It is shown by recent published literature that the so-called BC-8 block PP is not a block copolymer indeed but a polymer alloy which consists of homopolypropylene,EPR and polyethylene with a few propylene segments.

• 近年结构分析结果发现BC - 8嵌段聚丙烯并非嵌段物 ,而是由均聚聚丙烯、EPR(乙丙橡胶 )以及聚乙烯 (链上有少量丙烯单元但并非嵌段物 )三者组成的高分子合金。