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    92.
    发明专利
    未知

    公开(公告)号：DE4130429A1

    公开(公告)日：1993-03-18

    申请号：DE4130429

    申请日：1991-09-13

    Applicant: BASF AG

    Inventor： SCHLUND RUEGER DR ,  MUELLER PATRIK DR ,  KERTH JUERGEN DR ,  HUNGENBERG KLAUS-DIETER DR

    IPC: C08F4/642 ,  C08F4/646 ,  C08F4/68 ,  C08F297/08

    Abstract: The invention concerns a method of producing multi-phase block copolymers, the method being characterized in that, in the gas phase, in the presence of a metalocene catalyst system at temperatures of -50 to +300 DEG C and pressures of 1 to 1000 bar: a) as a first step, 45 to 95 % by wt. of a polymer matrix (A) comprising an alk-1-ene homopolymer or copolymer with a comonomer content of up to 10 % by wt. relative to the matrix (A) is produced and b) as a second step, in the presence of the matrix (A) obtained in step (a), b1) o.5 to 97 % by wt. of at least one alk-1-ene having at least 3 C-atoms and b2) 3 to 99.5 % by wt. of ethylene is reacted to give 5 to 55 % by wt. of a copolymer phase (B).

    Propylene ethylene copolymer and prodn. by 2 stage polymerisation
    96.
    发明专利
    Propylene ethylene copolymer and prodn. by 2 stage polymerisation 未知

    公开(公告)号：DE4019453A1

    公开(公告)日：1992-01-02

    申请号：DE4019453

    申请日：1990-06-19

    Applicant: BASF AG

    Inventor： SCHWAGER HARALD DR ,  KERTH JUERGEN DR

    IPC: C08F2/34 ,  C08F297/08

    Abstract: Propylene-ethylene copolymers (I) are produced by 2-stage polymerisation from the gas phase on a moving bed using a Ziegler-Natta catalyst system with a solid component contg. Ti and an Al cpd. as cocatalyst. Stage 1 involves polymerising propylene (II) at 20-40 bar and 60-90 deg.C with an average dwell of 1-5 h to produce 0.5-2 kg polypropylene (PP)/mmole Al cpd. Stage 2 involves polymerising a mixt. of (II) and ethylene (III), with a partial pressure ratio of 0.5-5:1, at 5-30 barr but at least 7 bar below the pressure in stage 1 and 30-100 deg.C with an average dwell of 1-5 h. Either (a) the wt. ratio of monomers in stages 1 and 2 is 2.5-20:1; or (b) polymerisation in stage 2 is carried out in the presence of 1-8C alkanol (IV) and the wt ratio of monomers in stages 1 and 2 is 1-20:1. Stage 2 is carried out in the presence of (IV). The polymerisation temp. in stage 2 is 70-100 deg.C.

    98.
    发明专利
    未知

    公开(公告)号：DE3829519A1

    公开(公告)日：1990-03-01

    申请号：DE3829519

    申请日：1988-08-31

    Applicant: BASF AG

    Inventor： ZOLK RALF DR ,  KERTH JUERGEN DR ,  HEMMERICH RAINER DR

    IPC: C08F4/658 ,  C08F4/02 ,  C08F4/58 ,  C08F4/60 ,  C08F4/64 ,  C08F4/646 ,  C08F10/00 ,  C08F10/06

    Abstract: The invention relates to the preparation of polymers of propene by means of a Ziegler-Natta catalyst system comprising (1) a titanium component which is based on a finely divided, shaping silica gel and contains titanium, magnesium, chlorine and a benzenecarboxylic acid derivative, (2) an aluminium component and (3) a silane component, characterised in that the titanium component (1) used is obtained by (1.1) first (I) preparing a carrier from (Ia) a silica gel, (Ib) an organomagnesium compound, (Ic) a gaseous chlorinating agent and (Id) a certain phthalic acid derivative, by (1.1.1) first reacting (Ia) with (Ib), (1.1.2) then passing (Ic) into the product from (1.1.1) and introducing the phthalic acid derivative (Id) and isolating (I), (1.2) then preparing a solid-phase intermediate from (I), (II) an alkanol, and (III) titanium tetrachloride by (1.2.1) first reacting (I) with (II), (1.2.2) subsequently introducing (III) into the product from (1.2.1), (1.3) then extracting the solid-phase product from (1.2) with titanium tetrachloride or a mixture of titanium tetrachloride and ethylbenzene, and (1.4) finally washing the solid-phase product from (1.3) with a liquid hydrocarbon.

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