METHOD OF PREPARING AROMATIC CARBOXYLIC ACIDS AND METHOD OF PREPARING PURIFIED NAPHTHALENEDICARBOXYLIC ACID Russian patent published in 1999 - IPC

Abstract RU 2128641 C1

FIELD: chemical industry. SUBSTANCE: method comprises oxidizing liquid phase of original aromatic compound comprising at least one alkyl or acyl group capable of being oxidized with oxygen-containing gas in solvent containing low molecular weight carboxylic acid in the presence of oxidation catalyst comprising heavy metals at 121-131 to form reaction mixture of oxidation products, said mixture containing the resulting aromatic carboxylic acid. Reaction mixture is heated at temperature form at least 228-368 C to give second reaction mixture of oxidation products, aromatic carboxylic acid being then isolated from said mixture. EFFECT: higher purity of the desired product. 10 cl, 1 dwg, 14 ex, 13 tbl

Similar patents RU2128641C1

Title Year Author Number
METHOD (Versions) AND PLANT FOR PRODUCTION OF AROMATIC CARBOXYLIC ACIDS 1995
  • Abrams Kennet Dzh.
RU2171798C2
METHOD OF PREPARING NAPHTHALENEDICARBOXYLIC ACID DIALKYL ESTER 1993
  • Bekhrens Pol(Us)
  • Khol'Zkhauehr Jurgen
  • Khassmann Gregori
  • Sikkenga Dehvid
RU2123996C1
METHOD OF PRODUCING DIALKYL ETHER OF NAPHTHALENE DICARBOXYLIC ACID (VERSIONS) 2005
  • Makmakhon Rouzmehri F.
  • Mejsek Dzhon A.
  • Khassmann Gregori P.
  • Pehnzer Majkl Dzh.
  • Ehjfert Rajmond Dzh.
  • Jung Dehvid A.
  • Mossman Allen B.
  • Klekler Dzh. Diven
RU2397158C2
METHOD OF SYNTHESIS OF NAPHTHALENE-2,6-DICARBOXYLIC ACID 1992
  • Manzurov V.D.
  • Morozov V.M.
  • Kovalev L.S.
RU2030386C1
AROMATIC CARBOXYLIC ACID PRODUCTION PROCESS 2001
  • Sikkenga Dehvid D.
  • Pendia Ehlpen K.
  • Zaenzhger En S.
  • Ehbrams Kennet Dzh.
  • Bartos Tomas M.
RU2259346C2
METHOD OF PRODUCING OF CRUDE AROMATIC POLYCARBOXYLIC ACID 1992
  • Dzhon Charl'Z Dzhi
  • Dzhehffi Ira Rozenfel'D
  • Tomas Majkl Bartos
RU2114098C1
METHOD FOR OXIDISING OF AROMATIC HYDROCARBONS AND CATALYTIC SYSTEM THEREOF 2004
  • Shammel Vehjn P.
  • Ehdehmian Viktor A.
  • Visvanatkh Enamandra
  • Zakharov Igor' V.
RU2362762C2
METHOD OF DIMETHYLTETRALINE SYNTHESIS 1990
  • Dehvid Li Sikkenga[Us]
  • Dzhojs Dejl Lehmb[Us]
  • Jan Klejton Zejndzher[Us]
  • Gregori Skott Vill'Jams[Us]
RU2024471C1
METHOD OF RECOVERING ENERGY DURING PRODUCTION OF AROMATIC CARBOXYLIC ACIDS 2006
  • Bartos Tomas M.
RU2435754C2
METHOD OF PREPARING DIMETHYL ETHER OF 2,6-NAPHTHALENEDICARBOXYLIC ACID 0
  • Klaus Tevalt
  • Gustav Renkkkhoff
  • Paul Yanssen
SU591135A3

RU 2 128 641 C1

Authors

Dehvid L.Sikkenga

Dzhordzh E.Kul'Mann

Paul K.Berens

Martin A.Zejtlin

Stefen V.Khuver

Dates

1999-04-10Published

1993-06-16Filed