A process for cell opening in polyurethane foams comprising: providing a
base polyol, providing catalysts up to 10 wt% of base polyol, providing surfactants
up to 10 wt% of base polyol, providing cross-linker up to 10 wt% of base
polyol, providing blowing agents up to 10 wt% of base polyol, blending the
aforesaid materials at up to 200ºC, adding polyisocyanate up to 300
percentage weight of the base polyol to the blended mixture and mixing them,
followed by molding and curing of the foam.
Indian patent application no. 1213/MUM/2004 Patent grant no.
Inventors: Harikrishnan G, T Umasankar Patro, and D V Khakhar