Flame retardants having good stability at the processing temperatures of high melting polymers are described. The flame retardants are halogen-containing bis-imides, for example, those of the formula ##STR1## R being defined in the specification.
本文描述了在高熔点聚合物加工温度下具有良好稳定性的阻燃剂。这些阻燃剂是含卤素的
双咪唑,例如,公式##STR1##中定义的R。