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    25.
    发明专利
    未知

    公开(公告)号：AT140932T

    公开(公告)日：1996-08-15

    申请号：AT92116233

    申请日：1992-09-23

    Applicant: BASF AG

    Inventor： FUNK GUIDO DR ,  HEMMERICH RAINER DR ,  GROPPER HANS DR ,  KOLK ERICH DR ,  FOLLMER GODOFREDO DR

    IPC: C08F4/02 ,  C08F4/06 ,  C08F4/22 ,  C08F4/24 ,  C08F4/69 ,  C08F10/00 ,  C08F10/02

    Abstract: In a new process for the preparation of a supported catalyst for the polymerisation of alpha -olefins, first a support gel (1) is prepared by introducing a sodium water glass or potassium water glass solution into a swirling stream of an aqueous mineral acid optionally containing aluminium ions longitudinally and tangentially to the stream, spraying the resultant silicic acid hydrosol in drop form into a gaseous medium, and allowing it to solidify to form a hydrogel, and freeing the resultant hydrogel, without prior ageing, from salts by washing and optionally from some of the water by extraction with alcohols and/or ketones, and then drying the hydrogel. This gives the support gel (1), which is ground and fractionated according to particle size. In a second process step, the support gel (1) is charged with chromium trioxide or with a chromium compound which can be converted into chromium trioxide, after which the resultant chromium-containing support gel (2) is heated at from 400 to 1100 DEG C for from 10 to 1000 minutes in an anhydrous gas stream containing oxygen in a concentration greater than 10% by volume. It is essential for the process according to the invention that the drying of the hydrogel to form the support gel (1) takes place in a high-speed drier within a maximum time of 300 seconds at an inlet temperature of from 200 to 600 DEG C. The supported catalyst prepared in this way gives homopolymers and copolymers of ethylene having excellent low-temperature toughness.

    26.
    发明专利
    未知

    公开(公告)号：DE4325824A1

    公开(公告)日：1995-02-02

    申请号：DE4325824

    申请日：1993-07-31

    Applicant: BASF AG

    Inventor： LUX MARTIN DR ,  FUNK GUIDO DR ,  SAIVE ROLAND DR ,  GOERTZ HANS-HELMUT DR ,  KONRAD RAINER DR

    IPC: C09K3/16 ,  C08F2/34 ,  C08F2/44 ,  C08F10/00 ,  C08F10/02 ,  C08F110/02 ,  C08K5/17 ,  C08K5/20 ,  C08L23/02 ,  C08L23/04

    Abstract: A process for the preparation of homopolymers of ethylene or copolymers of ethylene with secondary amounts of other C3- to C12-alk-1-enes by catalytic polymerisation in a suspension or in the gas phase in the presence of an antistatic at a temperature of from 50 to 120 DEG C and at a pressure of from 5 to 50 bar, characterised in that the antistatic employed is a mixture of the following substances: a) a metal salt of medialanic acid of formula (I) , b) a metal salt of an anthranilic acid of formula (II) , where the organic radical R is either alpha ) -CO-(CH2)x-CH3 (III alpha ) or ss) -CO-(CH2)y-CH=CH-(CH2)z-CH3 (IIIss), where x, y and z are each an integer, and x is in the range from 6 to 18, y is in the range from 1 to 16, z is in the range from 1 to 16 and y + z is in the range from 4 to 17, and c) a polyamine obtainable by reacting epichlorohydrin with an aliphatic primary monoamine or an N-alkylalkylenediamine of the formula (IV> R NH-R -NH2 (IV), where R is a C8-C24-alkyl radical and R is a C2-C6-alkylene radical. d

    27.
    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.

    28.
    发明专利
    未知

    公开(公告)号：DE58906885D1

    公开(公告)日：1994-03-17

    申请号：DE58906885

    申请日：1989-09-30

    Applicant: BASF AG

    Inventor： SAIVE ROLAND DR ,  FUNK GUIDO DR ,  HEMMERICH RAINER DR

    IPC: C08F4/607 ,  C08F4/629 ,  C08F4/642 ,  C08F4/647 ,  C08F4/65 ,  C08F4/685 ,  C08F10/02

    Abstract: The invention relates to the homopolymerisation or copolymerisation of ethene by means of a Ziegler catalyst system comprising (1) a transition-metal catalyst component, (2) an organoaluminium catalyst component and (3) an organohalogen catalyst component, characterised in that (1) is the solid-phase product (VI) obtained by (1.1) first combining (1.1.1) an inorganic oxide (1) as a support with (1.1.2) a solution (II) of (IIa) a certain oxahydrocarbon and (IIb) a mixture of (IIb1) a vanadium trichloride/alcohol complex, (IIb2) a titanium trihalide or titanium trihalide/alcohol complex and (IIC) a silicon or boron compound, to form a suspension (III), evaporating the latter to form a solid-phase intermediate (IV), and (1.2) then (1.2.1) combining the intermediate (IV) obtained from (1.1) with (1.2.2) a dissolved organoaluminium compound (V), to form a suspension, the solid-phase product (VI) resulting therefrom as the suspended material being the transition-metal catalyst component (1).

    29.
    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.

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