Abstract: Multi-layer composites comprising: (a) a first scratch-resistant coating layer comprising a first coating (primer); (b) a thermoplastic layer; and (c) a second scratch-resistant coating layer comprising a second coating (primer); 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 coating and the second coating are not the same; 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; processes for producing the same; and uses therefor.

Abstract: Multi-layer composites comprising: (a) a first scratch-resistant coating layer comprising a first coating (primer); (b) a thermoplastic layer; and (c) a second scratch-resistant coating layer comprising a second coating (primer); 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 coating and the second coating are not the same; 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; processes for producing the same; and uses therefor.

Abstract: A multi-layer product having improved acoustic properties is disclosed. The product contains a multi-wall sheet made of a thermoplastic composition and a first functional layer abutting to said sheet made of a material having shear modulus of 0.5 to 2000 MPa and loss factor tan ? of at least 0.1. An additional embodiment wherein the product further includes a second functional layer containing polymethyl methacrylate or polycarbonate, abutting said first functional layer is also disclosed. The product is especially suitable for making roofing elements.

Abstract: The invention relates to an acoustically uncoupled valve cover for internal combustion engines with a flexible plastic seal as seal material and connecting elements with disc springs which acoustically uncouple the valve cover from the engine housing.

Abstract: A shock absorber, arranged between bumper and body, possesses elastically deformable elements (2) which support themselves against sliding surfaces (8), whose contact pressure is adjustable across additionally arranged elastic bodies (10).