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24 条记录 (耗时 0.017 秒)

    Thermoplastic rubbers and process for preparing same
    1.
    发明授权
    Thermoplastic rubbers and process for preparing same 失效

    公开(公告)号：US4340704A

    公开(公告)日：1982-07-20

    申请号：US145360

    申请日：1980-04-30

    申请人： Italo Borghi ,  Sergio Foschi ,  Paolo Galli

    发明人： Italo Borghi ,  Sergio Foschi ,  Paolo Galli

    IPC分类号： C08F4/02 ,  C08F10/00 ,  C08F4/76

    CPC分类号： C08F4/022 ,  C08F10/00

    摘要： Thermoplastic rubbers comprising propylene-ethylene copolymers containing from 50% to 90% by weight of propylene and showing, on X-rays examination in the unoriented state, crystallinity of the polypropylene and/or polyethylene type are disclosed.Also disclosed is a method for preparing the thermoplastic rubbers by polymerizing mixtures of propylene and ethylene in the presence of a catalyst obtained by mixing(A) a catalyst-forming component which is (a) an addition and/or substitution product of an electron-donor compound (or a Lewis base) with an Al-trialkyl compound, or (b) the addition reaction product of an electron-donor compound with an Al-alkyl compound containing two or more aluminum atoms bound to each other through an oxygen or nitrogen atom, component (A) being further characterized in that it is prepared by reacting 1.0 mole of an Al-alkyl compound with 0.1-1.0 mole of a Lewis base which is an ester of an organic or inorganic oxygenated acid, a polyamine compound, or any Lewis base other than said esters and polyamine compounds, provided that, in the latter case, component (B) of the catalyst is a complex of a halogenated titanium compound with a polyamine;and(B) a catalyst-forming component which is the product obtained by contacting an addition compound of a di-, tri-, or tetravalent titanium compound and an electron-donor compound with a carrier consisting of or comprising an anhydrous magnesium dihalide, component (B) being further characterized in that, in its X-rays powder spectrum, a halo appears in place of the most intense diffraction line characteristic of the X-rays powder spectrum of the normal, non-activated magnesium dihalide and, furthermore, in that the amount of Ti compound contained in component (B) and expressed as Ti, is less than 0.3 g. per mole of the total amount of the electron-donor compound used in preparing the catalyst and in that the molar ratio of said Ti compound to the Al-alkyl compound is comprised between 0.001 and 0.1.

    Thermoplastic rubbers and process for preparing same
    2.
    发明授权
    Thermoplastic rubbers and process for preparing same 失效

    公开(公告)号：US4298721A

    公开(公告)日：1981-11-03

    申请号：US16558

    申请日：1979-03-01

    申请人： Italo Borghi ,  Sergio Foschi ,  Paolo Galli

    发明人： Italo Borghi ,  Sergio Foschi ,  Paolo Galli

    IPC分类号： C08F4/00 ,  C08F4/02 ,  C08F4/60 ,  C08F4/64 ,  C08F4/649 ,  C08F4/651 ,  C08F4/654 ,  C08F10/00 ,  C08F210/00 ,  C08F210/02 ,  C08F210/16 ,  C08F10/06

    CPC分类号： C08F10/00 ,  C08F4/022 ,  C08F210/06

    摘要： Thermoplastic rubbers comprising propylene-ethylene copolymers containing from 50% to 90% by weight of propylene and showing, on X-rays examination in the unoriented state, crystallinity of the polypropylene and/or polyethylene type are disclosed.Also disclosed is a method for preparing the thermoplastic rubbers by polymerizing mixtures of propylene and ethylene in the presence of a catalyst obtained by reacting.(A) a catalyst-forming component which is (a) an addition and/or substitution product of an electron-donor compound (or a Lewis base) with an Al-trialkyl compound, or (b) the addition reaction product of an electron-donor compound with an Al-alkyl compound containing two or more aluminum atoms bound to each other through an oxygen or nitrogen atom, component (A) being further characterized in that it is prepared by reacting 1.0 mole of a Al-alkyl compound with 0.1-1.0 mole of a Lewis base which is an ester of an organic or inorganic oxygenated acid, a polyamine compound, or any Lewis base other than said esters and polyamine compounds, provided that, in the latter case, component (R) of the catalyst is a complex of a halogenated titanium compound with a polyamine; and(B) a catalyst-forming component which is the product obtained by contacting an addition compound of a di-, tri-, or tetravalent titanium compound and an electron-donor compound with a carrier consisting of or comprising an anhydrous magnesium dihalide, component (B) being further characterized in that, in its X-rays powder spectrum, a halo appears in place of the most intense diffraction line characteristic of the X-rays powder spectrum of the normal, non-activated magnesium dihalide and, furthermore, in that the amount of Ti compound contained in component (B) and expressed as Ti, is less than 0.3 g. per mole of the total amount of the electron-donor compound used in preparing the catalyst and in that the molar ratio of said Ti compound to the Al-alkyl compound is comprised between 0.001 and 0.1.

    Solid component of catalyst for the (co) polymerization of ethylene
    4.
    发明授权
    Solid component of catalyst for the (co) polymerization of ethylene 失效
    用于乙烯（共）聚合的催化剂的固体组分

    公开(公告)号：US5227439A

    公开(公告)日：1993-07-13

    申请号：US914585

    申请日：1992-07-20

    申请人： Luciano Luciani ,  Maddalena Pondrelli ,  Renzo Invernizzi ,  Italo Borghi

    发明人： Luciano Luciani ,  Maddalena Pondrelli ,  Renzo Invernizzi ,  Italo Borghi

    IPC分类号： C08F10/02

    CPC分类号： C08F10/02

    摘要： A solid component of catalyst for the (co)polymerization of ethylene is composed of a silica carrier and a catalytically active part which includes titanium, magnesium, chlorine and also alkoxy groups, and is obtained: by suspending an activated silica in an ethanolic solution of magnesium chloride; by contact of the suspension with an alkoxy or halogen alkoxyde of titanium and with a silicon halide; by eliminating the ethanol from the resulting suspension in order to recover a solid matter; and by making this solid react with an aluminium alkyl chloride.

    摘要翻译： 用于乙烯（共）聚合的催化剂的固体组分由二氧化硅载体和包含钛，镁，氯以及烷氧基的催化活性部分组成，其通过将活性二氧化硅悬浮在乙醇溶液 氯化镁; 通过悬浮液与钛的烷氧基或卤素烷氧基化物与卤化硅接触; 通过从所得悬浮液中除去乙醇以回收固体物质; 并使该固体与烷基氯化铝反应。

    Process for the continuous bulk production of high impact vinylaromatic (co)polymers
    5.
    发明授权
    Process for the continuous bulk production of high impact vinylaromatic (co)polymers 失效
    连续生产高冲击性乙烯（CO）聚合物的方法

    公开(公告)号：US5166260A

    公开(公告)日：1992-11-24

    申请号：US486241

    申请日：1990-02-28

    申请人： Claudio Buonerba ,  Savino Matarrese ,  Franco Balestri ,  Italo Borghi

    发明人： Claudio Buonerba ,  Savino Matarrese ,  Franco Balestri ,  Italo Borghi

    IPC分类号： B01J19/18 ,  C08F2/02 ,  C08F279/00 ,  C08F279/02 ,  C08F279/04

    CPC分类号： C08F279/02 ,  B01J19/1862 ,  C08F279/04 ,  B01J2219/00159 ,  B01J2219/00166 ,  B01J2219/185

    摘要： Process for the continuous bulk production of high impact vinylaromatic copolymers in which the vinylaromatic monomer, and if present, a comonomer selected from the group consisting of acrylonitrile, methacrylonitrile, acrylic acid, methacrylic acid and their alkyl- or cyclo-alkyl-esters containing from 1 to 8 carbon atoms in the alkyl group, the rubber, a part of the diluent solvent and the catalyst are premixed in a premixer at a temperature under 100.degree. C. and fed to a plug-flow agitated tubular reactor, which is divided into several stages or zones. The excess mixture is recycled to the premixer and the remaining part of the diluent solvent is injected into the top of the reactor to prevent the formation of incrustations. In the first zone of the reactor, the temperature and the residence time of the mixture are regulated so to have the halving the catalyst life.The polymerization is carried on in the following zones of the reactor until at least the 40% by weight of solids and it is eventually brought to conclusion in one or more consecutive tubular reactors like the first one. The reactors are set in series.

    Supported catalyst for ethylene polymerization and the copolymerization of ethylene with alpha-olephins, its preparation and use
    10.
    发明授权
    Supported catalyst for ethylene polymerization and the copolymerization of ethylene with alpha-olephins, its preparation and use 失效
    用于乙烯聚合和乙烯与α-烯烃共聚的负载催化剂，其制备和用途

    公开(公告)号：US5278117A

    公开(公告)日：1994-01-11

    申请号：US666587

    申请日：1991-03-08

    申请人： Luciano Luciani ,  Renzo Invernizzi ,  Francesco Masi ,  Maddalena Pondrelli ,  Mario Polesello ,  Italo Borghi

    发明人： Luciano Luciani ,  Renzo Invernizzi ,  Francesco Masi ,  Maddalena Pondrelli ,  Mario Polesello ,  Italo Borghi

    IPC分类号： C08F4/658 ,  C08F4/60 ,  C08F4/646 ,  C08F4/652 ,  C08F4/654 ,  C08F4/655 ,  C08F4/6592 ,  C08F10/00 ,  C08F10/02

    CPC分类号： C08F10/00 ,  Y10S526/909

    摘要： A supported Ziegler-Natta catalyst active in ethylene polymerization and in the copolymerization of ethylene with alpha-olefins consists of:(A) a cocatalyst in the form of an organometallic compound of aluminium, and(B) a solid catalyst component obtained by:(i) impregnating a granular solid support with a solution of a titanium alcoholate and magnesium chloride in a liquid aliphatic hydrocarbon, followed by evaporation of the hydrocarbon solvent;(ii) impregnating the support treated in (i) with a solution of magnesium chloride in a liquid aliphatic ester, followed by evaporation of the ester solvent; and(iii) activating the support treated in (ii) by contact with an alkyl aluminium halide.In a preferred embodiment, measured quantities of a silicon halide are introduced in stage (i) and/or (ii), this considerably improving catalytic activity. In a particular embodiment, zirconium or hafnium are introduced into the solid catalyst component (B) in addition to titanium, to obtain catalysts able to produce polyethylenes with a widened molecular weight distribution.

    摘要翻译： 在乙烯聚合中和乙烯与α-烯烃的共聚合中的支持的齐格勒 - 纳塔催化剂由以下组成：（A）铝的有机金属化合物形式的助催化剂，和（B）通过以下方法获得的固体催化剂组分： i）用钛醇铝和氯化镁的溶液在液体脂族烃中浸渍颗粒状固体载体，然后蒸发烃溶剂; （ii）用（i）中处理的载体浸渍在液体脂族酯中的氯化镁溶液，然后蒸发酯溶剂; 和（iii）通过与烷基铝卤化物接触来活化（ii）中处理的载体。 在优选的实施方案中，在阶段（i）和/或（ii）中引入卤化硅的测量量，这显着提高了催化活性。 在一个具体实施方案中，除了钛之外，还将锆或铪引入固体催化剂组分（B）中，以获得能够生产具有扩大的分子量分布的聚乙烯的催化剂。