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,

1984-04-27

1985-08-27

McCarthy, Helen M.

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 21, 501 25, 501 30, 501 31, 501 78, C03C 100

Patent

active

045378622

ABSTRACT:
Glass frit compositions are shown that are lead-free, cadmium-free, and zinc-free, the compositions having improved chemical resistance, especially acid resistance (acetic acid) of a loss of generally less than about 1.9% by weight. The compositions contain B.sub.2 O.sub.3, SiO.sub.2, ZrO.sub.2 and rare earth oxides, the weight ratio of ZrO.sub.2 to rare earth oxides being critical and being about 1/1 to 1.4/1.

REFERENCES:
patent: Re29388 (1977-09-01), Atkinson
patent: 4088023 (1978-05-01), Berleue
patent: 4446241 (1984-05-01), Francel et al.

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