Polyphosphonates and phosphonate oligomers are a group of flame retardants that
have gained much attention in recent years. Produced under the brand name Nofia,
1 they are now commercially used to flame retard different resins such as
polyesters, polycarbonate, polyurethanes, epoxies, unsaturated polyesters, and
polyureas. Phosphonates can be used as the single flame retardant but recently,
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