Ronald E Dotson

US Patent:

42723388, Jun 9, 1981

Filed:

Jun 6, 1979

Appl. No.:

6/046403

Inventors:

Richard W. Lynch - Chattanooga TN
Garland E. Hilliard - Cleveland TN
Ronald L. Dotson - Cleveland TN

Assignee:

Olin Corporation - New Haven CT

International Classification:

C25B 146

US Classification:

204 98

Abstract:

A process for removing dissolved halogen gas and oxyhalide ions from an aqueous alkali metal halide solution containing them which comprises reacting said aqueous alkali metal halide solution with an inorganic peroxide, and adjusting the pH of said aqueous alkali metal halide solution to a pH within the range from about 6 to about 11 with an inorganic base, whereby a purified alkali metal halide solution of reduced concentration of said dissolved halogen gas and oxyhalide ions is produced.

US Patent:

41839072, Jan 15, 1980

Filed:

Aug 28, 1978

Appl. No.:

5/937224

Inventors:

Richard W. Lynch - Chattanooga TN
Ronald L. Dotson - Cleveland TN

Assignee:

Olin Corporation - New Haven CT

International Classification:

C01B 1106

US Classification:

423474

Abstract:

Calcium hypochlorite useful as a commercial sanitizing agent and swimming pool disinfectant is produced by a process wherein calcium hydroxide and organic hypochlorite are reacted in a first reaction zone to produce calcium hypochlorite. The portion of the calcium hydroxide remaining unreacted is recovered along with product calcium hypochlorite in a mixture of solids. In a second reaction zone, an aqueous solution of sodium hydroxide is reacted with an organic hypochlorite to form an aqueous phase containing sodium hypochlorite and an organic phase. The aqueous phase is separated from the organic phase. Chlorine is reacted with the mixture of solids of the first reaction zone and the aqueous phase of the second reaction zone in a third reaction zone to produce an aqueous slurry of calcium hypochlorite particles. The calcium hypochlorite particles are thereafter recovered and dried in granular form.

US Patent:

42539234, Mar 3, 1981

Filed:

Jun 1, 1979

Appl. No.:

6/044749

Inventors:

Richard W. Lynch - Chattanooga TN
Garland E. Hilliard - Cleveland TN
Ronald L. Dotson - Cleveland TN

Assignee:

Olin Corporation - New Haven CT

International Classification:

C25B 134
C25B 102
C25B 1302
C25B 1308

US Classification:

204 98

Abstract:

Current efficiency in an electrolytic membrane cell for the production of concentrated potassium hydroxide is considerably increased by employing in the electrolytic membrane cell a membrane selected from a group consisting of an amine modified perfluorosulfonic acid membrane such as a primary amine, diamine, or polyamine modified perfluorosulfonic acid membrane, and a laminated perfluorosulfonic acid acid membrane, and a laminated perfluorosulfonic acid membrane comprised of at least two unmodified perfluorosulfonic acid membranes of different thickness and different equivalent weight.

US Patent:

42331226, Nov 11, 1980

Filed:

Jun 1, 1979

Appl. No.:

6/044827

Inventors:

Richard W. Lynch - Chattanooga TN
Garland E. Hilliard - Cleveland TN
Ronald L. Dotson - Cleveland TN

Assignee:

Olin Corporation - New Haven CT

International Classification:

C25B 134

US Classification:

204 98

Abstract:

Improved current efficiency is obtained in an electrolytic membrane cell for the production of potassium hydroxide by employing in combination: (a) a membrane comprised of a carboxylic acid substituted polymer prepared by reacting a fluorinated olefin with a comonomer having a functional group selected from the group consisting of carboxylic acid and a functional group which can be converted to carboxylic acid; (b) a potassium chloride brine feed through the anolyte chamber of the cell having a concentration in the range from about 250 to about 300 grams of potassium chloride per liter; (c) a cell operating temperature in the range from about 90. degree. to about 100. degree. C. ; (d) producing a depleted brine in the anolyte chamber after electrolysis in which the potassium chloride consumed by electrolysis ranges from about 5 to about 15 percent by weight of the potassium chloride originally present in the brine feed, and (e) maintaining a catholyte potassium hydroxide concentration in the range from about 500 to about 600 grams potassium hydroxide per liter.

US Patent:

41826612, Jan 8, 1980

Filed:

Jul 31, 1978

Appl. No.:

5/929092

Inventors:

Richard W. Lynch - Chattanooga TN
Ronald L. Dotson - Cleveland TN

Assignee:

Olin Corporation - New Haven CT

International Classification:

C25B 302

US Classification:

204 78

Abstract:

An electrolytic process for preparing organic hypohalite compounds from an aqueous brine and organic alcohol solution in a multi-chamber membrane type cell. For example, tertiary butyl hypochlorite is prepared in a membrane cell from tertiary butyl alcohol and a sodium chloride brine. An organic solvent such as carbon tetrachloride can be used to extract the organic hypohalite formed in the aqueous brine phase either during or after electrolysis.