Process for producing mouldable polymer blends
AssigneeZipperling Kessler & Co. (GmbH & Co.)
InventorsBernhard M. Wessling, Harald K. Volk
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Abstract
Substantially monomer-free, electrically conductive organic polymers and/or organic conductors are dissolved or dispersed in a melt or solution of a thermoplastic matrix polymer or polymer mixture partially compatible therewith and having a solubility parameter >8.6 (cal/cm.sup.3).sup.1/2, in order to obtain mouldable polymer blends. The latter are suitable for producing moulded articles, particularly for electrical conductors, semiconductors or photoconductors. A suitable apparatus for producing the polymer blends comprises an extruder or kneader, through whose barrel one or more sonotrodes project into the transformation zone.
Claims20
Method for preparing a moldable polymer blend comprising the steps of
- liquifying a thermoplastic matrix component selected from the group consisting of polymers and polymer mixtures, which component has a solubility parameter of greater than 8.6 (cal/cm.sup.3).sup.1/2 and a surface tension of 35 dyn/cm or more;
- and
- dispersing a conductive component in said liquified thermoplastic matrix component, said conductive component being selected from the group consisting of conductive polymers and organic conductors, so as to form a homogeneous blend.
Method for preparing a moldable polymer blend comprising the steps of:
- (a) dispersing a conductive component in a solvent under ultrasonic action, said conductive component comprising a conductive polymer or an organic conductor;
- and
- (b) mixing a thermoplastic matrix component with said dispersed conductive component, said thermoplastic matrix component being selected from the group consisting of polymers and polymer mixtures, which matrix component has a solubility parameter of greater than 8.6 (cal/cm.sup.3).sup.1/2 and a surface tension of 35 dyn/cm or more.
Dependencies are inferred from the claim text.