Sealing composition
AssigneeAsahi Glass Company, Limited
InventorsRyuichi Tanabe, Hiroshi Usui, Yutaka Segawa, Yuichi Kuroki, Eiji Ichikura
Life of this patent
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Abstract
A sealing composition having at least one member from α-4PbO.B2O3 crystal powder and Pb3O4 powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO—ZnO—B2O3—SiO2 type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an α-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.
Claims11
A sealing composition having at least one member from α-4PbO.B2O3 crystal powder and Pb3O4 powder incorporated in a total amount of from 0.0001 to 3 parts by weight to 100 parts by weight of a composition comprising at least 80 wt % and less than 98.99 wt % of a powder of PbO—ZnO—B2O3—SiO2 type crystalline low melting point glass, from 0.01 to 5 wt % of a zircon powder, more than 1 wt % and not more than 19.99 wt % of an α-alumina powder and from 0 to 10 wt % of a low expansion ceramic filler.
Dependencies are inferred from the claim text.