| 摘要 |
<p>A method of rendering masonry architectural building materials water repellent by incorporating into the masonry architectural building material an additive which is a mixture of (i) a water soluble silane coupling agent and (ii) an emulsion which includes water, at least one surfactant and a siloxane fluid. The siloxane fluid is one of linear methylhydrogen siloxane polymers, linear methylhydrogen-methylalkyl siloxane copolymers, methyl- hydrogen cyclosiloxane polymers or methylhydrogen-methylalkyl cyclogiloxane copolymers. An inorganic porous mineral substrate including the mixture is also disclosed.</p> |
