Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive that is a cross-linkable polycarbonate resin containing a photoactive group derived from a dihydroxybenzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.
本发明公开了在低温下具有更好阻燃性能和良好延展性的聚合物混合物。这种混合物由 (A) 光活性添加剂和 (B) 聚合物
树脂组成,前者是一种可交联的聚
碳酸酯
树脂,含有由二羟基
二苯甲酮衍生的光活性基团;后者与光活性添加剂不同。添加剂可以是化合物、低聚物或聚合物。当暴露在紫外线下时,光活性添加剂和聚合物
树脂之间会发生交联,从而增强耐
化学性和阻燃性,同时保持延展性。