|
|Section3= }} Cyclododecatrienes are cyclic trienes with the formula C12H18). Four isomers are known for 1,5,9-cyclododecatriene. The ''trans'',''trans'',''cis''-isomer is a precursor in the production of nylon-12. : ==Production== The ''trans'',''trans'',''cis''-isomer is obtained by cyclotrimerization of butadiene catalyzed by a mixture of titanium tetrachloride and an organoaluminium co-catalyst. Production capacity in 1995 was 8000 tons. : As aforementioned, titanium catalysts predominately produce the important ''cis'',''trans'',''trans''- isomer. The all-''trans'' isomer is, however, the product from nickel- and chromium-catalyzed routes. In general, the yield of cyclododecatriene through these methods is greater than 80%. The principal side products are the dimers and oligomers of butadiene. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「cyclododecatriene」の詳細全文を読む スポンサード リンク
|