Abstract: The invention relates to a method for producing a microporous plastic product using a plastic source material, a physical and/or chemical propellant and further using especially exfoliated nanoparticles. The plastic source material is treated with the propellant in a preceding process steps in the presence of nanoparticles, thereby producing microporous foamed molded plastic articles having a large number of pores and an even pore distribution. The inventive plastic molded articles are not subject to shrinkage or warpage and have an optically appealing, smooth surface as well as advantageous shock and sound absorption properties. The invention also relates to plastic source materials that contain nanoparticles and propellants.

Abstract: A process for the disposal of refuse is characterized by combustion of combustible, solid, pasty or liquid waste materials in a combustion plant with a combustion gas containing at least 50% oxygen. Combustible waste materials are burned in the presence of at least one material selected from the group consisting of non-ferrous metals, non-ferrous metal oxides, alkali compounds, and alkaline earth compounds. The aforementioned combustion is accomplished by burning materials which produce at least one material of the aforementioned class of materials together with the waste materials, by introducing at least one of the materials of the class into the combustion plant together with the input of waste materials or into the hot gas stream, or any combination of these which achieves a desired waste composition. The by-products of the process are cleaned flue gas and a slag in which hazardous materials present in the input waste material are mineralized.