Jerry H Walker

US Patent:

43755267, Mar 1, 1983

Filed:

Nov 20, 1981

Appl. No.:

6/323329

Inventors:

John D. Zupanovich - Pittsburgh PA
John G. Myers - Pittsburgh PA
Jerry L. Walker - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C08K 322

US Classification:

524436

Abstract:

The instant invention is directed to a method for reducing the viscosity of magnesium hydroxide filter cake paste which comprises adding an anionic polymer or copolymer to the magnesium hydroxide filter cake paste. The instant invention is also directed to a stable magnesium hydroxide dispersion comprising an anionic polymer, water and magnesium hydroxide.

US Patent:

39310434, Jan 6, 1976

Filed:

Jun 21, 1973

Appl. No.:

5/372136

Inventors:

Jerry Lee Walker - Coraopolis PA
Thomas Edward Cornelius - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C23F 1114

US Classification:

252392

Abstract:

Methods and compositions for inhibiting the corrosion of metal components in which filming amine emulsions containing ethoxylated beta amines and diamines are utilized.

US Patent:

39561640, May 11, 1976

Filed:

Sep 23, 1974

Appl. No.:

5/508125

Inventors:

Jerry Lee Walker - Coraopolis PA
Thomas Edward Cornelius - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C02B 506

US Classification:

252180

Abstract:

Combination of ethylenediaminetetraacetic acid and nitrilotriacetic acid or water soluble salts thereof for the removal and prevention of scale in steam generators.

US Patent:

44527039, Jun 5, 1984

Filed:

May 24, 1983

Appl. No.:

6/497543

Inventors:

Paul H. Ralston - Bethel Park PA
Sandra L. Whitney - Oakdale PA
Jerry L. Walker - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C02F 510

US Classification:

210698

Abstract:

The instant invention is directed to a method for preventing the formation of scale in sugar evaporation equipment comprising adding to the juice from 0. 1 to 200 ppm of a polycarboxylic acid or its salt selected from the group consisting of polymaleic acid, amine adducts of maleic anhydride polymers, phosphonobutane tri-carboxylic acid, phosphinocarboxylic acids and copolymers of acrylic acid and an hydroxylated lower alkyl acrylate.

US Patent:

45127743, Apr 23, 1985

Filed:

Dec 27, 1978

Appl. No.:

5/973783

Inventors:

John G. Myers - Pittsburgh PA
Douglas P. Logan - Coraopolis PA
Jerry L. Walker - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C10L 132

US Classification:

44 51

Abstract:

Residual fuel oil conditioners comprising an aqueous solution of (a) from 2. 0 to 20. 0% by weight of at least one water soluble metal salt selected from the halides, sulfates, and nitrates of magnesium, manganese, zinc, copper, lead, iron, nickel, aluminum, calcium and barium; and (b) from 0. 1 to 25. 0% by weight of a surfactant, preferably a nonionic surfactant having an HLB of from 12 to 17.

US Patent:

46817379, Jul 21, 1987

Filed:

Sep 17, 1985

Appl. No.:

6/777046

Inventors:

Jerry L. Walker - Coraopolis PA
John D. Zupanovich - Pittsburgh PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C23F 1104
C02F 170
C09K 300

US Classification:

422 16

Abstract:

A method of inhibiting corrosion due to dissolved oxygen is disclosed, whereby chelant-stabilized sodium erythorbate, alone or in combination with conventional corrosion inhibitors, is added to boiler water to prevent corrosion by reducing dissolved oxygen levels in boiler feedwater.

US Patent:

41928440, Mar 11, 1980

Filed:

Aug 23, 1978

Appl. No.:

5/936294

Inventors:

William L. Trace - Pittsburgh PA
Jerry L. Walker - Coraopolis PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C23F 1102
C23F 1104
C23F 1114

US Classification:

422 11

Abstract:

Use of methoxypropylamine as a neutralizing amine in combination with hydrazine to prevent corrosion in steam condensate systems or in other low solids aqueous systems.

US Patent:

46407936, Feb 3, 1987

Filed:

May 9, 1985

Appl. No.:

6/732466

Inventors:

Leonard J. Persinski - Pittsburgh PA
Jerry L. Walker - Coraopolis PA
Bennett P. Boffardi - Bethel Park PA

Assignee:

Calgon Corporation - Pittsburgh PA

International Classification:

C02F 512
C02F 510
C23F 1100
C08F22056

US Classification:

252 82

Abstract:

The instant invention is directed to an admixture, and its use in inhibiting scale and corrosion in aqueous systems, comprising: (a) a water-soluble polymer having a weight average molecular weight of less than 25,000, as determined by low angle laser light scattering, comprising an unsaturated carboxylic acid and an unsaturated sulfonic acid, or their salts, having a ratio of 1:20 to 20:1, and (b) at least one compound selected from the group consisting of water-soluble polycarboxylates, phosphonates, phosphates, polyphosphates, metal salts and sulfonates. The instant invention is also directed to a method of inhibiting the formation of insoluble alluvial, metal oxide and metal hydroxide deposits in an aqueous system, comprising adding to the system at least 0. 1 mg/l of a water-soluble polymer having a weight average molecular weight of less than 25,000, as determined by low angle laser light scattering, comprising an unsaturated carboxylic acid and an unsaturated sulfonic acid, or their salts, having a ratio of 1:20 to 20:1 and a phosphonate.