JP2791359B2 - Rust remover for copper metal - Google Patents
Rust remover for copper metalInfo
- Publication number
- JP2791359B2 JP2791359B2 JP21323789A JP21323789A JP2791359B2 JP 2791359 B2 JP2791359 B2 JP 2791359B2 JP 21323789 A JP21323789 A JP 21323789A JP 21323789 A JP21323789 A JP 21323789A JP 2791359 B2 JP2791359 B2 JP 2791359B2
- Authority
- JP
- Japan
- Prior art keywords
- copper metal
- acid
- rust remover
- rust
- copper
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 この発明は銅金属用除錆剤に関する。Description: TECHNICAL FIELD The present invention relates to a rust remover for copper metal.
この明細書において銅金属とは銅および各種の銅合金
（例えば、黄銅やCu−Fe,Cu−Sn,Cu−Ni系リードフレー
ム材等）を意味する。In this specification, copper metal means copper and various copper alloys (for example, brass, Cu-Fe, Cu-Sn, Cu-Ni-based lead frame materials, etc.).
従来の技術 従来から、銅金属製の熱交換器用パイプ、プリント基
板および電気電子部品用リードフレーム等の除錆剤とし
ては、鉱酸（塩酸、硫酸および硝酸等）、チオグリコー
ル酸およびその塩類（英国特許第807172号明細書および
特公昭40−16771号公報参照）または２−アミノエチル
メルカプタンおよびその塩類（特開昭61−25186号公報
参照）等が使用されている。2. Description of the Related Art Conventionally, mineral acid (hydrochloric acid, sulfuric acid and nitric acid, etc.), thioglycolic acid and its salts (such as hydrochloric acid, sulfuric acid and nitric acid) have been used as rust removers for copper metal heat exchanger pipes, printed circuit boards and lead frames for electric and electronic parts. For example, British Patent No. 807172 and Japanese Patent Publication No. 40-16771) or 2-aminoethylmercaptan and its salts (see Japanese Patent Application Laid-Open No. 61-25186) are used.
しかしながら、鉱酸は酸化スケールを効果的に除去す
るが、銅金属自体に対する腐食性が大きいので、酸化度
合の異なる被処理体や高い寸法精度が要求される製品等
の除錆処理には不適である。However, although mineral acid effectively removes oxide scale, it is highly corrosive to copper metal itself, so it is not suitable for rust removal treatment of workpieces with different degrees of oxidation and products that require high dimensional accuracy. is there.
チオグリコール酸およびその塩類は優れた酸化スケー
ル除去性を示すと共に銅金属に対する腐食性が小さいと
いう特性を有するが、強い悪臭によって作業環境を著し
く悪化させるだけでなく、除錆後の不十分な水洗によっ
て非処理面が再酸化されやすく、また、アルミニウムに
対する腐食性が強いためにアルミニウム製部品が共存す
る銅金属製の製品や部品（例えば、アルミニウム製の電
極やリード線等をモールディング内部に保有する小型化
電子部品等）の除錆処理には利用し難いという問題があ
る。Thioglycolic acid and its salts have excellent oxidized scale removal properties and low corrosiveness to copper metal.However, not only the working environment is markedly deteriorated by strong odor, but also insufficient washing with water after rust removal. The non-processed surface is easily re-oxidized, and the product is made of a copper metal and has aluminum components coexisting due to its strong corrosiveness to aluminum (for example, holding aluminum electrodes and lead wires inside the molding) There is a problem that it is difficult to use for rust removal treatment of miniaturized electronic parts.
さらに、２−アミノエチルメルカプタンおよびその塩
類は臭気の点では作業衛生上問題はないが、それ以外の
点では、チオグリコール酸やその塩類の場合と同様の問
題がある。Further, 2-aminoethyl mercaptan and salts thereof have no problem in terms of odor in terms of occupational hygiene, but otherwise have the same problems as thioglycolic acid and salts thereof.
発明が解決しようとする課題 この発明は、従来から使用されている銅金属用除錆剤
の上記の問題点を有さず、汎用性の高い銅金属用除錆剤
を提供するためになされたものである。Problem to be Solved by the Invention The present invention does not have the above-mentioned problems of the conventionally used copper metal rust remover, and has been made to provide a highly versatile copper metal rust remover. Things.
課題を解決するための手段 即ちこの発明は、次式： で表わされるマレイン酸モノアミドを含有する銅金属用
除錆剤に関する。Means for Solving the Problems That is, the present invention provides the following formula: The present invention relates to a copper metal rust remover containing maleic acid monoamide represented by the formula:
マレイン酸モノアミドは、例えば無水マレイン酸に乾
燥アンモニアガスを吹き込むことによって容易に調製さ
れる（ケミカル・アブストラクツ、1949年、第579頁参
照）。Maleic monoamides are readily prepared, for example, by blowing dry ammonia gas into maleic anhydride (see Chemical Abstracts, 1949, p. 579).
マレイン酸モノアミドの使用濃度は特に限定的ではな
いが、通常は0.5〜10重量％である。The concentration of maleic acid monoamide used is not particularly limited, but is usually 0.5 to 10% by weight.
本発明による除錆剤の溶媒としては通常は水を使用す
るが、除錆後の水洗性を向上させるために、メタノー
ル、エタノール、イソプロピルアルコール等の水溶性有
機溶剤を適宜併用してもよい。Water is usually used as a solvent for the rust removing agent according to the present invention, but a water-soluble organic solvent such as methanol, ethanol, or isopropyl alcohol may be appropriately used in order to improve the water washability after rust removal.
本発明による除錆剤には所望により常套の添加剤、例
えば、除錆力を高めるために酒石酸、クエン酸、シュウ
酸等の有機酸を適宜配合してもよい。The rust remover according to the present invention may optionally contain a conventional additive, for example, an organic acid such as tartaric acid, citric acid, oxalic acid or the like in order to enhance the rust removing power.
上記除錆剤を用いて処理した銅金属類は水洗後、自然
乾燥するのみで十分であるが、作業工程の都合により、
乾燥手段及び／または有機溶剤を用いて強制乾燥しても
よい。After washing with water, the copper metals treated with the above-mentioned rust-removing agent are naturally enough to be naturally dried, but due to the work process,
Forced drying may be performed using a drying means and / or an organic solvent.
以下、本発明を実施例によって説明する。 Hereinafter, the present invention will be described with reference to examples.
「実施例１」 50×25×1mmの銅版をホットプレート上に置き、約250
℃で30分間空気中で加熱した。“Example 1” A copper plate of 50 × 25 × 1 mm was placed on a hot plate, and about 250 mm.
Heated in air at 300C for 30 minutes.
銅板はいずれもその表面に赤紫色〜赤褐色の被膜を形
成した。この銅板を除錆剤としてマレイン酸モノアミド
の５重量％水溶液を用い、20℃で10,30及び60秒間浸漬
した時の除錆効果を評価した。比較のため５重量％塩酸
水溶液、５重量％硝酸水溶液、５重量％２−アミノエチ
ルメルカプタン塩酸塩を用いて、除錆試験をした。試験
結果を表−１に示す。Each copper plate formed a reddish purple to reddish brown film on its surface. Using a 5% by weight aqueous solution of maleic acid monoamide as a rust remover, the copper plate was immersed at 20 ° C. for 10, 30 and 60 seconds to evaluate the rust removal effect. For comparison, a rust removal test was performed using a 5% by weight aqueous hydrochloric acid solution, a 5% by weight aqueous nitric acid solution, and a 5% by weight 2-aminoethyl mercaptan hydrochloride. Table 1 shows the test results.
「実施例２」 50×25×1mmの銅板と50×25×1mmのアルミニウム板を
マレイン酸モノアミドの５重量％水溶液を用い、20℃で
24時間浸漬し、それぞれの腐食を観察した。比較のため
５重量％塩酸水溶液、５重量％硝酸水溶液、５重量％２
−アミノエチルメチルカプタン塩酸塩を用いて試験し
た。試験結果を表−２に示す。 Example 2 A 50 × 25 × 1 mm copper plate and a 50 × 25 × 1 mm aluminum plate were prepared by using a 5% by weight aqueous solution of maleic acid monoamide at 20 ° C.
It was immersed for 24 hours, and each corrosion was observed. For comparison, a 5% by weight aqueous solution of hydrochloric acid, a 5% by weight aqueous solution of nitric acid, 5% by weight of 2%
-Tested with aminoethylmethylcaptan hydrochloride. Table 2 shows the test results.
発明の効果 本発明の除錆剤を用いることにより、銅合金類とアル
ミニウムが共存する非処理体に対しても、アルミニウム
を腐食することなく酸化膜を除去することができる。従
って、特に小型化が進んでいる電子部品の腐食及び変色
の危険性を懸念することなく酸化膜除去を行うことがで
きる。 Effect of the Invention By using the rust remover of the present invention, an oxide film can be removed without corroding aluminum even on a non-treated body in which copper alloys and aluminum coexist. Therefore, it is possible to remove the oxide film without worrying about the danger of corrosion and discoloration of an electronic component whose size is particularly reduced.
Claims (1)
除錆剤。A rust remover for copper metal containing maleic acid monoamide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21323789A JP2791359B2 (en) | 1989-08-18 | 1989-08-18 | Rust remover for copper metal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21323789A JP2791359B2 (en) | 1989-08-18 | 1989-08-18 | Rust remover for copper metal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0375390A JPH0375390A (en) | 1991-03-29 |
| JP2791359B2 true JP2791359B2 (en) | 1998-08-27 |
Family
ID=16635794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21323789A Expired - Fee Related JP2791359B2 (en) | 1989-08-18 | 1989-08-18 | Rust remover for copper metal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2791359B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020073072A (en) * | 2001-03-14 | 2002-09-19 | (주)인비테크 | CD-R(Include CD)surface And CD CASE surface using union AD. |
| JP4629277B2 (en) * | 2001-07-19 | 2011-02-09 | 日立金属株式会社 | Plug-in fittings |
| JP4845639B2 (en) * | 2006-08-23 | 2011-12-28 | 株式会社サンコー | Corrugated pipe insertion fitting |
| CN103103544A (en) * | 2013-01-06 | 2013-05-15 | 徐一达 | Rust remover and rust-removal method for copper parts |
| CN105177606A (en) * | 2015-07-21 | 2015-12-23 | 安徽江威精密制造有限公司 | Copper piece rust remover and preparing method and application of copper piece rust remover |
| CN105401158B (en) * | 2015-12-09 | 2017-10-31 | 上海三汰包装材料有限公司 | Copper product rust remover and preparation method thereof |
| CN106637236A (en) * | 2016-10-19 | 2017-05-10 | 广西钱隆投资管理有限公司 | Domestic rust remover |
-
1989
- 1989-08-18 JP JP21323789A patent/JP2791359B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0375390A (en) | 1991-03-29 |
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