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US 9,067,389 B2Granted
Transparent plastic composite
AssigneeEvonik Roehm GmbH
InventorsWerner Hoess, Michael Zietek, Michael Enders, Christian Eberle, Sven Schroebel, Klaus Albrecht, Rudolf Blass, Klaus Schultes, Arne Schmidt
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Abstract
The invention describes a transparent plastics composite composed of PMMA and TPU with excellent mechanical properties.
Claims15
A plastic composite, comprising:
- a first poly(meth)acrylate layer;
- a second poly(meth)acrylate layer;
- and
- a layer comprising a thermoplastic polyurethane provided between the first poly(meth)acrylate layer and the second poly(meth)acrylate layer;
- wherein:
- the first poly(meth)acrylate layer is free of polyurethane elastomers;
- the second poly(meth)acrylate layer is free of polyurethane elastomers;
- a thickness of the first poly(meth)acrylate layer is from 0.5 to 6 mm;
- a thickness of the second poly(meth)acrylate layer is from 0.5 to 6 mm;
- and
- a thickness of the layer comprising the thermoplastic polyurethane is from 0.5 to 5 mm.
8 more elements
Dependencies are inferred from the claim text.