Methods for producing liquid oligodynamic compositions

Claim 1

A METHOD FOR PRODUCING OLIGODYAMIC COMPOSITIONS PARTICULARLY USEFUL AS ALGAECIDES, SUCH COMPOSITIONS CONTAINING EFFECTIVE PROPORTIONS OF SILVER MICROPARTICLES WITHIN THE SIZE RANGE OF 200-700 A.U., BEING SUBSTANTIALLY COMPLETELY FREE OF UNREDUCED SILVER, OPALESCENT IN CONCENTRATED FROM, COLORLESS WHEN DILUTED WITH WATER IN PROPORTIONS ON THE ORDER OF 1:508000, STABLE AT TEMPERATURES ON THE ORDER OF 2-60* C., NON-PHOTOSENSITIVE, ODORLESS, TASTELESS AND NON-TOXIC TO HUMANS AND PLANT LIFE, COMPRISING FORMING AN AQUEOUS DISPERSION OF AN IONIZABLEHALOGEN-FREE, SULFUR-FREE GELATIN HAVING A VISCOSITY OF 20-40 MILLIPOISES IN 62/3% AQUEOUS SOLUTION AT 60*C., A PH OF 3-5.1, AND AN ISOELECTRIC POINT OF PH7.8-8.3, ADJUSTING THE PH OF SUCH GELATIN DISPERSION TO ABOUT 9.3, COMBINING SUCH DISPERSION AT A TEMPERATURE NOT EXCEEDING 50* C. WITH AN AQUEOUS SOLUTION OF SILVER NITRATE IN PROPORTIONS SUCH THAT THE GELATIN CONTENT OF THE TOTAL MIXTURE IS 0.5-2.0% BY WEIGHT, AND THEN INTIMATELY MIXING SUCH AQUEOUS MIXTURE WITH A REDUCING MEDIUM COMPRISING EQUAL PARTS BY WEIGHT OF SODIUM SULFITE AND A REDUCINGG AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROQUINONE AND TANNIC ACID, SAID REDUCING MEDIUM CONSTITUTING 0.5-2.0% BY WEIGHT OF THE SILVER NITRATE EMPLOYED AND THE SILVER NITRATE CONSTITUTING NOT MORE THAN 10% BY WEIGHT OF THE TOTAL MIXTURE.

Claim 2

A METHOD FOR PRODUCING OLIGODYAMIC COMPOSITIONS PARTICULARLY USEFUL AS ALGAECIDES, SUCH COMPOSITIONS CONTAINING EFFECTIVE PROPORTIONS OF SILVER MICROPARTICLES WITHIN THE SIZE RANGE OF 200-700 A.U., BEING SUBSTANTIALLY COMPLETELY FREE OF UNREDUCED SILVER, OPALESCENT IN CONCENTRATED FROM, COLORLESS WHEN DILUTED WITH WATER IN PROPORTIONS ON THE ORDER OF 1:508000, STABLE AT TEMPERATURES ON THE ORDER OF 2-60* C., NON-PHOTOSENSITIVE, ODORLESS, TASTELESS AND NON-TOXIC TO HUMANS AND PLANT LIFE, COMPRISING FORMING AN AQUEOUS DISPERSION OF AN IONIZABLEHALOGEN-FREE, SULFUR-FREE GELATIN HAVING A VISCOSITY OF 20-40 MILLIPOISES IN 62/3% AQUEOUS SOLUTION AT 60*C., A PH OF 3-5.1, AND AN ISOELECTRIC POINT OF PH7.8-8.3, ADJUSTING THE PH OF SUCH GELATIN DISPERSION TO ABOUT 9.3, COMBINING SUCH DISPERSION AT A TEMPERATURE NOT EXCEEDING 50* C. WITH AN AQUEOUS SOLUTION OF SILVER NITRATE IN PROPORTIONS SUCH THAT THE GELATIN CONTENT OF THE TOTAL MIXTURE IS 0.5-2.0% BY WEIGHT, AND THEN INTIMATELY MIXING SUCH AQUEOUS MIXTURE WITH A REDUCING MEDIUM COMPRISING EQUAL PARTS BY WEIGHT OF SODIUM SULFITE AND A REDUCINGG AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROQUINONE AND TANNIC ACID, SAID REDUCING MEDIUM CONSTITUTING 0.5-2.0% BY WEIGHT OF THE SILVER NITRATE EMPLOYED AND THE SILVER NITRATE CONSTITUTING NOT MORE THAN 10% BY WEIGHT OF THE TOTAL MIXTURE.