(Alumina electrically conductive) guide article

Stock material or miscellaneous articles – Hollow or container type article – Polymer or resin containing

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252519, 252520, 501127, 501134, 501153, C04B 3510

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047146400

ABSTRACT:
An improved alumina base ceramic guide article is disclosed having sufficient electrical conductivity to remove the static electricity charge from continuously moving textile and synthetic organic polymer filament and tapes when placed in physical contact with said guide article. Specifically said guide article is formed with a sintered polycrystalline alumina ceramic material having a rounded grain size so as not the mechanically abrade the filament or tape members in physical contact therewith and with said ceramic material comprising in approximate weight percent based on the starting batch formulation at least 94% Al.sub.2 O.sub.3, 1-4.5% TiO.sub.2, 0-4% MnO.sub.2, and 0-3% Fe.sub.2 O.sub.3. In the preferred embodiments, the ceramic material contains sufficient TiO.sub.2, Fe.sub.2 O.sub.3, and MnO.sub.2 content to produce a dark uniform color in the final ceramic article.

REFERENCES:
patent: 3776744 (1973-12-01), Clendenen
patent: 3918982 (1975-11-01), Hart et al.
patent: 3937670 (1976-02-01), Semkima et al.
Bhattacharyya et al, "Aluminum Titanate", Glass and Ceramic Research Institute, 32, India, vol. 10, No. 4 (1963).

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