JPS59487B2 - methylene chloride composition - Google Patents
methylene chloride compositionInfo
- Publication number
- JPS59487B2 JPS59487B2 JP13540980A JP13540980A JPS59487B2 JP S59487 B2 JPS59487 B2 JP S59487B2 JP 13540980 A JP13540980 A JP 13540980A JP 13540980 A JP13540980 A JP 13540980A JP S59487 B2 JPS59487 B2 JP S59487B2
- Authority
- JP
- Japan
- Prior art keywords
- methylene chloride
- chloride composition
- solvent
- weight
- dialkylamine
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
- C23G5/02—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents
- C23G5/028—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons
- C23G5/02854—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents using organic solvents containing halogenated hydrocarbons characterised by the stabilising or corrosion inhibiting additives
- C23G5/02883—Nitrogen-containing compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】
この発明は安定性を向上させたメチレンクロライド組成
物に関するものである。DETAILED DESCRIPTION OF THE INVENTION This invention relates to methylene chloride compositions with improved stability.
メチレンクロライドは強力な溶解力を有し、しかも毒性
が低く公害発生のおそれがなくかつ、不燃性であるため
、金属脱脂洗浄用溶剤をはじめ、一般工業用溶剤、ペイ
ントリムーバー、塗料用溶剤、プリント基板用溶剤等に
広く使用されており、特に近年金属脱脂洗浄用溶剤とし
ての需要が増大している。Methylene chloride has strong dissolving power, low toxicity, no risk of pollution, and is nonflammable, so it can be used as a solvent for metal degreasing, general industrial solvents, paint removers, paint solvents, and printing. It is widely used as a solvent for substrates, and demand for it as a solvent for degreasing and cleaning metals has increased in recent years.
しかし、メチレンクロライドは１・１・１−トリクロル
エタン、トリクロルエチレン、テトラクロルエチレン等
のような塩素化炭化水素系溶剤に比べて安定性にすぐれ
ているものの光、熱、水分、金属粉、溶解物（油、グリ
ース等）、研磨剤等の存在下ではやはり酸化、熱分解、
加水分解等の劣化を起すという問題点を有する。However, although methylene chloride has superior stability compared to chlorinated hydrocarbon solvents such as 1,1,1-trichloroethane, trichlorethylene, and tetrachloroethylene, In the presence of substances (oil, grease, etc.), abrasives, etc., oxidation, thermal decomposition,
It has the problem of causing deterioration such as hydrolysis.
塩素化炭化水素系溶剤に関し、その安定性を向上させる
べくある種の添加剤を加える試みはすでに公知であり、
１・１・１−トリクロルエタン、トリクロルエチレン、
テトラクロルエチレン等の塩素化炭化水素系溶剤につい
て各種の添加剤が提案されている。メチレンクロライド
についても現在までにかなりの添加剤が提案されている
が、まだ完全に満足すべき状態でない。本発明者らはメ
チレンクロライドが本来有する性能を阻害せず、比較的
少量の添加でより高度の安定化達成を目的として鋭意研
究を重ねた結果、メチレンクロライドにプロピレンオキ
サイド、１・４−ジオキサン、ジアルキルアミン、低級
アルコールおよびアミレンを組み合わせて添加すること
により上記目的が満足され得ることを見出し本発明を完
成した。Regarding chlorinated hydrocarbon solvents, attempts to add certain additives to improve their stability are already known.
1,1,1-trichloroethane, trichlorethylene,
Various additives have been proposed for chlorinated hydrocarbon solvents such as tetrachlorethylene. Many additives have been proposed for methylene chloride to date, but they are still not completely satisfactory. The present inventors have conducted extensive research with the aim of achieving a higher degree of stability with the addition of relatively small amounts without interfering with the inherent performance of methylene chloride. The present invention was completed based on the discovery that the above object can be satisfied by adding a combination of dialkylamine, lower alcohol, and amylene.
また、これら組合せ添加成分に、更にニトロメタンを添
加することによりメチレンクロライドを一層安定化でき
ることも見出された。上記したような成分を比較的少量
配合してなる本発明のメチレンクロライド組成物は前記
したメチレンクロライドが本来有する特徴をそのまゝ維
持しており、光、熱、水分、金属粉、溶解物、研磨剤等
の存在するか酷な条件下での酸化、熱分解、加水分解等
の劣化に対する安定性が顕著に改善されたものである。
メチレンクロライドに対する上記した添加剤の配合割合
はいづれも少量でよく、プロピレンオキサイドは０．０
１〜１．０重量％、１・４−ジオキサンは０．００１〜
１．０重量％、ジアルキルアミンは０．０００１〜０．
０１重量％、低級アルコールは０．０１〜１．０重量％
、アミレンは０．００１〜１．０重量％、ニトロメタン
は０．００１〜１．０重量％の範囲でそれぞれ添加すれ
ばよい。各添加剤の配合割合が上記した範囲の下限より
も少ないときは十分な安定化効果が得られず、他方上記
範囲の上限を越える多量を加えても、それ以上の効果が
得られないのみならず、経済的に不利となるからである
。上記低級アルコールおよびジアルキルアミンとしては
メタノール エタノール プロパノールジエチルアミン
、ジイソプロピルアミン、エチルプロピルアミンなどが
例示され、これらは１種に限られず、２種以上を併用し
てもよい。It has also been found that methylene chloride can be further stabilized by further adding nitromethane to these combined additive components. The methylene chloride composition of the present invention, which contains relatively small amounts of the above-mentioned components, maintains the original characteristics of methylene chloride described above, and is resistant to light, heat, moisture, metal powder, melts, It has significantly improved stability against deterioration such as oxidation, thermal decomposition, and hydrolysis under harsh conditions in the presence of abrasives and the like.
The proportion of the above-mentioned additives to methylene chloride may be small, and propylene oxide is 0.0%.
1 to 1.0% by weight, 1,4-dioxane 0.001 to
1.0% by weight, dialkylamine 0.0001-0.
01% by weight, lower alcohol 0.01-1.0% by weight
, amylene may be added in an amount of 0.001 to 1.0% by weight, and nitromethane may be added in an amount of 0.001 to 1.0% by weight, respectively. If the blending ratio of each additive is less than the lower limit of the above range, sufficient stabilizing effect will not be obtained; on the other hand, even if a large amount exceeding the upper limit of the above range is added, no further effect will be obtained. This is because it is economically disadvantageous. Examples of the lower alcohol and dialkylamine include methanol, ethanol, propanol, diethylamine, diisopropylamine, and ethylpropylamine, and these are not limited to one type, and two or more types may be used in combination.
本発明のメチレンクロライド組成物は前記したとおり安
定性が顕著に改善されたものであり、金属脱脂洗浄用溶
剤、一般工業用溶剤、ペイントリムーバー、塗料用溶剤
、プリント基板用溶剤等として高信頼性の下に使用され
、よりか酷な条件であつても確実かつ永続的な耐劣化性
を発揮し、機械装置や製品に腐食、変色等の不利を与え
ることがないと云う特徴を有する。As mentioned above, the methylene chloride composition of the present invention has significantly improved stability and is highly reliable as a solvent for metal degreasing and cleaning, a general industrial solvent, a paint remover, a paint solvent, a printed circuit board solvent, etc. It exhibits reliable and permanent deterioration resistance even under harsher conditions, and is characterized by not causing disadvantages such as corrosion and discoloration to mechanical equipment and products.
つぎに本発明の実施例をあげる。Next, examples of the present invention will be given.
実施例
還流冷却器を備えた内容積１５０ｍ１のフラスコに下記
の表に示すような各種の添加剤を含むメチレンクロライ
ドを１００ｍ１仕込んだ。Example 100 ml of methylene chloride containing various additives as shown in the table below was charged into a 150 ml flask equipped with a reflux condenser.
このフラスコの気相および液相部に、表面をよく磨いた
アルミニウム試験片をそれぞれ一枚ずつ配置するととも
にアルミニウムパイプを切断して得られた切紛２７をす
ばやくフラスコ内に投入した。つぎに、このフラスコを
ウオーターバスを用いて加熱し、１日８時間の還流を４
０日間行つた後、アルミニウム試験片を取出してその気
相部分および液相部分の腐食状態、内容液の色調変化、
および内容液のＰＨ測定をした（内容液に等量の水を加
えて処理し、この処理水についてＰＨ測定した）ところ
、下記の表に示すような結果が得られた。〔アルミニウ
ム試験片の腐食状態判定基準〕０・・・・・・・・・腐
食なし△・・・・・・・・・わずかに腐食
×・・・・・・・・・顕著に腐食One aluminum test piece with a well-polished surface was placed in each of the gas phase and liquid phase portions of the flask, and cuttings 27 obtained by cutting the aluminum pipe were quickly introduced into the flask. Next, the flask was heated using a water bath and refluxed for 8 hours a day for 4 hours.
After 0 days, the aluminum test piece was taken out and the corrosion state of the gas phase part and liquid phase part, color change of the content liquid,
When the PH of the content liquid was measured (the content liquid was treated by adding an equal amount of water, and the PH of the treated water was measured), the results shown in the table below were obtained. [Criteria for judging the corrosion state of aluminum test pieces] 0...No corrosion△...Slightly corroded×...Significantly corroded
Claims (1)
ド、（ロ）１・４−ジオキサン、（ハ）ジアルキルアミ
ン、（ニ）低級アルコールおよび（ホ）アミレンを添加
してなる安定化メチレンクロライド組成物。1. A stabilized methylene chloride composition obtained by adding (a) propylene oxide, (b) 1,4-dioxane, (c) dialkylamine, (d) lower alcohol, and (v) amylene to methylene chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13540980A JPS59487B2 (en) | 1980-09-29 | 1980-09-29 | methylene chloride composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13540980A JPS59487B2 (en) | 1980-09-29 | 1980-09-29 | methylene chloride composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5759821A JPS5759821A (en) | 1982-04-10 |
| JPS59487B2 true JPS59487B2 (en) | 1984-01-07 |
Family
ID=15151046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13540980A Expired JPS59487B2 (en) | 1980-09-29 | 1980-09-29 | methylene chloride composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59487B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143285U (en) * | 1984-08-20 | 1986-03-20 | 昇 矢野 | circular needles for hand knitting |
-
1980
- 1980-09-29 JP JP13540980A patent/JPS59487B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6143285U (en) * | 1984-08-20 | 1986-03-20 | 昇 矢野 | circular needles for hand knitting |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5759821A (en) | 1982-04-10 |
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