PROCESS FOR INCREASING THE HYDROPHOBICITY OF A POROUS PRODUCT

• Main Authors: LECOMTE, JEAN-PAUL, MARTEAUX, LEON, CAMPEOL, FREDERICK, SARRAZIN, MARIE-JOSE, GALEONE, FABRIZIO, ZIMMERMAN, BRETT
• Format: Patent
• Language: English; French; German
• Published: 11.03.2015
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW ORSIMILAR MATERIALS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; METALLURGY; NAILING OR STAPLING MACHINES IN GENERAL; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FORIMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILARMATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITHPERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; REFRACTORIES; SLAG; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE; WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL

A process for increasing the hydrophobicity of a porous product by treating the product, or a composition providing for the product, with a water repellent material, characterized in that the porous product or a composition providing the product, is treated with an aqueous suspension of microcapsules where the microcapsules comprise a water repellent organosilicon core material selected from an organosilane, a partially condensed organosilane and a branched siloxane resin, and a shell of a silicon-based network polymer comprising silica units.