Bromine — containing polyurethane ionomers
Tóm tắt
Polyurethane ionomers with reduced flammability were obtained by incorporating a brominated chain extender (dibromoneophentyl glycol-DBNPG) into the ionomers based on isophoronediisocyanate, polyoxytetramethylene glycol and 2,2-bis(hydroxymethyl)propionic acid. To examine the influence of brominated diol on the characteristics of the synthesized polymers, model polyurethane compounds containing various amounts of brominated and nonbrominated chain extenders (1,4-butanediol and neopenthyl glycol) were prepared, as well. The products were studied by FTIR, DSC and TGA methods. Hydrolytic stability of the ionomers in water was controlled by FTIR; their flammability was examined by oxygen index measurements.
Tài liệu tham khảo
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