ARTICLE | doi:10.20944/preprints202012.0594.v1
Subject: Chemistry And Materials Science, Biomaterials Keywords: benzoxazines; polybenzoxazines; diaminodiphenylmethane; 3,3’-dichloro-4,4’-diaminodiphenylmethane; heterocycles; thermosetting binders
Online: 23 December 2020 (15:30:55 CET)
As a result of this work, a previously unreported benzoxazine monomer based on 3,3'-dichloro-4,4'-diaminodiphenylmethane was obtained, characterized by 1H and 13C NMR spectroscopy, and its thermal and rheological properties were studied. A comparison between the properties of benzoxazines based on diamines (3,3'-dichloro-4,4'-diaminodiphenylmethane and 4,4’-diaminodimethylmethane). The effect of the reaction medium on the structure of the oligomeric fraction and the overall yield of the main product was studied. The synthesized monomers can be used as thermo- and fire-resistant binders for polymer composite materials, as well as hardeners for epoxy resins.