...Later, DuPont of the United States worked on improving the thermal stability of polyacetal by acetylating the ends, and succeeded in this endeavor, commercializing it under the brand name Delrin in 1956. Celanese, also of the United States, discovered that trioxane, a cyclic trimer of formaldehyde, undergoes ring-opening polymerization, and by copolymerizing this with a small amount of ethylene oxide, succeeded in synthesizing copolymer polyacetal, which they commercialized under the brand name Celcon in 1960 (the brand name in Japan is Duracon). Polyacetal crystallizes quickly, so it is very fast to mold, easy to injection mold, and has excellent mechanical properties and heat resistance. ... *Some of the terminology that mentions "Celcon" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…その後アメリカのデュポン社が熱安定性の向上にとりくみ,ポリアセタールの末端をアセチル化することにより,これに成功し,56年にデルリンの商品名で工業化した。また同じくアメリカのセラニーズ社では,ホルムアルデヒドの環状三量体であるトリオキサンが開環重合することを見いだし,これに少量のエチレンオキシドを共重合させて,共重合ポリアセタールの合成に成功,60年にセルコンCelconの商品名で工業化した(日本での商品名はジュラコン)。 ポリアセタールは,結晶化が速いため成形速度が非常に速く,射出成形が容易で,また機械的性質,耐熱性にすぐれている。… ※「Celcon」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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