公开(公告)号：US20160060202A1

公开(公告)日：2016-03-03

申请号：US14934208

申请日：2015-11-06

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： DAVID MILTON LANGE ,  ASHFAQ SHAHANAWAZ SHAIKH ,  PATRICE L. RIESENBERG ,  MESFIN EJERSSA JANKA

IPC: C07C51/265

CPC classification number: C07C51/265 ,  C07C63/26

Abstract: Processes for producing terephthalic acid are disclosed, the processes including a step of combining in a reaction medium para-xylene, a solvent comprising water and a saturated organic acid having from 2-4 carbon atoms, and an oxygen-containing gas, at a temperature for example from about 145° C. to about 175° C., in the presence of a catalyst composition comprising cobalt, manganese, zirconium, and bromine, wherein the zirconium is present in the reaction medium in an amount, for example, from 1 ppm to 50 ppm with respect to the weight of the liquid in the reaction medium.

公开(公告)号：US20180201596A1

公开(公告)日：2018-07-19

申请号：US15921956

申请日：2018-03-15

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： MESFIN EJERSSA JANKA ,  KENNY RANDOLPH PARKER ,  ASHFAQ SHAHANAWAZ SHAIKH ,  LEE REYNOLDS PARTIN

IPC: C07D307/68 ,  C07D307/48 ,  C07B41/08 ,  C07B63/00

Abstract: Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.

公开(公告)号：US20160221980A1

公开(公告)日：2016-08-04

申请号：US15096584

申请日：2016-04-12

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： KENNY RANDOLPH PARKER ,  MESFIN EJERSSA JANKA ,  ASHFAQ SHAHANAWAZ SHAIKH ,  LEE REYNOLDS PARTIN

IPC: C07D307/68

CPC classification number: B01J27/32 ,  B01D11/04 ,  B01D11/0446 ,  B01D17/00 ,  B01J10/002 ,  B01J23/8892 ,  B01J27/128 ,  B01J35/12 ,  B01J38/12 ,  C07D307/68 ,  Y02P20/584

Abstract: Disclosed is an oxidation process to produce a crude carboxylic acid product carboxylic acid product. The process comprises oxidizing a feed stream comprising at least one oxidizable compound to generate a crude carboxylic acid slurry comprising furan-2,5-dicarboxylic acid (FDCA) and compositions thereof. Also disclosed is a process to produce a dry purified carboxylic acid product by utilizing various purification methods on the crude carboxylic acid.

公开(公告)号：US20180290994A1

公开(公告)日：2018-10-11

申请号：US16004549

申请日：2018-06-11

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： MESFIN EJERSSA JANKA ,  KENNY RANDOLPH PARKER ,  PAULA MOODY ,  ASHFAQ SHAHANAWAZ SHAIKH ,  LEE REYNOLDS PARTIN ,  BRADFORD RUSSELL BOWERS ,  MICHAEL CHARLES MORROW

IPC: C07D307/68 ,  C07D307/60

Abstract: Disclosed is a process to produce a dry purified carboxylic acid product comprising furan-2,5-dicarboxylic acid (FDCA). The process comprises oxidizing at least one oxidizable compound selected from the following group: 5-(hydroxymethyl)furfural (5-HMF), 5-HMF esters (5-R(CO)OCH2-furfural where R=alkyl, cycloalkyl and aryl), 5-HMF ethers (5-R′OCH2-furfural, where R′=alkyl, cycloalkyl and aryl), 5-alkyl furfurals (5-R″-furfural, where R″=alkyl, cycloalkyl and aryl), mixed feed-stocks of 5-HMF and 5-HMF esters and mixed feed-stocks of 5-HMF and 5-HMF ethers and mixed feed-stocks of 5-HMF and 5-alkyl furfurals to generate a crude carboxylic acid slurry comprising FDCA, removing impurities from a crude carboxylic acid slurry in a liquid displacement zone to form a low impurity slurry stream.

公开(公告)号：US20160311790A1

公开(公告)日：2016-10-27

申请号：US15200467

申请日：2016-07-01

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： MESFIN EJERSSA JANKA ,  KENNY RANDOLPH PARKER ,  ASHFAQ SHAHANAWAZ SHAIKH ,  LEE PARTIN REYNOLDS ,  CHARLES EDWIN SUMNER ,  SHANE KIPLEY KIRK

IPC: C07D307/68

CPC classification number: C07D307/68 ,  B01D11/0446

Abstract: A process for purifying a crude furan 2,5-dicarboxylic acid composition (cFDCA) by hydrogenation of a FDCA composition dissolved in a hydrogenation solvent such as water, and hydrogenating under mild conditions, such as at a temperature within a range of 130° C. to 225° C. by contacting the solvated FDCA composition with hydrogen in the presence of a hydrogenation catalyst under a hydrogen partial pressure within a range of 10 psi to 900 psi. A product FDCA composition is produced having a low amount of tetrahydrofuran dicarboxylic acid, a low b*, and a low amount of 5-formyl furan-2-carboxylic acid (FFCA).

Abstract translation: 通过氢化溶解在氢化溶剂如水中的FDCA组合物，并在温和条件下（例如在130℃的温度范围内）氢化来纯化粗呋喃2,5-二羧酸组合物（cFDCA）的方法 通过在10psi至900psi的氢分压下，在氢化催化剂存在下使溶剂化的FDCA组合物与氢气接触。 制备具有少量四氢呋喃二羧酸，低b *和少量5-甲酰基呋喃-2-羧酸（FFCA）的产品FDCA组合物。