Gels and method of making

• US 3,141,729 A
• Filed: 07/11/1960
• Issued: 07/21/1964
• Est. Priority Date: 07/11/1960
• Status: Expired due to Term

• Current Assignee: Edward J. Duzak, Richard G. Clarke, Richard H. Groth
• Original Assignee: Edward J. Duzak, Richard G. Clarke, Richard H. Groth
• Inventors: Clarke, Richard G., Groth, Richard H., Duzak, Edward J.
• Application Number:
  US04/041,801
• Time in Patent Office: 1,471 Days
• US Class Current: 95/106
• CPC Class Codes: B01J 19/06 Solidifying liquids making microcapsules B01J13/02

Claims

1. A REGENERABLE ABSORBENT FOR CARBON DIOXIDE GAS HAVING THE PROPERTY OF BEING ABLE TO READILY ABSORB AND DESORB CARBON DIOXIDE WHICH COMPRISES A COGEL OF METAL OXIDES OF A FIRST METAL SELECTED FROM THE GROUP CONSISTING OF LITHIUM AND THE DIVALENT METALS ZINC, IRON, NICKEL, COPPER, COBALT, MANGANESE, MAGNESIUM, CALCIUM, BARIUM, AND CADMIUM, INCLUDING MIXTURES OF THE FOREGOING, AND A SECOND METAL SELECTED FROM THE GROUP CONSISTING OF THE TERVALENT METALS ALUMINUM, IRON, CHROMIUM, INCLUDING MIXTURES OF THE FOREGOING, THE MOLE PERCENT RATIO OF ONE OF SAID METALS TO THE OTHER METAL BEING IN THE RANGE OF FROM ABOUT 10 TO 70 AND 90 TO 30 PERCENT, RESPECTIVELY, AND WHICH HAS BEEN PREPARED BY CO-PRECIPITATION FROM A SOLUTION COMPRISING A CARBONATE WHICH IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL CARBONATE AND AMMONIUM CARBONATE, FOLLOWED BY DRYING.