Insulation paste containing glass
AssigneeMurata Mfg. Co., Ltd.
InventorsHiromichi Kawakami, Hiroji Tani
Life of this patent
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Abstract
Disclosed herein is a glass composition for insulation which comprises SiO.sub.2 and at least one of B.sub.2 O.sub.3 or K.sub.2 O in a ratio falling within the region enclosed by lines passing through point A (65, 35, 0), point B (65, 20, 15), point C (85, 0, 15) and point D (85, 15, 0) on a composition diagram for the ternary system of SiO.sub.2, B.sub.2 O.sub.3 and K.sub.2 O. The glass composition can additionally contain at least one member selected from the group consisting of Al.sub.2 O.sub.3, La.sub.2 O.sub.3, CaO, Ta.sub.2 O.sub.5 and Nd.sub.2 O.sub.3 in an amount less than 25 parts by weight for 100 parts by weight of the major constituents.
Claims20
An insulation paste consisting of:
- a glass consisting of a combination of at most SiO.sub.2, B.sub.2 O.sub.3, K.sub.2 O and refining agent, said glass having the composition ratio denoted as xSiO.sub.2 --yB.sub.2 O.sub.3 --zK.sub.2 O in which x, y and z designate the weight percent of the constituent components and which falls within the area bounded by lines connecting points A (x=65, y=35, z=0), B (x=65, y=20, z=15), C (x=85, y=0, z=15) and D (x=85, y=15, z=0) and containing less than about 100 parts by weight of said xSiO.sub.2 --yB.sub.2 O.sub.3 --zK.sub.2 O of at least one refining agent selected from the group consisting of Al.sub.2 O.sub.3, La.sub.2 O.sub.3, CaO, Ta.sub.2 O.sub.5 and Nb.sub.2 O.sub.3 ;
- Al.sub.2 O.sub.3 filler in an amount of 0 or about 0.5 to 40 weight percent based on the combined weight of the glass and filler;
- and an organic vehicle.
Dependencies are inferred from the claim text.