BINDING AGENT Russian patent published in 1998 - IPC

FIELD: building industry. SUBSTANCE: binding agent based on aluminium hydroxide and ortho-phosphoric acid has additionally carbon black. Aluminium hydroxide is a mixture consisting of aluminium hydroxide with residue on sieve N 008 60-61% and finely divided aluminium hydroxide with residue on sieve N 008 5-7% at the following ratio of components, wt.-%: aluminium hydroxide with residue on sieve N 008 60-61% 58-60; finely divided aluminium hydroxide with residue on sieve N 008 5-7% 15-17; carbon black 3.5-5.5, and ortho-phosphoric acid of density ρ= = 1.47-1.49 - the rest. Binding agent is used in finishing works. EFFECT: increased resistance to cracks of binding agent.