 - 37 Sodium tripolyphosphate 23 - 27 Non-ionic surfactant - polyethylene glycol sfir monoethanolamine FFA C, about 6–12 Calcium soda up to 100 However, when washing the components, to wash the components of the components, up to 100, but when washing the components of the components, to wash the components of the components, up to 100, but when washing the components and the components of the components, to wash the components of the components, FDA C, about B6-12 oils, soot, the described detergent has a high temperature (60 - 100 ° C). In addition, it is ineffective, as it does not launder heavy soils, such as conservation lubricants (VNIINP or VSH1INN, NG). Known detergent composition 2 for cleaning metal surfaces from various contaminants, containing the following ingredients, wt.%: Calcium soda 39-0 Sodium tripolyphosphate 25-6 Potassium phosphate of polyethylene glycol zirpha kirna alcohols 10 - 3 1% salt of potassium metasilicate sodium Up to 100 It has a strong foaming ability and high operating temperature (60 - 100 ° C). In addition, a thin white deposit is left on the washed surface due to the large (39%) content of soda ash. This limits the use of the composition for the degreasing of large-sized products used in nuclear engineering. Closest to the proposed composition 3, containing wt.%: Refined

alkylarylsulfonate1,0 - 1,5

Metasilicate sodium 45 - 65

Trisodium Phosphate8-15

Soda Ash 25-35

The disadvantages of the described composition, besides the high working temperature of the solution (60 - 100 ° C) and large foaming, are insufficient emulsifying capacity, since refined alkylaryl sulfonate belongs to the surfactant group with minimal emulsifying capacity, which significantly reduces the service life of the detergent composition, as well as non-emulsified soils cause re-contamination of parts, although the brush reserve of the composition is significant.

The purpose of the invention is to reduce foaming while reducing the working temperature.

This goal is achieved in that a water-based detergent containing an anionic surfactant, sodium metasilicate and a sodium salt of phosphoric acid, additionally contains ethanolamide i. synthetic fatty acid fraction Cs-C, and the sodium salt of synthetic fatty acid (FFA) fraction Cj-Cg "carboxymethylcellulose with the following ratio of ingredients, wt.%:

Anionic surfactant 10-15 Ethanolamide synthetic fatty acid fraction Cj-C, 0.5-1 Sodium salt of synthetic fatty acid fraction CS-Q5-10 Sodium salt of phosphoric acid 5-10 Carboxymenitolcellulose 0.1-1 Water Up to 100

Retouching

Natrialkyl sulfate primary fatty alcohols fraction Cjo-Cte

Sodium salt of FFA fraction C5-Sat

Sodium tripolyphosphate

Sodium metasilicate

Carboxymethyl Cell

Ethanolamide fraction

Cj-C,

Water

Alkylaryl sulfonate 1-1,5 Metasilicate

on three

12.5

45 - 56

15

ten

Trisodium Phosphate 8-15

ten

ten

Soda Ash 25 - 35

0.75 63.75

55

Medium reaction

Method of determining the pH of the medium on the pH meter

Tu 38 10796-76 FCM-1 detergent preparation As an anionic surfactant, it is desirable to use sodium alkyl sulfate of the primary fatty alcohols of the Cio-Cifi fraction. The detergent composition is prepared with a FULL mixing of the components. The table shows 1fimery test composition and comparing them with known means. Compared the effectiveness of the proposed tool shows that a positive effect is created, which shows that it is possible to use a handle to clean metal products by reducing the operating temperature of the washing solution to 20 ° C and the processability of using the composition during mechanical washing due to the almost complete absence of foam in the washing solution. FORM OF THE INVENTION 1. Detergent for cleaning a metal surface with an aqueous base containing an anionic surfactant.

Table continuation

10-11 10-I10-P

7-8

20

20

20

60

4-5

7-8

7-8

20 20 20 20

five

5 6

40 80

6 sodium meta-acidic acid and phosphoric acid sodium salt, characterized in that, in order to reduce the foaming of the 1fi while lowering the working temperature, the agent additionally contains C5-C7 ethanol and synthetic synthetic fatty acid, Cs-Cfi sodium salt of synthetic fatty acid, Cs-Cfi and carboxymethylcellulose glucose pattern. components, wt.%: Annonous surfactant 10 - 15 Ethanolamide synthetic fatty acid, Cj-C, 0.5 - 1 Sodium salt of synthetic fatty. Acids of CS-Q5-10 fraction Sodium salt of phosphoric acid 5-10 Sodium metasilicate 5-10 Carboxymethylcellulose 0.1 - 1 Water Up to 100 2. Means according to claim 1, characterized by the fact that, as an anionic acid, supernatant 7442456 "

the then-active substance agent contains alkyl-1. USSR Copyright Certificate № 397536,

sodium sulfate primary fatty alcohols fraction-Cl. C 11 O 1/66, 1973. W ™ C, o-Cj6.2. USSR author's certificate N 248887,

Sources of information, S 3. USSR author's certificate N 193659,

1 finite in attention with the expertise of the dec. C And D 3/065, 1965 (1 photo).

cl. From 11 to 1/34, 1968.

Claims (2)

Claim 1. Detergent for cleaning a water-based metal surface containing an anionic surfactant, sodium metasilicate and sodium salt of phosphoric acid, characterized in that, in order to reduce foaming while lowering the operating temperature, the agent further comprises an ethanolamnd synthetic fatty acid fraction C ₅ -C ₇ , sodium salt of a synthetic fatty acid of the C $ —C ₆ fraction and carboxymethyl cellulose in the following ratio of components, wt.%: Anionic surface active substance 10 - 15 Ethanolamnd Synthetic fatty acid fractions C ₅ -C ₇ 0.5 - 1 Synthetic sodium salt which is oily. acid fraction from _{5 to 6} 5-10 Phosphoric Salt 5 - 10 ' acid Sodium metasilicate 5-10 Carboxymethyl cellulose 0,1 - 1 Water Up to 100 2. The tool according to claim 1, characterized in that, as the anionic surface 7 742456 of the no-active substance, the tool contains sodium alkyl sulfate of primary fatty alcohols of a fraction of ₁₀ -C _1b .