Tin borophosphate glass comprising SnO, B2O3, and P2O5 as main components and sealing material using the glass
AssigneeNippon Electric Glass Co., Ltd.
InventorToshio Yamanaka
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Abstract
A tin borophosphate glass for use in sealing materials includes, by mole, 30 to 80% of SnO, 5 to 60% of B2O3, and 5 to 24% of P2O5 as main components. The glass is free of lead but is of equal quality to those of conventional lead-containing sealing glasses. The glass can provide a satisfactory sealing material.
Claims11
A tin borophosphate glass comprising, by mole, 30 to 80% of SnO, 5 to 60% of B2O3, and 5 to 24% P2O5 as main components and 0 to 25% ZnO as a stabilizing component.
A sealing material comprising, by volume, 50 to 100% of a powdered tin borophosphate glass and 0 to 50% of a powdered refractory filler, said powdered tin borophosphate glass comprising, by mole, 30 to 80% of SnO, 5 to 60% B2O3, and 5 to 24% of P2O5, and 0 to 25% ZnO as a stabilizing component.
Dependencies are inferred from the claim text.