WATER RESISTANT ALUMINUM SILICATE FOR FIREPROOF COATING Russian patent published in 2006 - IPC C01B33/26 C09K21/04 

FIELD: inorganic chemistry, aluminum silicates, composition for fireproofing of building and construction materials.

SUBSTANCE: invention relates to water resistant aluminum silicate with softening temperature more than 900°C for fireproofing of wood, polymer, and other building and construction materials. Water resistant aluminum silicate has general formula of Na₂O*kSiO₂*nAl₂O₃*pP₂O₅*rMA*mH₂O, 1, wherein k = 3.25-11.5; m = 3.5-12; n = 0.052.7; p = 0-0.1; r = 0.3.5; M is K, Ca²⁺, Mg²⁺, Zn²⁺, 1/2Ti⁴⁺; A is Cl^-, O^2-, SO₄ ^2-, CO₃ ^2-. Aluminum silicate represents hardening product of water dispersion containing 1) sodium silicate of general formula Na₂O*xSiO₂*yH₂O, 2, wherein x = 2.9-3.1; y = 17-22; 2) cross-linking agent based on alkali soluble silicium and/or aluminum compound; 3) at least one a) hardening agent (alkali soluble zinc, titanium, magnesium and/or calcium oxide (hydroxide)); b) opener; c) filler (e.g. kaolin, chipped glass fiber, milled sand, etc.); d) modifier in the next component ratio (mass %): sodium silicate 31-83.8, preferably 58-75; alkali soluble silicium compounds 0.05-39.2, preferably 10-15; alkali soluble aluminum compounds 0.4-26, preferably 5-8; hardening agent 0.74-19.9, preferably 3-8; opener 0.013-9.7; filler 1.9-33, preferably 5-15; modifier 0.01-6.3, preferably 0.35-0.75.

EFFECT: composition for production of non-cracked coating with low thermal conductivity and increased fire resistance.

28 cl, 116 ex, 52 tbl