Jock A Hamilton

57531811, May 19, 1998

Mar 21, 1996

8/621199

Jock Hamilton - Piru CA

C23F 1118

422 18

The invention discloses a composition and method for the enhancement of polyguanide based water sanitizing systems and for conversion of such systems to alternative water sanitizing systems if desired. The method includes the addition of an enhancing or conversion agent selected from the group consisting of a halogen salt, a Bromohydantoin and a chlorobromohydantoin in an amount to provide a concentration of approximately from 1 to 50 parts per million. Sodium borate and/or polyphosphate may also be added to the system to improve the effectiveness of the enhancing agent. The system may be converted to an alternative water sanitizing system by the addition of a sanitizing agent selected from the group consisting of chlorine, copper, silver, quaternary ammonium compounds, and polyquaternary ammonium compounds, which may be released into the water at a rate of 0. 01 to 1 ounces per hour per 10,000 gallons of water for a period until conversion is complete.

52545261, Oct 19, 1993

Aug 24, 1989

7/397973

Jock Hamilton - Piru CA

A01N 5908
A01N 5926

504119

The invention discloses an anti-microbial composition, and method for its use for the long term inhibition of the growth of algae in swimming pools, spas, and similar bodies of water. The method includes the addition of bromide ions to the body of water in amounts sufficient to provide a concentration of bromine of approximately 0. 1 to 100 ppm. A polyphosphate is premixed with the source of bromide ions in a ratio of from 5 to 15 weight parts polyphosphate to each 100 weight parts of said source of bromide ions. A chlorine containing oxidizer is added to the water in a amount sufficient to oxidize the bromide ions to bromine and provide a concentration of chlorine containing oxidizer of approximately 0. 2 to 10 ppm to safely sterilize the water.

49063847, Mar 6, 1990

Mar 20, 1989

7/325973

Jock Hamilton - Piru CA

C02F 508

210697

There is disclosed a method for the treatment of confined bodies of water such as a swimming pool to remove scale deposits from the surfaces of the vessel containing the water. The water is acidified with a mixture of hydrochloric acid, sulfamic acid and sodium bisulfate to eliminate its total alkalinity, as determined by a standard neutralization test. The water is continuously or repeatedly monitored for total alkalinity following the initial addition of acid, to insure that sufficient acid has been added. The acidified water has a tendency to gain total alkalinity as the scale deposits are removed during the treatment, and monitoring detects this change, permitting correction by addition of acid. After the treatment with the acid, which can last from several hours to several days, any excess treatment acid is neutralized by the addition of a neutralizing agent which is preferably magnesium oxide or magnesium hydroxide. The neutralizing agent is added to neutralize the acid and is added in a quantity which does not increase the pH of the pool to a value above about 7. 8 to 8.

48469793, Jul 11, 1989

Aug 12, 1987

7/084454

Jock Hamilton - Los Angeles CA

C02F 150

210754

There is disclosed a chemical algacide composition, and method for its use, to prevent and remove yellow algae deposits in swimming pools, spas and simlar bodies of water. The algacide composition comprises from 5 to about 12. 5 weight percent of a soluble polyphosphate and the balance of an alkali metal or ammonium bromide. The successful use of the algacide composition requires the presence of an oxidizer which is effective to convert the bromide to bromine. This conveniently can be the oxidizer which is used in the water, e. g. , chlorine or sodium hypochloride in swimming pools and spas, or can be an additionally added oxidizer, such as a persulfate, etc. The method comprises the addition of the algacide composition to the water at a dosage sufficient to provide at least 0. 5 ppm of the soluble bromide in the water, and to maintain an active oxidizer in the water.

55275060, Jun 18, 1996

Aug 7, 1995

8/511843

Jock Hamilton - Piru CA

C23F 1118

422 18

The invention discloses a composition and method for the enhancement of polyguanide based water sanitizing systems and for conversion of such systems to alternative water sanitizing systems if desired. The method includes the addition of an enhancing or conversion agent selected from the group consisting of a halogen salt, a Bromohydantoin and a chlorobromohydantoin in an amount to provide a concentration of approximately from 1 to 50 parts per million. Sodium borate and/or polyphosphate may also be added to the system to improve the effectiveness of the enhancing agent. The system may be converted to an alternative water sanitizing system by the addition of a sanitizing agent selected from the group consisting of chlorine, copper, silver, quaternary ammonium compounds, and polyquaternary ammonium compounds, which may be released into the water at a rate of 0. 01 to 1 ounces per hour per 10,000 gallons of water for a period until conversion is complete.

46455779, Feb 24, 1987

Jan 3, 1980

6/109358

Lester Friedman - Long Beach CA
Jock A. Hamilton - Los Angeles CA

United Chemical Corporation - Los Angeles CA

C25B 300
C07D25132

204 62

There is disclosed a method for the conversion of urea to cyanuric acid and cyclic by-products which comprises exposing urea in a liquid state to microwave radiation. Urea in liquid form, either molten anhydrous or in solution, is absorbent to microwave radiation, readily converting to cyanuric acid and cyclic by-products such as ammeline and ammelide. The desired products are substantially transparent to microwave radiation and the method thus avoids degradation of the desired products. Conversion of urea with microwave radiation also avoids the difficulties experienced with thermal decomposition that results from the poor thermal conductivity of the crude reaction products. The method thus permits conversion of urea in the form of a layer of urea directly to cyanuric acid and cyclic by-products.

50452118, Sep 3, 1991

Mar 2, 1990

7/487581

Jock Hamilton - Piru CA

C02F 508
C02F 166

210697

There is disclosed a method for the treatment of confined bodies of water such as a swimming pool to remove scale deposits from the surfaces of the vessel containing the water. The water is acidified with a mixture of hydrochloric acid, sulfamic acid and sodium bisulfate to eliminate its total alkalinity, as determined by a standard neutralization test. The water is continuously or repeatedly monitored for total alkalinity following the initial addition of acid, to insure that sufficient acid has been added. The acidified water has a tendency to gain total alkalinity as the scale deposits are removed during the treatment, and monitoring detects this change, permitting correction by addition of acid. After the treatment with the acid, which can last from several hours to several days, any excess treatment acid is neutralized by the addition of a neutralizing agent which is preferably magnesium oxide or magnesium hydroxide. The netralizing agent is added to neutralize the acid and is added in a quantity which does not increase the pH of the pool to a value above about 7. 8 to 8. 5.