Patent ID: 8030364
Filing Date: 2011-10-04
Classification: C08G,C08J,Y02W

Abstract:
1. A method of preparing a polyester-amide polyol by recycling a polymer waste, the method comprising: (a) depolymerizing performed via trans-esterification of a mixed waste of polyethylene terephthalate and polyamide with a polymeric fatty acid mono(polyhydroxyl alcohol)ide composition produced by the reaction of a polymeric fatty acid glyceride ester with a polyhydric alcohol; (b) polycondensing the depolymerized products from step (a) with a polybasic acid and a polyhydric alcohol to obtain a polyester-amide oligomer composition; (c) reacting the oligomer composition from step (b) with an amine to obtain an amine adduct polyol composition having function of surfactant.