发明名称 |
KONTINUERLIG BLOKK-KOPOLYMERISASJONS-FREMGANGSMAATE. |
摘要 |
<p>A process for the preparation of ethylene-propylene block copolymers at high catalyst productivity rates resulting in polymer products having improved impact strength-polymerized ethylene content relationship. The improvement is obtained by reacting preformed propylene prepolymer still containing active catalyst residues with ethylene and propylene in a vapor phase reaction zone in the presence of additional aluminum trialkyl catalyst component introduced to the reaction zone. The polymer produced by the process exhibits excellent physical and mechanical properties.</p> |
申请公布号 |
NO159389(B) |
申请公布日期 |
1988.09.12 |
申请号 |
NO19810001162 |
申请日期 |
1981.04.03 |
申请人 |
EL PASO PRODUCTS COMPANY |
发明人 |
ZUKOWSKI, EDWARD AUGUST |
分类号 |
C08F4/00;C08F4/60;C08F297/00;C08F297/08;(IPC1-7):C08F297/08 |
主分类号 |
C08F4/00 |
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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