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Ring‐opening‐closing alternating copolymerization via zwitterion intermediates
Author(s) -
Kobayashi Shiro,
Lundmark Stefan,
Kadokawa JunIchi,
Uyama Hiroshi,
Shoda ShinIchiro
Publication year - 1993
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.19930730114
Subject(s) - copolymer , zwitterion , monomer , ring (chemistry) , polymer chemistry , acrylic acid , chemistry , closing (real estate) , polymer , organic chemistry , molecule , political science , law
The present paper describes comprehensive results based on a new concept, i.e., ring‐opening‐closing alternating copolymerization. The copolymerization is given by combinations of ring‐opening of a cyclic monomer (A) and ring‐closing of a non‐cyclic monomer (B). The cyclic monomers used are five‐, six‐, and seven‐membered cyclic phosphonites and 2‐methyl‐2‐oxazoline. As a monomer (B), muconic acid, dialdehydes, di(meth)acrylic anhydrides, and N ‐methyldiacrylamide are used. A 1:1 mixture of these monomers produced an alternating copolymer having a ring‐opened and a ring‐closed structural unit. A mechanism involving zwitterion intermediates is considered in all copolymerizations.