CS239382B1 - Means for releasing screw connections - Google Patents

Abstract

A liquid hydrocarbon-based screw release agent, comprising 50 to 95 parts by weight of hydrocarbons with a boiling point of 50 to 380 °C/101.3 kPa, 5 to 50 parts by weight of at least one aliphatic ketone with 3 to 6 carbon atoms and/or an aliphatic ester with 4 to 8 carbon atoms, and 0.1 to 5 parts by weight of a nonionic surfactant. The agent can be applied as a spray or by coating.

Description

(54) Release means for screw connections

2

Liquid hydrocarbon-based screw joint release agent consisting of 50 to 95 wt. parts of hydrocarbons boiling at 50 to 380 ° C / 101.3 kPa, from 5 to 50 wt. parts of at least one aliphatic ketone having 3 to 6 carbon atoms and / or an aliphatic ester having a carbon number of 4 to 8, from 0.1 to 5 wt. parts of a nonionic surfactant.

The composition can be applied by spray or by coating.

SUMMARY OF THE INVENTION The present invention provides a screw release composition based on commercially available components, wherein the composition has an enhanced effect.

Much of the construction joints are made using threaded joints, whether they are self-tapping screws or nuts. As a result of carotid as well as fouling, these joints loosen easily and some liquid means such as diesel, kerosene, alley and the like are used to ease the release. However, these compositions do not have sufficient efficiency, in particular when the seams are wet or clogged with mechanical impurities. In such cases, multiple application of the composition and relatively long period of time are required. Without the use of such means, loosening the joints is physically very strenuous, there is often a deterioration of the joint and sometimes of the construction material and the risk of accidents at work is also increased.

The liquid hydrocarbon-based screw-release agent according to the invention, which consists of 50 to 95 wt. % of hydrocarbons having a boiling point of 50 to 380 ° C / / 101.3 kPa; parts of at least one aliphatic ketone having 3 to 8 carbon atoms and / or an aliphatic ester having a carbon number of 4 to 8, from 0.1 to 5 wt. parts of a nonionic surfactant.

Among the main advantages of the composition according to the invention are, in particular, an increased effect of increased sluggishness, a good wetting effect and the possibility of application even in the presence of hydrophilic as well as hydrophobic materials. The composition is an economically undemanding and commercially available component.

Suitable paraffinic hydrocarbons may be suitable distillation slices or fractions, such as naphtha, kerosene, optionally enriched in certain boiling point hydrocarbons.

Of the aliphatic ketones, acetone and acetone are preferred. methylethylketone, but so-called methylethylketone may also be used. "Acetone diluent". Among the esters, preference is given in particular to the use of acetic acid esters as well as ethyl acetate, butyl acetate and amyl acetate. Suitable nonionic surfactants are any commercially available nonionic surfactants.

The composition may be applied by coating the respective portion of the threads, or by spraying in the case of a spray package.

Some embodiments of the invention are apparent from the following examples.

EXAMPLE

A homogeneous solution is prepared consisting of 500 g of kerosene, 500 g of acetone and 20 g of a nonionic surfactant based on ethoxylated higher fatty alcohols (Slovasol SF 3). The capability of this device is tested on standardly corroded threads with a diameter of 10 mm M 3. The thread is immersed in the device at a depth of 1 mm for 30 seconds. The height of the solution was measured to be 9 millimeters.

Example 2

The wicking is tested with kerosene alone under the same conditions. The wicking height is measured at 5 mm.

Example 3

A solution of substances containing 500 grams of kerosene, 120 g of acetone, 120 g of ethyl acetate and 12 g of a surfactant (reaction product of castor oil etotxylation - commercial product Slovasol EL) is prepared. .

Example 4

The thread release agent is prepared from 600 g of kerosene, 200 g of petroleum ether (boiling point 60-80 ° C / 101.3 kPa) 200 g of acetone diluent and 20 g of surfactant (ethoxylated octadecylamine). a wicking of 8.5 mm was observed.

Claims (1)

SUBSTANCE A device for the release of screw connections based on liquid hydrocarbons, characterized in that it consists of 50 to 95 wt. parts of hydrocarbons having a boiling point of 50 to 380 ° C / 101.3 kPa, from 5 to 50 wt. FISHING at least one C 3 to C 6 aliphatic ketone and / or an aliphatic C 4 to C 8 aliphatic ester of 0.1 to 5 wt. parts of a nonionic surfactant.