Patent ID: 8455105

Claim:
A multi-layer composite comprising: (a) a first scratch-resistant coating layer; (b) a thermoplastic layer; and (c) a second scratch-resistant coating layer; wherein the first scratch-resistant coating layer and the second scratch-resistant coating layer are disposed on opposing sides of the thermoplastic layer; wherein the first scratch-resistant coating and the second scratch-resistant coating each comprise a top coat layer having a thickness, and wherein the first coating and the second coating differ only in the thicknesses of their top coat layers; and wherein the first scratch-resistant coating layer and the second scratch-resistant coating layer are selected such that a multi-layer composite having the first scratch-resistant layer disposed on both sides of the thermoplastic layer has a lower critical impact speed for tough/brittle transition at −30 ° C. according to DIN EN ISO 6603-1 than a multi-layer composite having the second scratch-resistant layer disposed on both sides of the thermoplastic layer.