Hughes Aircraft Company

Arthur B Naselow

Abraham L Landis

Carl W Townsend

Andrew Kindler

A membrane-electrode assembly for use in thermoelectrochemical systems. The electrode assembly includes a radiation grafted cation exchange membrane which is plasma etched to provide an etched anode surface and etched cathode surface. A catalytic cathode layer is thermally bonded to the etched cathode surface and a catalytic anode layer is thermally bonded to the etched anode membrane surface. The resulting membrane-electrode assembly is resistant to delamination and provides electrochemical performance which is equal to or better than that obtained with more expensive conventional electrodialysis membranes.

Enhanced membrane-electrode interface

A solar cell having an active surface protected by a free-standing film, said film having the recurring repeating unit: ##STR1## where R is: ##STR2## said film having a molecular weight of at least about 25,000.

Solar cell coated with high molecular weight polyimide

A solvent polycondensation process of preparing polyimides of high molecular weight from dianhydrides and relatively unreactive diamines, where the reaction is carried out in a cresol as a solvent.

Method of preparing high molecular weight polyimide, product and use

A copolymer formed from an isoimide oligomer and another compound, such as an aryl sulfone, each of which has reactive functional terminal groups, such as ethylenic or acetylenic groups. The isoimide oligomer is soluble in the other compound, unreactive with the compound below a certain temperature and forms a liquid blend therewith. Upon heating the liquid blend above that certain temperature, the terminal groups on the isoimide oligomer and the other compound react with each other to form a copolymer. The liquid blends may be used to form encapsulants, coatings, films, and resin matrices for composites to provide resins with excellent high temperature properties.

Growing community of inventors

Marina del Rey, CA, United States of America

Arthur B Naselow