引用本文:
董为民, 逄束芬, 扈晶余, 杨继华. 稀土催化丁二烯-异戊二烯共聚合过程中的原位环化反应[J]. 应用化学,
2000, 17(3): 272-275.
Citation: DONG Wei-Min, PANG Shu-Fen, HU Jing-Yu, YANG Ji-Hua. In situ Cyclization in the Course of Butadiene-Isoprene Copolymerization with Nd-based Catalyst[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 272-275.
Citation: DONG Wei-Min, PANG Shu-Fen, HU Jing-Yu, YANG Ji-Hua. In situ Cyclization in the Course of Butadiene-Isoprene Copolymerization with Nd-based Catalyst[J]. Chinese Journal of Applied Chemistry, 2000, 17(3): 272-275.
稀土催化丁二烯-异戊二烯共聚合过程中的原位环化反应
English
In situ Cyclization in the Course of Butadiene-Isoprene Copolymerization with Nd-based Catalyst
Abstract:
In the course of cis-copolymerization of butadiene(BD) with isoprene(IP) by using Nd(naph)3-Al(C2H5)3-(t-C4H9)Cl as catalyst in toluene, tert-butylchloride or allyl chloride was added to give a soluble, gel-free cyclized copolymer. Some parameters affecting the cyclization were investigated. The preliminary results of IR, 1H NMR analyses confirmed the cyclization of both BD and IP units and that the IP units were cyclized in a greater extent than BD units.
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Key words:
- butadiene
- / isoprene
- / copolymerization
- / rare earth catalyst
- / cyclization
- / cyclopo-lymerization
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