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Syntheses and properties of polymers that undergo no shrinkage on cross‐linking by self‐catalyst
Author(s) -
Tagoshi Hirotaka,
Endo Takeshi
Publication year - 1991
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1991.070431018
Subject(s) - sulfonium , acrylonitrile , polymer chemistry , copolymer , curing (chemistry) , polymerization , materials science , monomer , polymer , catalysis , methylene , chemistry , organic chemistry , salt (chemistry) , composite material
The polymers containing spiroorthoester and benzyl sulfonium salt moieties were prepared by the ternary radical polymerization of unsaturated spiroorthoester 2‐methylene‐1,4,6‐trioxaspiro [4.6] undecane (1) or 2‐methylene‐9‐methyl‐1,4,6‐trioxaspiro [4.5] decane (2) with vinyl benzyl sulfonium salt (VBS + SbF − 6 , 3) and vinyl monomers (acrylonitrile or methyl acrylate). The obtained ternary copolymers such as P I , P II , P III , and P IV underwent curing over 75°C by self‐catalyst to obtain the corresponding gelled polymers, with expansion or only slight shrinkage on curing.