The phosphate oligomer(FR-421) as high efficient flame retardant was prepared with phosphorus oxychloride,tetrabromine bisphenol-A and 2,3-dibromine prapanol as row materials.Its structure was determined by IR and ele...The phosphate oligomer(FR-421) as high efficient flame retardant was prepared with phosphorus oxychloride,tetrabromine bisphenol-A and 2,3-dibromine prapanol as row materials.Its structure was determined by IR and elemental analysis.The effects of working conditions on the synthesis of FR-421 was also involved.展开更多
文摘The phosphate oligomer(FR-421) as high efficient flame retardant was prepared with phosphorus oxychloride,tetrabromine bisphenol-A and 2,3-dibromine prapanol as row materials.Its structure was determined by IR and elemental analysis.The effects of working conditions on the synthesis of FR-421 was also involved.
