GROUND COAT ENAMEL COMPOSITION, GROUND COAT ENAMEL LAYER, PRODUCTS CONTAINING SAME AND METHODS FOR PRODUCING SAME
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United States of America Patent
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Oct 5, 2023
app pub date -
Aug 4, 2021
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Aug 4, 2021
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Abstract
A ground coat enamel composition for production of an adhesion promoter layer between steel and at least one cover coat enamel for production of an enamel-based coating that is highly corrosion-resistant with respect to mechanical, thermal and chemical effects. The ground coat enamel composition includes boron oxide (B2O3) and alkali metal oxide(s), especially Li2O, Na2O and/or K2O, in percentage proportions by weight: a first main constituent, SiO2 from 35-70%, preferably 40-65%, and, as a second main constituent, from Fe2O3 5-28%, preferably in the range from 7-23% and particularly 8%-15% by weight. Also disclosed is a ground coat enamel layer produced from such a ground coat enamel composition. A highly corrosion-resistant article having such a ground coat enamel layer. A method for producing such a ground coat enamel layer and also a method for producing a highly corrosion-resistant article using such a ground coat enamel composition.
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