Chloroprene - Chloroprene

Japanese: クロロプレン - くろろぷれん(英語表記)chloroprene
Chloroprene - Chloroprene

One of the haloalkenes (alkenes with halogen atoms). Its correct name is 2-chloro-1,3-butadiene. It is a volatile colorless liquid. There is an industrial method for synthesizing it from butadiene. In the butadiene process, butadiene is chlorinated at 300°C, then isomerized with a copper salt catalyst to obtain 3,4-dichloro-1-butene, which is then dehydrochlorinated with an aqueous solution of sodium hydroxide to produce it.

It polymerizes easily with light, heat, and oxygen. The polymer obtained by emulsion polymerization is heat-resistant, chemical-resistant, aging-resistant, and flame-retardant, and is widely used as a synthetic rubber known as neoprene, and is also used as a rubber-based adhesive.

[Rikuhei Tani

[References] | Alkenes | Chloroprene rubber | Emulsion polymerization | Butadiene | Butylene [Supplementary information] | Chloroprene (Data Note)
Chloroprene manufacturing method (butadiene process)
©Shogakukan ">

Chloroprene manufacturing method (butadiene process)


Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

ハロアルケン(ハロゲン原子をもつアルケン)の一つ。正しくは2-クロロ-1,3-ブタジエンという。揮発性の無色液体。工業的製法として、ブタジエンから合成する方法がある。ブタジエン法は、ブタジエンを300℃で塩素化したのち銅塩触媒により異性化させて得た3,4-ジクロロ-1-ブテンを、水酸化ナトリウム水溶液で脱塩化水素することにより製造する。

 光、熱、酸素により容易に重合する。乳化重合して得た重合体は耐熱性、耐薬品性、耐老化性、難燃性をもち、ネオプレンの商品名で知られる合成ゴムとして広く利用され、またゴム系接着剤としても用いられている。

[谷利陸平]

[参照項目] | アルケン | クロロプレンゴム | 乳化重合 | ブタジエン | ブチレン[補完資料] | クロロプレン(データノート)
クロロプレンの製法(ブタジエン法)
©Shogakukan">

クロロプレンの製法(ブタジエン法)


出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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