| abstract |
Flame-retardant plastics from a polymer, preferably thermoplastics, and a halogenated benzimidazolone or halogenated benzimidazolone derivative, such as N, N'-di- (2-hydroxyethyl) -4, 5, 6, 7-tetrabromobenzimidazolone or 4,5,6,7-tetrabromobenzimidazolone calcium , as a flame retardant. These flame retardants are added to the polymer at any suitable manufacturing stage by simply mixing them together, and they must not react chemically with the polymer. |