Abstract: A multi-layered patch including a backing layer, an outer layer, polymer adhesive layers that include a polymer foam and a solvent, and a heating layer that includes a polymer substrate, a heating element and a sensor, and methods of making and using the multi-layered patch.

Abstract: A multi-layered composite includes a polymer adhesive layer and a polymer support film layer that becomes intimately incorporated with the polymer adhesive layer upon application of heat.

Abstract: A catalyst is provided, where the catalyst has an active surface that includes at least one nodular-structured (particulate) catalyst layer disposed on a support substrate, where the nodular-structured catalyst layer partially coats a surface of the support substrate. The invention further includes a fabrication method of the catalyst. The method includes depositing a catalyst precursor coating on a support substrate by heating a catalyst precursor solution on the support substrate, and further heating the catalyst precursor-coated substrate until a nodular-structured (particulate) catalyst is formed, where the nodular-structured catalyst layer partially coats a surface of the support substrate.

Abstract: Molten metal or molten metal alloy catalysts for transesterification reactions are provided. In particular, readily available molten tin is used as a catalyst for biodiesel production. Catalysts comprising tin alloys with low melting point temperatures to allow for low operation temperatures are also provided. The molten catalysts remain in the reaction zone and do not contaminate the product stream, thereby product separation and recovery are manageable. By using molten tin catalysts, it is possible to produce a high quality glycerol as a second valuable product. Furthermore, wide quality ranges of reactants (alcohol and oil) are available for biodiesel production with molten tin catalysts.