NOVEL RECYCLABLE BLACK EMAIL COMPOSITION COMPRISING ZINC, MANUFACTURING METHOD, AND ENAMEL PRODUCTS OBTAINED

摘要

The present invention relates to a process for the manufacture of a recyclable black enamel, comprising at least zinc, according to which the melting, at temperatures greater than 900.degree. C., of vitrifiable raw materials comprising at least bismuth, silicon , boron and manganese, then a glass frit comprising at least zinc is added to the mixture obtained after this direct melting. The invention also relates to the composition of black enamel recyclable with zinc. / P