JPH0751534B2 - Method for stabilizing the quality of chloropropionate - Google Patents
Method for stabilizing the quality of chloropropionateInfo
- Publication number
- JPH0751534B2 JPH0751534B2 JP13417987A JP13417987A JPH0751534B2 JP H0751534 B2 JPH0751534 B2 JP H0751534B2 JP 13417987 A JP13417987 A JP 13417987A JP 13417987 A JP13417987 A JP 13417987A JP H0751534 B2 JPH0751534 B2 JP H0751534B2
- Authority
- JP
- Japan
- Prior art keywords
- chloropropionate
- quality
- acid ester
- container
- alcohol
- 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 - Lifetime
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はクロルプロピオン酸エステルにアルコールを添
加することを特徴とするクロルプロピオン酸エステルの
品質安定化方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for stabilizing the quality of chloropropionic acid ester, which comprises adding alcohol to chloropropionic acid ester.
クロルプロピオン酸エステルは、農薬、医療原料、その
他工業用薬品として用いられその用途は広範に亘ってい
る。Chloropropionate is used as an agricultural chemical, a medical raw material, and other industrial chemicals, and its use is widespread.
クロルプロピオン酸エステルは、製造直後塩素イオンの
少ないものでも、光、特に紫外線、または温度の影響な
どによる、経時的な加水分解等によって、次第に塩素イ
オンを生成し、品質が低下する。クロルプロピオン酸エ
ステル中の塩素イオン含有量の影響については、その用
途にもよるが、一般的には少ない方が望ましく、特に医
薬、農薬等の原料として用いられる場合、塩素イオン含
有量によって、クロルプロピオン酸エステルの商品価値
は著しく左右される。また、クロルプロピオン酸エステ
ルは、これ自体、製造貯蔵タンク、容器などに広く用い
られるステンレス鋼等を腐蝕することはないが、塩素イ
オン含有量が多くなると、次第に、ステンレス鋼等を腐
蝕するようになり、又、これら金属と接触しているクロ
ルプロピオン酸エステル自体に着色を生じる。従って、
クロルプロピオン酸エステルをステンレス鋼等の金属製
の貯蔵タンク、容器などに貯蔵しておくと、その着色の
ために商品価値が著しく損なわれる。これらのことか
ら、製造装置、貯蔵タンク、容器等、クロルプロピオン
酸エステルと接触するものの材質は、通常、グラスライ
ニングまたは樹脂ライニング、さらには、樹脂容器の外
側を金属製にした複合容器などが用いられている。Chloropropionate, even if it has a small amount of chlorine ions immediately after production, gradually produces chlorine ions due to hydrolysis with time due to the influence of light, especially ultraviolet rays, or temperature, and its quality deteriorates. Regarding the influence of the chlorine ion content in chloropropionate, depending on its application, it is generally preferable that the content is small.In particular, when it is used as a raw material for medicines, agricultural chemicals, etc., it depends on the chlorine ion content. The commercial value of propionate is significantly affected. Chlorpropionate does not corrode stainless steel or the like which is widely used for manufacturing and storage tanks, containers, etc., but as the chloride ion content increases, it gradually corrodes stainless steel and the like. In addition, the chloropropionic acid ester itself which is in contact with these metals is colored. Therefore,
If the chloropropionic acid ester is stored in a storage tank, container, or the like made of metal such as stainless steel, its commercial value is significantly impaired due to its coloring. From these facts, the material of the manufacturing equipment, storage tank, container, etc. that come into contact with chloropropionate is usually glass lining or resin lining, and further, a composite container in which the outside of the resin container is made of metal is used. Has been.
本発明者は、クロルプロピオン酸エステルが経時的に塩
素イオンを生じて、商品価値を損なうことがなく、ま
た、貯蔵タンク、容器などにステンレス鋼等を用いても
クロルプロピオン酸エステルが着色することがなく、か
つ、工業的、経済的有利な、高度に品質を安定化させる
方法について鋭意研究した。その結果、クロルプロピオ
ン酸エステルにアルコールを安定剤として添加すること
によって、容易に、高度の品質を安定化できるという事
実を見出し、本発明を完成するに至った。The present inventor has found that chlorpropionate does not impair the commercial value by generating chloride ions over time, and that chlorpropionate is colored even when stainless steel or the like is used for a storage tank, a container, or the like. We have conducted intensive research into a highly stable method that is industrially, economically and economically advantageous. As a result, they have found the fact that a high level of quality can be easily stabilized by adding alcohol as a stabilizer to chloropropionic acid ester, and completed the present invention.
本発明方法において、アルコールの種類については特に
限定する必要はないが、エタノール、イソプロピルアル
コールなどの一価アルコールが好ましく使用される。ま
た添加量についても特に規定する必要はないが、実用
上、イソプロピルアルコールを0.05〜0.3％程度添加す
ることによって目的は十分達せられる。In the method of the present invention, the type of alcohol is not particularly limited, but monohydric alcohols such as ethanol and isopropyl alcohol are preferably used. Further, the addition amount is not particularly limited, but in practical use, the purpose can be sufficiently achieved by adding about 0.05 to 0.3% of isopropyl alcohol.
本発明の安定化方法は、クロルプロピオン酸エステルと
して炭素数が６以下程度のアルキルエステルに適用でき
る。The stabilization method of the present invention can be applied to an alkyl ester having 6 or less carbon atoms as the chloropropionic acid ester.
本発明の安定化方法により、クロルプロピオン酸エステ
ル中に生成する塩素イオンを抑制することが可能とな
り、商品価値を損なうことを防止でき、また、ステンレ
ス鋼の容器にクロルプロピオン酸エステルを入れて貯蔵
しても着色することがないので、コンテイナーによる輸
出も可能となる。By the stabilizing method of the present invention, it becomes possible to suppress the chlorine ion generated in chloropropionic acid ester, it is possible to prevent impairing the commercial value, and put the chloropropionic acid ester in a stainless steel container and store it. Even if it is not colored, it can be exported by the container.
以下、本発明の方法を実施例を挙げさらに詳しく説明す
るが、本発明はこれらの実施例に限定されるものではな
い。Hereinafter, the method of the present invention will be described in more detail by way of examples, but the present invention is not limited to these examples.
実施例−１ クロルプロピオン酸メチルにそれぞれアルコールとし
て、メタノール、エタノール、イソプロピルアルコー
ル、イソアミルアルコール、エチレングリコール、ベン
ジルアルコール、またはポリエチレングリコールを所定
量（0.05〜0.3％）添加し、ガラス製容器に入れて、密
栓し、40℃、２ケ月間保管し、この間の色相（APHA）と
塩素イオンの濃度の測定を行なった。またアルコールを
全く添加しないクロルプロピオン酸メチルについても、
同様に保管し、色相と塩素イオンの濃度の測定を行なっ
た。これらの実験結果は表−１の通りであった。Example 1 Methanol, ethanol, isopropyl alcohol, isoamyl alcohol, ethylene glycol, benzyl alcohol, or polyethylene glycol was added to methyl chloropropionate as an alcohol in a predetermined amount (0.05 to 0.3%), and the mixture was placed in a glass container. The container was tightly closed, stored at 40 ° C for 2 months, and the hue (APHA) and the concentration of chloride ion were measured during this period. Also, for methyl chloropropionate with no added alcohol,
It was stored in the same manner, and the hue and the concentration of chloride ion were measured. The results of these experiments are shown in Table 1.
実施例−２ 実施例−１に用いたものと同じクロルプロピオン酸メチ
ル120gにエタノールまたはイソプロピルアルコールを0.
2％添加し、ガラス容器に入れ、その中にステンレスの
テストピース（SUS316,3×５×2mm）を入れて密栓し40
℃、２ケ月間保管した後、色相（APHA）の測定を行なっ
た。またアルコールを全く添加しない他は、全く同様に
実験した。これらの実験結果は表−２の通りであった。
なおテストピースを入れても塩素イオンの増加は全く認
められなかった。 Example-2 120 g of the same methyl chloropropionate as used in Example-1 was supplemented with ethanol or isopropyl alcohol.
Add 2%, put in a glass container, put a stainless test piece (SUS316, 3 x 5 x 2 mm) in it, and tightly plug 40
After storing at ℃ for 2 months, the hue (APHA) was measured. The same experiment was conducted except that no alcohol was added. The results of these experiments are shown in Table 2.
Even if the test piece was put in, no increase in chloride ion was observed.
Claims (1)
を添加することを特徴とするクロルプロピオン酸エステ
ルの品質安定化方法。1. A method for stabilizing the quality of chloropropionic acid ester, which comprises adding alcohol to chloropropionic acid ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13417987A JPH0751534B2 (en) | 1987-05-29 | 1987-05-29 | Method for stabilizing the quality of chloropropionate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13417987A JPH0751534B2 (en) | 1987-05-29 | 1987-05-29 | Method for stabilizing the quality of chloropropionate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63297341A JPS63297341A (en) | 1988-12-05 |
| JPH0751534B2 true JPH0751534B2 (en) | 1995-06-05 |
Family
ID=15122289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13417987A Expired - Lifetime JPH0751534B2 (en) | 1987-05-29 | 1987-05-29 | Method for stabilizing the quality of chloropropionate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0751534B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773198B (en) * | 2015-04-09 | 2024-07-16 | 大金工业株式会社 | Composition containing acrylic acid derivative and method for stabilizing acrylic acid derivative |
-
1987
- 1987-05-29 JP JP13417987A patent/JPH0751534B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63297341A (en) | 1988-12-05 |
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