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    2.
    发明专利
    未知

    公开(公告)号：ES2061900T3

    公开(公告)日：1994-12-16

    申请号：ES89121781

    申请日：1989-11-25

    Applicant: BASF AG

    Inventor： WEBER SIEGFRIED DR ,  FUNK GUIDO DR

    IPC: C08F4/02 ,  C08F4/24 ,  C08F4/60 ,  C08F4/603 ,  C08F4/622 ,  C08F4/623 ,  C08F4/629 ,  C08F4/69 ,  C08F10/02

    Abstract: The area is the polymerization of ethylene by Phillips catalysis using (1) a supported catalyst containing chromium, phosphorus and aluminium, and (2) a cocatalyst comprising an alkyllithium, (1) having been obtained by (1.1) preparing a catalyst precursor containing chromium, phosphorus and aluminium from a silicate support, a selected chromium compound, a selected phosphorus compound and a selected aluminium compound, and then (1.2) heating the catalyst precursor in an oxygen-containing gas stream. It is a characteristic of the process that (1) has been obtained by - in each case specifically in the type and manner - first preparing (1.1) by (1.1.1) preparing a suspension first from (1.1.1.1) a finely divided silicate support and (1.1.1.2) an inert organic solvent, (1.1.2) then combining (1.1.2.1) an organochromium compound in an inert organic solvent (1.1.2.2) with (1.1.2.3) a trialkyl aluminium compound (1.1.3) then combining (1.1.3.1) the suspension resulting from (1.1.1) with (1.1.3.2) a phosphoric or phosphorous acid ester and (1.1.3.3) the product obtained from (1.1.2), finally (1.1.4) evaporating the suspension obtained in (1.1.3) to dryness, and then, secondly, (1.2) first (1.2.1) treating the precursor obtained from (1.1) with a stream of nitrogen, then (1.2.2) heating the intermediate obtained from (1.2.1) in an oxygen-containing gas stream, and (1.2.3) treating the intermediate obtained from (1.2.2) with a stream of nitrogen, and finally (1.3) suspending the product obtained from (1.2.3) in (1.3.1) an organic solvent and then (1.3.2) reacting it with an alkylboron compound, and (2) is an alkyllithium compound.

    3.
    发明专利
    未知

    公开(公告)号：DE58906248D1

    公开(公告)日：1994-01-05

    申请号：DE58906248

    申请日：1989-09-21

    Applicant: BASF AG

    Inventor： FUNK GUIDO DR ,  WEBER SIEGFRIED DR ,  HEMMERICH RAINER DR

    IPC: C08F2/34 ,  C08F2/44 ,  C08F4/60 ,  C08F4/64 ,  C08F10/02

    Abstract: The invention relates to a process for the preparation of ultrahigh-molecular-weight ethylene polymers in the gas phase in a fluidised bed of particulate polymer by the continuous introduction of the appropriate monomers into a polymerisation system at from 60 to 120 DEG C and at from 5 to 60 bar in the presence of a reaction product of a titanium-containing catalyst and an antistatic and in the presence of a monohydric or polyhydric alcohol, and to an ultrahigh-molecular- weight ethylene polymer prepared by said process.

    8.
    发明专利
    未知

    公开(公告)号：DE3841436A1

    公开(公告)日：1990-06-13

    申请号：DE3841436

    申请日：1988-12-09

    Applicant: BASF AG

    Inventor： WEBER SIEGFRIED DR ,  FUNK GUIDO DR

    IPC: C08F4/02 ,  C08F4/24 ,  C08F4/60 ,  C08F4/603 ,  C08F4/622 ,  C08F4/623 ,  C08F4/629 ,  C08F4/69 ,  C08F10/02

    Abstract: The area is the polymerization of ethylene by Phillips catalysis using (1) a supported catalyst containing chromium, phosphorus and aluminium, and (2) a cocatalyst comprising an alkyllithium, (1) having been obtained by (1.1) preparing a catalyst precursor containing chromium, phosphorus and aluminium from a silicate support, a selected chromium compound, a selected phosphorus compound and a selected aluminium compound, and then (1.2) heating the catalyst precursor in an oxygen-containing gas stream. It is a characteristic of the process that (1) has been obtained by - in each case specifically in the type and manner - first preparing (1.1) by (1.1.1) preparing a suspension first from (1.1.1.1) a finely divided silicate support and (1.1.1.2) an inert organic solvent, (1.1.2) then combining (1.1.2.1) an organochromium compound in an inert organic solvent (1.1.2.2) with (1.1.2.3) a trialkyl aluminium compound (1.1.3) then combining (1.1.3.1) the suspension resulting from (1.1.1) with (1.1.3.2) a phosphoric or phosphorous acid ester and (1.1.3.3) the product obtained from (1.1.2), finally (1.1.4) evaporating the suspension obtained in (1.1.3) to dryness, and then, secondly, (1.2) first (1.2.1) treating the precursor obtained from (1.1) with a stream of nitrogen, then (1.2.2) heating the intermediate obtained from (1.2.1) in an oxygen-containing gas stream, and (1.2.3) treating the intermediate obtained from (1.2.2) with a stream of nitrogen, and finally (1.3) suspending the product obtained from (1.2.3) in (1.3.1) an organic solvent and then (1.3.2) reacting it with an alkylboron compound, and (2) is an alkyllithium compound.

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