Diamond Shamrock Corporation

Eltech Systems Corporation

Diamond Shamrock Chemicals Company

Leo L Benezra

Michael J Covitch

Donald L DeRespiris

Elvin M Vauss

Andrew D Babinsky

G Howard McCain

Shan-Pu Tsai

Mark F Smith

Stanley K Baczek

David W Hill

Lewis R Horvat

John P Hazzard

Arnold Riihimaki

Craig E Finch

A solid polymer electrolyte (SPE), solid polymer electrolyte electrode, and method for forming from cationic exchange perfluorocarbon copolymer. Disclosed are solution techniques for forming SPE's and SPE electrodes using fluorocarbon vinyl ether copolymers.

Solid polymer electrolyte membranes carrying gas-release particulates

A method for repairing perfluorocarbon copolymeric cation exchange membranes. A quantity of a perfluorocarbon copolymer having a desired pendant cation exchange functional group is partially solvated in a solvating dispersion media, applied to areas of the membrane to be repaired, and the dispersion media removed.

Cation exchange electrolytic cell membranes and method for making and

A method for forming a hydrophilic coating upon a porous substrate such as a reticulate electrode or a filter from a dispersed, perfluorocarbon copolymer. Perfluorocarbon copolymer is dispersed in a solvating medium, a substantial portion, but not necessarily all of the perfluorocarbon being solvated. The dispersion is applied to the substrate and the dispersion medium is removed.

Coated porous substrate formation by solution coating

Solid polymer electrolytes and electrode bonded with hydrophylic

Diaphragm coated electrodes, processes for producing these diaphragm coated electrodes, and application of the diaphragm coated electrodes in electrolytic cells used in the electrolysis of brine to produce chlorine and caustic are disclosed.

Dimensionally stable asbestos-polytetrafluoroethylene diaphragms for

A solid polymer electrolyte (SPE), solid polymer electrolyte electrode, and method for forming from cationic exchange perfluorocarbon copolymer. Disclosed are solution techniques for forming SPEs and SPE electrodes using fluorocarbon vinyl ether copolymers.

Method of making solid polymer electrolytes and electrode bonded with

Coatings made from soluable cross-linkable elastomers are shown. Particularly, techniques for solution cross-linking perfluorocarbon copolymers to generate resistant coatings for lining and coating applications are disclosed.

Method for making linings and coatings from soluble cross-linkable

A method for forming a membrane upon an electrode from a dispersed, perfluorocarbon copolymer. Perfluorocarbon is dispersed in a solvating medium, a substantial portion, but not necessarily all of the perfluorocarbon being solvated. The dispersion is applied to an electrode and the dispersion medium is removed.

Electrolytic cell membrane/SPE formation by solution coating

Disclosed is a method and apparatus for the concentration and purification of a cell liquor containing sodium or potassium hydroxide wherein the three compartment electrolytic cell has a porous catalytic anode, a porous asbestos diaphragm separating the anode compartment and a central compartment having a stratification network, a cation-exchange membrane separating the central compartment and a cathode compartment having cathode disposed therein such that an electrolyzing current may be passed between the anode and cathode. Hydrogen gas emanating from the cathode and anode compartments is fed into the porous catalytic anode to decrease the potential across the cell below the evolution potential for chlorine and coincidently reduce the power requirements of the cell, which is operated at elevated temperatures.

Apparatus for concentration and purification of a cell liquor in an

A method of minimizing chlorate formation when brines are decomposed in diaphragm type electrolytic cells which comprises adding brine containing dissolved nickel values periodically to said cell while continuing operation of the cell. The nickel values can be added whenever the chlorate content of the alkali metal hydroxide increases to again minimize chlorate formation.

Method for lowering chlorate content of alkali metal hydroxides

Disclosed is a method and apparatus for the concentration and purification of a cell liquor containing sodium or potassium hydroxide wherein the three compartment electrolytic cell has a porous catalytic anode, a porous asbestos diaphragm separating the anode compartment and a central compartment having a stratification network, a cation-exchange membrane separating the central compartment and a cathode compartment having cathode disposed therein such that an electrolyzing current may be passed between the anode and cathode. Hydrogen gas emanating from the cathode and anode compartments is fed into the porous catalytic anode to decrease the potential across the cell below the evolution potential for chlorine and coincidentally reduce the power requirements of the cell, which is operated at elevated temperatures.

Growing community of inventors

Mentor, OH, United States of America

Leo L Benezra