Process for preparing electrically conductive shaped articles from polybenzimidazoles
AssigneeHoechst Celanese Corporation
InventorsY. M. Faruq Marikar, Michael M. Besso
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Abstract
An electrically conductive shaped article such as a film or fibrous material and a process for preparing the same from a polybenzimidazole shaped article is provided. The polybenzimidazole article is first contacted with cuprous ions to produce a cuprous ion-impregnated material, and subsequently is subjected to a sulfiding agent capable of sulfiding cuprous ions, and preferably washed, to produce a polybenzimidazole shaped article having covellite copper sulfide in association therewith. Also provided are electrically conductive composites and a process for preparing the same by incorporating fibrous material prepared in accordance with the process within a substantially continuous polymeric matrix.
Claims27
An electrically conductive film comprising polybenzimidazole film material in association with approximately 5 to 60 percent by weight of covellite copper sulfide, based upon the total weight of the product.
A monolithic electrically conductive composite article comprising electrically conductive polybenzimidazole fibrous material in association with approximately 5 to 60 percent by weight of covellite copper sulfide based upon the total weight of the conductive fibrous product, incorporated within a substantially continuous polymeric matrix.
A monolithic electrically conductive composite article comprising a fabric, paper, or felt which includes polybenzimidazole fibrous material in association with approximately 5 to 60 weight percent of covellite copper sulfide, said fabric, paper, or felt being incorporated within a solid continuous polymeric matrix.
A monolithic electrically conductive composite article comprising polybenzimidazole fibrous material in association with approximately 35 to 60 percent by weight of covellite copper sulfide incorporated within a solid continuous cured epoxy resin matrix.
A polymer composition suitable for use in electrically conductive end uses comprising electrically conductive polybenzimidazole fibrous material in association with approximately 5 to 60 weight percent of covellite copper sulfide and a polymeric carrier.
A sheetlike article comprising polybenzimidazole fibrous material in association with from about 5 to about 60 percent by weight of electrically conductive covellite copper sulfide, said sulfide being present in at least one layer comprising a multiplicity of said fibers, and having a thickness of approximately 1 mil to 1 inch, said article having a sheet resistivity in one range of from about 1 to about 1000 ohms/sheet.
Dependencies are inferred from the claim text.