The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 24, 2024
Filed:
Jan. 29, 2021
Electric Glass Fiber America, Llc, Shelby, NC (US);
Hong Li, Stanley, NC (US);
Paul A. Westbrook, Shelby, NC (US);
Electric Glass Fiber America, LLC., Shelby, NC (US);
Abstract
The present invention relates generally to glass compositions incorporating rare earth oxides (REO). In one embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO, 12.5-22 wt. % AlO, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % FeO, 0.05 or greater wt. % REO, and greater than 1 wt. % MnO. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO, 12.5-22 wt. % AlO, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % FeO, 0.05 or greater wt. % REO, 0-4 wt. % BaO, 0-4 wt. % SrO, and 0-5.5 wt. % ZnO, wherein the sum of BaO+SrO+ZnO is greater than about 2 wt. %. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO, 12.5-22 wt. % AlO, 0-20 wt. % CaO, 0-11 wt. % MgO, 0.2-1 wt. % FeO, 0.05 or greater wt. % REO, and from greater than 0 to 2.5 wt. % CuO. In another embodiment, a glass composition suitable for fiber forming comprises 51-70 wt. % SiO, 12.5-22 wt. % AlO, 0-20 wt. % CaO, 0-12.5 wt. % MgO, 0.2-1 wt. % FeO, 0.05 or greater wt. % REO, and at least one additional feature selected from the group consisting of: LaOis present in an amount greater than about 2 weight percent, CaO is present in an amount less than about 2 weight percent, a MgO/CaO ratio less than about 1, and a SiO/AlOratio greater than about 4. The glass compositions can be used to form glass fibers which can be incorporated into a variety of other fiber glass products (e.g., strands, rovings, fabrics, etc.) and incorporated into various composites.