Patent ID: 9109076
Filing Date: 2015-08-18
Classification: C08G,C08K,C08L,C09D

Abstract:
1. A composition comprising nanotitania-polyurethane (nTiO 2 -PU) nanocomposites in which nTiO 2 nanoparticles are coordinated directly to a polyurethane backbone, wherein the composition is self-cleaning, and produced by a method comprising the steps of: a) reacting 4,4-methylene bis(p-phenyl isocyanate) with poly(tetrahydrofuran) to form a prepolymer, polymerizing the prepolymer in the presence of a chain extender 2,2-bis(hydroxymethyl)propionic acid to form polyurethane; and b) reacting the polyurethane with TiO