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The polymerization of butadiene by bis(η 3 ‐allylnickeltrifluoroacetate)/tetrachloro‐1,4‐benzoquinone revisited
Author(s) -
Winter Herman,
Aagaard Olav
Publication year - 1998
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/(sici)1521-3927(19980701)19:7<345::aid-marc345>3.0.co;2-c
Subject(s) - polymerization , chain transfer , 1,3 butadiene , benzoquinone , living polymerization , polymer chemistry , catalysis , hydride , chemistry , photochemistry , organic chemistry , radical polymerization , polymer , hydrogen
The catalytic system bis( n 3 ‐allylnickeltrifluoroacetate)/tetrachloro‐1,4‐benzoquinone, reported in the literature to initiate the living polymerization of butadiene, was re‐examined in more detail. All experiments dealing with catalyst‐cocatalyst preparation indicate that, although polymerization rates are comparable to those reported previously, the present system is far from perfectly living. The dependence of M̄ n on conversion suggests that chain‐transfer, most probably by β‐hydride elimination, plays an important role.