Agy Holding Corporation

Robert Lurie Hausrath

Anthony V Longobardo

Brian Gene Ruppel

Sudhendra V Hublikar

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 48.0 to 58.0 weight percent SiO; between 15.0 and 26.0 weight percent BO; between 12.0 and 18.0 weight percent AlO; between greater than 0.25 and 3.0 weight percent PO; between greater than 0.25 and 7.00 weight percent CaO; 5.0 or less weight percent MgO; between greater than 0 and 1.5 weight percent SnO; and 6.0 or less weight percent TiO. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius and a liquidus temperature greater than 1000 degrees Celsius.

Low dielectric glass composition, fibers, and article

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 48.0 to 57.0 weight percent SiO; between 15.0 and 26.0 weight percent BO; between 12.0 and 18.0 weight percent AlO; between 3.0 and 8.0 weight percent PO; between 0.25 and 7.00 weight percent CaO; 5.0 or less weight percent MgO; and 6.0 or less weight percent TiO. Further, the glass composition has a glass viscosity of 1000 poise at a temperature greater than 1350 degrees Celsius and a liquidus temperature greater than 1100 degrees Celsius.

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.

Glass compositions and high-modulus, and high-strength glass fibers made therefrom, being capable of economical, continuous processing and suitable for the production of high-strength and/or high stiffness, low-weight composites, such as windturbine blades, the glass composition comprises the following constituents in the limits defined below, expressed as weight percentages: between about 56 to about 61 weight percent SiO; between about 16 to about 23 weight percent AlO, wherein the weight percent ratio of SiO/AlOis between about 2 to about 4; between about 8 to about 12 weight percent MgO; between about 6 to about 10 weight percent CaO, wherein the weight percent ratio of MgO/CaO is between about 0.7 to about 1.5; between about 0 to about 2 weight percent NaO; less than about 1 weight percent LiO; and total residual transition metal oxides of less than about 2 weight percent.

High strength glass composition and fibers

The present disclosure relates to a glass composition having a low thermal expansion coefficient, specifically, a glass composition comprising about 55 to less than 64 weight percent of silicon oxide, about 15 to about 30 weight percent of aluminum oxide, about 5 to about 15 weight percent of magnesium oxide, about 3 to about 10 weight percent boron oxide, about 0 to about 11 weight percent calcium oxide, and about 0 to about 2 weight percent of alkali oxide, the remainder being trace compounds of less than about 1 weight percent, is provided. Glass fibers and composite articles formed therefrom are also provided.

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Aiken, SC, United States of America

Robert Lurie Hausrath