a: Fraunhofer Institute for Structural Durability and System Reliability LBF, Division Plastics; Schlossgartenstraße 6, 64289 Darmstadt, Germany; b: Karlsruhe Institute of Technology, Institute of Catalysis Research and Technology; Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany;
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DOI:
10.7502/j.issn.1674-3962.2013.03.03
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Abstract:
During the last decades, the importance of phosphorus-containing halogen-free flame retardants is increasing due to the good environmental sustainability of theses substances. 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and its derivatives as prominent members of this group of flame retardants show excellent flame-retardant efficiency in different polymers, where they act in particular in the gas phase. Since the development of DOPO in 1972, a large number of DOPO derivatives have been investigated and synthesized in academia and industry. This review will discuss the advancements of promising DOPO-based compounds regarding their synthesis and flame retardancy in thermosets as well as in thermoplastics.