发明名称 |
Process for treating olefinic polymers with steam |
摘要 |
The halogen and organic substances content of the catalyst residues in alpha-olefin crystalline (co)-polymers prepared with catalysts obtained by reacting: (a) a metallorganic Al compound with (b) a Ti compound supported on a Mg halide, in which an electron-donor is combined with the Ti compound and/or the Mg compound and optionally with (a), are reduced by passing a stream of superheated steam (optionally mixed with other gaseous fluids) over the polymer in powder form at a temperature of 105 DEG -140 DEG C. and under a pressure of 0.1-10 kg/cm2 gauge, the steam/polymer ratio being comprised between 0.10 and 1 by weight.
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申请公布号 |
US4332933(A) |
申请公布日期 |
1982.06.01 |
申请号 |
US19800165017 |
申请日期 |
1980.07.01 |
申请人 |
MONTEDISON S.P.A. |
发明人 |
DI DRUSCO, GIOVANNI;RINALDI, ROBERTO;GOVONI, GABRIELE |
分类号 |
F26B3/06;C08F6/02;F26B3/16;(IPC1-7):C08F6/00 |
主分类号 |
F26B3/06 |
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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