High adhesion plugging and encapsulating polyurethane prepared from a polyol, a tri or tetra functional aliphatic polyol and a monofunctional aliphatic alcohol

摘要

A polyurethane resin is prepared from an aliphatic or cycloaliphatic isocyanate, a polydiol, a tri or tetra functional aliphatic polyol, and a monofunctional aliphatic alcohol, in the presence of a suitable catalyst. The resin exhibits superior adhesion to greasy wires in communication and electrical cable.