Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1980-05-14
1982-01-12
McCarthy, Helen M.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 22, 501 76, 501153, 501154, C03C 312
Patent
active
043103570
ABSTRACT:
A low temperature sealing glass composition consisting of 60-80% by weight of vitreous solder glass of PbO-B.sub.2 O.sub.3 system having a deformation point of 350.degree. C. or less, and 20-40% by weight of willemite. The vitreous PbO-B.sub.2 O.sub.3 system glass comprises 70-90% by weight of PbO, 10-15% by weight of B.sub.2 O.sub.3, 0.5-5% by weight of SiO.sub.2, 0-5% by weight of Al.sub.2 O.sub.3, 0-5% by weight of ZnO, 0-15% by weight of PbF.sub.2 and 0-5% by weight of Bi.sub.2 O.sub.3.
REFERENCES:
patent: 3455708 (1969-07-01), Earl
patent: 3954486 (1976-05-01), Francel et al.
patent: 3963505 (1976-06-01), Dumesnil et al.
patent: 4139832 (1979-02-01), Yoshino et al.
patent: 4186023 (1980-01-01), Dumesnil et al.
patent: 4256495 (1981-03-01), Kawamura et al.
Matsuura Ichiro
Yamaguchi Fumio
Kelman Kurt
McCarthy Helen M.
Nippon Electric Glass Company, Limited
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