发明名称 |
Manufacture of ethylene polymers in a two-zone tubular reactor at pressure above 500 bars |
摘要 |
Ethylene polymers are manufactured in a tubular reactor under high pressure and at high temperatures in the presence of polymerization initiators. The polymerization is carried out in two different zones of the reactor, a mixture of ethylene, oxygen and regulator being fed into the first zone and a co-initiator having a half-life temperature, measured in benzene, of above 140 DEG C being additionally fed into the second zone. The co-initiator may be a peroxide or a hydroperoxide. The melt index, or the haze and gloss of a film produced from the resulting ethylene polymer, can be varied advantageously through the choice of the co-initiator.
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申请公布号 |
US4076919(A) |
申请公布日期 |
1978.02.28 |
申请号 |
US19760741939 |
申请日期 |
1976.11.15 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
URBAN, FRIEDRICH;BUECHNER, OSKAR;HARTIG, ULRICH;GROPPER, HANS |
分类号 |
C08F2/00;C08F4/28;C08F10/00;C08F10/02;(IPC1-7):C08F4/28 |
主分类号 |
C08F2/00 |
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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