ENAMEL Russian patent published in 1994 - IPC

FIELD: manufacture of bodies. SUBSTANCE: the enamel comprises the following components (wt % ): 31-32 silicon oxide; 3.9-4.5 aluminium oxide; 11-12 boron oxide; 17.2-18 sodium oxide; 5.8-6.5 calcium oxide; 1-1.5 chromium oxide; 5.9-6.9 phosphorus oxide; 4.3-5.3 magnesium oxide; 2-2.8 ferric oxide; 6.4-7.1 zinc oxide; and 6.8-8.0 zinc oxide. The enamel characteristics: the firing temperature 750-770 C and the spread- ability 40-43 mm at 760 C. EFFECT: improved properties of the enamel. 1 tbl