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. 04, 2018
Filed:
Feb. 09, 2016
Ppg Industries Ohio, Inc., Cleveland, OH (US);
Hong Li, Sewickley, PA (US);
Paul A. Westbrook, Shelby, NC (US);
Other;
Abstract
The present invention relates generally to glass compositions incorporating rare earth oxides. In one embodiment, a glass composition suitable for fiber forming comprises 51-65 weight percent SiO, 12.5-19 weight percent AlO, 0-16 weight percent CaO, 0-12 weight percent MgO, 0-2.5 weight percent NaO, 0-1 weight percent KO, 0-2 weight percent LiO, 0-3 weight percent TiO, 0-3 weight percent ZrO, 0-3 weight percent BO, 0-3 weight percent PO, 0-1 weight percent FeO, at least one rare earth oxide in an amount not less than 0.05 weight percent, and 0-11 weight percent total other constituents. In some embodiments, the at least one rare earth oxide comprises at least one of LaO, YO, ScO, and NdO. The at least one rare earth oxide is present in an amount of at least 1 weight percent in some embodiments. The at least one rare earth oxide, in some embodiments, is present in an amount of at least 3 weight percent. 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.