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Shelf Stability of Isocyanate‐Functionalized Vinyl Acrylic Latexes
Author(s) -
Treviño María E.,
Ramírez Jorge C.,
Saade Hened,
López Raúl G.,
Ríos Leonardo
Publication year - 2009
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200950934
Subject(s) - isocyanate , sodium dodecyl sulfate , copolymer , vinyl acetate , polymer chemistry , acrylate , hydrolysis , pulmonary surfactant , sulfonate , chemistry , acrylic acid , sodium , materials science , organic chemistry , polyurethane , polymer , biochemistry
Copolymerization of vinyl acetate (VA) with butyl acrylate (BA) and dimethyl meta‐isopropenyl benzyl isocyanate (TMI) was carried out at 40 °C in emulsions stabilized with sodium dodecyl sulfate (SDS) or sodium dodecyl benzene sulfonate (SDBS). Regardless of the type of surfactant employed, latexes were very unstable during storage. Moreover, the hydrolysis of TMI and undesirable premature crosslinking of the polymeric chains did occur at room temperature during latexes storage.