Transparent polyurethane layer with scratch resistance and to abrasion as well as with energy absorbing properties and dugafvisende, process for their preparation as well as window glass, making use of such a layer

摘要

The invention relates to a layer of polyurethane of high optical quality exhibiting the properties of an energy absorber and of resistance to scratching and abrasion, and it is characterised in that it additionally exhibits improved misting resistance properties, the polyol component employed to form the layer comprising a long polyol containing ethylene oxide blocks. …??The polyurethane layer is employed as an outer layer in safety windows.