Process for isolating polycarbonates from their solutions with tube having cross sectional contrictions
AssigneeBayer Aktiengesellschaft
InventorsDieter Freitag, Claus Wulff, Wolfgang Alewelt, Hermann Kauth
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Abstract
The present invention relates to a process for isolating polycarbonates in which a solution of polycarbonate in an organic solvent is dispersed with steam and which is characterized in that the resulting suspension of polycarbonate particles, condensed water and water/solvent vapor is subsequently dried in a tube with cross-sectional constrictions.
Claims6
A process for isolating aromatic thermoplastic polycarbonates from solutions thereof in organic solvent, comprising dispersing the solution with steam to form a suspension of polycarbonate particles, condensed water and water/solvent vapor, drying the suspension in a tube with cross-sectional constrictions, and isolating the polycarbonate after drying.
Dependencies are inferred from the claim text.