Eastman Chemical Company

Elaine Beatrice Mackenzie

David William Norman

Peter Borden Mackenzie

Bin Wang

Matthew Allen Boone

Robert Joseph Maleski

Christopher Harlan Burk

Larry Wayne Blair

Tabatha Stearns

Wesley Wayne McConnell

Eduardo Gallas Cervo

Jennifer A Fish

Scott Donald Barnicki

Robert Thomas Hembre

Shane Kipley Kirk

Sumit Chakraborty

Michael Richard Laningham

Joy Lynn Laningham

Venkateswarlu Bhamidi

Guoxiong Hua

John Derek Woollins

Joseph Robert Zoeller

John Robert Monnier

Steven Thomas Perri

Bhaskar Krishna Arumugam

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 present invention relates to a method for the manufacture of cyclododecasulfur, a cyclic sulfur allotrope wherein the number of sulfur (S) atoms in the allotrope's homocyclic ring is 12. The method includes reacting a metallasulfur derivative with an oxidizing agent in a reaction zone to form a cyclododecasulfur-containing reaction mixture.

Method for the manufacture of cyclododecasulfur

Industrially relevant product selectivities and reaction rates are obtained from rhodium catalyzed hydroformylation of propylene via the use of a novel induction period in which the supramolecular ligand assembly, the rhodium precatalyst and an initial substrate are allowed to form a hydroformylation catalyst that is more selective toward branched aldehydes. Upon heating this incubated mixture and addition of propylene, iso-butyraldehyde is obtained in higher concentrations and rates that are otherwise unattainable.

Catalyst and method having selectivity to isobutyraldehyde via catalyst induction

Disclosed is a process for the preparation of tetrahydro-3-furoic acid by the thermal, non-catalytic oxidation of 3-formyltetrahydrofuran using molecular oxygen.

Preparation of tetrahydro-3-furoic acid

The present invention is a process for the preparation of ascorbic acid using a simulated moving bed (SMB) reactor system to accomplish the simultaneous conversion of KLG or a derivative of KLG to ascorbic acid and the separation of reaction products. The SMB reactor contains a solid or mixture of solids effective for catalyzing the reaction of KLG or its derivative and for separating the reactions products by selective adsorption of at least one product. In a general embodiment, this process involves (1) feeding a solution of KLG or a derivative thereof in a first solvent and a desorbent which is miscible with the first solvent, to a simulated moving bed reactor; (2) reacting the KLG or the KLG derivative to form ascorbic acid; and (3) removing from the simulated moving bed reactor (i) a first liquid stream comprising a solution of ascorbic acid in the desorbent and the first solvent (ii) a second liquid stream comprising the first solvent and the desorbent.

Process for the preparation of ascorbic acid

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Enfield, CT, United States of America

Elaine Beatrice Mackenzie