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研究了对叔丁基邻苯二酚(TBC)不同添加方式对Ni(naph)_2-Al(i-Bu)_3-BF_3·OEt_2(简称Ni-Al-B)体系引发丁二烯聚合的催化活性、产物分子量及其分布的影响。添加方式的活性顺序为:丁油+TBC>B+TBC>(Al+Ni)+TBC>(Ni+TBC)+Al>Al+TBC。B组分中添加TBC后,Al/B值对分子量的调节幅度大,其值为0.2—2.0(mol比)时,可制备出[η]为1.1—5.8 dL/g的聚合物。
The catalytic activities of different addition modes of t-butylcatechol (TBC) on the polymerization of butadiene initiated by Ni (naph) _2-Al (i-Bu) _3-BF_3 · OEt_2 (Ni-Al-B) Product molecular weight and its distribution. The order of addition activity was: Butyl oil + TBC> B + TBC> (Al + Ni) + TBC> (Ni + TBC) + Al> Al + TBC. When TBC is added to component B, the Al / B value has a large adjustment of molecular weight, and a value of 0.2 to 2.0 (mol ratio) yields a polymer with [η] of 1.1-5.8 dL / g.