George E Cook

US Patent:

46647740, May 12, 1987

Filed:

Feb 20, 1985

Appl. No.:

6/703252

Inventors:

Arthur S. Chu - East Amherts NY
Edward F. Bart - Califon NJ
George R. Cook - Buffalo NY
David M. Horbachewski - West Seneca NY

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

C10G 900
C10G 1100
C10C 104
C10C 300

US Classification:

208 6

Abstract:

A novel coal tar based, low solids content, pitch is produced by oxidizing a selected coal tar distillation fraction with air to oxygen at elevated temperatures. This pitch is applicable to end use in which low solids content is desirable. Specifically it may be advantageously applied to the impregnation of carbon electrodes. The oxidized selected coal tar based low solids material described is characterized by high carbon yield and higher product density and has a higher in situ coking value and lower sulfur content which make it particularly beneficial when it is used as an impregnating pitch as compared to the currently commercially used petroleum based pitch.

US Patent:

45376352, Aug 27, 1985

Filed:

Dec 5, 1983

Appl. No.:

6/557784

Inventors:

Edward F. Bart - Califon NJ
Arthur S. Chu - E. Amherst NY
George R. Cook - Buffalo NY

Assignee:

Allied Corporation - Morris Township, Morris County NJ

International Classification:

C08L 9500
C09D 324
C10C 304

US Classification:

106277

Abstract:

A driveway sealer less affected by temperature extremes can be made from an oxidized coal tar distillation cut. The sealer incorporates a middle cut crude distillate which is oxidized to produce a product of desired viscosity. The sealer incorporating this oxidized middle cut is less affected by extremes in weather as compared to regular sealer tar. It has more consistent physical properties. A significant distinguishing characteristic derived from the use of this tar in a driveway sealer is the reduced odor of the resulting sealer. The oxidation (condensation) step is carried out at elevated temperature by sparging copious quantities of air rapidly into the tar at elevated temperatures of the order of about 300. degree. F. to 800. degree. F. (200. degree. C. -430. degree. C. ).