Polycarbonate with high extensional viscosity
AssigneeBayer Aktiengesellschaft
InventorsKlaus Horn, Ralf Hufen, Markus Krieter, Dirk-Jacques Dijkstra, Jens Hepperle, Helmut Münstedt
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Abstract
A thermoplastic molding composition that contains a polycarbonate resin having specific extensional Theological properties is disclosed. The composition is particularly suitable for preparing containers.
Claims8
A polycarbonate resin characterized in that in the uniaxial elongation test performed at a temperature of 200° C. with rising Hencky strain ε the extensional viscosity ηE rises more sharply than 3η where η is the shear viscosity.
A process of making a container comprising (i) obtaining a thermoplastic molding composition that contains a polycarbonate resin characterized in that in the uniaxial elongation test performed at a temperature of 200° C. with rising Hencky strain ε the extensional viscosity ηE rises more sharply than 3η where η is the shear viscosity, and (ii) forming a container from the composition by extrusion blow molding.
A process of making a container comprising (i) obtaining a thermoplastic molding composition that contains a polycarbonate resin characterized in that in the uniaxial elongation test performed at a temperature of 200° C. with rising Hencky strain ε the extensional viscosity ηE rises more sharply than 3η where η is the shear viscosity, and (ii) forming a container from the composition by injection blow molding.
Dependencies are inferred from the claim text.