CELLULAR ELASTOMERIC FOAMS AND METHOD OF MANUFACTURE

摘要

The present invention relates to open- and/or closed-cell elastomeric foams and to a method of production thereof. In particular there is provided an open- and/or closed-cell elastomeric foam produced by foaming a polyurethane and/or polyurea-prepolymer capable of being cross-linked with a polyamine chain-lengthening agent in the presence of an expanding agent characterized in that the expanding agent contains at least proportionately, a gas-forming component that is capable of reacting with the polyamine chainlengthening agent or the reaction product of the chain-lengthening agent with polyisocyanates. The foams are useful as resilient elements, sound-proofing etc.