Stereoselective Copolymerization of Butadiene and Functionalized 1,3-Dienes with Neodymium-Based Catalysts
作者:Hannes Leicht、Inigo Göttker-Schnetmann、Stefan Mecking
DOI:10.1021/acs.macromol.7b02007
日期:2017.11.14
the 1,4-cis selective copolymerization of isoprene and 1,3-butadiene with different R2N- and RS-functionalized 1,3-dienes. Incorporation of the functionalized 1,3-diene occurs very efficiently with high comonomer conversions, to yield polymers with typical Mn = 5 × 104 to 2 × 105 g mol–1. High (>10 mol %) to very high (45 mol %) incorporation ratios and even homopolymerizations of the functionalized
基于钕的Ziegler-Natta系统催化异戊二烯和1,3-丁二烯与不同的R 2 N和RS官能化的1,3-二烯的1,4-顺式选择性共聚。在高共聚单体转化率下,官能化的1,3-二烯的掺入非常有效,产生的聚合物的典型M n = 5×10 4至2×10 5 g mol –1。高(> 10摩尔%),以非常高的(45摩尔%)的官能化的二烯的掺入比和甚至均聚可以容易地作为用于例如TMS观察实现2 N(CH 2)3 C(= CH 2)CH = CH 2或PhS(CH2)3 C(= CH 2)CH = CH 2。与丁二烯均聚相比,所得共聚物的周转数,微观结构和分子量的比较显示共聚单体几乎没有不良影响。另外,在1,3-丁二烯或异戊二烯与TMS的共聚物TMS基团的断裂2 N(CH 2)3 C(= CH 2)CH = CH 2周的结果在共聚物主轴承-NH 2胺作为官能团。