Patent ID: 6034148
Filing Date: 2000-03-07
Classification: A61K,B29C,B29K,C08G

Abstract:
A method for producing an energy-absorbing polyurethane foam, comprising the steps of:(1) preparing a foam-forming composition from (a) a graft polyol having a functionality of between about 2.0 and 2.5, a hydroxyl number in the range of about 50 to 90, and a solids content at least 35% by weight, and (b) from about 20 to 90 parts by weight, based upon 100 parts by weight polyol, of a polyisocyanate, (c) water as a blowing agent, (d) a surfactant; and (e) a catalyst; and(2) forming the polyurethane foam from the foam-forming composition under controlled pressure conditions from about 1.2 to about 1.5 bar (absolute).