US Patent 7052805 Polymer electrolyte having acidic, basic and elastomeric subunits
Patent 7052805 was granted and assigned to SRI International on May, 2006 by the United States Patent and Trademark Office.
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The invention includes compositions comprising at least first and second polymers and optionally a third polymer wherein acid subunits, basic subunits and elastomeric subunits are contained in the polymers. In one aspect, the composition comprises a ternary polymer blend comprising an acidic polymer comprising acidic subunits, a basic polymer comprising basic subunits and an elastomeric polymer comprising elastomeric subunits. In an alternate aspect, the composition comprises a binary polymer blend which comprises acidic or basic subunits in one polymer and a copolymer comprising the other of the acidic or basic subunit and an elastomeric subunit. Such polymer compositions may be formed into a membrane having electrochemical properties which permit the use of such a membrane in an electrochemical device.
US Patent 7052805 Polymer electrolyte having acidic, basic and elastomeric subunits
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