Back to results
US 2015/0173564 A1Published application
Metal Detectable Liquid Crytalline Polymer Composition
AssigneeTicona LLC
InventorsPaul C. Yung, Oliver Juenger
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTicona LLC
InventorsPaul C. Yung, Oliver Juenger
Estimating the term…
A melt-extrudable polymer composition that contains a thermotropic liquid crystalline polymer, non-metallic filler, and metallic filler is provided. The composition is particularly well suited for forming cooking articles (e.g., cookware, bakeware, etc.). When incorporated into such an article, for instance, the metallic filler in polymer composition can be readily detected (e.g., by a metal detector), which in turn allows any foodstuffs prepared with the article to be tested for possible contamination. In addition, the specific nature of the liquid crystalline polymer and relative concentration of the non-metallic and metallic fillers are also selectively controlled so that the resulting composition can possess a relatively high degree of melt viscosity and/or melt strength, which allows the composition to better maintain its shape during melt extrusion.
A metal detectable, melt-extrudable polymer composition comprising from about 25 wt. % to about 98 wt. % of a thermotropic liquid crystalline polymer, from about 1 wt. % to about 60 wt. % of a non-metallic filler, from about 1 wt % to about 15 wt. % of a metallic filler, wherein the polymer exhibits a melt viscosity of from about 20 to about 250 Pa-s, determined at a shear rate of 1000 s−1 in accordance with ISO Test No. 11443 at 15° C. higher than the melting temperature of the composition.
Dependencies are inferred from the claim text.