B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 47/64 (2006.01) B29B 15/04 (2006.01) B29C 47/00 (2006.01) C08F 6/22 (2006.01)
Patent
CA 2352860
The invention relates to the essentially salt-free coagulation of plastic or rubber dispersions using shearing forces. A device with at least one shearing element (3) is used to this end. Said device has a stator (7) and a rotor (9) which is arranged inside said stator, the surfaces of the stator and the rotor that point towards each other each being flat. Alternatively, at least the rotor has a structure which is configured on its surface and which points in the direction of the stator from said surface. A gap (11) with a predetermined gap width is configured between the stator and the rotor. The method is carried out in such a way that the dispersion to be coagulated is guided through the gap (11) between the stator (7) and the rotor (9) and precipitated through the rotation of the rotor at a predetermined shear speed and with a predetermined shear deformation.
L'invention concerne la coagulation sensiblement sans sel de dispersions de matière plastique ou de caoutchouc à l'aide de forces de cisaillement. Pour ce faire, on utilise un dispositif doté au moins d'un élément de cisaillement (3) et présentant un stator (7) et un rotor (9) placé dans le stator. Les surfaces du stator et du rotor se faisant face sont respectivement lisses ou au moins le rotor présente sur sa surface une structure formée et qui fait saillie sur la surface en direction du stator. Une fente (11) d'une largeur prédéterminée est formée entre le stator et le rotor. Le procédé est mis en oeuvre de telle façon que la dispersion à coaguler est guidée entre le stator (7) et le rotor (9) par la fente (11) et, par rotation du rotor, est précipitée avec une vitesse de cisaillement et une déformation de cisaillement prédéterminées.
Barghoorn Peter
Czauderna Bernhard
Ehrmann Gerd
Grabowski Sven
Guntherberg Norbert
Basf Aktiengesellschaft
Robic
LandOfFree
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