Charles R Rader

US Patent:

44369425, Mar 13, 1984

Filed:

Apr 30, 1979

Appl. No.:

6/034803

Inventors:

Charles G. Rader - Grand Island NY
Stephen Robota - North Tonawanda NY

Assignee:

Occidental Chemical Corporation - Niagara Falls NY

International Classification:

C07C 908

US Classification:

570145

Abstract:

A process for the preparation of compounds of the formula ##STR1## which comprises contacting compounds of the formula ##STR2## wherein n is 0 to 5, and m is 1 to 3 in the vapor phase, with hydrogen fluoride in the presence of a granular, porous high surface area catalyst prepared by treating. alpha. -alumina with hydrogen fluoride.

US Patent:

44446314, Apr 24, 1984

Filed:

Jul 29, 1981

Appl. No.:

6/287967

Inventors:

Tilak V. Bommaraju - Grand Island NY
Charles G. Rader - Grand Island NY

Assignee:

Occidental Chemical Corporation - Niagara Falls NY

International Classification:

C25B 126
C25B 900
C25B 1103
C25B 1108

US Classification:

204 95

Abstract:

An apparatus is provided for reducing the amount of alkali metal chlorate present in the cell liquor from a chlor-alkali cell, said apparatus comprising an electrochemical cell having at least one cathode element and one anode element, a cationic exchange membrane disposed between the anode and cathode elements, and an inlet for introducing chlorate-containing cell liquor and an outlet for removing purified cell liquor, inlet and outlet means for anolyte solution, and means for removing gaseous reaction products. The cathode element of said electrochemical cell is of a high surface area construction, preferably formed from compressed filaments of a ferrous material, such as iron or steel, and having sufficient porosity to permit the flow of cell liquor through the cathode. Preferably, when a plurality of anode and cathode elements are used, these elements are arranged in a staggered configuration in the apparatus to maximize the flow path of alkali metal chloride cell liquor through the apparatus. The purified cell liquor product of said electrochemical cell has a significantly reduced alkali metal chlorate content.

US Patent:

46043012, Aug 5, 1986

Filed:

Mar 18, 1985

Appl. No.:

6/712933

Inventors:

Karl Tari - Buffalo NY
Tilak V. Bommaraju - Grand Island NY
Charles G. Rader - Grand Island NY

Assignee:

Occidental Chemical Corporation - Niagara Falls NY

International Classification:

B05D 512
C25B 1110

US Classification:

427123

Abstract:

A novel process for preparing a diaphragm-deposited activated cathode for use in a chlor-alkali cell is disclosed. The process involves heat-treating the activated cathode in an inert atmosphere, such as a nitrogen atmosphere, or a reducing atmosphere, such as a hydrogen atmosphere, during the baking or sintering of the diaphragm. Diaphragm-deposited activated cathodes prepared according to this invention exhibit better adhesive and stability than those which are prepared using conventional techniques. This, in turn, permits sustained operation in a chlor-alkali cell at a lower voltage for substantial energy savings.

US Patent:

42959519, Oct 20, 1981

Filed:

May 14, 1980

Appl. No.:

6/149814

Inventors:

Tilak V. Bommaraju - Grand Island NY
Theodore H. Dexter - Lewiston NY
Charles G. Rader - Grand Island NY

Assignee:

Hooker Chemicals & Plastics Corp. - Niagara Falls NY

International Classification:

C25B 900
C25B 1103
C25B 1110

US Classification:

204242

Abstract:

A film-coated cathode is provided for the electrolysis of alkali metal halide solutions in the substantial absence of chromium ions. The cathode comprises a conductive substrate, such as titanium, steel, iron, or alloys thereof, coated with an adherent, porous film of a substantially nonconductive material having an average coating thickness of less than about 10. sup. 3 microns. The nonconductive, film-forming material is further characterized as being chemically inert in the halate solution.