Elevance Renewable Sciences, Inc.

Bp Corporation North America Inc.

Amoco Corporation

Bp Amoco Corporation

Yenamandra Viswanath

Steven Alan Cohen

Edward E Paschke

Robert Snyder

Melvin L Luetkens, Jr

Wayne P Schammel

Juergen K Holzhauer

Bruce I Rosen

Thomas E Snead

Chander Balakrishnan

Thomas G Smith

Robin Weitkamp

Demond L Gildon

Alpeshkumar K Patel

John M Weis

Brian Pease

Bradon J Dreyer

Efimia Metsi-Guckel

John A Macek

Victor A Adamian

Igor V Zakharov

Lawrence L Lang

David J Schneider

Larry D Lillwitz

Brian Albert

John S Bramlet

Mary Bjorklund

Yongyou Hu

Stefanos L Sakellarides

Jason Bronkema

Efima Metsi-Guckel

Purvi Kapasi

Colin Huie

High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions include a dibasic acid as a crystalline solid and further include a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.

High-purity dibasic acid compositions and methods of making the same

High-purity dibasic acid compositions are generally disclosed. In some embodiments, the dibasic acid compositions are solutions or suspensions. In some other embodiments, the compositions are solid-state compositions. In some such embodiments, the solid-state compositions comprise a dibasic acid as a crystalline solid and further comprise a low quantity of certain impurities, such as monobasic acids, various esters, and the like. Methods and systems for making such high-purity dibasic acid compositions are also disclosed.

Methods of makng high-purity dibasic acid compositions

High purity dibasic acid compositions and methods of making the same

Systems and methods are disclosed for refining natural oil feedstocks. In some embodiments, the methods comprise transesterifying glycerides in a natural oil feedstock to provide a transesterified product comprising monounsaturated fatty acid esters and polyunsaturated fatty acid esters. In some embodiments, the methods comprise separating the polyunsaturated fatty acid esters from the monounsaturated fatty acid esters (or vice versa), to provide a separated monounsaturated fatty acid ester composition having a ratio of at least 10 parts by weight of monounsaturated fatty acid esters for every 1 part by weight of polyunsaturated fatty acid esters.

Systems and methods of refining natural oil feedstocks and derivatives thereof

Methods are provided for refining natural oil feedstocks. The methods comprise reacting the feedstock with a low-molecular-weight olefin or mid-weight olefin in the presence of a metathesis catalyst under conditions sufficient to form a metathesized product comprising olefins and esters. In certain embodiments, the methods further comprise separating the olefins from the esters in the metathesized product. In certain embodiments, the methods further comprise transesterifying the esters in the presence of an alcohol to form a transesterified product.

Methods of refining and producing fuel and specialty chemicals from natural oil feedstocks

The present invention relates to the liquid phase oxidation of aromatic hydrocarbons in the presence of at least one heavy metal oxidation catalyst and bromine, which is activated by at least one of anthracene or another polycyclic aromatic compound to produce aromatic carboxylic acids.

Anthracene and other polycyclic aromatics as activators in the oxidation of aromatic hydrocarbons

The synthesis of dimethyl-1,5-naphthalenedicarboxylate and polymers and articles formed therefrom is disclosed, as well as applications for dimethyl-1,5-naphthalenedicarboxylate, its corresponding acid 1,5-NDA, and various synthesis intermediates.

Synthesis and use of dimethyl 1,5-naphthalenedicarboxlyates and intermediates therefrom

A method for recovering crystalline 2,6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components, LM, having melting points of 70.degree. F. and below, and high melting components (HM), including 2,6-dimethylnaphthalene, having melting points above 70.degree. F, such that: ##EQU1## where HM is the total weight percent of high melting components, including 2,6-dimethylnaphthalene, in the mixture, and LM is the total weight percent of low melting components in the mixture, and where T is the temperature of the crystallization in degrees Fahrenheit, and where A is at least 1.0.

Crystallization of 2,6-dimethylnaphthalene

A method for recovering crystalline 2,6-dimethylnaphthalene comprising crystallizing in a scraped-wall crystallizer apparatus at crystallization temperature T, a mixture of low melting components, LM, having melting points of 70.degree. F. and below, and high melting components (HM), including 2,6-dimethylnaphthalene, having melting points above 70.degree. F., such that: ##EQU1## where HM is the total weight percent of high melting components, including 2,6-dimethylnaphthalene, in the mixture, and LM is the total weight percent of low melting components in the mixture, and where T is the temperature of the crystallization in degrees Fahrenheit, and where A is at least 1.0.

Crystallizaiton of 2,6-dimethylnaphthalene

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Naperville, IL, United States of America

Yenamandra Viswanath