There is disclosed a polycarbonate and polysiloxane block copolymer includes 1 to 50 percent by mass of a siloxane portion derived from a polysiloxane block represented by the following formula (I) and 50 to 99 percent by mass of a carbonate portion derived from a polycarbonate block represented by the following formula (II). There can be provided a novel polycarbonate and polysiloxane block copolymer capable of readily imparting excellent flame retardance, and a flame retardant resin composition.
本发明公开了一种聚
碳酸酯和聚
硅氧烷嵌段共聚物,其中包括 1%至 50%(质量百分比)的
硅氧烷部分(由下式(I)代表的聚
硅氧烷嵌段衍生而来)和 50%至 99%(质量百分比)的
碳酸酯部分(由下式(II)代表的聚
碳酸酯嵌段衍生而来)。本发明提供了一种新型聚
碳酸酯和聚
硅氧烷嵌段共聚物,该共聚物能够轻易地赋予其优异的阻燃性,还提供了一种阻燃
树脂组合物。