Diaphragm for electrolytic cell
First Claim
1. A cathode assembly for an electrolytic cell comprising a foraminous cathode substrate, a deposited liquid-permeable erodible mat comprising synthetic fibers on a surface of said cathode substrate, and a synthetic diaphragm on said synthetic fiber-containing erodible mat.
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Accused Products
Abstract
Describes a cathode assembly for electrolytic cells, e.g., chlor-alkali electrolytic cells, comprising a foraminous cathode substrate, a deposited erodible mat comprising synthetic (man-made) fibers, e.g., polyamide (nylon) fibers, on the foraminous surface of said cathode substrate, and a synthetic diaphragm on said erodible mat. Also described is a method for preparing the cathode assembly that comprises depositing a mat of erodible synthetic fibers on the active surface of the foraminous cathode, e.g., by drawing an aqueous slurry of the erodible synthetic fibers through the foraminous cathode, and subsequently forming, e.g., by vacuum deposition, a synthetic diaphragm on the erodible mat.
37 Citations
24 Claims
- 1. A cathode assembly for an electrolytic cell comprising a foraminous cathode substrate, a deposited liquid-permeable erodible mat comprising synthetic fibers on a surface of said cathode substrate, and a synthetic diaphragm on said synthetic fiber-containing erodible mat.
- 8. A cathode assembly for a chlor-alkali electrolytic cell comprising a foraminous metallic cathode substrate, a vacuum deposited liquid-permeable erodible mat comprising aliphatic polyamide fibers appended to an electrolytically active portion of the foraminous surface of said cathode substrate, and a synthetic non-asbestos-containing diaphragm appended to said mat.
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14. A method of preparing a cathode assembly for use in an electrolytic cell comprising:
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(a) depositing a mat comprising synthetic erodible fibers on the surface of a foraminous cathode, thereby to form a liquid-permeable mat on the foraminous cathode, and (b) forming a synthetic diaphragm on said mat. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method of preparing a cathode assembly for use in a chlor-alkali electrolytic cell comprising:
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(a) depositing a liquid-permeable mat comprising synthetic erodible fibers on an electrolytically active surface of a foraminous metallic cathode, said mat having a thickness of from 0.1 to 3.3 millimeters, and (b) appending a synthetic diaphragm to said erodible mat. - View Dependent Claims (22, 23, 24)
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Specification