| abstract |
A layered product which comprises a base and, formed thereon, a porous layer consisting mainly of a polymer; a process for producing the layered product; a functional layered product made with the layered product having a porous layer, the functional layered product comprising a light-transmitting base and, formed thereon, a patterned functional material, e.g., a conductive material; and a process for producing the functional layered product. The layered product comprises a base and a porous layer formed on at least one side of the base. The porous layer is constituted of a composition containing a polymer as a main ingredient. The porous layer has micropores having an average pore diameter of 0.01-10 µm and has a porosity of 30-85%. The composition constituting the porous layer has a glass transition temperature of 20°C or higher. The porous layer is a layer which can be converted to a transparent layer by a heat treatment through disappearance of the micropores. A conductor layer pattern is formed on the surface of the porous layer of the layered product, and the resultant structure is subjected to a heat treatment to cause the micropores present in the porous layer to disappear and convert the porous layer into a transparent layer. |