Abstract
The increasing concern about the potential negative health effects of traditional organohalogen flame retardants have placed these compounds under increasing regulatory pressure around the world. There is a growing need to develop new, nontoxic, biocompatible or biodegradable flame retardant agents. Phosphorus compounds derived from renewable biosources offer great potential to meet this need. Isosorbide is a dihydroxy ether available from starch. It may be readily converted to the corresponding bis-acrylate ester. This compound undergoes Michael addition of phosphites to provide a number of phosphorus compounds which display good flame retardancy in DGEBA epoxy.
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