Anionic polymerization of phosphorus containing 2-methyl-1,3-butadienes

Kuzina, N. G.; Prorubshchikov, A.Yu.; Podol'skii, A.F.; Mashlyakovskiĭ, L. N.

doi:10.1016/0032-3950(88)90237-7

Cited by 1 publication

(1 citation statement)

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“…The decreased propagation rate of the POPh monomer could be due to steric hindrance in the molecule or electronic effects in the pending group that is adjacent to the epoxide ring. In addition, other factors can also have an influence on the polymerization rate, such as the p K a of the monomers and the type of nucleophilic species in the system …”

Section: Resultsmentioning

confidence: 99%

Fire retardant functionalized polyol by phosphonate monomer insertion

et al. 2015

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A strategy for synthesis and functionalization of polyurethanes (PUs) is described. Polyols bearing terminal groups were prepared by anionic ring-opening copolymerization between propylene oxide and epoxy dimethylphosphonate (POPh). The direct insertion of POPh improves the flammability of PUs. Therefore the structure, properties and flame retardant properties of polyether polyols and PUs were studied. The structure of the polyether polyols was confirmed by gel permeation chromatography (GPC), nuclear magnetic resonance spectroscopy (NMR) and matrix assisted laser desorption ionization time-of-flight (MALDI-TOF). The thermal stability was determined by TGA (thermogravimetric analysis). The morphological structure was analysed by scanning electron microscope (SEM). The elemental composition of the charred residues was determined by energy dispersive x-ray spectrometer (EDAX). The introduction of POPh presents the advantage of being able to increase the percentage of phosphorus introduced in the polyol, which slightly modifies the thermal stability of the phosphorylated foams. The temperature decreased as the phosphorus was incorporated and the percentage of char increased as well.

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Section: Resultsmentioning

confidence: 99%