Polyurethane foam semirigida; process for the formation of polyurethane foam semirigida; and improvement in the process for packaging fragile articles

摘要

A select semi-rigid polyurethane foam composition is described for use in packaging fragile or shock-sensitive objects. The foam composition is prepared from a very select reaction mixture which is characterized by high levels of water and an organic foaming agent, and a relatively low reaction mixture NCO/OH index of from about 30 to about 60.