SILICATE PASTE Russian patent published in 2004 - IPC

FIELD: manufacture of building materials. SUBSTANCE: invention provides silicate paste, which is characterized by at least one amorphous binding matrix containing alkali metal (lithium, sodium, and/or potassium) oxide and silica, wherein silica-to-alkali metal oxide molar ratio is above 25:1 and, when homogenously distributed, 10 to 150 g of bound hydroxy-functionalized alkylpolysiloxane and 400 to 7000 g filler are present per 1000 g of silica. Alkylpolysiloxane is characterized by a high portion of linear siloxanes chains and low to middle degree of branching. Particle size of paste is below 200 mcm. EFFECT: improved weather, acid, and temperature resistance so that paste is appropriate both for molded articles and for coatings. 14 cl, 22 ex