Ernest W Arnold

US Patent:

7132566, Nov 7, 2006

Filed:

Sep 22, 2003

Appl. No.:

10/667744

Inventors:

Philip Edward Gibson - Kingsport TN, US
Robert Lin - Kingsport TN, US
Eric Jackson Fugate - Gate City VA, US
Ernest William Arnold - Lake Wylie SC, US

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C07C 51/16
C07C 51/42

US Classification:

562486, 562416, 562485

Abstract:

Disclosed is a process to produce a purified carboxylic acid product. The process comprises removing impurities from a crude carboxylic acid slurry in a solid-liquid displacement zone to form a slurry product. The slurry product if further treated in a staged oxidation zone and a crystallization zone to from a crystallized product. The crystallized product is further cooled in a cooling zone and subsequently filtered and dried in a filtration and drying zone. The process produces purified carboxylic acid product having good color and low impurity levels without the use of purification steps like hydrogenation.

US Patent:

20060047150, Mar 2, 2006

Filed:

Jun 16, 2005

Appl. No.:

11/154221

Inventors:

Alan Wonders - Kingsport TN, US
Thomas Lightfoot - Kingsport TN, US
Charles Sumner - Kingsport TN, US
Thomas Woodruff - Kingsport TN, US
Ernest Arnold - Lake Wylie SC, US
Eric Fugate - Gate City VA, US
Charles Hitchcock - Jonesborough TN, US
Brent Tennant - Kingsport TN, US

International Classification:

C07C 51/265

US Classification:

562414000

Abstract:

Disclosed is an optimized process and apparatus for more efficiently and economically carrying out the liquid-phase oxidation of an oxidizable compound. Such liquid-phase oxidation is carried out in a bubble column reactor that provides for a highly efficient reaction at relatively low temperatures. When the oxidized compound is para-xylene and the product from the oxidation reaction is crude terephthalic acid (CTA), such CTA product can be purified and separated by more economical techniques than could be employed if the CTA were formed by a conventional high-temperature oxidation process.

US Patent:

51571021, Oct 20, 1992

Filed:

Sep 23, 1991

Appl. No.:

7/763840

Inventors:

Charles E. Sumner - Kingsport TN
Ernest W. Arnold - Blountville TN
Gary D. Boone - Johnson City TN

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C08G 6302

US Classification:

528272

Abstract:

Provided is indeno[1,2-. beta. ] fluorene-6,12-diol, useful as an intermediate to polyesters. Also provided are derivatives of this compound and novel polyesters having residues of indeno[1,2-. beta. ] fluorene-6,12-diol or its derivatives copolymerized therein and shaped or formed articles comprised of the novel polyesters.

US Patent:

53591348, Oct 25, 1994

Filed:

Aug 14, 1992

Appl. No.:

7/930887

Inventors:

Bruce L. Gustafson - Kingsport TN
Charles E. Sumner - Kingsport TN
Michael Bellas - Kingsport TN
Gether Irick - Gray TN
Dewey W. Fuller - Bristol TN
Ernest W. Arnold - Blountville TN
Eric J. Fugate - Gate City VA

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C07C 51265

US Classification:

562416

Abstract:

Provided is a facile three step process for preparing 2-phenylterephthalic acid starting with p-xylene, followed by alkylation, dehydrogenation, and oxidation of the methyl groups corresponding to the origional p-xylene. The product, 2-phenylterephthalic acid, is useful as an intermediate in the synthesis of polyesters comprised of residues of 2-phenylterephthalic acid.

US Patent:

51551837, Oct 13, 1992

Filed:

Apr 16, 1991

Appl. No.:

7/685776

Inventors:

Ernest W. Arnold - Blountville TN
Joseph J. Watkins - Kingsport TN
David R. Fagerburg - Kingsport TN
Paul B. Lawrence - Kingsport TN

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

C08G 7510
C08G 7514

US Classification:

525537

Abstract:

Disclosed is a process for preparing a final copoly(arylene sulfide) by contacting an original copoly(phenylene sulfide) with a poly(phenylene sulfide) in the melt phase. The final copoly(arylene sulfide) exhibits an enhanced rate of crystallization.

US Patent:

53347544, Aug 2, 1994

Filed:

Aug 14, 1992

Appl. No.:

7/930890

Inventors:

Charles E. Sumner - Kingsport TN
Bruce L. Gustafson - Kingsport TN
Ernest W. Arnold - Blountville TN
Eric J. Fugate - Gate City VA
Dewey W. Fuller - Bristol TN

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C07C 51215
C07C 6739

US Classification:

562416

Abstract:

Provided is a process for preparing 2,5-diphenylterephthalic acid, which is useful in preparing certain polyesters, especially liquid-crystalline polyesters. In this process, p-xylene is di-alkylated with cyclohexene to provide 2,5-dicyclo-hexyl-p-xylene, which is in turn dehydrogenated to provide 2,5-diphenylxylene. 2,5-Diphenylxylene is then oxidized to provide 2,5-diphenylterephthalic acid by utilization of a cobaltous/manganous/bromide oxidation system.