SILICONE SURFACTANTS FOR USE IN INERT GAS BLOWN POLYURETHANE FOAMS

• Main Authors: LEE F. LAWLER, MARK E. HARAKAL, RICHARD M. GERKIN, GLEN A. MILLER
• Format: Patent
• Language: English
• Published: 30.03.2002
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; GENERAL PROCESSES OF COMPOUNDING; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

IT HAS NOW BEEN FOUND THAT THE USE OF INERT GASES AS AN AUXILIARY BLOWING AGENT IN FLEXIBLE POLYURETHANE FOAMS PLACES UNEXPECTED REQUIREMENTS 011 THE COMPOSITION OF THE SILICONE SURFACTANTS ; USED IN SUCH FOAMS. TYPICAL SILICONE POLYALKYLENE OXIDE POLYETHER COPOLYMER COMB-TYPE SURFACTANTS CONTAINING GREATER THAN ABOUT 37 0.000000E+00THYLENE OXIDE IN THE PENDANT POLYETHER CHAINS CAUSE LARGE CELLS WHEN ADDED INERT GAS IS USED AS THE BLOWING AGENT.