Lead-free and cadmium-free glass frit compositions for glazing,

Details Lead-free and cadmium-free glass frit compositions for glazing, Lead-free and cadmium-free glass frit compositions for glazing,

1982-06-28

1984-05-01

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

106312, 501 15, 501 17, 501 21, 501 25, 501 64, 501 77, 501 78, C03C 100

Patent

active

044462417

ABSTRACT:
Glass frits for use in glazes or enamels have fiber softening point about 535.degree.-609.degree. C. are free of lead, cadmium and zinc and consist essentially of Li.sub.2 O-B.sub.2 O.sub.3 -SiO.sub.3 plus 2-23% SnO.sub.2 +CaO and 2-23% ZrO.sub.2 +La.sub.2 O.sub.3 ; also, Al.sub.2 O.sub.3, SrO, BaO, Na.sub.2 O, F.
Low expansion filler, e.g., B-eucryptite, may be used at 4 to 15% by weight of glass frit.

REFERENCES:
patent: 3561984 (1971-02-01), Eppler
patent: 3811901 (1974-05-01), Bacon
patent: 4002799 (1977-01-01), Dumesnil et al.
patent: 4172733 (1979-10-01), Moritsu et al.
patent: 4316963 (1982-02-01), Hommel et al.
patent: 4352889 (1982-10-01), Takami et al.

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