• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    There are disclosed new catalysts for the stereospecific polymerization of alpha-olefins having the formula CH2 = CHR in which R is an alkyl radical containing from l to 4 carbon atoms and the starting components of which comprise (a) a halogenated organometallic A1 compound and (b) reduction products of TiC14 comprising TiC13 in the crystalline beta form.
    公开号:SU843709A3
    申请号:SU762388804
    申请日:1976-08-06
    公开日:1981-06-30
    发明作者:Чеккин Джулиано；Лучани Лучано；Гризелли Пьер
    申请人:Монтэдисон С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    (54) METHOD FOR OBTAINING THE CATALYST COMPONENT FOR PROPILANE POLYMERIZATION
    one
    This invention relates to a process for the preparation of a catalyst component for the polymerization of propylene.
    Catalysts are known for the polymerization of olefins obtained from T i C 1d by reducing the product with alkyl aluminum halides and from organometallic aluminum compounds.
    The reaction between TiCl4 and alkylaluminum halide can be easily directed in such a way as to obtain a product in which titanium is found almost exclusively as a trivalent component. In order to obtain catalysts of high activity and stereospecificity in the polymerization of propylene and similar alpha-olefins, it is necessary that the obtained Ti L be contained in the reduced product in crdastal-. folic delta form. The crystal delta Form T i CIj can be directly obtained by direct reduction of T i C 1d using AlEtCIji as a reducing agent at relatively low temperatures or by heating the reduced products in which
    T | C 1c is in beta form to temperatures above 130 ° C.
    Still, even with a very large surface area of the catalytic components containing the delta form of TiCI (about 80-100), their activity is low. This low activity is called 1a by the presence of aluminum compounds in the reconstituted product,
    0 such as, for example, aluminum alkyl dihalides.
    To overcome this drawback, it was proposed to subject the reconstituted product to treatment with Lewis bases, for example, esters 2.
    five
    Treatment with Lewis bases is preferably subjected to TiCl in crystalline delta form.
    When the treatment is subjected to TI Ij
    0 in crystalline beta form or when T i C I, which is already in the delta form, but not subjected to activation by heating at 140-150 ° C, is then stereospecific
    5 catalyst is not high enough.
    The closest to the proposed technical essence and the achieved effect is the method of obtaining the catalyst component for
    Date: 03/05/2001
    Number of pages: 2
    Previous document: SU 843709
    Next Document: SU 843711
    权利要求:
    Claims (2)
    [1]
    The milling cutter consists of a supporting part 1 and a disc
    [2]
    2. The supporting part is attached to the spindle 3 by means of bolts or screws 4 and has an annular outer part 5 located on the periphery of the disk 2. On the outer part 5 there is an annular projection 6 with a flat surface in which the supporting part 1 abuts. into the hole of the supporting part 'by the central protrusion 7 and fastens on it with the help of a screw 8. A key 9 serves for transmitting the rotation. The cutting elements 10 are fixed on the periphery of the disk 2.
    The device works as follows.
    The axial cutting forces are perceived by the Support part 1 through an annular projection b, and the necessary stability in the radial direction is ensured by the sufficient rigidity of the disk 2. The central protrusion 7 serves as a support and centering element in the reference hour τι .
    类似技术:
    公开号 | 公开日 | 专利标题
    Cohen et al.1983|Structure and reactivity of bis | titanium |, a simple olefin adduct of titanium
    CA2072752C|2000-02-08|Supported ionic metallocene catalysts for olefin polymerization
    Bordner et al.1986|Crystal structure of 2, 2, 4, 4-tetrahydro-2, 2, 2, 4, 4, 4-hexaphenyl-1, 3, 2, 4-dioxadistibetane | and related compounds
    CA2084017C|2006-11-21|Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts
    IE40215B1|1979-04-11|Olefine polymer, olefine polymerisation process and catalyst
    US4926002A|1990-05-15|Catalyst for olefin polymerization
    Natta et al.1962|Di‐isotactic polymers of cis‐and trans‐β‐chloro‐vinyl ethers and factors determining their steric configurations
    GB1337764A|1973-11-21|Process for the preparation of a ziegler-natta type catalystcomponent
    ES428961A1|1976-11-16|Polymerization of ethylene
    SU843709A3|1981-06-30|Method of producing catalyst component for propylene polymerization
    ES397560A1|1974-06-16|Process for the polymerization of alkenes
    Erker1992|Stereoselective synthesis with zirconium complexes
    KR880000479A|1988-03-26|How to Improve Catalyst Productivity in Olefin Polymerization
    US4051313A|1977-09-27|Process for purifying polypropylene
    US5064918A|1991-11-12|Ziegler-Natta polymerization of styrene monomer
    ES476425A1|1979-11-16|Titanium trichloride catalytic component and method for homo-or co-polymerization of alpha -olefin
    Christoffers et al.1995|Stereoselective Synthesis of Chiral Zirconocenes from Doubly Substituted, Donor Functionalized Cyclopentadienes via Helical Chelate Complexes
    US4482638A|1984-11-13|In situ process for producing an alpha olefin polymerization catalyst component
    US4267292A|1981-05-12|Addition of chlorine compound to Ziegler polymerization process
    EP0544006A4|1994-11-17|Component of olefin polymerization catalyst and production of polyolefin
    Erker et al.1994|Synthesis of a Novel Annulated C1‐Bridged ansa‐Metallocene System
    JPS51136625A|1976-11-26|Process for preparation of titanium double compound
    CA1142908A|1983-03-15|Trialkyl aluminum cocatalyst
    ES8204274A1|1982-04-16|Titanium-vanadium catalyst and process for ethylene polymerization.
    JPH06166637A|1994-06-14|Production of olefin oligomer
    同族专利:
    公开号 | 公开日
    DE2635163A1|1977-02-24|
    FR2320308A1|1977-03-04|
    ZA764722B|1977-07-27|
    FR2320308B1|1979-09-28|
    NL7608629A|1977-02-10|
    AT345549B|1978-09-25|
    IT1040379B|1979-12-20|
    CA1099696A|1981-04-21|
    GB1553232A|1979-09-26|
    DE2635163C2|1984-12-20|
    NO762686L|1977-02-09|
    AU513230B2|1980-11-20|
    JPS5222082A|1977-02-19|
    ES450554A1|1978-01-01|
    ATA582276A|1978-01-15|
    AU1669576A|1978-02-16|
    SE7608697L|1977-02-09|
    BE844951A|1977-02-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NL227164A|1957-04-27|
    CH543546A|1971-03-23|1973-10-31|Solvay|Alpha-olefin polymerization catalytic system|
    GB1408620A|1972-12-04|1975-10-01|Shell Int Research|Isoprene polymerization and catalyst therefor|
    JPS5074594A|1973-11-02|1975-06-19|
    ES435000A1|1974-03-20|1977-03-01|Hoechst Ag|Process for the manufacture of a catalyst for the polymerization of alpha-olefins|
    US3984350A|1974-05-09|1976-10-05|Standard Oil Company |Catalyst component comprising brown titanium trichloride|
    DK81375A|1975-01-30|1976-07-31|Hoechst Ag|PROCEDURE FOR MAKING A CATALYST|
    JPS5427871B2|1975-04-23|1979-09-12|JPS5049606A|1973-09-04|1975-05-02|
    DE2861357D1|1977-08-31|1982-01-28|Ici Plc|Titanium trichloride compositions, preparation thereof, catalyst system containing them and polymerisation of olefins using this system|
    EP0000998B1|1977-08-31|1982-03-24|Imperial Chemical Industries Plc|Titanium trichloride compositions, preparation thereof, catalyst system containing them and polymerisation of olefins using this system|
    DE2860737D1|1977-08-31|1981-09-03|Ici Plc|Titanium trichloride compositions, preparation thereof, catalyst system containing them, and polymerisation of olefins using this system|
    US4295991A|1978-09-26|1981-10-20|Exxon Research & Engineering Co.|Titanium trichloride catalyst component and the process for the production thereof|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT26231/75A|IT1040379B|1975-08-08|1975-08-08|CATALYTIC COMPONENTS AND CATALYSTS FOR THE POLYMERIZATION OF OLEFINS|
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