12.
    发明专利
    未知

    公开(公告)号:DE502006003036D1

    公开(公告)日:2009-04-16

    申请号:DE502006003036

    申请日:2006-10-27

    Applicant: BASF SE

    Abstract: A process for producing a polymer powder comprising vinylformamide units by free radical polymerization of an aqueous solution of N-vinylformamide and if appropriate other monomers and drying the polymer which comprises an aqueous monomer solution comprising N-vinylformamide and at least one polymerization initiator being spray dispensed as an aerosol or dropletized at the top of a heatable tower-shaped reactor, then polymerizing the aerosol or droplets in an inert gas atmosphere to form a finely divided solid and discharging the finely divided polymer from the reactor.

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