Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Patent
1985-09-23
1987-05-19
Anderson, Philip
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
55 16, 55158, 264178R, 2642091, 264216, B01D 1304, B01D 5910, C08J 928
Patent
active
046666443
ABSTRACT:
Asymmetrical layered structures such as asymmetrical films are disclosed. The main body section contains a multitude of pores (voids). A thin surface skin is free of pores. The entire structure is fabricated from a polyalkylene sulfone resin in which the alkylene moiety contains 6 to 18 carbon atoms. Processes for preparing the structures also are disclosed. The structures are semi-permeable to gases and are used as membranes to enrich the oxygen content of oxygen
itrogen mixtures.
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Cabasso, Israel; Elias Klein and James K. Smith "Polysulfone Hollow Fibers. I. Spinning and Properties", in Journal of applied Polymer Science, vol. 20, 2377-2394 (1976).
Anderson Philip
Nelson John R.
Owens--Illinois, Inc.
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