The present invention relates to a granular thermal insulation material comprising hydrophobized silicon dioxide and at least one IR opacifier, having a tamped density of up to 250 g/l and a compressive strength according to DIN EN 826:2013 at 50% compression of 150 to 300 kPa or greater than 300 kPa, to processes for production thereof and to the use thereof for thermal insulation.

Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m.sup.3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.

Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m.sup.3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.

A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

The full text of the replacement paragraph without any underlining or strikethrough is provided below:

A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

The full text of the replacement paragraph without any underlining or strikethrough is provided below:

A compound for reinforcing surface treatment, in particular a compound for waterproof reinforcing surface treatment of concrete containing water glass, which contains 1 to 10 wt % of bis (γ-triethoxysilylpropyl) tetrasulphide, 89.9 to 98 wt % of an aqueous solution of lithium silicate, and 0.1 to 1 wt % water glass stabiliser.

The present invention relates to a building waterproofing kit-of-parts comprising A) an aqueous first composition, containing ao) water, a1) a ketone solvent and a2) a carboxylic acid and a3) an alkylalkoxysilane and/or a4) an aminoalkylalkoxysilane, and B) a second composition, containing b1) an alkylalkoxysilane and b2) a hydrocarbon solvent as well as b3) an alcohol solvent and/or b4) an ester solvent and/or b5) a ketone solvent. The invention further relates to the use of the kit-of-parts for the waterproofing of buildings and the elimination of moisture damage in buildings. The invention also relates to a liquid building waterproofing agent, obtained by blending the aforementioned compositions A) and B). Furthermore, the invention relates to an aqueous composition, containing 3.0 to 8.0% by weight of the ketone solvent a1), 0.1 to 1.2% by weight of the aminoalkylalkoxysilane a4), 0.1 to 1.2% by weight of the alkylalkoxysilane a3). 0.01 to 0.75% by weight of the carboxylic acid a2) and/or 88.85 to 96.79% by weight of water, and to the use thereof as a concentrate for the production of the composition A).

The present invention relates to a building waterproofing kit-of-parts comprising A) an aqueous first composition, containing ao) water, a1) a ketone solvent and a2) a carboxylic acid and a3) an alkylalkoxysilane and/or a4) an aminoalkylalkoxysilane, and B) a second composition, containing b1) an alkylalkoxysilane and b2) a hydrocarbon solvent as well as b3) an alcohol solvent and/or b4) an ester solvent and/or b5) a ketone solvent. The invention further relates to the use of the kit-of-parts for the waterproofing of buildings and the elimination of moisture damage in buildings. The invention also relates to a liquid building waterproofing agent, obtained by blending the aforementioned compositions A) and B). Furthermore, the invention relates to an aqueous composition, containing 3.0 to 8.0% by weight of the ketone solvent a1), 0.1 to 1.2% by weight of the aminoalkylalkoxysilane a4), 0.1 to 1.2% by weight of the alkylalkoxysilane a3). 0.01 to 0.75% by weight of the carboxylic acid a2) and/or 88.85 to 96.79% by weight of water, and to the use thereof as a concentrate for the production of the composition A).

A process for treating a substrate made of stone material, preferably in the form of slabs, is provided which process improves the mechanical, thermal and catalytic properties of the substrate. The process includes applying a protective coating to the outer surface of the substrate made of stone material and, to improve adhesion of the protective coating to the outer surface of the substrate, preliminarily subjecting the substrate to one or more pre-treatment steps that eliminate or reduce the presence of pollutants and porosity on the surface of the substrate. The pre-treatment of the substrate made of stone material comprises at least one step of treatment under vacuum conditions inside an autoclave, preferably under pressure conditions lower than 10.sup.2 mbar. Then, after having brought the substrate back to ambient pressure, it is possible to apply and effectively adhere the protective coating to the surface of the stone material.

Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m.sup.3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.

Process for the production of a hydrophobic thermal-insulation moulding, where a hydrophilic thermal-insulation moulding is brought into contact with a hydrophobizing agent in vapour form with formation of a thermal-insulation moulding coated with hydrophobizing agent, and this is then subjected to a press process and during the press process and/or after the press process is reacted with the hydrophobizing agent with formation of the hydrophobic thermal-insulation moulding, where a) the density of the hydrophobic thermal-insulation moulding after the press process and after the reaction with the hydrophobizing agent is from 100 to 250 kg/m.sup.3, and b) the density of the hydrophilic thermal-insulation moulding on contact with the hydrophobizing agent is from 50% to less than 100% of the density of the hydrophobic thermal-insulation moulding.