| abstract |
A BIBULOUS POLYMERIC MATERIAL SUITABLE FOR USE IN MAKING SEPARATORS FOR SILVER-ZINC BATTERIES, THE MATERIAL BEING CHARACTERIZED BY A VERY LOW AVERAGE PORE DIAMETER, ADVANTAGEOUSLY BELOW 300 ANGSTROMS, AND BY A HIGH VOLUME POROSITY, ADVANTAGEOUSLY ABOVE 50%. THIS MATERIAL IS PRIMARILY A COPOLYMER OF METHACRYLIC ACID AND A HYDROPHOBIC MONOMER E.G. STYRENE OR OF METHACRYLIC ACID AND A CROSS-LINKING MONOMER, MOST ADVANTAGEOUSLY DIVINYL BENZENE: AN ESPECIALLY ADVANTAGEOUS PROCESS FOR MAKING SUCH MATERIALS IS ALSO DISCLOSED AND CLAIMED. |