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REDUCED MERCURY CONTAINING ZINC ALKALINE CELLS

  • US 3,847,669 A
  • Filed: 08/03/1973
  • Issued: 11/12/1974
  • Est. Priority Date: 10/01/1971
  • Status: Expired due to Term
First Claim
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1. A GALVANIC CELL HAVING A ZINC ANODE, A MANGANESE DIOXIDE CATHODE AND AN ALKALINE ELECTROLYTE, SAID ZINC ANODE CONTAINING LESS THAN 8 PERCENT MERCURY BASED ON THE WEIGHT OF THE ZINC ANODE, SAID CELL ALSO CONTAINING AN ETHYLENE OXIDE POLYMER SELECTED FROM THE GROUP CONSISTING OF DIETHYLENE GLYCOL, TRIETHYLENE GLYCOL, POLYETHYLENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF FROM ABOUT 190 TO ABOUT 7,000, C4 AND LOWER ALKYL ETHERS THEREOF AND C4 AND LOWER ALKANOATE ESTERS THEREOF, SAID ETHYLENE OXIDE POLYMER AND SAID MERCURY IN COMBINATION PROVIDING AN IMPROVED STORAGE STABILITY UNDER COMPARABLE CONDITIONS FOR SAID CELL AS PROVIDED BY A CELL OTHERWISE IDENTICAL BUT CONTAINING THE SAME QUANTITY OF MERCURY IN THE ABSENCE OF SAID ETHYLENE OXIDE POLYMER.

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