IMPACT RESISTANT POLYUREAURETHANE AND METHOD OF PREPARATION

摘要

The present invention relates to a polyether-containing polyureaurethane. The polyureaurethane can include a prepolymer comprising a polyisocyanate and a polyether-containing polyol material. The prepolymer can be reacted with an amine-containing curing agent to produce the polyureaurethane of the present invention. In an embodiment, the polyether-containing polyureaurethane when at least partially cured and when tested as a lens with a hard coating on both surfaces having a maximum center thickness of 2.2 mm in a plano configuration, can have an impact resistance of at least 148 feet per second as defined by The High Impact Test.