JP3226575B2 - Draining detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning agent for removing and adhering water adhering to metal or non-metal processing parts such as electronic parts, plating parts and glass parts.

[0002]

2. Description of the Related Art Electronic parts, plating parts, glass parts, etc.
2. Description of the Related Art In the process of manufacturing metal and non-metal processing parts, various water treatments such as cleaning with water for removing stains and the like are performed. However, water adhering in these steps must be quickly and accurately removed to prevent rust, stains, and the like. As one of the methods, there is a method using a chlorinated hydrocarbon compound (see, for example,
114501).

An apparatus for carrying out such a method generally comprises, as shown in FIG. 1, 1) a draining water separation tank, 2) a boiling bath cleaning tank, 3) a cold bath cleaning tank, and 4) a steam cleaning tank. In 1), water is removed with a draining agent in 1), and the attached draining agent is washed and dried in 2) to 4). The object to be cleaned moves in the direction of arrow A.

The draining agent used in 1) is a chlorinated hydrocarbon compound to which a stabilizer and a surfactant are added to improve draining performance. However, in the conventional surfactants for draining water (for example, a primary amine having 6 to 12 carbon atoms such as laurylamine caproate and one having 6 to 10 carbon atoms).
In general, when draining is performed in a heated state, or when a draining agent is mixed in the tanks 2) to 4), the final concentration is generally 4). System) Since it decomposes thermally and causes troubles such as a decrease in pH, a heat-stable drug has been demanded.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a draining detergent which can be used stably at high temperatures even in a draining / drying apparatus.

[0006]

DISCLOSURE OF THE INVENTION The present invention is directed to a draining detergent composition comprising a chlorinated hydrocarbon compound and a salt of dicyclohexylamine and an aliphatic monocarboxylic acid added in an amount of 0.01 to 5.0% by weight. It is.

The chlorinated hydrocarbon compounds include methyl chloroform, trichloroethylene and tetrachloroethylene.

[0008] Aliphatic carboxylic acids include those having 6 carbon atoms.
To 12, such as, but not limited to, caproic acid, isocaproic acid, caprylic acid, decanoic acid and lauric acid. However, caproic acid and caprylic acid are preferable from the viewpoint of industrially stable supply. A salt of dicyclohexylamine and an aliphatic monocarboxylic acid functions as a surfactant.

This surfactant is preferably used in an amount of 0.01 to 5.0% by weight, based on the stabilized chlorinated hydrocarbon compound. In the case of treatment, drainage becomes insufficient and causes troubles such as spots and rust. On the other hand, if it is excessive, it may cause a cleaning failure in the step of washing and drying the draining agent in the tanks 2) to 4), which causes a problem. Further, it is economically disadvantageous because the effect of the excessive addition cannot be obtained.

[0010]

EXAMPLES The present invention will be described more specifically with reference to examples and comparative examples, and the effects thereof will be clarified.

<Test-1> Heat stability test: 150 ml of a draining detergent was placed in a 300 ml Erlenmeyer flask, refluxed for 40 hours, and the change in pH was measured.

<Test-2> Draining test ... 50 lighter parts (nickel-plated, made of ingot iron) are placed in a stainless steel wire mesh basket, immersed in a draining detergent (liquid temperature 25 ° C) for 30 seconds, and drained. The situation was checked visually.

[0013]

Example 1 <Test-1> and <Test-2> were attempted by adding 0.5% of dicyclohexylamine caprylate to methyl chloroform.

[0014]

Example 2 A test was conducted in the same manner as in Example 1 using trichloroethylene.

[0015]

Example 3 Example 1 using tetrachloroethylene
The test was performed in the same manner as in the above.

[0016]

Comparative Example 1 5.0% of laurylamine caproate was added to methyl chloroform, and <Test-1> and <Test-
2>.

[0017]

Comparative Example 2 A test was conducted in the same manner as in Comparative Example 1 using trichloroethylene.

[0018]

Comparative Example 3 Comparative Example 1 Using Tetrachloroethylene
The test was performed in the same manner as in the above.

The results and evaluation are shown in Table 1.

[0020]

[Table 1]

In Table 1, the mark ○ indicates “good” and the mark x indicates “poor”.

[0022]

As is clear from Table 1, the cleaning composition according to the present invention has a small pH change even in a heat stability test, maintains a nearly neutral pH value, is stable, and has good drainage. Indicates the situation. These results are in contrast to the results of the chlorinated hydrocarbons (Comparative Examples 1 to 3) which show a remarkably acidic pH value in the thermal stability test.

[Brief description of the drawings]

FIG. 1 is a schematic side view of an example of a cleaning device using the drainage cleaning composition of the present invention. 1: draining water separation tank 2: boiling bath cleaning tank 3: cold bath cleaning tank 4: steam cleaning tank

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B01D 11/00-12/00 C11D 1/00-19/00

Claims (1)

(57) [Claims] 1. A drainer characterized in that 0.01 to 5.0% by weight of a salt of dicyclohexylamine and an aliphatic monocarboxylic acid having 6 to 12 carbon atoms is added to a chlorinated hydrocarbon compound. Detergent composition.