-
公开(公告)号:US5571879A
公开(公告)日:1996-11-05
申请号:US595520
申请日:1996-02-01
申请人: Makoto Jimbo , Mamoru Yoshikawa , Shinjiro Suga , Yoshihisa Yamaguchi , Masahiro Niwa , Eiko Kobayashi , Kunimichi Kubo
发明人: Makoto Jimbo , Mamoru Yoshikawa , Shinjiro Suga , Yoshihisa Yamaguchi , Masahiro Niwa , Eiko Kobayashi , Kunimichi Kubo
CPC分类号: C08F10/00 , Y10S526/901
摘要: In the polymerization of olefins with a vapor phase fluidized bed reactor, the improvement comprises the steps of feeding seed polymer particles and the reaction is then started after feeding an organoaluminum compound on a prescribed basis, thereby avoiding the formation of sheet-like polymer in the initial period of the reaction and the lowering of the bulk density of the product polymer.
摘要翻译: 在用气相流化床反应器进行烯烃聚合反应时,改进之处包括进料种子聚合物颗粒的步骤,然后在规定的基础上加入有机铝化合物之后开始反应,从而避免了在 反应的初始阶段和产物聚合物的堆积密度的降低。
-
公开(公告)号:US5541269A
公开(公告)日:1996-07-30
申请号:US174270
申请日:1993-12-28
CPC分类号: C08F10/00 , Y10S526/901
摘要: In the polymerization of olefins using a catalyst comprising an organoaluminum compound and solid catalyst components containing titanium and/or vanadium; and magnesium in a vapor phase fluidized bed, the formation of sheet-like polymer and other abnormal conditions in the initial stage of the polymerization are avoided by means of previous drying of the reactor by feeding an organoaluminum compound prior to the feeding of seed polymer, the quantity of said organoaluminum compound being calculated by the following equation (I):A=k.multidot.V.sup. 2/3 (I)wherein A is the feed quantity (mol) of the organoaluminum compound, k is a coefficient (mol/m.sup.2) in the range from 0.15 to 4, and V is the volume (m.sup.3) of the whole system including gas circulation pipings.
摘要翻译: 在使用包含有机铝化合物的催化剂和含有钛和/或钒的固体催化剂组分的烯烃聚合中; 和镁在气相流化床中,在聚合初始阶段形成片状聚合物和其它异常条件通过在进料种子聚合物之前通过进料有机铝化合物先前干燥反应器来避免, 所述有机铝化合物的量通过下式(I)计算:A = kxV + E,fra 2/3 + EE(I)其中A是有机铝化合物的进料量(mol),k是系数 mol / m2)在0.15至4的范围内,V是包括气体循环管道在内的整个系统的体积(m3)。
-
公开(公告)号:US5525687A
公开(公告)日:1996-06-11
申请号:US328083
申请日:1994-10-24
申请人: Yoshihisa Yamaguchi , Shinjiro Suga , Masatoshi Morikawa , Kunimichi Kubo , Motokazu Watanabe , Yasuhiko Sano
发明人: Yoshihisa Yamaguchi , Shinjiro Suga , Masatoshi Morikawa , Kunimichi Kubo , Motokazu Watanabe , Yasuhiko Sano
CPC分类号: C08F10/00 , Y10S526/901
摘要: A process for producing polyolefin with a vapor-phase fluidized-bed reactor, wherein the reaction is started after filling the reactor with particles which contain moisture and/or molecular oxygen and can form a fluidized bed in order to prevent the formation of molten resin which is liable to occur at the start of the reaction and to attain a smooth operation of the reactor.
摘要翻译: 一种用气相流化床反应器生产聚烯烃的方法,其中反应开始于含有水分和/或分子氧的颗粒填充反应器之后,可形成流化床,以防止形成熔融树脂, 在反应开始时容易发生,从而使反应器顺利运行。
-
公开(公告)号:US5385991A
公开(公告)日:1995-01-31
申请号:US844590
申请日:1992-03-27
申请人: Yoshihisa Yamaguchi , Shinjiro Suga , Masatoshi Morikawa , Kunimichi Kubo , Motokazu Watanabe , Yasuhiko Sano
发明人: Yoshihisa Yamaguchi , Shinjiro Suga , Masatoshi Morikawa , Kunimichi Kubo , Motokazu Watanabe , Yasuhiko Sano
CPC分类号: C08F10/00 , Y10S526/901
摘要: A process for producing polyolefin with a vapor-phase fluidized-bed reactor, wherein the reaction is started after filling the reactor with particles which contain moisture and/or molecular oxygen and can form a fluidized bed in order to prevent the formation of molten resin which is liable to occur at the start of the reaction and to attain a smooth operation of the reactor.
摘要翻译: PCT No.PCT / JP91 / 01010 Sec。 371日期:1992年3月27日 102(e)1992年3月27日PCT PCT 1991年7月26日PCT公布。 出版物WO92 / 02563 日本1992年2月20日。一种用气相流化床反应器生产聚烯烃的方法,其中反应开始于含有水分和/或分子氧的颗粒填充反应器之后,可形成流化床,以便 防止在反应开始时易于发生的熔融树脂的形成,并使反应器顺利地进行操作。
-
-
-