Zdenka Brunovska, J. P. Liu, H. Ishida
Jul 1, 1999
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Journal
Macromolecular Chemistry and Physics
Abstract
The benzoxazine monomer synthesis via 1,3,5-trialkyl(aryl)hexahydro-1,3,5-triazine intermediate is followed by 1H NMR, FT-IR, and SEC. A model compound, 1,3,5-triphenylhexahydro-1,3,5-triazine, is synthesized independently and its reaction with bisphenol-A and paraformaldehyde in stoichiometric amounts is also followed by 1H NMR. Additional model compounds, 1,3,5-trimethyl(ethyl)hexahydro-1,3,5-triazine, are used instead of a primary amine to synthesize bifunctional benzoxazine monomers, bis(3,4-dihydro-2H-3-methyl(ethyl)-1,3-benzoxazinyl)isopropane, via novel solventless reaction with bisphenol-A in the presence of paraformaldehyde. The mechanism of this reaction is proposed.