LOW-DENSITY FILLED POLYURETHANE FOAM

• Main Authors: PAGRYZINSKI, WILLIAM, V, BUFFY, JARROD, SONG, INHO
• Format: Patent
• Language: English; French
• Published: 03.06.2010
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; CHEMISTRY; COMPOSITIONS BASED THEREON; DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; FIXED CONSTRUCTIONS; FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES,FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS,BLINDS, GATES; GENERAL PROCESSES OF COMPOUNDING; LADDERS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; PERFORMING OPERATIONS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; THEIR PREPARATION OR CHEMICAL WORKING-UP; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL; WORKING-UP

A filled polyurethane foam that includes a closed-cell polyurethane matrix having a mineral filler dispersed therein, wherein the polyurethane foam has a density of from about 1.5 to about 3.0 pounds per cubic foot, is described. The filled polyurethane foam can be prepared by mixing a polyol component that includes a blowing agent and an isocyanate component under reaction conditions, wherein one or both of the polyol component and the isocyanate component include a mineral filler, and allowing the mixed components to expand and cure. The filled polyurethane foam can be used as a door core that includes less polyurethane than polyurethane door cores that lack the mineral filler. L'invention porte sur une mousse de polyuréthane chargée qui comprend une matrice de polyuréthane à cellules fermées ayant une charge minérale dispersée en son sein, la mousse de polyuréthane ayant une masse volumique d'environ 1,5 à environ 3,0 livres par pied cube. La mousse de polyuréthane chargée peut être préparée en mélangeant un composant polyol qui comprend un agent gonflant et un composant isocyanate dans des conditions réactionnelles, où un ou deux du composant polyol et du composant isocyanate comprennent une charge minérale, et en amenant les composants mélangés à se dilater et à durcir. La mousse de polyuréthane chargée peut être utilisée comme âme de porte qui comprend moins de polyuréthane que les âmes de porte en polyuréthane qui n'ont pas de charge minérale.