METHOD OF PREPARING OF BUILDING SILICATE DYE Russian patent published in 1995 - IPC

FIELD: building industry. SUBSTANCE: water glass is treated preliminary with urea at 60-80 C up to viscosity value 15-30 s, and butadiene-styrene latex is added to the mixture of chalk, talc and pigment at the following ratio of components, wt. -%: water glass 21.4-25.2; chalk 27.0-39.5; talc 7.5-10.0; pigment 0.5-15.0; urea 1.1-3.3; butadiene-styrene latex 12-18, and water - the rest. Bending strength of dye film is 10 mm, water resistance after 24 h - without change, life working of dye is 120 days. EFFECT: enhanced quality of dye, improved method of preparing. 1 tbl