Sughrue, Mion, Zinn, Macpeak & Seas
Process for the utilization of plastics
 A process for utilizing compact or porous plastics is described that comprise in part or totally polyurethane plastics, wherein the process is characterized by the fact that the plastics are prepared into a reaction mixture with a low hydroxyl number, which can be further processed in the conventional manner into new final products by swelling the plastics either PA1 a) in suitable swelling agents and reducing in size into a free flowing gel; or PA1 b) dissolving and/or decomposing in suitable hydroxy polyols; and PA1 c) adjusting the hydroxyl number to the desired size; PA1 d) optionally transforming the reaction mixture comprising a), b) and c) into a polyurethane prepolymer, PA1 e) further processing the individual reaction mixtures a) to c) into a polyurethane product or into a plastic with the aid of other suitable hardener systems. 
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C08L C08J C08G C08J C08J C08G Y02W C08G
inventional inventional additional additional inventional additional additional inventional
Wolfgang Michael
Holzapfel Demuth