2Hussein F D,Lee K H, Bai X L.Process for reducing polymer build-up in recycle lines and heat exchanges during polymerization of alpha olefins[P].USA:US 5 625 012,1997.
3Tanaglia T.Preparation EPR in free-flowing form[P].EUR:EP 763 551,1997.
4Mueller P,kersting M.High flexible propylene-ethylene copolymers,their preparation and their use[P].EUR:EP 702 038,1996.
5Kawasaki M,Tsutsui T,Tojo T.Ethylene copolymer rubbers,vulcanizable rubber composition containing the copolymer rubber,and process for preparing the copolymer rubber[P].EUR:EP 751 156,1997.
6Tsutsui T,Kawasaki M,Nakahama H.Ethylene copolymer rubbers,their manufacture and their vulcanizable composition[P].JPN:JP 0 948 823,1997.
10Ravishankar. Process for polymerizing ethylene, higher alpha-olefin comonomer and dienes, especially vinyl norbornene polymers made using such processes and articles made from such polymers:US,6806336[P]. 2004-10-19.
