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Brent A Tennant, 714906 Quincy Ct, Kingsport, TN 37664

Brent Tennant Phones & Addresses

4906 Quincy Ct, Kingsport, TN 37664    423-9673824   

374 Clearwater Dr, Kingsport, TN 37664    423-2884337   

Church Hill, TN   

4369 Carters Valley Rd, Church Hill, TN 37642   

Work

Position: Professional/Technical

Education

Degree: Graduate or professional degree

Mentions for Brent A Tennant

Brent Tennant resumes & CV records

Resumes

Brent Tennant Photo 18

Brent Tennant

Location:
Kingsport, TN
Industry:
Chemicals
Work:
Eastman Chemical Company 1977 - Jul 2015
Research Fellow
Habitat For Humanity International 2001 - 2010
Volunteer
Education:
University of Delaware 1974 - 1977
Doctorates, Doctor of Philosophy, Engineering, Philosophy
University of Illinois at Urbana - Champaign 1972 - 1974
Bachelors, Bachelor of Science, Chemical Engineering
Skills:
Chemical Engineering, Polymers, Organic Chemistry, Process Engineering, Chemistry, R&D, Materials Science, Process Simulation, Process Optimization, Analytical Chemistry, Organic Synthesis, Coatings, Product Development, Uv/Vis, Characterization, Spectroscopy, Mass Spectrometry, Nmr
Brent Tennant Photo 19

Brent Tennant

Publications & IP owners

Us Patents

Processes For The Preparation Of Higher Molecular Weight Ketones

US Patent:
6979751, Dec 27, 2005
Filed:
Nov 14, 2003
Appl. No.:
10/713727
Inventors:
Brent Alan Tennant - Kingsport TN, US
James Charles Ciula - Indianapolis IN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C045/72
US Classification:
568345, 568350, 568390, 568396
Abstract:
Processes for producing higher molecular weight ketones are disclosed that include the steps of feeding an aldol catalyst solution, a lower molecular weight aldehyde, and a lower molecular weight ketone, through a reactor provided with a solid hydrogenation catalyst and hydrogen gas; recovering a liquid reactor effluent containing the higher molecular weight ketone as a reaction product; and recycling a portion of the recovered liquid reactor effluent back through the reactor.

Process For The Oxidative Purification Of Terephthalic Acid

US Patent:
7074954, Jul 11, 2006
Filed:
Aug 21, 2003
Appl. No.:
10/645737
Inventors:
Ronald Buford Sheppard - Voorburg, NL
Brent Alan Tennant - Kingsport TN, US
Thomas Earl Woodruff - Kingsport TN, US
Robert Lin - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 69/52
C07C 51/255
C07C 51/42
US Classification:
562486, 562418, 562487, 562606
Abstract:
Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The process produces purified carboxylic acid slurry having good color and low impurity levels without the use of purification steps like hydrogenation or an impurity removal process.

Process For The Oxidative Purification Of Terephthalic Acid

US Patent:
7161027, Jan 9, 2007
Filed:
Aug 21, 2003
Appl. No.:
10/645734
Inventors:
Ronald Buford Sheppard - Voorburg, NL
Brent Alan Tennant - Kingsport TN, US
Thomas Earl Woodruff - Kingsport TN, US
Robert Lin - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 69/52
C07C 51/255
C07C 51/42
US Classification:
562486, 562416, 562487, 562606
Abstract:
Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The purified carboxylic acid slurry 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 or filtrate purge.

Process For The Oxidative Purification Of Terephthalic Acid

US Patent:
7358392, Apr 15, 2008
Filed:
Feb 2, 2006
Appl. No.:
11/346393
Inventors:
Ronald Buford Sheppard - Kingsport TN, US
Brent Alan Tennant - Kingsport TN, US
Thomas Earl Woodruff - Kingsport TN, US
Robert Lin - Kingsport TN, US
Ruairi Seosamh O'Meadhra - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 51/42
C07C 51/255
US Classification:
562486, 562416, 562487
Abstract:
Disclosed is a process to produce a purified carboxylic acid slurry. The process comprises removing impurities from a crystallized product in a solid liquid displacement zone to form the purified carboxylic acid slurry. The process produces purified carboxylic acid slurry having good color and low impurity levels without the use of purification steps like hydrogenation or an impurity removal process.

Two Stage Oxidation Process For The Production Of Aromatic Dicarboxylic Acids

US Patent:
7485747, Feb 3, 2009
Filed:
May 28, 2002
Appl. No.:
10/156312
Inventors:
Ronald Buford Sheppard - Kingsport TN, US
Brent Alan Tennant - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 51/16
C07C 51/42
US Classification:
562487, 562416
Abstract:
Disclosed is a process for producing a benzenedicarrboxylic acid such as terephthalic acid wherein a dialkyl benzene compound and acetic acid having catalyst components dissolved therein are fed to a first reaction zone wherein the dialkyl benzene compound is oxidized with molecular oxygen to provide a first oxidation zone product comprising a benzenedicarboxylic acid containing minor amounts of mono-carboxylic acid by-products such as carboxybenzaldehyde and toluic acid. The first oxidation zone product comprising a slurry of a benzenedicarboxylic acid containing minor amounts of mono-carboxylic acid by-products is fed to a second oxidation reaction zone that is operated under more severe conditions of temperature and pressure. The rate of the feed of a molecular oxygen containing gas to the second oxidation zone is about 3% or less of the the rate of the feed of the molecular oxygen containing gas to the first oxidation zone. The benzenedicarboxylic acid product obtained contains a total concentration of carboxybenzaldehyde and toluic acid of about 150 ppmw or less.

Process For The Preparation Of Tetraalkylcyclobutane-1,3-Diol In The Presence Of A Cobalt-Based Catalyst

US Patent:
7521583, Apr 21, 2009
Filed:
Nov 30, 2007
Appl. No.:
11/948047
Inventors:
Anthony Dominick Messina - Kingsport TN, US
Steven Thomas Perri - Kingsport TN, US
Zhufang Liu - Kingsport TN, US
Philip Conrad Heidt - Kingsport TN, US
Brent Alan Tennant - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 35/04
US Classification:
568839, 568338, 568301
Abstract:
The present invention relates to the production of 2,2,4,4-tetramethylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of 2,2,4,4-tetramethylcyclobutane-1,3-diol by hydrogenation of 2,2,4,4-tetramethylcyclobutane-1,3-dione in the presence of a cobalt-based catalyst.

Process For The Preparation Of A Tetraalkylcyclobutane-1,3-Diol Using An Iridium-Promoted Cobalt-Based Catalyst

US Patent:
7524994, Apr 28, 2009
Filed:
Nov 30, 2007
Appl. No.:
11/947941
Inventors:
Anthony Dominick Messina - Kingsport TN, US
Steven Thomas Perri - Kingsport TN, US
Zhufang Liu - Kingsport TN, US
Philip Conrad Heidt - Kingsport TN, US
Brent Alan Tennant - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 35/04
C07C 31/18
C07C 29/143
US Classification:
568839, 568852, 568862
Abstract:
The present disclosure relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol. In one embodiment, the present invention relates to the production of a 2,2,4,4-tetraalkylcyclobutane-1,3-diol by hydrogenation of a 2,2,4,4-tetraalkylcyclobutane-1,3-dione in the presence of an iridium-promoted cobalt-based catalyst.

Processes For Producing Aromatic Dicarboxylic Acids

US Patent:
7550627, Jun 23, 2009
Filed:
Mar 8, 2005
Appl. No.:
11/075009
Inventors:
Gino Georges Lavoie - Kingsport TN, US
Robert Thomas Hembre - Johnson City TN, US
Joseph Nathaniel Bays - Kingsport TN, US
Daniel Burts Compton - Kingsport TN, US
Brent Alan Tennant - Kingsport TN, US
Bryan Wayne Davenport - Columbia SC, US
David Lange - Irmo SC, US
Thomas Richard Floyd - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C07C 51/16
C07C 63/00
US Classification:
562413, 562480
Abstract:
Processes for producing aromatic dicarboxylic acids are disclosed, the processes including a step of combining in a reaction medium a dialkyl aromatic, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature from about 125 C. to about 155 C. , in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the weight ratio of cobalt to manganese in the reaction mixture is from about 10 to about 400. The processes provide improved conversion, while reducing the formation of carbon oxides and other by-products.

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