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Ring‐opening‐closing alternating copolymerization
Author(s) -
Kobayashi Shiro
Publication year - 1991
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.19910420107
Subject(s) - copolymer , monomer , ring (chemistry) , polymer chemistry , chemistry , closing (real estate) , materials science , polymer , organic chemistry , political science , law
This paper reports a new copolymerization based on the novel concept, i.e., ring‐opening‐closing alternating copolymerization. The reaction of a cyclic monomer A and a noncyclic monomer B takes place without added initiator or catalyst to give a copolymer of structure having a ring‐opened unit from monomer A and a ring‐closed unit from monomer B in alternating arrangement. As monomer A, five, six and seven‐membered cyclic phosphonites are employed. As monomer B, on the other hand, are used muconic acid and dialdehydes. Combinations of these monomers A and B produced in all cases ring‐opened and closed 1 : 1 alternating copolymers.