TITLE Benign Process for Creating Micro-Porous Polymer PRIMARY INVENTORS H. Henning Winter and Griffin Gappert DESCRIPTION A novel and environmentally benign process for creating open-pore structures in a variety of polymers. The zero-emission process is applied to create tailored pore size distributions during or after processing (extrusion, injection molding, blow molding) for a wide variety of geometries (film, fibers, molded parts) while preserving the overall shape of the polymer. The process is easily scaled-up. APPLICATIONS Textile applications for "breathable" laminates of fibers Bio-tech/Medical use of ultra-clean porous materials Filter applications for purification of liquids Membrane separations involving separation of gasses and liquids Battery separators Super absorbency fibers and membranes ADVANTAGES Works with a variety of polymers including polyethylene and polypropylene Processing allows control of pore size and distribution Employs conventional equipment and techniques which are easily scaled-up Sample geometry controlled by conventional shaping methods (extrusion, injection molding, blow molding, etc.) Microporosity induced either during or after shaping and composite fabrication Environmental benefits - processing fluids are benign, recoverable, and reusable Resultant porous polymers are exceptionally clean, and retain shape and structural integrity. PATENT STATUS U.S. Patent 6,558,607 LICENSING STATUS Available for Licensing and research collaboration DOCKET UMA 99-36 NOTES FOR MORE INFORMATION Office of Commercial Ventures and Intellectual Property Phone: 413-545-3606 Fax: 413-545-3632 e-mail: cvip@research.umass.edu