David D Norman

US Patent:

20130072696, Mar 21, 2013

Filed:

Sep 16, 2011

Appl. No.:

13/234277

Inventors:

David William Norman - Kingsport TN, US

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C07D 309/04
C07C 1/20
C07C 47/22

US Classification:

549356, 568448, 585638, 585606

Abstract:

A ternary V—Ti—P mixed oxide is shown to catalytically dehydrate 2-methyl-tetrahydrofuran in high conversion to give piperylene, in good yield. Volatile products collected from this reaction contain piperylene in concentrations as high as 80 percent by weight. Dehydration of glycerol to acrolein in high conversion and moderate selectivity is also demonstrated. The catalyst is also shown to dehydrate other alcohols and ether substrates. The catalyst is resistant to deactivation and maintains activity between runs.

US Patent:

20130072715, Mar 21, 2013

Filed:

Sep 16, 2011

Appl. No.:

13/234313

Inventors:

David William Norman - Kingsport TN, US
Gerald Charles Tustin - Kingsport TN, US
Michael James Nash - Bicester, GB
Lui Deng - Kingsport TN, US
Theresa Sims Barnette - Rogersville TN, US

Assignee:

EASTMAN CHEMICAL COMPANY - Kingsport TN

International Classification:

B01J 27/198
C07C 51/347

US Classification:

562599, 502209

Abstract:

The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the vapor-phase condensation of formaldehyde with acetic acid to generate acrylic acid, particularly using an industrially relevant aqueous liquid feed.

US Patent:

20130072716, Mar 21, 2013

Filed:

Sep 16, 2011

Appl. No.:

13/234323

Inventors:

David William Norman - Kingsport TN, US
Greg Alan King - Mount Carmel TN, US

Assignee:

EASTMAN CHEMICAL COMPANY - Kingsport TN

International Classification:

C07C 51/347
B01J 27/198

US Classification:

562599, 502209

Abstract:

The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus modified with alkali metal. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the vapor-phase condensation of formaldehyde with acetic acid to generate acrylic acid, particularly using an industrially relevant aqueous liquid feed.

US Patent:

20130237724, Sep 12, 2013

Filed:

Mar 14, 2013

Appl. No.:

13/826180

Inventors:

David William Norman - Kingsport TN, US
Melissa Dawn Page - Gate City VA, US

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B01J 27/198
C07C 51/377

US Classification:

562599

Abstract:

The invention relates to a catalyst composition comprising a mixed oxide of vanadium, titanium, and phosphorus. The titanium component is derived from a water-soluble, redox-active organo-titanium compound. The catalyst composition is highly effective at facilitating the vapor-phase condensation of formaldehyde with acetic acid to generate acrylic acid, particularly using an industrially relevant aqueous liquid feed. Additionally, the catalyst composition is catalytically active towards the formation of acrylic acid from methylene diacetate and methacrylic acid from methylene dipropionate; both reactions are carried out with high space time yields.

US Patent:

20130253230, Sep 26, 2013

Filed:

Mar 23, 2012

Appl. No.:

13/428333

Inventors:

David William Norman - Kingsport TN, US
Jonathan Michael Penney - Gray TN, US
Peter Borden Mackenzie - Kingsport TN, US

Assignee:

EASTMAN CHEMICAL COMPANY - Kingsport TN

International Classification:

C07C 29/136

US Classification:

568861

Abstract:

A process for making ethylene glycol by feeding reactants including 1,2-dioxygenated organic compounds, an organometallic homogeneous catalyst, and hydrogen to a hydrogenation reactor, reacting at least a portion of the reactants with hydrogen in the presence of the organometallic homogeneous catalyst to produce a reaction product mixture containing ethylene glycol, and passivating the catalyst by contacting the catalyst with a carbon monoxide to thereby suppress the formation of by-product diols other thatn the ethylene glycol primary product, and suppress the formation of by-product tetrols and by-product glycolaldehyde acetals; and separating at least a portion of the ethylene glycol from the reaction product mixture.

US Patent:

20130324766, Dec 5, 2013

Filed:

May 31, 2012

Appl. No.:

13/484979

Inventors:

David William Norman - Kingsport TN, US
Joost Nicolaas Hendrik Reek - Amsterdom, NL
Tatiana Renee Marie-Louise Besset - Amsterdam, NL

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

B01J 31/24
C07C 45/49

US Classification:

568455, 502164

Abstract:

Modification of a unique supramolecular assembly of a pyridylphosphine ligand and a metal centered porphyrin complex is shown to give unprecedented selectivities to branched aldehydes via rhodium catalyzed hydroformylation of propylene and 1-octene. Use of magnesium in the porphyrin center provides the highest reported concentrations of iso-butyraldehyde and 2-methyl-octanal.

US Patent:

20130324767, Dec 5, 2013

Filed:

May 31, 2012

Appl. No.:

13/485033

Inventors:

David William Norman - Kingsport TN, US
Joost Nicolaas Hendrik Reek - Amsterdam, NL
Tatiana Renee Marie-Louise Besset - Amsterdam, NL

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C07C 45/49

US Classification:

568455

Abstract:

Use of a unique supramolecular assembly of a pyridylphosphine ligand and a metal centered porphyrin complex is shown to give unprecedented selectivities to branched aldehydes via rhodium catalyzed hydroformylation of unsubstituted linear alpha-olefins such as propylene and 1-octene. Increasing the syngas pressure is shown to have a beneficial effect on branched aldehyde selectivity as is increasing the ratio of carbon monoxide to hydrogen used in the hydroformylation reaction.

US Patent:

20220235149, Jul 28, 2022

Filed:

May 4, 2021

Appl. No.:

17/302463

Inventors:

- Kingsport TN, US
Christopher Harlan Burk - Gray TN, US
Peter Borden Mackenzie - Vancouver, CA
Jennifer A. Fish - Mount Joy PA, US
Eduardo Gallas Cervo - Kingsport TN, US
Elaine Beatrice Mackenzie - Vancouver, CA
Robert Joseph Maleski - Kingsport TN, US
Wesley Wayne McConnell - Kingsport TN, US
David William Norman - Kingsport TN, US
Tabatha Stearns - Kingsport TN, US
Bin Wang - Kingsport TN, US

Assignee:

Eastman Chemical Company - Kingsport TN

International Classification:

C08B 3/16
B32B 27/24
B32B 27/08
B32B 27/36
B32B 7/12
B32B 27/28
C08L 1/14
B32B 23/08
B32B 27/32
B32B 27/18
G02B 5/30
B32B 27/22
B32B 27/06
G02F 1/13363
H01L 51/52

Abstract:

Regioselectively substituted cellulose esters having a plurality of pivaloyl substituents and a plurality of aryl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in films, such as +A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.