char residue when compared to pure PUA coatings. Another important observation
was that lower percentages of N-PBAAP in PUA coatings favored a gas-phase FR
mechanism, while higher percentages favored a solid-phase FR mechanism. This is
Scheme 4.12 Structures of some FR additives used to prepare UV-curable FR polymers. Redraw
on the basis of information collected from [115, 138, 140, 143, 144, 153]
Scheme 4.13 Preparation of UV-curable FR PUA-PBAAP polymer films. Reproduced with
permission from [137]. Copyright 2010, Elsevier Science Ltd. A new UV-reactive monomer
piperazine-N,N′-bis(acryloxyethylaryl-phosphoramidate), N-PBAAP
4.4 UV-Curable FRs
35
was that lower percentages of N-PBAAP in PUA coatings favored a gas-phase FR
mechanism, while higher percentages favored a solid-phase FR mechanism. This is
Scheme 4.12 Structures of some FR additives used to prepare UV-curable FR polymers. Redraw
on the basis of information collected from [115, 138, 140, 143, 144, 153]
Scheme 4.13 Preparation of UV-curable FR PUA-PBAAP polymer films. Reproduced with
permission from [137]. Copyright 2010, Elsevier Science Ltd. A new UV-reactive monomer
piperazine-N,N′-bis(acryloxyethylaryl-phosphoramidate), N-PBAAP
4.4 UV-Curable FRs
35