SU1117313A1 - Detergent for cleaning precision components from mineral oils and fats - Google Patents

Abstract

1. DETERGENT FOR CLEANING PRECISION PARTS FROM MINERAL OILS AND FATS, containing a surfactant and acetone, characterized in that, in order to improve the quality of part cleaning and reduce the volatility of the product, it additionally contains diethylene glycol in the following ratio of ingredients, us. %: 20-50 Diethylene glycol Surface active 3-5 Up to 100 Acetone 2. Means according to claim 1, different from that and. that as a surfactant it contains sodium alkanesulfonate or (L polyethylene glycol ether, synthetic fatty alcohols fraction (B

Description

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O9 ". The invention relates to a processing technology for optical parts and can be used in the optical-mechanical industry for cleaning various parts, in particular parts from flying dangerous non-silicate STK type stains, from mineral oils, greases and fats. Known detergent composition; for optical components from oils and fats based on acetone, gasoline, ethanol, and ester, however, formulations based on these solvents are highly volatile, flammable and toxic. In addition, these solvents are in short supply. IchvESten anhydrous washes; 111 its composition contains an organic solvent - TeTviai-idrofuran and a surfactant - waste OC-2 () in the following ratio of components, weight.A: tetra hypofuran 9798, preparation OS-20: -3. This composition is volatile and less toxic 12 J. However, the composition has a week, a residual degreasing effect and Tie has a smell that is 1m, which limits its use. The most to be proposed by technical essence is its own composition for cleaning preparatory parts 3, containing, by weight. %: Azeotrope and a mixture of trichlorotrifluoroethane and acetone85-90 Over the nose a TITO active substance is polyethylene glycol ether of synthetic fatty alcohols of fraction C ((DS DS-10) Up to 100) However, known costagism has a high volatility and leaves indelible deposits on the glass surface. when washing hazardous glass of the STK brand, there is a possibility of corrosive action of acetone and freon with respect to these glasses.Therefore, on the surface during washing, rasters remain in the form of a dot and brown deposit 132 due to lero additional chemical washing of parts. The aim of the invention is to improve the quality of cleaning parts and reduce the volatility of the agent. The goal is achieved by the proposed means for cleaning precision parts of mineral oils and fats containing surfactant and acetone which additionally contains diethylene glycol in the following ratio of components, May.%; Diethylene glycol 7.0-50 Surface active 3-5 Acetone Up to too Alkansulfo is used as a surfactant sodium atom or a polyethylene glycol ether of synthetic fatty) alcohols 1x fraction C jQ, detergent is prepared as follows. The required amount of diethylene glycol is poured into the container, a surfactant is added and the mixture is dissolved with acetone. The resulting solution is well mixed. The quality of cleaning is assessed by the degree of wetting, the surface with water using the drop method. The degree of cleaning of parts by wetting consists in determining the wetting angle of the surface with water. The wetting angle is a characteristic of the surface properties of solids and is determined by our surface liquid-solid and tangent to the liquid-gas surface at the point of contact with the solid. Parts treated in grade 14 are centered on machines of the mark CS-50 using mineral oil IMP as mineral lubricant and washed with the test compounds. Then the parts are washed with water and rubbed dry with a cambric napkin. A drop of water is applied to the dried surface. The contact time of a drop with a surface is 5 MIN; the measurement error of the angle i 2 °. The table presents the test results. As a surfactant in the formulations, use is made of DS-10 syntanol or volgonate (alkanesulf (znat). Volgonat is sodium alkanesulfonate (+) CHSOjH, where n + m is 11-17 4.

Lime 3j

1. Diethylene glycol surfactant

Acetone

2, Diethylene glycol Volgonat

50

High volatility of the composition, dots etching and raids

60

The composition is volatile, incomplete rastravki

70

45

The composition maloletuch, raids absent

Reducing the content of diethylene glycopes and surfactants below the minimum limit increases the volatility of the composition and its toxicity.

Increasing the content of these components above the maximum limit increases the washing time due to incomplete degreasing of the surface.

5 11173136

Thus, the proposed composition of optical parts, as a result, allows to reduce the volatility of which is detergent, the percentage of the yield of suitable parts of the tool, to improve the quality of washing - is increased by 40%.

Claims (1)

1. DETERGENT FOR CLEANING PRECISION PARTS FROM MINERAL- NEW OILS AND FATS, containing a surfactant and acetone, characterized in that, in order to improve the quality of cleaning parts and reduce the volatility of the product, it additionally contains diethylene glycol in the following case Research Institute of Components, May. Diethylene glycol 20-50 Surface active society '3-5 Acetone Up to 100 2. The tool according to p. 1, from l and h a - further that in as e surfactant it contains sodium alkanesulfonate or polyethylene glycol ether, synthetic fatty alcohols fraction C ^ _o ^C (3 · ειεζιιιns> 1 1117313