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US 2016/0101607 A1Published application
Elastomer pmma layered composites having improved properties
AssigneesEvonik Roehm GmbH, BASF SE
InventorsWerner HOESS, Arne SCHMIDT, Antonios MANIS
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Abstract
The invention relates to a plastics laminate in particular for vehicle glazing. The composite is composed of at least three layers, where the two exterior layers are composed of a transparent polymethyl (meth)acrylate (PMMA) and the internal layer is composed of a thermoplastic polyurethane (TPU). The plastics laminate passes the ECE R43 falling-ball test and has better acoustic properties than prior-art plastics composites of the same size.
Claims11
A plastic laminate made of comprising:
- at least two poly(meth)acrylate layers (1) and (2), and
- a layer comprising a thermoplastic polyurethane (3) and located between the at least two poly(meth)acrylate layers (1) and (2),
- wherein the thermoplastic polyurethane comprises from 30 to 60% by weight of hard segments and from 40 to 70% by weight of soft segments.
Dependencies are inferred from the claim text.