发明名称 |
Process for preparing ethylene-alpha-olefin-nonconjugated polyene random copolymer, copolymer obtained thereby, and uses of the copolymer |
摘要 |
Disclosed is an ethylene-±-olefin-nonconjugated polyene random copolymer having such properties that (i) the copolymer contains units derived from ethylene (a) and units derived from the ±-olefin of 3 or more carbon atoms (b) in a molar ratio of 40/60 to 64/36 [(a)/(b)], (ii) the iodine value is 1 to 50, (iii) the intrinsic viscosity (·) is more than 0.3 dl/g and less than 5.0 10 dl/g, (iv) the intensity ratio D of T±² to T±± in the 13 C-NMR spectrum, T±²/T±± is not more than 0.5, (v) the B value is 1.00 to 1.50 and (vi) the glass transition temperature Tg is not higher than -50°C. Also disclosed is a vulcanizable rubber composition containing the random copolymer. A process of preparing this copolymer by using a metallocene catalyst containing a specified metallocene compound is also disclosed. The ethylene-±-olefin-nonconjugated polyene random copolymer and the rubber composition are excellent in mechanical strength, weathering resistance, ozone resistance, processability, low temperature flexibility and heat resistance.
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申请公布号 |
EP1323749(A2) |
申请公布日期 |
2003.07.02 |
申请号 |
EP20030004253 |
申请日期 |
1995.12.20 |
申请人 |
MITSUI CHEMICALS, INC. |
发明人 |
SAGANE, TOSHIHIRO;TSUTSUI, TOSHIYUKI;KAWASAKI, MASAAKI;OKADA, KEIJI;NAKAHAMA, HIDENARI;TOJO, TETSUO |
分类号 |
C08F210/18;C08F4/64;C08F4/659;C08F4/6592;C08L23/16;(IPC1-7):C08F210/18 |
主分类号 |
C08F210/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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