Eastman Chemical Company

David William Norman

Jonathan Michael Penney

Andrew James Vetter

Peter Borden Mackenzie

Gerald Charles Tustin

Bin Wang

Matthew Allen Boone

Robert Joseph Maleski

Christopher Harlan Burk

Elaine Beatrice Mackenzie

Wesley Wayne McConnell

Eduardo Gallas Cervo

Tabatha Stearns

Jennifer A Fish

Melissa Page Steffey

Venkata Bharat Ram Boppana

Greg Alan King

Liu Deng

Joost Nicolaas Hendrik Reek

Venkata Bharat Boppana

Melissa Dawn Page

Tatiana Renee Marie-Louise Besset

Damon Ray Billodeaux

Theresa Sims Barnette

Bharat Venkata Boppana

Michael James Nash

Wesley Wayne Mcconnell

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.

Regioselectively substituted cellulose esters and films made therefrom

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.

Process for preparing modified V&#x2014;Ti&#x2014;P catalysts for synthesis of 2,3-unsaturated carboxylic acids

A process is described that uses a silver catalyst to convert methanol into formaldehyde in the presence of less than a stoichiometric amount of oxygen. The resulting formaldehyde is reacted without isolation with propionaldehyde over a commercially available anatase titania catalyst that is shown to be catalytically active towards the formation of methacrolein from formaldehyde and propionaldehyde with conversions and selectivities close to 90%. This titania catalyst is readily available, non-toxic, and can be used with formaldehyde and a variety of other aldehyde compounds to make &#x3b1;,&#x3b2;-unsaturated aldehyde compounds. This process benefits from low raw material costs and is economically advantaged due to the elimination of catalyst separation. This process shows promising stability and selectivity during lifetime studies, particularly when performed in the presence of a hydrogen carrier gas.

Efficient synthesis of methacroelin and other alpha, beta&#x2014;unsaturated aldehydes from methanol and an aldehyde

A commercially available anatase titania catalyst is shown to be catalytically active towards the formation of methacrolein from formaldehyde and propionaldehyde with conversions and selectivities close to 90%. This titania catalyst is readily available, non-toxic, and can be used with formaldehyde and a variety of other aldehyde compounds to make &#x3b1;,&#x3b2;-unsaturated aldehyde compounds. This process benefits from low raw material costs and is economically advantaged due to the elimination of catalyst separation. An additional advantage of this method involves the ability of the catalyst to be fully regenerated after a calcination step at 450&#xb0; C. in air. This process shows promising stability and selectivity during lifetime studies, particularly when performed in the presence of a hydrogen carrier gas.

Efficient synthesis of methacroelin and other alpha, beta-unsaturated aldehydes over a regenerable anatase titania catalyst

Disclosed is a process for the reductive carbonylation of a low molecular weight alcohol to produce the homologous aldehyde and/or alcohol. The process includes conducting the reaction to produce the aldehyde in the presence of a single component catalyst complex composed of cobalt, an onium cation and iodide in a ratio of 1:2:4 without additional promoters. A ruthenium co-catalyst is used in the production of the homologous alcohol. The reductive carbonylation reaction does not require an additional iodide promoter and produces a crude reductive carbonylation product substantially free of methyl iodide.

Methyl-iodide-free carbonylation of an alcohol to its homologous aldehyde and/or alcohol

Disclosed is a process for the reductive carbonylation of a low molecular weight alcohol to produce the homologous aldehyde and/or alcohol. The process includes conducting the reaction to produce the aldehyde in the presence of a catalyst complex composed of cobalt, an onium cation and iodide in a ratio of 1:2:4 with a phosphine ligand. A ruthenium co-catalyst is used in the production of the homologous alcohol. The reductive carbonylation reaction does not require an additional iodide promoter and produces a crude reductive carbonylation product substantially free of methyl iodide.

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.

Process for preparing V&#x2014;Ti&#x2014;P catalysts for synthesis of 2,3-unsaturated carboxylic acids

Process for preparing V-Ti-P catalysts for synthesis of 2,3-unsaturated carboxylic acids

Processes are provided for contacting at least one Calcohol equivalent having n carbon atoms and at least one Calcohol equivalent having (n+1) carbon atoms with a Guerbet catalyst to form a product composition comprising a product compound having the structure: 

Conversion of alcohols to longer chain aldehydes or alcohols

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Kingsport, TN, United States of America

David William Norman