Porcelain enamel frit for sheet iron ground coat

Details Porcelain enamel frit for sheet iron ground coat Porcelain enamel frit for sheet iron ground coat

1981-08-05

1982-11-30

Bell, Mark

Compositions: ceramic

Ceramic compositions

Glass compositions, compositions containing glass other than...

501 24, 501 26, 501 63, 501 66, 501 67, 501 77, 501 79, C03C 702, C03C 308

Patent

active

043616542

ABSTRACT:
A porcelain enamel frit for sheet iron ground coat is disclosed, which contains neither fluorine nor fluorine compound, but has excellent firing property, and can be worked into sheet iron enamel having high gloss and adherence and low surface roughness. The frit consists of 100 parts of a main component and 7-42 parts of an auxiliary component, said main component consisting of 30-73 parts of SiO.sub.2 or a mixture of SiO.sub.2 and at least one of TiO.sub.2, ZrO.sub.2 and SnO.sub.2, 8-45 parts of B.sub.2 O.sub.3, and 8-41 parts of Na.sub.2 O or a mixture of Na.sub.2 O and at least one of Li.sub.2 O and K.sub.2 O, and said auxiliary component consisting of not more than 12 parts of Al.sub.2 O.sub.3, 1-22 parts of at least one of CaO, Bao, ZnO, MgO and SrO, from more than 0 part to 7 parts of MoO.sub.3 or a mixture of MoO.sub.3 and at least one of V.sub.2 O.sub.5, P.sub.2 O.sub.5 and Sb.sub.2 O.sub.3, and 0.5-10 parts of at least one of CoO, NiO, CuO, MnO.sub.2 and Fe.sub.2 O.sub.3.

REFERENCES:
patent: 2604410 (1952-07-01), Bryant
patent: 2662020 (1953-12-01), Schofield et al.
patent: 2753271 (1956-07-01), Trepton
patent: 2757105 (1956-07-01), Terry
patent: 3507687 (1970-04-01), Laird
patent: 3556820 (1971-01-01), Ruban et al.
patent: 4250215 (1981-02-01), Mayer

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