Premium
Catalyzed silicon‐mediated living polymerizations, structure control, catalyst design and mechanisms
Author(s) -
Sogah D. Y.,
Hertler W. R.,
Dicker I. B.,
Depra P. A.,
Butera J. R.
Publication year - 1990
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19900320108
Subject(s) - monomer , aldol reaction , polystyrene , living polymerization , catalysis , polymerization , dispersity , polymer , chain transfer , polymer chemistry , chemistry , silylation , end group , silicon , materials science , chemical engineering , organic chemistry , radical polymerization , engineering
Group transfer polymerization (GTP) and the related Aldol‐GTP are new types of living polymerization mediated by silicon for precise control of polymer structure. The two processes are regenerative in that the reactions are accompanied by transfer of silyl group from living end to the incoming monomer and vice versa to produce a reactive functional group as the living end. The reaction can be carried out on solid supports, such as crosslinked polystyrene. Even though the reactions are normally catalyzed, they can be carried out at high pressures without the use of any catalyst. They operate above room temperature, thus enabling one to control molecular weight, polydispersity and monomer sequence under industrially significant conditions. The scope of catalysis is broadened to cover oxyanions.