Layer or coating and composition for applying said layer or coating. RU patent 2394798.

FIELD: chemistry.

SUBSTANCE: present invention relates to a composition for applying a layer of coating, particularly an anti-adhesion layer for casting moulds which are in contact with molten metals or glass. The composition contains aluminium titanate or silicon nitride with average particle size greater than 500 nm, an oxide inorganic component with average particle size between 100 nm and 10 mcm and a binding agent which contains particles with average size less than 50 nm. When preparing the composition, aluminium titanate or silicon nitride is dispersed in water and the obtained dispersion is mixed with aqueous dispersions of an inorganic oxide component, binding agent and additional components. The oxide component can be aluminium oxide or titanium oxide and the additional components can be boron nitride or graphite. The invention also relates to use of the composition to apply a layer or a coating on fire bricks, graphite or steel articles, to layers or coatings applied from this composition, to articles which are at least coated with the said layer or coating.

EFFECT: increased resistance of the coating to high mechanical stress and to oxidation with low penetration by molten metals.

26 cl, 11 ex

IPC classes for russian patent Layer or coating and composition for applying said layer or coating. RU patent 2394798. (RU 2394798):

C04B41/87 - Ceramics

C04B35/478 -

B82B3 - Manufacture or treatment of nano-structures by manipulation of individual atoms or molecules, or limited collections of atoms or molecules as discrete units

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