DOUBLE-GLASED WINDOW WITH SEALING COMPOSITION, HAVING LOW GAS PERMEABILITY Russian patent published in 2011 - IPC C08L83/04 C09K3/10 E06B3/66 C03C27/10 

FIELD: chemistry.

SUBSTANCE: double-glased window, having at least two glass sheets at a certain distance from each other with an insulating gas or mixture of gases with low thermal conductivity in between, and a gas-impermeable element containing a hardened sealing composition obtained by hardening a curable sealing composition. The curable sealing composition contains a) at least one diorganopolysiloxane, terminated with silane, having general formula: M_aD_bD'_c, where a equals 2, b is equal to or greater than 1, and c equals zero or a positive number; M is (HO)_3-x-yR¹ _XR² _ySiO_1/2, where x equals 0, 1 or 2 and y equals either 0 or 1, with the boundary condition that x+y is less than or equal to 2, R¹ and R² are each independently a monovalent hydrocarbon group with up to 60 carbon atoms; D is R³R⁴SiO_2/2; where R³ and R⁴ are each independently a monovalent hydrocarbon group with up to 60 carbon atoms; and D' is R⁵R⁶SiO_2/2, where R⁵ and R⁶ are each independently a monovalent hydrocarbon group with up to 60 carbon atoms, b) at least one cross-linking agent for diorganopolysiloxane(s) terminated with silane, where the cross-linking agent is an alkylsilicate of general formula: (R¹⁴O)(R¹⁵CO)R¹⁶O)(R¹⁷O)Si, where R¹⁴, R¹⁵, R¹⁶ and R¹⁷ are each independently selected from monovalent hydrocarbon radicals from C₁ to C₆₀; c) at least one catalyst for a cross-linking reaction; d) at least one inorganic-organic nanocomposite in an amount which enhances gas insulation, where the inorganic-organic nanocomposite contains at least one inorganic component which is a layered inorganic nanoparticle and at least one organic component which is a quaternary ammonium organopolysiloxane and, optionally, e) at least one solid polymer having less gas permeability than that of the cross-linked diorganopolysiloxane(s).

EFFECT: more stable heat insulation.

19 cl, 3 tbl