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Thermosetting vinyl and acrylic copolymers
Author(s) -
Kelly D. P.,
Melrose G. J. H.,
Solomon D. H.
Publication year - 1963
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.1963.070070604
Subject(s) - copolymer , melamine , acrylic acid , melamine resin , polymer chemistry , glycidyl methacrylate , formaldehyde , materials science , epichlorohydrin , synthetic resin , catalysis , chemistry , organic chemistry , polymer , composite material , coating
Infrared spectra indicate that carboxyl‐substituted acrylic copolymers react appreci8bly with a butylated melamine–formaldehyde resin when heated at 120°C. for 30 min., but under these conditions acid catalysis is needed before epoxy‐ or amido‐substituted copolymers will crosslink with the melamine–formaldehyde resin. Two methods have been used to synthesize hydroxyl‐substituted acrylic copolymers. First, a glycidyl methacrylate copolymer was reacted with diethplamine. Second, an acrylic acid copolymer was heated under reflux with butylene oxide in the presence of a basic catalyst. This second method was used to esterify a vinyl toluene–acrylic acid–acrylamide copolymer which was subsequently treated with paraformaldehyde. The resulting hydroxy‐methylolamido copolymer intercondensed when heated at 120°C. for 30 min., somewhat as did the hydroxy copolymer with melamine–formaldehyde resin blends.