Solvent-free wire enamel composition
AssigneeElantas GmbH
InventorsRonnie Halfar, Sascha Toedter-Koenig, Klaus-W. Lienert, Simon Rost, Stefan Hartkopp, Hans-Ulrich Moritz
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Abstract
The present invention relates to a solvent-free wire enamel composition containing extrudable, polyesterimide-containing binders, prepared from polyols, polycarboxylic acids, imide-forming components, and structural elements which are crosslinkable after extrusion.
Claims20
A method of applying an enamel composition to a wire, wherein the method comprises melting the enamel composition in an extruder, applying the melted composition to the wire and subjecting the applied composition to post-crosslinking, the enamel composition being a solvent-free wire enamel composition comprising an extrudable, polyesterimide-containing binder prepared from (i) polyols, (ii) polycarboxylic acids, (iii) imide-forming components, and (iv) structural elements which are crosslinkable after extrusion, and wherein components (iii) are catenary imide-forming components and structural elements (iv) are unsaturated carboxylic acids and the composition comprises 30-60 wt % of catenary imide-forming components and 2-20 wt % of unsaturated carboxylic acids.
A method of producing a coated wire, wherein the method comprises melting a wire enamel composition in an extruder, applying the melted composition to the wire and subjecting the applied composition to post-crosslinking, the enamel composition being a solvent-free wire enamel composition comprising an extrudable, polyesterimide-containing binder prepared from (i) polyols, (ii) polycarboxylic acids, (iii) imide-forming components, and (iv) structural elements which are crosslinkable after extrusion, and wherein components (iii) are catenary imide-forming components and structural elements (iv) are unsaturated carboxylic acids and the composition comprises 30-60 wt % of catenary imide-forming components and 2-20 wt % of unsaturated carboxylic acids.
Dependencies are inferred from the claim text.