Antirust agent composition and antirust method using the same

A composition and technology of rust inhibitor, applied in the field of rust inhibitor composition, can solve the problems of corrosion, low rust inhibitor, low toxicity and the like

Inactive Publication Date: 2013-10-23
DAI ICHI KOGYO SEIYAKU CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the composition proposed in the above-mentioned Patent Document 1 is a rust preventive agent only for iron, and if it is a non-ferrous metal, corrosion occurs, so it cannot be used.
In addition, the composition proposed in the above-mentioned Patent Document 2 contains an alkali metal, which may corrode non-ferrous metals, and rust prevention residues will affect the finish of

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  • Antirust agent composition and antirust method using the same
  • Antirust agent composition and antirust method using the same

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Embodiment

[0034] Next, the present invention will be described based on examples and comparative examples, but the present invention is not limited to these examples. In addition, unless otherwise stated, the compounding ratio etc. are based on mass (mass part, mass %).

[0035] A rust preventive composition was prepared according to the formulation shown in Table 1 below, and the following evaluations were performed. The results are shown in Table 2.

[0036] [Table 1]

[0037]

[0038] 1. For iron rust resistance

[0039] A 50-fold dilution in water of each rust preventive composition was prepared as a rust preventive liquid. Spread cast iron powder (FC200) in a petri dish, add 2 ml of the obtained antirust solution dropwise to 2 g of the cast iron powder, check the state of rust at room temperature within 24 hours, and compare with the following criteria Rust resistance.

[0040] ◎: no rust

[0041] ○: less than 5% rust

[0042] △: 5% or more to less than 25% of rust

[00...

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Abstract

The invention provides an antirust agent composition and an antirust method using the same. The antirust agent composition comprises a aliphatic carboxylic acid represented by general formula (1), and a aromatic carboxylic acid represented by general formula (2), and is formed by using organic base through adjustment in the way of changing pH to be in the range of 5 to 10, and can be used both for ferrous metal raw materials and non-ferrous metal raw materials. The antirust performance and finish machining performance are excellent, and an antirust method can be provided by using the antirust agent composition. R1-(COOH)n (1), in the formula (1), R1 represents an alkyl group in the form of a straight chain or branches which acts as an alkyl group, an alkenyl group or an alkanol group with the carbon number being 1 to 17, and n represents a number of 1 to 3. R2-(COOH)n (2), in the formula (2), R2 represents an aromatic alkyl group, and n represents a number of 1 to 3.

Description

technical field [0001] The invention relates to a rust preventive composition and a rust preventive method using the same. Background technique [0002] Conventionally, various water-soluble rust preventives have been proposed and utilized as water-soluble rust preventives. For example, water-soluble rust preventives using inorganic salts such as chromate, nitrite, and phosphate are known. However, chromate has been pointed out to be highly toxic, nitrite has been pointed out to be carcinogenic, and phosphate has been pointed out to cause eutrophication of rivers, lakes, etc. Therefore, rust preventive agents not containing the above-mentioned inorganic salts have been proposed (for example, Patent Document 1 and Patent Document 2). [0003] However, the composition proposed in the above-mentioned Patent Document 1 is a rust preventive agent targeting only iron, and it cannot be used because corrosion occurs if it is a non-ferrous metal. In addition, the composition propos...

Claims

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Application Information

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IPC IPC(8): C23F11/14C23F11/06
Inventor 锅岛敏一
Owner DAI ICHI KOGYO SEIYAKU CO LTD
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