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Bradley Dayvolt Phones & Addresses

  • 4190 Skyland Dr, Kingsport, TN 37664 (423) 230-0395
  • Chuckey, TN
  • Evansville, IN

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Bradley Dayvolt Photo 1

Senior Associate Chemical Engineer At Eastman Chemical Company

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Location:
Johnson City, Tennessee Area
Industry:
Chemicals

Publications

Us Patents

Cellulose Ester Compositions Having Low Birefringence And Films Made Therefrom

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US Patent:
8329893, Dec 11, 2012
Filed:
Aug 22, 2008
Appl. No.:
12/196333
Inventors:
Marcus David Shelby - Fall Branch TN, US
Michael Eugene Donelson - Kingsport TN, US
Bradley Howard Dayvolt - Kingsport TN, US
Alan Kent Wilson - Kingsport TN, US
Bryan Kirkman - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
A61K 6/00
A61K 9/28
C08B 3/16
US Classification:
536 64, 536 65, 524 37, 524 51
Abstract:
The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. Therefore, these films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i. e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation.

Cellulose Ester Compositions Having Low Birefringence And Films Made Therefrom Comprising A Plasticizer

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US Patent:
8344134, Jan 1, 2013
Filed:
Aug 22, 2008
Appl. No.:
12/196331
Inventors:
Marcus David Shelby - Fall Branch TN, US
Michael Eugene Donelson - Kingsport TN, US
Bradley Howard Dayvolt - Kingsport TN, US
Alan Kent Wilson - Kingsport TN, US
Bryan Kirkman - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C08B 3/16
B29D 7/01
D01F 1/02
US Classification:
536 64, 536 65, 264 134, 264211
Abstract:
The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. Therefore, these films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i. e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation.

Cellulose Ester Compositions Having Low Bifringence And Films Made Therefrom Comprising A Plasticizer

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US Patent:
20100089288, Apr 15, 2010
Filed:
Dec 10, 2009
Appl. No.:
12/634736
Inventors:
Marcus David Shelby - Fall Branch TN, US
Michael Eugene Donelson - Kingsport TN, US
Bradley Howard Dayvolt - Kingsport TN, US
Alan Kent Wilson - Kingsport TN, US
Bryan Kirkman - Kingsport TN, US
Assignee:
EASTMAN CHEMICAL COMPANY - Kingsport TN
International Classification:
C09D 101/10
US Classification:
10617012, 10616801, 10617015, 10617031, 10617026
Abstract:
The present inventions relate to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have low intrinsic birefringence. These films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). These films are useful in polarizer, protective, and compensator films and in molded optical parts, such as lenses. The resins of the present inventions can also be made to have “+C plate” behavior either by melt or solvent based processing, which is uncharacteristic of cellulose esters. Such +C behavior allows films having unique compensatory behavior. Other embodiments of the invention relate to methods of melt casting films while minimizing birefringence. Another embodiment of the invention is directed to films made from the cellulose esters described herein further comprising a plasticizer.

Cellulose Ester Compositions Having Low Bifringence And Films Made Therefrom

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US Patent:
20100093996, Apr 15, 2010
Filed:
Dec 10, 2009
Appl. No.:
12/634731
Inventors:
Marcus David Shelby - Fall Branch TN, US
Michael Eugene Donelson - Kingsport TN, US
Bradley Howard Dayvolt - Kingsport TN, US
Alan Kent Wilson - Kingsport TN, US
Bryan Kirkman - Kingsport TN, US
Assignee:
Eastman Chemical Company - Kingsport TN
International Classification:
C08B 3/16
C08B 3/18
US Classification:
536 65, 536 64
Abstract:
The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. These films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation.

Process For Recovering Cellulose Ester Fines

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US Patent:
42712912, Jun 2, 1981
Filed:
Jul 28, 1980
Appl. No.:
6/172911
Inventors:
Bradley H. Dayvolt - Chuckey TN
Assignee:
Eastman Kodak Company - Rochester NY
International Classification:
C08B 326
US Classification:
536 65
Abstract:
Process for recovering entrained cellulose ester fines from scrubber-coolant water by forming a wet foam containing the fines, floating the wet foam upwardly in a vertically disposed foam flotation column and outwardly along a horizontal straight-line path from which liquid from the wet foam is drained and the fines are introduced in the form of a drier foam into a vessel for subsequent dissolving of the fines, with the horizontal straight-line path being pitched downardly from the horizontal plane.
Bradley H Dayvolt from Kingsport, TN, age ~72 Get Report