Eastman-Kodak Company

Other

Eastman Chemical Company

Michael Bellas

Yeong-Jen Kuo

Gether Irick, Jr

Charles Michael Buchanan

Charles Edwan Sumner, Jr

Alan Kent Wilson

Kevin J Edgar

Bruce L Gustafson

Phillip Montgomery Hudnall

Dewey W Fuller, Jr

Patricia N Mercer

Ernest W Arnold

Eric Jackson Fugate

J Adrian Hawkins

Leslie S LaForce

Fred H Rash

Ted C Germroth

Provided is a facile three step process for preparing 2-phenylterephthalic acid starting with p-xylene, followed by alkylation, dehydrogenation, and oxidation of the methyl groups corresponding to the origional p-xylene. The product, 2-phenylterephthalic acid, is useful as an intermediate in the synthesis of polyesters comprised of residues of 2-phenylterephthalic acid.

Process for preparing phenylterephthalic acid

Disclosed are processes for the preparation of cyclohexanedicarboxylic acids by the non-catalytic hydrolysis or acidolysis of dialkyl cyclohexanedicarboxylate esters. The processes provide a means for converting dialkyl cyclohexanedicarboxylate esters to cyclohexanedicarboxylic acids without the co-production of solid by-products which present disposal problems.

Process for the preparation of cyclohexanedicarboxylic acids

Disclosed are processes for the preparation of alkyl (alkoxycarbonylcyclohexyl)cyclohexenecarboxylates by the dimerization of alkyl 3-cyclohexenecarboxylates and the dehydrogenation of the alkyl (alkoxycarbonylcyclohexyl) cyclohexenecarboxylates to dialkyl biphenyldicarboxylates. The processes are especially useful for the preparation of dialkyl 4,4'-biphenyldicarboxylates which are intermediates in the preparation of high performance polyesters.

Preparation of alkyl (alkoxycarbonylcyclohexyl) cyclohexenecarboxylates

Disclosed is a process for removing chlorine-containing impurities from quinone compounds such as p-bezonquinone. The process involves extracting a quinone compound containing 1000 ppm or more chlorine with heptane, cyclohexane or a mixture thereof and separating the quinone compound from the extraction mixture. The process provides a means for obtaining quinone compounds containing 50 ppm or less chlorine.

Purification of quinones

Disclosed is a process for the preparation of quinhydrones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.

Process for the preparation of quinhydrones

Process for reducing the degree of substitution of cellulose esters employing Lewis acids as solvolysis promoters is disclosed. Novel low degree of substitution cellulose esters produced by the invention process are also described.

Cellulose ester compositions and process for the preparation thereof

Disclosed is a process for the preparation of quinones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalytic amount of ceric trihydroxyhydroperoxide.

Preparation of quinones by the ceric-catalyzed oxidation of aromatic

Disclosed is a process for the preparation of quinones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalytic amount of certain cerium carboxylate salts.

Preparation of quinones

Disclosed is a process for the preparation of quinones by the catalytic oxidation of aromatic diols with a peroxide in the presence of a catalyst system comprising a cerium carboxylate and a cupric carboxylate.

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Kingsport, TN, United States of America

Michael Bellas