The use of SBS bromide mainly includes as a flame retardant applied to building external wall insulation materials. bromide SBS, also called brominated styrene - butadiene - styrene block copolymer ( Br - SBS) , is an innovative polymerization flame retardant agent, has many excellent properties, considered hexabromocyclododecane ( HBCD) alternatives. Its main advantages include:
Stability: SBS bromide is a stable high molecular weight polymer, is not easy to absorb moisture, is helpful to reduce the residual water content of EPS microbeads, improve production efficiency.
Flame retardancy: under the same bromine content, the flame retardancy of SBS bromide in polystyrene foam is equivalent to that of HBCD, and can be shared with the synergist in EPS/XPS flame retardancy system, to improve the flame retardancy effect.
Environmental protection and safety: as an environmentally friendly flame retardant, SBS bromide overcomes the problems of bioavailability and bioaccumulation, its low toxicity and sustainability performance is good, meets the environmental requirements.
Application: SBS bromide is widely used worldwide to replace HBCD in expanded polystyrene (EPS) and extruded polystyrene (XPS) foam insulation materials. In China, a number of enterprises such as LANXESS Chemical, Israel Chemical Group and Shandong Xurui New Materials have obtained the license of DuPont BLUEDGE ( SBS Bromine) technology, to promote its application in the field of building energy efficiency.