Agy Holding Corporation

Brian Gene Ruppel

Anthony V Longobardo

Robert Lurie Hausrath

Anthony Vincent Longobardo

Glass compositions and glass fibers having low dielectric constants and low dissipation factors that may be suitable for use in electronic applications and articles are disclosed. The glass fibers and compositions of the present invention may include between 45.0 to 58.0 weight percent SiO; greater than 18.0 weight percent BOand no more than 26.0 weight percent BO; greater than 16.0 weight percent AlOand no more than 23.0 weight percent AlO; between 0.25 to 12.0 weight percent PO; greater than 0.25 weight percent CaO and less than 5.00 weight percent CaO; less than 4.50 weight percent MgO; greater than 0.25 weight percent CaO+MgO and less than 5.00 weight percent CaO+MgO; less than 0.80 weight percent FeO; and less than 0.50 weight percent TiO. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius.

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Arden, NC, United States of America

Brian Gene Ruppel