Patent ID: 6656543
Filing Date: 2003-12-02
Classification: C09B,C09D,C09K,Y10T

Abstract:
A cholesteric layered material having the layer sequence A1/B/A2, where A1 and A2 are identical or different and each comprise at least one aligned cholesteric layer and B is at least one adhesive interlayer separating layers A1 and A2 from one another,wherein the cholesteric layered material is obtained by applying a coating composition to a first support layer to form a supported cholesteric layer A1, applying an adhesive composition to the supported cholesteric layer A1 to form an supported A1/B laminate, applying a coating composition to a second support layer to form a supported cholesteric layer A2, laminating the supported cholesteric layer A2 the supported laminate A1/B by contacting the adhesive layer B with the cholesteric layer A2, and detaching at least one of the support layers, wherein the adhesive force between the adhesive layer B and layers A1 and A2 is at least twice the adhesive force between the cholesteric layers A1 and A2 and any of the support layers.