27.
    发明专利
    未知

    公开(公告)号:DE59806830D1

    公开(公告)日:2003-02-06

    申请号:DE59806830

    申请日:1998-09-05

    Applicant: BASF AG

    Abstract: A process is described for copolymerizing ethylene with vinyl esters and, if desired, with further vinylic comonomers in a tube reactor at pressures of from 500 to 4000 bar and at not more than 220° C., which comprises initiating the free-radical polymerization at at least two locations of the tube reactor by adding a catalyst/initiator and adjusting the temperature profile within the reactor such that the temperature maxima downstream of the initiation locations are from 150 to 220° C. and differ by less than ±10° C. from one another.

    28.
    发明专利
    未知

    公开(公告)号:AT230420T

    公开(公告)日:2003-01-15

    申请号:AT98954254

    申请日:1998-09-05

    Applicant: BASF AG

    Abstract: A process is described for copolymerizing ethylene with vinyl esters and, if desired, with further vinylic comonomers in a tube reactor at pressures of from 500 to 4000 bar and at not more than 220° C., which comprises initiating the free-radical polymerization at at least two locations of the tube reactor by adding a catalyst/initiator and adjusting the temperature profile within the reactor such that the temperature maxima downstream of the initiation locations are from 150 to 220° C. and differ by less than ±10° C. from one another.

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