Patent ID: 6802997
Filing Date: 2004-10-12
Classification: C08J,Y02W

Abstract:
A refrigerator manufactured by filling rigid polyurethane foam, provided with a label to identify the type of a rigid polyurethane foam material comprising an insulator of rigid polyurethane foam manufactured by forming and curing a polyurethane foam material containing a raw material produced by a method comprising:shredding a scrapped refrigerator comprising rigid polyurethane foam in order to separate a lump of rigid polyurethane foam, grinding the rigid polyurethane foam lump into a rigid polyurethane foam powder, liquefying the rigid polyurethane foam powder by aminolysis reaction or by glycolysis reaction, removing particles of impurities by filtering the liquefied rigid polyurethane foam powder, and reacting the liquefied rigid polyurethane foam powder with either supercritical water or sub-critical water in order to decompose the rigid polyurethane foam powder.