Non-crosslinked powdered butadiene-acrylonitrile rubber with better properties could be prepared using coagulant compoun采用一价钠盐、二价镁盐和二价钙盐的复合凝聚剂和有机酸盐与硅油的复合隔离剂可制得性能较好的非交联型粉末丁腈橡胶。