88497-56-7 Usage
Uses
Used in Engineering Plastics Industry:
Brominated polystyrene is used as a flame retardant for engineering plastics such as polyesters (PET, PBT, PCT) and polyamides (nylons). It provides outstanding thermal stability and electrical performance, making it an ideal choice for high-temperature applications and enhancing the flame retardancy of these plastics.
Used in Flame Retardancy Applications:
Brominated polystyrene is used as a flame retardant in various industries to improve the fire safety of materials. Its high flame retardancy and low toxicity make it a preferred choice for applications requiring enhanced fire resistance while maintaining the integrity and performance of the material.
Production method
A brominated polystyrene product made by the process comprising:pretreating a solution of a polystyrene reactant comprising from about five to about 20 percent by weight of said polystyrene reactant, in a halogenated hydrocarbon solvent with at least about 0.1 percent by weight of an additive to suppress halogenation of the polystyrene backbone, prior to brominating the polystyrene in the presence of a catalyst;subsequently adding a metal halide bromination catalyst to said solution, capable of effecting bromination of the ring without causing crosslinking of the polystyrene;adding to said solution from about 1 to about 3.4 moles of a brominating agent, per mole of polystyrene repeating units;reacting said polystyrene with said brominating agent at a temperature of from about ?20° C. to about 50° C., and isolating the brominated polystyrene.
Check Digit Verification of cas no
The CAS Registry Mumber 88497-56-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,4,9 and 7 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 88497-56:
(7*8)+(6*8)+(5*4)+(4*9)+(3*7)+(2*5)+(1*6)=197
197 % 10 = 7
So 88497-56-7 is a valid CAS Registry Number.
