Hang Zu-sheng
2011
Citations
0
Influential Citations
0
Citations
Journal
Applied Chemical Industry
Abstract
The intermediate N,N'-ethylenediamine bis(phthalie acid imide) was synthesized with phthalic anhydride and ethylenediamine as materials,water as medium.The white flame retardant N,N'-ethylenebis(tetrabromophthalimide) was prepared from the intermediate by the substitution reaction of bromine,and the flame retardance of product was studied by polypropylene.The results indicated the optimal conditions were as follows:intermediate 5 g,bromine 14 g,fuming sulfuric acid(20%) 80 mL,reaction temperature 150 ℃,time 8 h.The bromine content of product was 66.4%.The yield of product was 87%.The LOI value of polypropylene was 28%,the flame retardance degree was UL94-VO,when the product amount was 15%.