32.
    发明专利
    未知

    公开(公告)号:AT432297T

    公开(公告)日:2009-06-15

    申请号:AT04818384

    申请日:2004-11-05

    Applicant: BASF SE

    Abstract: Process for preparing polymer powder from an aqueous polymer dispersion with water-soluble compounds, the fraction of such compounds being smaller than that of said aqueous polymer dispersion and being based on the polymer present in the form of polymer particles insoluble in water, which comprises subjecting the aqueous polymer dispersion to membrane filtration in a first step of the process and to spray drying in a subsequent second step of the process.

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