发明名称 |
MANUFACTURING METHOD FOR PROPYLENE POLYMER |
摘要 |
<p>An object is to develop a method for stably producing a propylene-based polymer together with inhibiting generation of an aggregated polymer, reducing a generation amount of fine powder, and thereby enhancing production efficiency. The present invention relates to a method for producing a propylene-based polymer, comprising polymerizing propylene or propylene and an ±-olefin except propylene in the presence of a catalyst using a horizontal polymerization reactor equipped with a stirrer rotating around a horizontal axis in the inside of the reactor by a continuous vapor-phase polymerization method in which heat of reaction is removed by heat of vaporization of liquefied propylene, wherein the reactor can set a plurality of area sections different in temperature in a horizontal axis direction in the inside of the reactor and at least one of the following requirements (A) and (B) is satisfied:
requirement (A): temperature difference ”T1 (°C) (= TÉ - T±) between temperature (T±) of an area section including an upstream end of the reactor and temperature (TÉ) of an area section including a downstream end thereof is 0.1 to 20°C;
requirement (B): temperature difference ”T2 (°C) (= Tx - Tz) between temperature (Tx) of an area section including a catalyst feed part and dew point (Tz) of mix gas in the reactor is 0 to 5°C.</p> |
申请公布号 |
EP2495260(A1) |
申请公布日期 |
2012.09.05 |
申请号 |
EP20100826887 |
申请日期 |
2010.10.29 |
申请人 |
JAPAN POLYPROPYLENE CORPORATION |
发明人 |
KOBAYASHI YOSHITAKA;NAKASHIMA TAKANORI;YUKAWA KIYOSHI;YAMADA YUSUKE;AOYAMA HAJIME;IWAI NOBUHIRO |
分类号 |
C08F2/34;C08F4/64;C08F10/06 |
主分类号 |
C08F2/34 |
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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