JP2009203436A - Detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detergent composition simultaneously removing not only a mineral oil but also a deposit, such as abrasion powder or dust, attached to the surface of a steel plate. <P>SOLUTION: The detergent composition contains at least two surfactants selected from the group consisting of (A-1) an anionic surfactant having a 10-18C linear or branched alkyl group, (A-2) an ampholytic surfactant having a 10-18C linear or branched alkyl group, and (A-3) a nonionic surfactant having a 10-18C linear or branched alkyl group and also contains (B) a glycol solvent. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

The present invention relates to a degreasing detergent composition before painting, and more specifically, it is excellent in detergency and is used for foam washing, and can be suitably used for degreasing washing before painting with a small amount of chemical use.

For the degreasing of the coating pretreatment, a so-called cleaning thinner, which contains a solvent such as toluene and xylene as a main component and contains a large amount of volatile organic compounds, is used. For example, Patent Document 1 reports a blend containing mainly toluene as an active component and an active methylene-containing organic compound and oxime.

  In the case of using an aqueous cleaning agent, it is common to perform hot dipping cleaning with an alkaline cleaning agent mainly composed of a silicate and a surfactant. It is necessary to install a new immersion tank.

  As an example of the above, a degreasing agent comprising two or more kinds of alkali builder and a nonionic surfactant, wherein the two or more kinds of alkali builder is at least one kind of alkali silicate. 2 is reported.

  A detergent composition containing a surfactant or an amine has been reported in Patent Document 3 in which a betaine surfactant and a cyclohexylamine compound and / or a phenyl ether compound are used as active ingredients.

Further, at least one selected from the group consisting of polyalkylene of monoalkylamine or N-alkylpropylenediamine and polyoxyethylene adduct of monoalkylamide, alkyldimethylamine oxide, alkyldi (aminomethyl) glycine, linear There is Patent Document 4 in which a formulation containing at least one selected from the group consisting of sodium dodecylbenzenesulfonate and beadine lauryldimethylaminoacetate is reported.
JP 2002-265195 A JP 2005-320598 A JP-A-5-247678 JP 2003-119596 A

The target is a cleaning composition in which abrasion powder or dust generated during processing adheres to the steel plate surface as well as mineral oil, and these deposits can be removed simultaneously with the cleaning agent.

Among the combinations of surfactants selected from (A-1), (A-2), and (A-3), the present inventors indicate that the combination suitable for degreasing varies depending on the hydrogen ion concentration. I found it.

Moreover, it discovered that the form of foam became favorable by mix | blending (B) glycol solvent.

This invention is derived | led-out by said knowledge, and provides the cleaning composition shown to the following item 1 to item 2.
Item 1. (A-1) An anionic surfactant having a linear or branched alkyl having 10 to 18 carbon atoms, or
(A-2) an amphoteric surfactant having a linear or branched alkyl having 10 to 18 carbon atoms,
(A-3) containing at least two kinds of nonionic surfactants having a linear or branched alkyl having 10 to 18 carbon atoms,
(B) A cleaning composition comprising a glycol solvent.
Claim 2. Item 2. The cleaning composition according to Item 1, which is used for foam cleaning and used for degreasing steel sheets.

The cleaning composition of the present invention contains at least two or more of (A-1) an anionic surfactant or (A-2) an amphoteric surfactant and (A-3) a nonionic surfactant. B) By containing a glycol solvent, it has a performance capable of simultaneously removing not only mineral oil but also abrasion powder and dust adhering to the steel plate surface.

The cleaning composition of the present invention comprises:
(A-1) an anionic surfactant having a linear or branched alkyl having 10 to 18 carbon atoms,
(A-2) an amphoteric surfactant having a linear or branched alkyl having 10 to 18 carbon atoms,
(A-3) a nonionic surfactant having a linear or branched alkyl having 10 to 18 carbon atoms,
Containing at least two or more
(B) It contains a glycol solvent. Hereinafter, each component will be described.

(A) component (A-1) component is alkyl sulfate, alkylbenzene sulfate, alkyl polyethylene oxide ether sulfate, alkyl polyethylene oxide acetate, etc.
(A-2) component includes alkyldimethylamine oxide, alkyldimethylacetate betaine, alkyldipropylacetate betaine, alkylimidazolinium betaine, alkyldi (aminomethyl) glycine,
Examples of the component (A-3) include alkyl glucosides, and two or more of these components may be selected and used.

(B) Component (B) component includes butyl diglycol, ethyl diglycol, methyl diglycol, propyl diglycol, etc., but from these components, one kind may be used alone, Two or more types may be selected and used. Moreover, these compounding quantities can improve a foam form with a small compounding of about 1%.

The cleaning composition of the present invention is suitable for cleaning not only mineral oil but also abrasion powder and dust adhering to the steel sheet surface, and is economical in that it uses a small amount of chemicals when used in a foamed form. In addition, there are advantages from the economic and environmental aspects, such as the fact that it contains almost no volatile organic compounds released into the atmosphere, and the amount of chemicals used is small, so that the amount of chemicals discharged to the environment is reduced.

Hereinafter, examples of the present invention will be described in more detail. However, the present invention is not limited to these examples.

  Mixing was conducted according to Table 1, and if necessary, the mixture was heated and dissolved to obtain a blended composition.

“%” Shown in Table 1 with respect to Examples 1 to 4 and Comparative Examples 1 to 7 represents% by weight.

Table 2 shows the details of the raw materials used in Examples and Comparative Examples.

  With respect to Examples 1 to 4 and Comparative Examples 1 to 7, the pH, degreasing property, actual machine test, and foaming property were tested as follows.

<PH>
・
Measure the hydrogen ion concentration of a 5% chemical solution with a pH meter.

<Degreasing>
・
Apply liquid paraffin containing oil-soluble pigment (zudan) 0.1% to SPCC steel plate (25mm x 50mm) degreased with solvent.-
Immerse the steel plate in 5% chemical solution and leave it for 10 minutes.
After processing, take out the steel plate and let it air dry
Rinse the remaining oil on the steel plate with chloroform and increase the volume.
Judgment is based on the degree of coloration of the chloroform solution (control is a sample degreased with toluene)
・
If the color is weaker than the control, ◎, if it is similar to the control, ○, if the color is stronger than the control, ×

<Real machine test>
・
Degreasing the steel before painting by the customer
When metal powder is almost removed ◎, when slightly removed ○, when it can not be removed ×

<Foaming properties>
・
Spray 5% chemical solution with the simple foam cleaning device shown in Fig. 1.
Judging by the appearance of bubbles
If the foam shape is good ◎, if the foam shape is slightly good ○, if the foam shape is bad, ×

<Results and discussion>
As is clear from Table 3, it contains at least two or more selected from (A-1) an anionic surfactant, (A-2) an amphoteric surfactant, and (A-3) a nonionic surfactant. Depending on the combination of surfactants, the combination suitable for degreasing varies depending on the hydrogen ion concentration. Moreover, it turns out that the form of a foam becomes favorable by mix | blending (B) glycol solvent.

The cleaning composition of the present invention can remove not only mineral oil but also deposits such as abrasion powder and dust adhering to the steel sheet surface.

The present invention is considered to be applicable not only to the degreasing of steel materials but also to the cleaning of floors and walls of metal processing factories and automobile maintenance factories where mineral oil scatters, metal processing machines and the like. Furthermore, since the amount of medicine used is small, the amount of medicine discharged to the environment is reduced, so that it is suitable for cleaning from the viewpoint of economy and the environment, and is also suitable for cleaning a portion that is difficult to clean with water.

In order to confirm the foamability, an external view of the simple foam cleaning apparatus used is attached.

Claims (2)

(A-1) an anionic surfactant having a linear or branched alkyl having 10 to 18 carbon atoms or (A-2) an amphoteric surfactant having a linear or branched alkyl having 10 to 18 carbon atoms (A-3) A detergent composition comprising at least two or more kinds of nonionic surfactants having a linear or branched alkyl having 10 to 18 carbon atoms, and (B) a glycol solvent. object. The cleaning composition according to claim 1, which is used for foam cleaning and used for degreasing steel sheets.

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