CERAMIC MASS Russian patent published in 2010 - IPC C04B33/13 

FIELD: construction.

SUBSTANCE: ceramic mass contains wollastonite, feldspar, nepheline-syenite, frit, zinc oxide, kaolin, zircon and calcium borate, at the following ratio of components, wt %: wollastonite - 20.0-25.0; feldspar - 4.0-6.0; nepheline-syenite - 2.0-2.6; frit - 20.0-25; zinc oxide - 1.0-1.4; kaolin - 36.0-37.0; zircon - 4.0-6.0; calcium borate - 4.0-6.0. Frit has the following composition, wt %: SiO₂ - 82.0-86.0; Al₂O₃ - 4.0-6.0; CaO - 2.0-3.0; B₂O₃ - 7.0-10.0.

EFFECT: improved heat resistance of products.

1 tbl