公开(公告)号：US06228956B1

公开(公告)日：2001-05-08

申请号：US08476063

申请日：1995-06-07

申请人： Massimo Covezzi ,  Paolo Galli ,  Gabriele Govoni ,  Roberto Rinaldi

发明人： Massimo Covezzi ,  Paolo Galli ,  Gabriele Govoni ,  Roberto Rinaldi

IPC分类号： C08F444

CPC分类号： C08F10/00 ,  C08F210/16 ,  C08F4/6492 ,  C08F2/001

摘要： Process for the gas-phase polymerization of olefins of the formula CH2═CHR where R is hydrogen or an alkyl or aryl radical with 1 to 8 carbon atoms carried out in one or more reactors having a fluidized or mechanically agitated bed, using a catalyst obtained by reaction of a titanium halide or haloalcoholate and optionally an electron-donor compound supported on an active Mg-dihalide with an Al-trialkyl compound and optionally an electron-donor compound, comprising the steps of: a) contacting the catalyst components in the absence of polymerizable olefin or optionally in the presence of said olefin in an amount to from up to 3 g per g of solid catalyst component; b) prepolymerizing propylene or mixtures of propylene with ethylene or an alpha-olefin to form a propylene polymer having an insolubility in xylene of at least 60% by weight, in an amount of from 5 g of polymer per g of solid catalyst component to 10% by weight of the final catalyst yield; and c) polymerizing one or more CH2═CHR olefins in the gas phase in the presence of the prepolymer-catalyst system obtained in b), while maintaining in the gas phase an alkane in a molar concentration with respect to the total gases of from 20 to 90%.

摘要翻译： 式CH 2 = CHR的烯烃的气相聚合方法，其中R是氢或具有1至8个碳原子的烷基或芳基，在具有流化床或机械搅拌床的一个或多个反应器中进行，使用获得的催化剂 通过卤化钛或卤代醇化物和任选的负载在活性二卤化镁上的电子给体化合物与Al-三烷基化合物和任选的电子给体化合物的反应，包括以下步骤：a）在不存在的情况下使催化剂组分接触 的可聚合烯烃或任选地在所述烯烃存在下的量为每克固体催化剂组分高达3克; b）将丙烯或丙烯与乙烯或α-烯烃的混合物预聚合以形成具有不溶性的丙烯聚合物 在二甲苯中至少60重量％，每克固体催化剂组分为5克聚合物至最终催化剂产率的10重量％; 在气相中，在b）中得到的预聚物 - 催化剂体系存在下，在气相中聚合一种或多种CH 2 = CHR烯烃，同时在气相中保持相对于总气体的摩尔浓度为20〜 90％。

公开(公告)号：US5733987A

公开(公告)日：1998-03-31

申请号：US30654

申请日：1993-03-12

申请人： Massimo Covezzi ,  Paolo Galli ,  Gabriele Govoni ,  Roberto Rinaldi

发明人： Massimo Covezzi ,  Paolo Galli ,  Gabriele Govoni ,  Roberto Rinaldi

IPC分类号： C08F2/34 ,  C08F4/60 ,  C08F4/642 ,  C08F4/654 ,  C08F10/00 ,  C08F10/02

CPC分类号： C08F10/02 ,  Y10S526/901

摘要： Process for the gas-phase polymerization of ethylene and ethylene mixtures with .alpha.-olefins CH.sub.2 .dbd.CHR in the presence of a high activity catalyst comprising a titanium compound containing at least one Ti-halogen bond, supported on magnesium dichloride in active form said process comprising the steps of: (a) contacting the catalyst component; (b) prepolymerizing ethylene or ethylene mixtures with .alpha.-olefins in order to produce a polymer amount of from approximately 5 g per g of solid component, up to an amount corresponding to about 10% of the final catalyst yield; (c) polymerizing ethylene or ethylene mixtures with .alpha.-olefins in the gas-phase, in the presence of the prepolymer-catalyst system obtained in (b), while maintaining in the gas phase a molar concentration concentration of the alkane comprised between 20 and 90% with respect to the total gases.

摘要翻译： 在含活性形式负载在二氯化镁上的含有至少一个Ti-卤键的钛化合物的高活性催化剂存在下，用α-烯烃CH 2 = CHR气相聚合乙烯和乙烯混合物的方法，所述方法包括 步骤：（a）使催化剂组分接触; （b）将乙烯或乙烯混合物与α-烯烃预聚合，以产生约5g / g固体组分的聚合物量，至多相当于最终催化剂产率的约10％的量; （c）在（b）中获得的预聚物 - 催化剂体系的存在下，在气相中与α-烯烃聚合乙烯或乙烯混合物，同时在气相中保持烷烃的摩尔浓度浓度在20和 相对于总气体为90％。

公开(公告)号：US4390454A

公开(公告)日：1983-06-28

申请号：US285961

申请日：1981-07-23

申请人： Illaro Cuffiani ,  Paolo Galli ,  Umberto Zucchini

发明人： Illaro Cuffiani ,  Paolo Galli ,  Umberto Zucchini

IPC分类号： C08F4/64 ,  C12N9/18 ,  C12P33/00 ,  C12R1/025

CPC分类号： C12R1/025 ,  C12N9/18 ,  Y10S435/824

摘要： There are disclosed components of catalysts for polymerizing ethylene and mixtures of ethylene with alpha-olefins comprising the reaction product of (A) a magnesium compound, such as Mg-chloride, Mg-alcoholate or a Grignard compound, with (B) a titanium, vanadium or zirconium compound having at least two metal-oxygen bonds, such as a tetra-alcoholate, and with (C) a halogenated compound of metals of B, such as Ti tetrachloride.According to an aspect of the invention, the reaction product (A)+(B), before being reacted with (C), is treated with a silicum compound having a halogenating and/or reducing action.The catalysts according to the invention are suitable for obtaining ethylene polymers having a broad distribution of molecular weights.

摘要翻译： 公开了用于聚合乙烯的催化剂的组分和乙烯与α-烯烃的混合物的组分，其包括（A）镁化合物如Mg-氯化物，Mg-醇化物或格氏化合物与（B）钛的反应产物， 具有至少两个金属 - 氧键的钒或锆化合物，例如四醇化物，和（C）B的金属卤化化合物如四氯化钛。 根据本发明的一个方面，在与（C）反应之前，将反应产物（A）+（B）用具有卤化和/或还原作用的硅酸盐化合物处理。 根据本发明的催化剂适用于获得分子量分布广泛的乙烯聚合物。

公开(公告)号：US3953414A

公开(公告)日：1976-04-27

申请号：US524258

申请日：1974-11-15

申请人： Paolo Galli ,  Giovanni Di Drusco ,  Saverio De Bartolo

发明人： Paolo Galli ,  Giovanni Di Drusco ,  Saverio De Bartolo

IPC分类号： C08F4/02 ,  C08F10/00 ,  C08F210/00 ,  C08F212/00

CPC分类号： C08F10/00 ,  C08F4/022

摘要： There are disclosed highly active supported catalysts for the polymerization of olefins to polymers in the form of spheroidal particles which neither break nor cake when subjected to compression. The supported catalysts are prepared by mixingA. a catalyst-forming component which is an organometallic compound of a metal belonging to Group II or III of the Mendelyeev Periodic TableWithB. a supported catalyst-forming component which is the product consisting of a carrier comprising an anhydrous Mg halide and of a halogenated Ti compound chemically combined with the carrier or dispersed on the same, said product being in the form of spherical or spheroidal particles of a size comprised between 1 and 350 microns and having characteristics as set forth in detail hereinbelow.

摘要翻译： 公开了用于将烯烃聚合成以球形颗粒形式的聚合物的高活性负载催化剂，其在经受压缩时既不破裂也不破碎。 负载型催化剂是通过将A.一种催化成分组分（其为金属的金属化合物）与Bentonlyeev周期表的II或III族与B组成。作为载体的产品的支持的催化成分组分 包含无机卤化镁和与载体化学结合或分散在其上的卤化Ti化合物，所述产物为尺寸为1至350微米的球形或球形颗粒形式，具有详细阐述的特征 在下文中。