Process of preparing shaped articles of acrylonitrile polymer containing silver insoluble particles

Claim 1

A PROCESS FOR PREPARING SHAPED POLYMERIC ARTICLES WHICH COMPRISES THE STEPS, IN SEQUENCE, OF MIXING 17-73 MOLE PERCENT OF WATER, 5-35 MOLE PERCENT OF SILVER NITRATE AND 15-70 MOLE PERCENT OF AT LEAST ONE POLYMERIZABLE MONOMER, SAID MONOMER COMPOSED OF 75-100%, BY WEIGHT, OF ACRYLONITRILE AND THE REMAINDER BEING AN ETHYLENICALLY UNSATURATED MONOMER COPOLYMERIZABLE WITH ACRYLONITRILE, THE MOLE PERCENTAGES OF THE WATER, THE SILVER NITRATE AND THE MONOMER FALLING WITHIN THE AREA ABCDEFG OF FIGURE 1; POLYMERIZING SAID MONOMER TO FORM A SILVER NITRATE-CONTAIING POLYMER; SHAPING SAID SILVER NITRATE-CONTAINING POLYMER INTO A SHAPED ARTICLE; REACTING AND CONVERTING SAID SILVER NITRATE TO WATER-INSOLUBLE PARTICLES SELECTED FROM THE GROUP CONSISITING OF SILVER, SILVER SULFIDE, SILVER CHLORIDE, SILVER BROMIDE AND SILVER IODIDE PARTICLES; AND, THEREAFTER, DRYING THE PARTICLE-CONTAINING SHAPED ARTICLE AT A TEMPARATURE OF 50-250*C.