A MIDDLE-PRESSURE POLYMERIZATION PROCESS FOR LIQUID ETHYLENE COPOLYMERS

    公开(公告)号:WO2020200866A1

    公开(公告)日:2020-10-08

    申请号:PCT/EP2020/057931

    申请日:2020-03-23

    Applicant: BASF SE

    Abstract: The present invention relates to a middle-pressure polymerization process for the preparation of a liquid ethylene copolymer which comprises in polymerized form 20 to 60 wt% of ethylene; and at least 20 wt% of an acrylate, which is selected from C 1 -C 22 alkyl (meth)acrylate,where a monomer mix comprising the ethylene and the acrylate is polymerized at a pressure of 50 to 400 bar and in the presence of at least 2 wt% of a chain transfer agent. The invention further relates to a liquid ethylene copolymer obtainable by the polymerization process; and to a lubricant comprising the liquid ethylene copolymer obtainable by the polymerization process; and to a method for reducing friction between moving surfaces comprising the step of contacting the surfaces with the lubricant or with the ethylene copolymer.

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