Fire-retardant polymers. Polymerisation of 1-oxo-2,6,7-trioxa-1-phosphabicyclo[2,2,2]oct-4-ylmethyl methacrylate, and its copolymerisation with methyl methacrylate, styrene, and triallylcyanurate

Synthesis and characterization of PEDSCD and its application as a flame retardant in epoxy resins

“…The peaks at 860, 769, 667, and 631 cm −1 are the characteristic peaks of caged rings. 11,12 The peaks at 2960 and 2905 cm −1 confirm the existence of –CH 2 structure. 13,14 These groups of peaks appear in the FTIR spectra of both PEPA and PEDSCD.…”

NiSO4·6H2O as a new, efficient, and reusable catalyst for the α-aminophosphonates synthesis under mild and eco-friendly conditions

“…The key step of this approach is the addition of the pentavalent phosphorus nucleophile to imine formed in situ between aldehyde and primary amine. Similar methods are described [38] using variety of catalysts, Lewis acids, and others such as; TiO 2 [13], SnCl 4 [21], ZnCl 2 [39], Sn(OTf) 2 [12], Cu(OTf) 2 Á7H 2 O [14], BiNO 3 Á5H 2 O [8], BF 3 -SiO 2 [28], ZrOCl 2 Á8H 2 O or ZrO(ClO 4 ) 2 Á6H 2 O [7], Cp 2 Zr(OSO 2 C 4 F 9 ) 2 Á2H 2 O [22], Cd(ClO 4 ) 2 ÁH 2 O [10], CoCl 2 Á6H 2 O [18], Sulfamicacid [27], TsCl [16], Fe/SWCNTs [31], FeCl 3 [29], etc. In spite of their advantages, these methods show some flaws.…”

“…They are used fruitfully in various domains, in agrochemistry as plant growth regulators, herbicides, insecticides, and fungicides [25,26]. They are also known for their physical properties and are used as retardants for fire materials [2]. During the past few years, various methods have been developed for the synthesis of aaminophosphonate.…”