激情人妻一区二区三区,国产精品福利诱惑,午夜优质视频在线免费看,少妇av一区二区三区,97资源超碰在线免费观看,玖玖玖精品一区二区三区视频,精品av中文字幕,日本最新熟女女优,liaocao88亚洲麻豆

   Tetrabromoether is an important reactive flame retardant, and also a flame retardant crosslinking agent for synthetic polymer materials. It is mainly used in the flame retardant process of foamed polystyrene, unsaturated polyester, foamed polyurethane, ABS, etc. It can be used as an intermediate to synthesize other flame retardants.
The appearance of tetrabromoether is white powder, its melting point is controlled at 115-120 ℃, and the bromine content is 51%. The packaging form is polypropylene woven bags lined with plastic bags and sealed packaging.
Tetrabromoether application: as an intermediate, it can be further brominated to prepare octabromoether, and can also be used as a cross-linked and additive flame retardant for expandable polystyrene resin; It is a reactive flame retardant, mainly used for flame retardancy of foamed polystyrene, unsaturated polyester, foamed polyester and other materials. It can also be used in combination with hexabromocyclododecane, and has synergistic effect