Compositions: coating or plastic – Coating or plastic compositions – Metal-depositing composition or substrate-sensitizing...
Patent
1975-12-31
1976-07-06
Douglas, Winston A.
Compositions: coating or plastic
Coating or plastic compositions
Metal-depositing composition or substrate-sensitizing...
C04B 3324, C04B 3300
Patent
active
039679713
ABSTRACT:
Disclosed are low-expansion, translucent, semicrystalline, whiteware ceramic bodies containing cordierite as the crystalline phase and advantageously having translucency suitable for use in fine dinnerware applications. The ceramic bodies can be fired in commercial kilns which characteristically require at least a 100.degree.F firing range. The raw materials are specified proportions of talc containing low levels of iron oxide and titania; kaolin clay containing low levels of iron oxide and titania; alumina; and oxide-producing materials of akali or alkaline-earth aluminosilicates and certain oxides proportioned to yield a fired ceramic body composition in the range of 51.5 to 58 parts by weight SiO.sub.2, 28 to 36 parts by weight Al.sub.2 O.sub.3, 10 to 17 parts by weight MgO, and 4 to 10 parts by weight of certain other oxides wherein the parts by weight of SiO.sub.2 + Al.sub.2 O.sub.3 + MgO = 100 weight parts as a basis.
REFERENCES:
patent: 3459567 (1969-08-01), Yamamoto et al.
patent: 3499987 (1970-03-01), Inoue
patent: 3561984 (1971-02-01), Eppler
patent: 3846098 (1974-11-01), Nokashima et al.
Ceramic Industry - Jan. 1967 Handbook of Materials for Ceramic Processing - pp. 82, 83, 85, 101, 103, 104, 146, 149.
Bell Mark
Douglas Winston A.
Schmitz Thomas M.
SCM Corporation
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