3Sven B. Nitrile rubber with easy processability, excellent fluid- ity, and excellent mechanical profile : KR,2011049698A[ P]. 2011 -05 - 12.
4Werner O. The Invention relates to improved methods of poly- merization and reprocessing of specific nitrile rubbers which are characterized by a particular calcium and chloride content and have a particularly good storage stability: EP,2152760B1 [ P]. 2011 -05 -04.
5Mikhajlovna B N, Aleksandrovna G I. Method of obtaining bu- tadiene-nitrile rubber : RU,2342404 [ P ]. 2008 - 12 - 27.