The Cl-EPR was obtained by chloride substitution reaction between chloride gas and EPR, and then coupling with anionic living polystyrene.

• 然后将用阴离子活性聚合制备的活性聚苯乙烯与之进行大分子偶联反应，依靠与电负性卤素原子相连的主链碳和增长的阴离子活性中心间的亲核反应制得乙丙橡胶-苯乙烯接枝共聚物。