1
David B Pall: Process for preparing hydrophilic polyamide membrane filter media and product. Pall Corporation, July 20, 1982: US04340479 (252 worldwide citation)

A process is provided for preparing skinless hydrophilic alcohol-insoluble polyamide membranes by preparing a solution in a polyamide solvent of an alcohol-insoluble polyamide resin having a ratio CH.sub.2 :NHCO of methylene CH.sub.2 to amide NHCO groups within the range from about 5:1 to about 7:1 ...


2
Pall David P: Methode de preparation dune membrane filtrante a base de polyamide hydrophile, et produit ainsi obtenu, Process for preparing hydrophilic polyamide membrane filter media and product. Pall Corporation, GOWLING LAFLEUR HENDERSON, January 10, 1984: CA1160007

ABSTRACT OF THE DISCLOSURE _ A process is provided for preparlng skinless hydrophilicalcohol-insoluble polyamide membranes by preparing a solution ina polyamide solvent of an alcohol-insoluble polyamide resin havinga ratio CH2:NHCO of methylene CH2 to amide NHCO groups withinthe range from about 5:1 ...