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公开(公告)号：US5698642A
公开(公告)日：1997-12-16
申请号：US684411
申请日：1996-07-19
申请人： Gabriele Govoni , Roberto Rinaldi , Massimo Covezzi , Paolo Galli
发明人： Gabriele Govoni , Roberto Rinaldi , Massimo Covezzi , Paolo Galli
IPC分类号： B01J8/18 , B01J8/38 , B01J19/24 , C08F2/00 , C08F2/34 , C08F10/00 , C08F110/06 , C08F210/16
CPC分类号： C08F10/00 , B01J19/2435 , B01J8/1863 , B01J8/388 , C08F110/06 , C08F210/16 , Y10S526/901
摘要： Process for gas-phase polymerization carried out in two interconnected polymerization zones, to which one or more .alpha.-olefins CH.sub.2 .dbd.CHR are fed in the presence of catalyst under reaction conditions and from which the polymer product is discharged. The process is characterized in that the growing polymer flows through a first polymerization zone under fast fluidization conditions, leaves said first zone and enters a second polymerization zone through which it flows in a densified form under the action of gravity, leaves said second zone and is reintroduced into the first polymerization zone, thus establishing a circulation of polymer around the two polymerization zones. The novel process allows olefins to be polymerized in the gas phase with high productivity per unit volume of the reactor without incurring the problems of the fluidized-bed technologies of the known state of the art.
摘要翻译： 在两个相互连接的聚合区中进行气相聚合的方法，在催化剂存在下，在反应条件下将一种或多种α-烯烃CH 2 = CHR加入其中，聚合物产物从其中排出。 该方法的特征在于，生长的聚合物在快速流化条件下流过第一聚合区，离开所述第一区并进入第二聚合区，通过该第二聚合区，其在重力作用下以致密化形式流动，离开所述第二区，并且是 重新引入第一聚合区，从而建立聚合物周围两个聚合区的循环。 该新方法允许烯烃在气相中以每单位体积的反应器的高生产率聚合，而不会引起现有技术的流化床技术的问题。
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公开(公告)号：US5411994A
公开(公告)日：1995-05-02
申请号：US973193
申请日：1992-11-06
IPC分类号： C08F255/00 , C08F291/18 , C08J9/36 , C08F255/02 , C08F255/04 , C08F255/08
CPC分类号： C08F291/185 , C08F255/00
摘要： Disclosed are graft copolymers of polyolefins and a method of preparing said graft copolymers. The method comprises irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.
摘要翻译： 公开了聚烯烃的接枝共聚物和制备所述接枝共聚物的方法。 该方法包括照射大量的烯烃聚合物颗粒，然后用液体形式用乙烯基单体处理颗粒物质。 在整个过程中保持非氧化环境，同时存在通过照射在烯烃聚合物中产生的自由基，从而防止聚合物的降解。 在最后的步骤中，残留的自由基失活，并且除去任何未反应的单体。
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3.发明授权Polypropylene compositions having improved impact strength properties at low temperatures and process for preparing same 失效在低温下具有改进的冲击强度性能的聚丙烯组合物及其制备方法
公开(公告)号：US4521566A
公开(公告)日：1985-06-04
申请号：US434110
申请日：1982-10-13
申请人： Paolo Galli , Mario Spataro
发明人： Paolo Galli , Mario Spataro
IPC分类号： C08L23/00 , C08F2/00 , C08F2/44 , C08F10/00 , C08F210/16 , C08F297/00 , C08F297/08 , C08L7/00 , C08L21/00 , C08L23/12 , C08L23/16 , C08L101/00
CPC分类号： C08F297/086 , C08L23/12 , C08L2205/02 , C08L2205/03 , C08L23/16 , C08L2308/00
摘要： Polypropylene compositions having high impact strength at low temperatures comprising as essential components:100 parts by weight of polypropylene having an isotacticity index >90,8-25 parts by weight of an amorphous copolymeric fraction (1) of ethylene-propylene soluble in xylene at 23.degree. C., containing 20-80% by weight of ethylene,2-10 parts by weight of an ethylene-propylene crystalline copolymeric fraction (2) having a crystallinity of the polyethylene type containing 50-90% by weight of ethylene;and in which the weight ratio between the total polymerized ethylene and fraction (1) is
摘要翻译： 在低温下具有高冲击强度的聚丙烯组合物作为必要组分：100重量份的全同立构规整度指数> 90的聚丙烯，8-25重量份可溶于二甲苯的乙烯 - 丙烯的无定形共聚物部分（1）23 含有20-80重量％的乙烯，2-10重量份具有聚乙烯类型的结晶度的乙烯 - 丙烯结晶共聚物部分（2）含有50-90重量％的乙烯; 并且其中总聚合乙烯和馏分（1）之间的重量比<1。 所述组合物通过聚合方法制备，所述聚合方法至少包括将丙烯均匀聚合成立构规整聚合物的步骤，以及随后在含有活性形式的卤化镁载体上的钛化合物的催化剂存在下聚合乙烯 - 丙烯混合物的步骤。
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公开(公告)号：US4298718A
公开(公告)日：1981-11-03
申请号：US622550
申请日：1975-10-14
申请人： Adolfo Mayr , Paolo Galli , Ermanno Susa , Giovanni Di Drusco , Ettore Giachetti
发明人： Adolfo Mayr , Paolo Galli , Ermanno Susa , Giovanni Di Drusco , Ettore Giachetti
IPC分类号： C08F4/00 , C08F4/02 , C08F4/16 , C08F4/60 , C08F4/64 , C08F4/654 , C08F4/657 , C08F10/00 , C08F10/02 , C08F110/02
CPC分类号： C08F10/00 , C08F4/022 , Y10S526/906
摘要： Catalysts useful in the polymerization of olefins, more particularly of ethylene and mixtures thereof with higher alpha-olefins and/or diolefins, are disclosed. The new catalysts are obtained by mixing a hydride or organometallic compound of a metal belonging to Groups I to III of the Mendelyeev Periodic System with the product obtained by contacting a titanium tetrahalide with a support comprising an anhydrous magnesium or zinc halide in an active form, under particular conditions.
摘要翻译： 公开了可用于烯烃聚合，尤其是乙烯聚合的催化剂及其与高级α-烯烃和/或二烯烃的混合物。 通过将属于门多利夫定期系统的第I至III族金属的氢化物或有机金属化合物与通过使四卤化钛与包含活性形式的无水镁或锌的卤化物的载体接触而获得的产物来获得新的催化剂， 在特定条件下。
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公开(公告)号：US5652281A
公开(公告)日：1997-07-29
申请号：US342971
申请日：1994-11-21
IPC分类号： C08F255/00 , C08F291/18 , C08F255/02 , C08F255/04 , C08F255/08 , C08F255/10
CPC分类号： C08F291/185 , C08F255/00
摘要： Disclosed are graft copolymers of polyolefins and a method of preparing the graft copolymers. The method includes irradiating a mass of olefin polymer particles and thereafter treating the mass of particles with a vinyl monomer in liquid form. A nonoxidizing environment is maintained throughout the process while free radicals produced in the olefin polymer by the irradiation are present, thereby preventing degradation of the polymer. In a final step, residual free radicals are deactivated, and any unreacted monomer is removed.
摘要翻译： 公开了聚烯烃的接枝共聚物和制备接枝共聚物的方法。 该方法包括照射大量的烯烃聚合物颗粒，然后用液体形式用乙烯基单体处理颗粒物质。 在整个过程中保持非氧化环境，同时存在通过照射在烯烃聚合物中产生的自由基，从而防止聚合物的降解。 在最后的步骤中，残留的自由基失活，并且除去任何未反应的单体。
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6.发明授权
公开(公告)号：US4111835A
公开(公告)日：1978-09-05
申请号：US724362
申请日：1976-09-17
申请人： Giorgio Foschini , Nicolino Fiscelli , Paolo Galli
发明人： Giorgio Foschini , Nicolino Fiscelli , Paolo Galli
摘要： Supported catalysts for the high-yield polymerization of olefins to polymers which occur in spheroidal form are disclosed. The catalysts are prepared from starting components which comprise (a) organometallic compounds of metals belonging to Groups II or III of the Mendelyeev Periodic Table and (b) a product obtained by reacting a halogenated Ti compound with a Mg hydrate chloride in the form of spheroidal particles having controlled dimensions comprised between 10 and 70 microns.
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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％。
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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
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％。
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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
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。
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10.发明授权
公开(公告)号：US3953414A
公开(公告)日：1976-04-27
申请号：US524258
申请日：1974-11-15
IPC分类号： C08F4/02 , C08F10/00 , C08F210/00 , C08F212/00
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。
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