Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1993-01-13
1993-09-14
Group, Karl
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501 21, 501 26, 428426, 428428, C03C 091
Patent
active
052448487
ABSTRACT:
Glaze composition for use on bone china and fine china which is essentially free from lead and cadium comprises, by weight, SiO.sub.2 : 35 to 60%, Bi.sub.2 O.sub.3 : 5 to 45%, Al.sub.2 O.sub.3 :5 to 20%, B.sub.2 O.sub.3 : 1 to 15%, at least one of CaO, MgO, SrO or BaO: 2 to 20%, at least one of Li.sub.2 O, Na.sub.2 O, K.sub.2 O: 1 to 10%, and certain other optional ingredients, with the proviso that BaO is not contained in an amount of more than 2% by weight.
REFERENCES:
patent: 3428466 (1969-02-01), Wolf
patent: 4282035 (1981-08-01), Nigrin
patent: 4554258 (1985-11-01), Francel
patent: 4961999 (1990-10-01), Hormadaly
Clifford John F.
Wozniak Ivan
Cookson Group PLC
Group Karl
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