1
Christine A Lazarz, Edward H Cook Jr, Lesleigh V Scripa: Method for forming microporous membrane materials. Hooker Chemicals & Plastics, Peter F Casella, Howard M Ellis, October 9, 1979: US04170540 (36 worldwide citation)

Microporous membrane materials suitable for electrolytic cell utilization are formed from the blend of particulate polytetrafluoroethylene, a dry pore forming particulate material, and an organic lubricant. The materials are milled and formed into a sheet, which is rolled to the desired thickness, s ...


2
Christine A Lazarz, Edward H Cook Jr, Lesleigh V Scripa: Microporous membrane materials. Hooker Chemicals & Plastics, Howard M Ellis, September 15, 1981: US04289600 (27 worldwide citation)

Microporous membrane materials suitable for use in electrolytic cells, such as cells for the electrolysis of brine to produce chlorine, are formed from a mixture of polytetrafluoroethylene, a particulate pore forming material and an organic fluorinated lubricant. Such materials are preferably formed ...


3
Christine A Lazarz, Ursula I Keller, Edward H Cook Jr: Processes of wetting hydrophobic fluoropolymer separators. Hooker Chemicals & Plastics, Peter F Casella, Howard M Ellis, February 24, 1981: US04252878 (18 worldwide citation)

Hydrophobic polymeric separators are made wettable to electrolytic cell fluids by a post-manufacturing process of treating with fluorinated surface-active agents. The application of a hydrophilic film of fluorosurfactant onto separator surfaces followed by drying renders the separator permanently we ...


4
Eng Pi Chang, Christine A Lazarz, Edward H Cook Jr: Process for forming a porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells. Hooker Chemicals & Plastics, Howard M Ellis, August 3, 1982: US04342636 (15 worldwide citation)

A porous polyfluoroalkylene sheet, very preferably of polytetrafluoroethylene, which is suitable for use as a separator in an electrolytic cell, such as one used for the electrolysis of brine, has a porosity in the range of 70 to 90%, a thickness in the range of 0.2 to 3.5 mm. and at least one of (a ...


5
Christine A Lazarz, Edward H Cook Jr, Arthur C Schulz: Polymeric microporous separators for use in electrolytic processes and devices. Hooker Chemicals & Plastics, Peter F Casella, Howard M Ellis, February 10, 1981: US04250002 (10 worldwide citation)

The invention disclosed herein relates to a polymeric microporous electrolytic cell separators for producing alkali metal hydroxide at high current efficiencies, said separator having:


6
Richard D Darling, Christine A Lazarz: Electrolytic cell separator, tubular member component thereof and methods for manufacturing and using such separator and component. Hooker Chemicals & Plastics, Howard M Ellis, August 11, 1981: US04283264 (8 worldwide citation)

A separator for an electrolytic cell or similar cell is made of a porous polymeric material, preferably porous polytetrafluoroethylene, and comprises a plurality of tubular portions of such material with one or two flange(s) at end(s) thereof for sealing to other such flanges and to the cell. The fl ...


7
Christine A Lazarz, Edward H Cook Jr: Method of electrolyzing brine with stable low voltage microporous diaphragm in electrolytic cells. Occidental Chemical Corporation, James F Tao, William G Gosz, February 12, 1985: US04498961 (4 worldwide citation)

A porous polyfluoroalkylene sheet, preferably of polytetrafluoroethylene, which is suitable for use as a stable low voltage separator or diaphragm in an electrolytic cell, such as one employed for the electrolysis of brine, without being subject to an objectionable voltage increase upon use, is of a ...


8
Christine A Lazarz, Edward H Cook Jr: Stable low voltage microporous diaphragm for electrolytic cells. Hooker Chemicals & Plastics, Howard M Ellis, October 27, 1981: US04297196 (3 worldwide citation)

A porous polyfluoroalkylene sheet, preferably of polytetrafluoroethylene, which is suitable for use as a stable low voltage separator or diaphragm in an electrolytic cell, such as one employed for the electrolysis of brine, without being subject to an objectionable voltage increase upon use, is of a ...


9
Eng Pi Chang, Christine A Lazarz, Edward H Cook Jr: Porous polyfluoroalkylene sheet useful for separating anolyte from catholyte in electrolytic cells. Hooker Chemicals & Plastics, Howard M Ellis, September 29, 1981: US04292146 (3 worldwide citation)

A porous polyfluoroalkylene sheet, very preferably of polytetrafluoroethylene, which is suitable for use as a separator in an electrolytic cell, such as one used for the electrolysis of brine, has a porosity in the range of 70 to 90%, a thickness in the range of 0.2 to 3.5 mm. and at least one of (a ...