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Living ring‐opening polymerization of cyclic carbonates by titanium bisphenolate complexes
Author(s) -
Takeuchi Daisuke,
Aida Takuzo,
Endo Takeshi
Publication year - 1999
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(19990401)20:4<182::aid-marc182>3.0.co;2-v
Subject(s) - polycarbonate , polymerization , polymer chemistry , polymer , titanium , ring opening polymerization , molar mass distribution , ring (chemistry) , materials science , chemistry , organic chemistry
2,2′‐Methylenebis(6‐ tert ‐butyl‐4‐methylphenolate) titaniumdichloride ( 1 a ) brought about the living polymerization of 1,3‐dioxepan‐2‐one (7CC) to give polymers with narrow molecular weight distributions. The molecular weight of the obtained polycarbonate could be controlled by changing the initial mole ratio of 7CC and 1 a . The polycarbonate thus formed has hydroxymethylene terminal units at both ends.