JPS6033400A - Electrolytic releasing agent for metal on stainless steel - Google Patents
Electrolytic releasing agent for metal on stainless steelInfo
- Publication number
- JPS6033400A JPS6033400A JP14299983A JP14299983A JPS6033400A JP S6033400 A JPS6033400 A JP S6033400A JP 14299983 A JP14299983 A JP 14299983A JP 14299983 A JP14299983 A JP 14299983A JP S6033400 A JPS6033400 A JP S6033400A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- metal
- aliphatic
- alkali metal
- electrolytic
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/10—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern
- H05K3/20—Apparatus or processes for manufacturing printed circuits in which conductive material is applied to the insulating support in such a manner as to form the desired conductive pattern by affixing prefabricated conductor pattern
Landscapes
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
本発明はステンレス上の金＃ｌｉ電解剥離液に関し、更
に詳しくはステンレス製の治具などの表面に被着されて
いる金属を、ｉｕ電気的溶解または剥離さセる電解液に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gold #li electrolytic stripping solution on stainless steel, and more specifically, the present invention relates to an electrolytic stripping solution for gold #li on stainless steel, and more specifically, it is used to remove metal deposited on the surface of a stainless steel jig or the like by IU electrical melting or stripping. This relates to electrolytes.
銅めっきされたステンレス製の治具の剥離は硝酸を用い
て化学的に銅を溶解して行われているが、化学的に溶解
する方法は、作業中に亜硝酸ガスの発生が激しく、その
上に浴中の金属成分の増加によって剥離能力が低下い、
剥離に長時間を要することになる。また、その他に治具
のステンレスの侵食がなく、電気的に金属を溶解する剥
Ｐ）ｌｋ浴がキレート化合物を含むアルカリ性の浴で開
発されている。しかしながら、今まで開発されたキレー
ト化合物を含むアルカリ性の剥離浴は金属の溶存量が増
加してくるとキレート剤の効果が弱くなり、完全に剥離
が行えず、また金属の水酸化物の沈澱が多くなる欠点が
ある。それ故に、完全に剥離ができて、金属の水酸化物
の沈澱が少ない電解剥離浴はまだ開発されていなかった
。そこで本発明者は工業的に有利で、金属水酸化物の沈
澱がなく完全に剥離ができ、しかも治具のステンレスの
侵食がない電解剥離浴の開発研究を行った結果、本発明
を見出ずに至った。Stripping of copper-plated stainless steel jigs is done by chemically dissolving the copper using nitric acid, but the chemical dissolution method generates a lot of nitrous gas during the work, Moreover, the stripping ability decreases due to the increase in metal components in the bath.
Peeling will take a long time. In addition, an alkaline bath containing a chelate compound has been developed that does not corrode the stainless steel of the jig and electrically dissolves the metal. However, in the alkaline stripping baths containing chelate compounds that have been developed so far, as the amount of dissolved metal increases, the effect of the chelating agent weakens, and complete stripping cannot be performed, and metal hydroxides may precipitate. There are many drawbacks. Therefore, an electrolytic stripping bath capable of complete stripping and with less precipitation of metal hydroxides has not yet been developed. Therefore, the present inventor conducted research to develop an electrolytic stripping bath that is industrially advantageous, allows complete stripping without precipitation of metal hydroxide, and does not corrode the stainless steel of the jig, and as a result, discovered the present invention. I arrived at it.
本発明は硝酸、アルカリ金属及びアルカリ土類金属の硝
酸塩及び硝酸アンモニウムからなる群から選ばれた少な
くとも１ｍを２０〜５００Ｆ／］及びＢＷ 肪族モノ−
、ジー及びポリ−カルボン酸及び脂肪族オキシカルボン
酸及びこれらのアルカリ金属塩及びアンモニウム塩の少
なくとも１種のカルボン酸を２０〜ｓｏｏｇ、、’ｘ含
有する水溶液からなることを特徴とするステンレス上の
金属Ｗｌ電解剥離液本発明に係る電解剥離液はステンレ
ス上に被着された銅、ニッケル、半田等の７Ｌｔ 屏刹
離に適用し得るものであり、例えばプリント基板のめつ
きに使用されている銅、ニッケルまたは半田めっきされ
たステンレス製の治具の電解剥離において、治具を陽極
、ステンレス板または銅板を陰極にして、帽、ニッケル
または半田の剥離を行うものである。The present invention provides at least 1 m of nitric acid, nitrates of alkali metals and alkaline earth metals, and ammonium nitrate of 20 to 500 F/] and BW aliphatic mono-
, polycarboxylic acids, aliphatic oxycarboxylic acids, and alkali metal salts and ammonium salts thereof. Metal Wl Electrolytic Stripping Solution The electrolytic stripping solution according to the present invention can be applied to 7Lt stripping of copper, nickel, solder, etc. deposited on stainless steel, and is used, for example, in plating printed circuit boards. In electrolytic stripping of copper, nickel, or solder-plated stainless steel jigs, the cap, nickel, or solder is stripped using the jig as the anode and the stainless steel plate or copper plate as the cathode.
また銅のみを剥離した浴に関しては、溶解した銅を陰極
上に析出させ、回収することができる電解Ｍ：’Ｊ ｌ
’＋ｌｔ 浴’Ｕ モｉｉ＞ ル。Regarding the bath in which only copper is removed, the electrolytic M: 'J l
'+lt Bath'U Moii> Le.
本発明のＹｔＬ解刹ｈ１［液の上記２梅の各成分及び組
成について以下に詳述する。The components and compositions of the above two components of the YtL solution h1 of the present invention will be described in detail below.
第１の成分は硝酸、アルカリ金属及びアルカリ土類金属
の硝酸塩及び硝酸アンモニウムからなる群から選ばれた
少なくとも１種（以下硝酸塩類という）である。The first component is at least one member selected from the group consisting of nitric acid, alkali metal and alkaline earth metal nitrates, and ammonium nitrate (hereinafter referred to as nitrates).
上記の硝酸塩類に配合するん２の成分は、脂肪族モノ−
、ジー及びポリ−カルボン酸及び脂肪゛族オキシカルボ
ン酸のアルカリ金属及びアンモニウム塩の少なくとも１
種（以下カルボン酸類という）である。斯かるカルボン
酸類として、炭素数１〜６の脂肪族モノカルボン酸、炭
素数２〜５の脂肪族ジカルボン酸、炭素数８〜８の脂肪
族ポリカルボン酸及び炭素数２〜８の脂肪族オキシカル
ボン酸及び仁れらのアルカリ金属及びアンモニウムが特
に好適に使用される。Component 2 added to the above nitrates is an aliphatic monomer.
, di- and poly-carboxylic acids, and alkali metal and ammonium salts of aliphatic oxycarboxylic acids.
species (hereinafter referred to as carboxylic acids). Such carboxylic acids include aliphatic monocarboxylic acids having 1 to 6 carbon atoms, aliphatic dicarboxylic acids having 2 to 5 carbon atoms, aliphatic polycarboxylic acids having 8 to 8 carbon atoms, and aliphatic oxycarboxylic acids having 2 to 8 carbon atoms. Particular preference is given to using carboxylic acids and other alkali metals and ammonium.
銅、ニッケルまたは半田の電解刹飢に使用できるものは
数′多く存在するが中でも上記の如き硝酸またはナトリ
ウム、アンモニウム、カリウム等のアルカリ金属及びア
ルカリ土類金属の硝酸塩のいずれか１押または２種以上
の水溶液が良好である。There are many substances that can be used for electrolytic depletion of copper, nickel, or solder, but among them, one or two of the above-mentioned nitric acid or nitrates of alkali metals and alkaline earth metals such as sodium, ammonium, and potassium. The above aqueous solutions are good.
しかし、これらは治具のステンレスをも溶解又は侵食す
る。この様なステンレスの侵食を防止するために、いろ
いろな構造の有機化合物の中で特に上記の如きカルボン
酸類を配合することにより極めて優れた金属剥離効果が
ｊｄられると共に、ステンレスの侵食の防止のみでなく
、７１ｍ溶解した金属と錯化合物を作り水酸化物の沈澱
の生成をも防止することができる。However, these also dissolve or erode the stainless steel of the jig. In order to prevent such corrosion of stainless steel, by incorporating carboxylic acids such as those mentioned above among organic compounds of various structures, an extremely excellent metal stripping effect can be achieved, and it is also possible to prevent corrosion of stainless steel. 71M, it is possible to form a complex compound with the dissolved metal and prevent the formation of hydroxide precipitate.
木ｉ◇明の′ｆｒＬ解利１ｉＩｌ［： Ｆ戊に於て、」
二記の硝酸塩類は、２０ｆ／１！以下では剥磯浴の電気
抵抗が大きく、電気が流れ難いので、金属のＦ３解が困
難である。また、５００ｆ／Ａ’以上では電気は流れ易
くなるが、カルボン酸またはオキシカルボン酸塩の併用
でもステンレスの侵食が激しくなる。従って硝酸塩類の
使用範囲は、２０〜５００ｆ／ｌの範囲が好適である。Tree i◇Ming's 'frL solution 1iIl [: In the F 戊,''
The nitrates listed below are 20f/1! Below, the electrical resistance of the stripping bath is large and it is difficult for electricity to flow, so it is difficult to solve the F3 problem for metals. Moreover, at 500 f/A' or more, electricity flows easily, but stainless steel becomes severely eroded even when carboxylic acid or oxycarboxylate is used in combination. Therefore, the range of nitrates used is preferably 20 to 500 f/l.
上記、カルボン酸類は、２０！／（ｌ以下ではステラ１
／スの防食効果が無く、侵食が激しい。また、溶解金属
をキレート化するのに不十分で、浴中に沈澱物を生成す
る。８００１７１以上では硝酸塩の併用で溶解できない
物が多く、それ以上は不経済である。従って、上記、カ
ルホン酸類の使用範囲は２０〜８００ｆ／Ａ’の範囲が
好適である。The above carboxylic acids are 20! /(Stella 1 below l
/Stainless steel has no anti-corrosion effect and is subject to severe erosion. It is also insufficient to chelate dissolved metals and forms precipitates in the bath. Above 800171, many substances cannot be dissolved when nitrates are used in combination, and anything above this is uneconomical. Therefore, it is preferable that the above-mentioned carbonic acids be used in a range of 20 to 800 f/A'.
なお本発明の電解剥離液は上記の２成分を混合して水溶
液を調製した後、必要ならば水酸化アルカリ又は硝酸の
添加によりｐＨを３．０ないし６．０に調整して使用す
るのが好ましい。The electrolytic stripping solution of the present invention is prepared by mixing the above two components to prepare an aqueous solution, and then adjusting the pH to 3.0 to 6.0 by adding alkali hydroxide or nitric acid if necessary. preferable.
さらに、本発明の電解剥離液の特に大きい利点としては
（１）電解剥離中、有毒物質の生成が全くない事、（２
）溶解した金属の電解回収が可能である’ＪＴ、などの
安全管理、廃液処理に何らの問題を生じないことが挙げ
られる。Furthermore, the particularly great advantages of the electrolytic stripping solution of the present invention are (1) no generation of toxic substances during electrolytic stripping;
) JT, which enables electrolytic recovery of dissolved metals, does not cause any problems in safety management and waste liquid treatment.
以下に実施例及び比較例を挙げて本発明を説明する。The present invention will be explained below with reference to Examples and Comparative Examples.
実施例１〜５及び比較例１〜２ 下記の第１表に記載の浴組成の電解剥離液を作成した。Examples 1-5 and Comparative Examples 1-2 An electrolytic stripping solution having the bath composition shown in Table 1 below was prepared.
これらの電解剥離液につき銅の溶解率及びステンレスの
侵食率を測定し、第１表に示す結果を街を二。The dissolution rate of copper and the corrosion rate of stainless steel were measured for these electrolytic stripping solutions, and the results are shown in Table 1.
缶の溶解率は、表面積０．１２３ ａｍ２の円板を用い
、電流２ ＯＡ／ｄｍ”で１０分間ＷＬ解した時の溶＃
量と、電気化学的理論量を１００％として比較した。ス
テンレスは０．１ ａｍ２の８ＵＳ ８０４の板を使用
し、電流２ ＯＡ／ｃＬｍ”で８０分間電解した時の、
電解前後の重量差を電解前の重凰で割り侵食率としｊコ
。The dissolution rate of the can is the dissolution number when the can is melted by WL for 10 minutes at a current of 2 OA/dm using a disk with a surface area of 0.123 am2.
The amount was compared with the electrochemical theoretical amount as 100%. When using stainless steel plate of 0.1 am2 8US 804 and electrolyzing it for 80 minutes at a current of 2 OA/cLm,
Divide the weight difference before and after electrolysis by the weight before electrolysis to find the erosion rate.
第１表
実施例６〜８及び比較例８〜４
第２表に記載の浴組成の電解剥離液を作成し液のｐＨ値
を同表記載の如く調整して、これらの液につき銅の溶解
率及びステンレスの侵食率を測定した。Table 1 Examples 6 to 8 and Comparative Examples 8 to 4 Electrolytic stripping solutions having the bath compositions listed in Table 2 were prepared, and the pH values of the solutions were adjusted as described in the same table to dissolve copper in these solutions. The corrosion rate and corrosion rate of stainless steel were measured.
銅の溶解率は表面積０．１８ ａｍ”の銅板を用い、電
流２ ＯＡ／ｄｍ２で１０分間ｍ解し、ステンレスは０
、１ ａｍ２の８Ｕ８８０４の板を使用し、２０ Ａ／
ｄｍ２の電流で１５分間電解した。その時のそれぞれの
溶解率および侵食率を第２表に示す。The dissolution rate of copper was measured by using a copper plate with a surface area of 0.18 am'' and dissolving it for 10 minutes at a current of 2 OA/dm2.
, using 8U8804 board of 1 am2, 20 A/
Electrolysis was carried out for 15 minutes at a current of dm2. The respective dissolution rates and erosion rates at that time are shown in Table 2.
第 ２ 表
電解剥離浴のｐＨ値が上りで憚るにしたがってステンレ
ス鋼の侵食は少なくなるが、銅の溶解は悪くなる。従っ
て電解剥離浴としてｐＨ値は８．０〜６．０の範囲が好
ましい。Table 2 As the pH value of the electrolytic stripping bath increases, corrosion of stainless steel decreases, but dissolution of copper worsens. Therefore, the pH value of the electrolytic stripping bath is preferably in the range of 8.0 to 6.0.
実施例９〜１１
下記第８表に記載の浴組成のｔｒｉ解剥離剥離液成した
。Examples 9 to 11 A tri-removal solution was prepared having the bath composition shown in Table 8 below.
これらの電解剥離液につき、■銅めっきを８０μ施した
ステンレス治具 ■半田めっきを２０μ施したステンレ
ス治具 ■銅めつきを２０μ、その上に半田めっきを２
０μ施したステンレス治具■ニッケルめっき２０μを施
しｔこステンレス治具の４種類の試料を用いて電解剥離
を打つｔこ。得られた結果を第８表に示す。For these electrolytic stripping solutions, ■ Stainless steel jig with 80μ of copper plating ■ Stainless steel jig with 20μ of solder plating ■ 20μ of copper plating and 2 times of solder plating on top of it
Stainless steel jig with 0 μ plating ■ 20 μ nickel plating applied Electrolytic stripping using four types of stainless steel jig samples. The results obtained are shown in Table 8.
□いずれの試料に対しても、金属の溶解力及びステンレ
スの防食力共に良好であった。□For all samples, both metal dissolving power and stainless steel corrosion prevention power were good.
実施例１２〜１Ｂ
第４表に記載の浴組成の電解剥離液を作成し、飼めつき
を８０μ施したステンレス治具を陽極とし、上記の電解
剥離液で電解剥離を行ない、陰極板上に析出した銅の回
収効率をめた。その結果、第４表に示す結果を得た。Examples 12 to 1B An electrolytic stripping solution having the bath composition shown in Table 4 was prepared, a stainless steel jig coated with 80μ of fertilization was used as an anode, electrolytic stripping was carried out with the above electrolytic stripping solution, and the stripping was carried out on the cathode plate. The recovery efficiency of deposited copper was evaluated. As a result, the results shown in Table 4 were obtained.
第 ４ 表
以上述べｔコように、本発明の電解剥離液は、広範囲の
変形が可能であり、その処方、操作方法に於いて多種の
変形、変更を出来得るものである。Table 4 As stated above, the electrolytic stripping solution of the present invention can be modified over a wide range, and its formulation and operating method can be modified and changed in many ways.
（以 、Ｉ：）(Hereafter, I:)
Claims (1)
及び硝酸アンモニウムからなる群から選ばれた少なくと
も１種を２０〜５００ｆ／ｌ及び脂肪族モノ−、ジー及
びポリ−カルボン酸及び脂肪族オキシカルボン酸及びこ
れらのアルカリ金θ属塩及びアンモニウム塩の少なくと
も１種のカルボン酸を２０〜８００ｆ／ｌ含有する水溶
液からなることを特徴とするステンレス上の金ＪＭｔｔ
！解剥離液。 ■ 該カルボン酸が炭素数１〜６の脂肪族モノカルボン
酸、炭素数２〜５の脂肪族ジカルボン酸、炭素数８〜８
の脂肪族ポリカルボン酸及び炭素数２〜８の脂肪族オキ
シカルボン酸及びそのアルカリ金属塩及びアンモニウム
塩の少なくとも１種である仁とを特徴とする特許請求の
範囲第１項記載の金Ｐ１亀解剥随液。 ■ 該水溶液のｐＨを８．０〜６．０にＲｔＪｉしたこ
とを特徴とする特許請求の範囲第１項又は第２項記載の
金属型！ＩＲ＃ｌＩ離液。[Claims] ■ At least one selected from the group consisting of nitric acid, alkali metal and alkaline earth metal nitrates, and ammonium nitrate at 20 to 500 f/l, aliphatic mono-, di- and poly-carboxylic acids and fatty acids. Gold JMtt on stainless steel, characterized in that it consists of an aqueous solution containing 20 to 800 f/l of at least one carboxylic acid of the group oxycarboxylic acids and their alkali metal θ metal salts and ammonium salts.
! Detachment liquid. (2) The carboxylic acid is an aliphatic monocarboxylic acid having 1 to 6 carbon atoms, an aliphatic dicarboxylic acid having 2 to 5 carbon atoms, or an aliphatic dicarboxylic acid having 8 to 8 carbon atoms.
and at least one of aliphatic polycarboxylic acids having 2 to 8 carbon atoms and alkali metal salts and ammonium salts thereof. Exfoliating liquid. (2) The metal mold according to claim 1 or 2, characterized in that the pH of the aqueous solution is adjusted to RtJi from 8.0 to 6.0! IR#lI syneresis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14299983A JPS6033400A (en) | 1983-08-03 | 1983-08-03 | Electrolytic releasing agent for metal on stainless steel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14299983A JPS6033400A (en) | 1983-08-03 | 1983-08-03 | Electrolytic releasing agent for metal on stainless steel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6033400A true JPS6033400A (en) | 1985-02-20 |
Family
ID=15328582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14299983A Pending JPS6033400A (en) | 1983-08-03 | 1983-08-03 | Electrolytic releasing agent for metal on stainless steel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6033400A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07233796A (en) * | 1994-02-23 | 1995-09-05 | Nippon Enbairo Kogyo Kk | Pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216694A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Ltd | Earthquake-proof porcelain tube |
| JPS5479131A (en) * | 1977-12-07 | 1979-06-23 | Okuno Chem Ind Co | Electrolytic bath for removing electrodeposited metal on stainless steel substrate |
| JPS587720A (en) * | 1981-07-03 | 1983-01-17 | 利昌工業株式会社 | Electrically insulating substrate |
-
1983
- 1983-08-03 JP JP14299983A patent/JPS6033400A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5216694A (en) * | 1975-07-30 | 1977-02-08 | Hitachi Ltd | Earthquake-proof porcelain tube |
| JPS5479131A (en) * | 1977-12-07 | 1979-06-23 | Okuno Chem Ind Co | Electrolytic bath for removing electrodeposited metal on stainless steel substrate |
| JPS587720A (en) * | 1981-07-03 | 1983-01-17 | 利昌工業株式会社 | Electrically insulating substrate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07233796A (en) * | 1994-02-23 | 1995-09-05 | Nippon Enbairo Kogyo Kk | Pump |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0164757A2 (en) | A method of etching copper circuit boards and an etch solution | |
| JP2001140084A (en) | Etching solution for nickel or nickel alloy | |
| US3163524A (en) | Selective stripping of electroplated metals | |
| US4424097A (en) | Metal stripping process and composition | |
| US5219484A (en) | Solder and tin stripper compositions | |
| JPWO2016147709A1 (en) | Electrolytic stripper for jigs | |
| US4548791A (en) | Thallium-containing composition for stripping palladium | |
| JPS6033400A (en) | Electrolytic releasing agent for metal on stainless steel | |
| NL8004399A (en) | ELECTROLYTIC STRIP SHEET AND STRIP METHOD. | |
| US5380400A (en) | Chemical etchant for palladium | |
| JPS6214034B2 (en) | ||
| KR100618165B1 (en) | Electrolytic method of and compositions for stripping electroless nickel | |
| JPH0144438B2 (en) | ||
| JPS5887275A (en) | Stripping method for sn layer on cu and cu alloy | |
| JPS5854200B2 (en) | Method of supplying metal ions in electroplating bath | |
| JPS5816075A (en) | Electrolytic stripping liquid for metal | |
| JP3984385B2 (en) | Nickel stripper | |
| JPS61170584A (en) | Solution for dissolving metal | |
| JP3398116B2 (en) | Stripper for stripping tin or tin alloys on nickel or iron nickel alloys | |
| JP3269887B2 (en) | Dissolution method of metal film | |
| JPS6015707B2 (en) | Tin or tin alloy stripper | |
| SU564944A1 (en) | Electrolyte for electroabrasion machining | |
| JPH07138772A (en) | Dip stripping agent for copper and nickel | |
| JPH1046368A (en) | Solder removing solution | |
| JPH01319689A (en) | Regeneration treatment of waste tin peeling liquid |