Open-celled semi-rigid foams with exfoliating graphite
AssigneeDow Global Technologies LLC
InventorsRonald Van Den Bosch, Hans A. G. De Vos
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Abstract
A method for producing an open cell low-density semi-rigid polyurethane foam suitable for general use as a thermal insulating material and/or an acoustical applications is disclosed. The method comprises a method for producing a flame-retardant open-celled semi-rigid polyurethane foam having an overall density of 5 to 30 kg/m2 by reacting (a) a polyisocyanate and (b) a polyol having a molecular weight of 100 to 10,000, in the presence of (c) an effective amount of an exfoliating graphite, (d) blowing agent and (e) optional additional auxiliary substances to produce.
Claims14
A method for producing a flame-retardant open-celled semi-rigid polyurethane foam having an overall density of 10 to 20 kg/m3 by reacting (a) a polyisocyanate and (b) a polyol having an average molecular weight of 100 to 10,000 and an average functionality of 2 to 8, in the presence of (c) an effective amount of an exfoliating graphite, (d) blowing agent and (e) optional additional auxiliary substances.
The method of any of the preceding claims wherein the blowing agent is water.
Dependencies are inferred from the claim text.