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    • 2. 发明授权
    • Process for preparing conjugated diene butyl
    • 共轭二烯丁基的制备方法
    • US4068051A
    • 1978-01-10
    • US631483
    • 1975-11-13
    • Francis P. BaldwinJames A. Rae
    • Francis P. BaldwinJames A. Rae
    • C08F8/00C08F8/26
    • C08F8/26
    • Improved processes for the dehydrohalogenation of halogenated butyl rubber in order to prepare a butyl rubber having randomly distributed sites of conjugated unsaturation are disclosed. Such processes, which include the contacting of a solution of halogenated butyl rubber with a soluble metal carboxylate, a soluble carboxylic acid, and an oxide or hydroxide of a metal selected from Groups Ia and IIa of the Periodic Table, are carried out in a reaction zone which is maintained substantially free of free water vapor. Preferably, excess amounts of hydrophilic reagents are added to the reaction zone or in the alternative the reaction zone is purged with a drying gas.
    • 公开了用于制备具有共轭不饱和度的随机分布位点的丁基橡胶的卤化丁基橡胶的脱卤化氢的改进方法。 这些方法包括将卤代丁基橡胶与可溶性金属羧酸盐的溶液,可溶性羧酸和选自元素周期表第Ia和IIa族的金属的氧化物或氢氧化物的接触反应在反应中进行 保持基本上不含游离水蒸气的区域。 优选地,将过量的亲水试剂加入到反应区中,或者在反应区中用干燥气体吹扫反应区。