Abstract: A curable divinylarene dioxide resin composition having a stoichiometric excess of divinylarene dioxides cured with amines, anhydrides, or polyphenols. The curable divinylarene dioxide resin composition includes (a) a stoichiometric excess of at least one divinylarene dioxide, (b) a co-reactive curing agent, and a catalyst. A process for making the above curable divinylarene dioxide resin composition; and a cured divinylarene dioxide resin composition made therefrom are also disclosed. The curable divinylarene dioxide resin composition has a longer pot life prior to cure and produces a thermoset having a higher heat resistance after cure than analogous prior art compositions made using stoichiometric compositions. The curable compositions of the present invention are advantageously useful as thermoset materials, coatings, composites, and adhesives.

Abstract: In accordance with the present invention an improved secondary battery is disclosed which consists of at least two and preferably three or more cells in series, each intermediate cell containing a pair of shared carbonaceous electrodes, each electrode being a carbonaceous body of a length to be inserted into adjacent cell, forming the positive electrode in one cell and the negative electrode in the adjacent cell. Each terminal cell in said series having a second electrode of a carbonaceous material providing a connection to complete the flow of stored energy out of and charge energy into said cell series. Each cell has a formaninous separator between each pair of electrodes in said cell to maintain its electrodes in spaced apart relationship. Each cell is a container or compartment of a container and the common electrode connects each cell to the adjacent cell. Each cell is provided with an ionizable salt in a non-aqueous fluid.

Abstract: A low resistance electrical connection is disclosed to connect two dissimilar electroconductive materials, one of which is a fiber, bundle of fibers or a film of an electroconductive polymer, carbon or graphite to an electroconductive metal collector. The connection is achieved by electroplating at an initial low current density the edge ends of a fiber or bundle of fibers or the edges of a cloth or film with an electroconductive metal, e.g. copper, silver and the like; thereafter crimping a fine electroconductive wire mesh onto said plated area and then continuing the said plating process until the wire mesh or gauze is substantially encapsulated with said electroplated metal. Alternative, the electroplated fiber ends may be joined by solder, as by dipping the ends or edges into a molten solder bath or laying a bead of solder substantially onto the copper plated edge of the fiber, bundle, cloth or film.