Eastman Chemical Company

Eastman-kodak Company

Steven Leroy Cook

Phillip Wayne Turner

Brent Alan Tennant

Damon Bryan Shackelford

Jeff Scott Howell

Noah Glenn McMillan

Benjamin Fredrick Barton

Gether Irick, Jr

Joseph Robert Zoeller

Charles E Outlaw

Vickie Haygood Osborne

Crispen S Moorehouse

Gordon C Newland

Ruairi Seosamh O'Meadhra

Dale E Van Sickle

Joseph Alexander Deloach

John Dayton Baker, Jr

Robert M Schisla, Jr

Kevin Alan Williams

Dewey W Fuller, Jr

Martin James Stimpson

Pinguan Zheng

Patricia N Mercer

Stanley John Okrasinski

George G Mayfield

Anthony Gerard Barrett

Clyde Neal Clubb

Mark Stephen Holt

Jeffrey J Siirola

Christopher Fletcher Tomlin

Michael Dean Funderburg

Regina Michelle Moncier

H Ford Lowery

Vicky K Pinto

Robert T Hembre

Johnny Brassfield

Elden Mills Bailey, Ii

Jesus Gabriel Moralez

Benjamin Frederick Barton

Philip Wayne Turner

Larry E Brammer

Darnon Bryan Shackelford

Jeff Soctt Howell

Body pillow

The invention is directed to a process for preparing a terephthalic acid di-ester. The process includes contacting terephthalic acid with a C-Calcohol in the presence of an organo-titanium catalyst and an alcohol-amine promoter under conditions effective to form a corresponding terephthalic acid di-ester. The promoter can improve the reaction time by as much as 50%.

Production of terephthalic acid di-esters using alcohol-amine promoters

Disclosed is a process for the preparation of 1,3-cyclohexanedimethanol from isophthalic acid. Isophthalic acid is esterified with (3-methylcyclohexyl)methanol and the isophthalate ester hydrogenated to 1,3-cyclohexanedimethanol in a 2-stage process. The (3-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. Also disclosed is a method for purifying and recovering the 1,3-cyclohexanedimethanol product.

Process for the preparation of 1,3-cyclohexanedimethanol from isophthalic acid

Disclosed is an integrated process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. Also disclosed is a method for purifying and recovering the 1,4-cyclohexanedimethanol product.

Integrated process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid

Disclosed is a process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. After removal of the (4-methylcyclohexyl)methanol from the crude hydrogenation product, the 1,4-cyclohexanedimethanol product can be recovered and purified by a phase separation and distillation.

Process for the preparation of 1,4-cyclohexanedimethanol

Disclosed is a process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid. Terephthalic acid is esterified with (4-methylcyclohexyl)methanol and the terephthalate ester hydrogenated to 1,4-cyclohexanedimethanol in a 2-stage process. The (4-methylcyclohexyl)methanol that is formed during the hydrogenation step is recycled to the esterification reaction. Also disclosed is a method for purifying and recovering the 1,4-cyclohexanedimethanol product.

Process for the preparation of 1,4-cyclohexanedimethanol from terephthalic acid

Disclosed is a process for the preparation of a terephthalic acid di-ester by the esterification of terephthalic acid with an alcohol at elevated and normal temperature and pressure while the water of the reaction is removed from the reaction mixture via an inert gas or a column.

Production of terephthalic acid di-esters

Disclosed is a process for the preparation of di-n-butyl terephthalate by the esterification of terephthalic acid with n-butanol in the presence of a strong acid while employing a fractionating column.

Conversion of terephthalic acid to Di-n-butyl terephthalate

A method for maximizing the yield of 2,2,4-trimethyl-1,3-pentanediol di-2-ethylhexanoate (TMPD di-2-ethylhexanoate) from the reaction of 2,2,4-trimethyl-1,3-pentanediol (TMPD Glycol) and 2-ethylhexanoic acid through the intermediate compound 2,2,4-Trimethyl-1,3-pentanediol-2-ethylhexanoate (TMPD mono-2-ethylhexanoate) is disclosed. The method involves maintaining a water level in the reactor of at least 0.10 weight %, and preferable above 0.20 weight %, thereby reducing formation of 2,2,4-trimethylpent-3-enyl-2-ethylhexanoate, an undesirable by-product.

Method for producing 2,2,4-trimethyl-1,3-pentanediol di-2-ethylhexanoate

Mixtures of terephthalate diesters having lowered freezing points and methods of making the terephthalic acid diesters. The method includes contacting a first alcohol, a second different alcohol and dimethyl terephthalate in the presence of a catalyst to thereby form the terephthalate diesters.

Low-melting mixtures of di-n-butyl and diisobutyl terephthalate

Disclosed is a process for the preparation of di-(2-ethylhexyl) terephthalate by the esterification of terephthalic acid with 2-ethylhexanol at elevated temperature and pressure while the water of reaction is removed from the reaction mixture.

Production of di-(2-ethylhexyl) terephthalate

Disclosed is a continuous process for the production of tertiary butyl esters by the reaction of a ketene and tertiary butyl alcohol containing a finite concentration of water. The process may be carried out in an absorber reactor with continuous recovery and purification of products by distillation. This process provides high-purity tertiary butyl acetate without the production of unwanted by-products found in many strong acid catalyzed processes.

Continuous process for tertiary butyl esters

Disclosed is a continuous process for the production of 3,4-diacetoxy-1-butene (DAcB) by the reaction of 3,4-epoxy-1-butene (EpB) with acetic anhydride (Ac.sub.2 O) in the presence of potassium acetate (KOAc) wherein the KOAc is formed in situ by contacting EpB, acetic anhydride and a potassium salt selected from potassium carbonate, potassium bicarbonate, potassium hydroxide or a mixture of any two or more thereof at elevated temperatures.

Continuous process for the production of diacetoxybutene

Disclosed is a process for the purification of carboxyl streams such as product streams comprising one or more carboxyl compounds selected from carboxylic acids, carboxylic anhydrides and alkylidene dicarboxylates. The process provides a means for the reduction of the iodine content of carboxyl compound product streams which are contaminated with one or more iodine compounds.

Purification of carboxyl streams

Disclosed is a process for the recovery of a cyclohexanedicarboxylic acid from an aqueous solution of the cyclohexanedicarboxylic acid and sodium sulfate by contacting the solution with vinylpyridine/divinylbenzene ion exchange resins.

Process for the recovery of cyclohexanedicarboxylic acids

Growing community of inventors

Kingsport, TN, United States of America

Steven Leroy Cook