RO91879B - Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic - Google Patents

Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic

Info

Publication number
RO91879B
RO91879B RO117779A RO11777985A RO91879B RO 91879 B RO91879 B RO 91879B RO 117779 A RO117779 A RO 117779A RO 11777985 A RO11777985 A RO 11777985A RO 91879 B RO91879 B RO 91879B
Authority
RO
Romania
Prior art keywords
terephtalic acid
esther
preparing
terephtalic
methanol
Prior art date
Application number
RO117779A
Other languages
English (en)
Other versions
RO91879A (ro
Inventor
Modic Rudolf
Porschen Jorg
Schoengen Anton
Wirges Ralf
Original Assignee
Dynamit Nobel Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dynamit Nobel Aktiengesellschaft filed Critical Dynamit Nobel Aktiengesellschaft
Publication of RO91879A publication Critical patent/RO91879A/ro
Publication of RO91879B publication Critical patent/RO91879B/ro

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/26—1,4 - Benzenedicarboxylic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Inventia se refera la un procedeu pentru prepararea de acid tereftelic prin intermediul dimetilesterului asidului tereftalic si consta în aceea ca amestecul apa-metanol este de supus rectificarii împreuna cu celelalte fractiuni cu continut de metanol, la o presiune de 2 pâna la 20 at, vaporii cu continut de metanol obtinuti se supune unei compresii la un raport de compresie de 1,2:1 pâna la 15:1 si se realimenteaza la esterificare cu o temperatura de 150 pâna la 1300 degree C.
RO117779A 1984-03-03 1985-02-27 Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic RO91879B (ro)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3407912A DE3407912C1 (de) 1984-03-03 1984-03-03 Verfahren zur Herstellung von Terephthalsaeure ueber Terephthalsaeuredimethylester aus p-Xylol und Methanol

Publications (2)

Publication Number Publication Date
RO91879A RO91879A (ro) 1987-06-30
RO91879B true RO91879B (ro) 1987-07-03

Family

ID=6229529

Family Applications (1)

Application Number Title Priority Date Filing Date
RO117779A RO91879B (ro) 1984-03-03 1985-02-27 Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic

Country Status (20)

Country Link
US (1) US4642377A (ro)
EP (1) EP0157122B1 (ro)
JP (1) JPH0688937B2 (ro)
KR (1) KR920003120B1 (ro)
BG (1) BG45697A3 (ro)
BR (1) BR8500935A (ro)
CS (1) CS251095B2 (ro)
DD (1) DD232912A5 (ro)
DE (2) DE3407912C1 (ro)
EG (1) EG17052A (ro)
ES (1) ES8602590A1 (ro)
IN (1) IN163350B (ro)
MX (1) MX162239A (ro)
PL (1) PL144915B1 (ro)
PT (1) PT80041B (ro)
RO (1) RO91879B (ro)
SU (1) SU1581218A3 (ro)
TR (1) TR22497A (ro)
YU (1) YU44722B (ro)
ZA (1) ZA851579B (ro)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4026732A1 (de) * 1990-08-24 1992-02-27 Huels Chemische Werke Ag Verfahren zur reinigung eines oxidationsabgases mit energierueckgewinnung
US6472557B1 (en) 1999-02-10 2002-10-29 Eastman Chemical Company Process for recycling polyesters
CN110078284B (zh) * 2019-04-25 2021-08-24 杭州多向流化学科技有限公司 用于制备对苯二甲酸的富水溶剂分级利用减排系统

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2653165A (en) * 1950-09-27 1953-09-22 California Research Corp Oxidation process
DE1071688B (de) * 1958-06-14 1959-12-24 Basf Ag Verfahren zur Verbesserung der Oxydationsgeschwindigkeit der bei Luftoxydation von xylol oder von gemischen aus xylol und p-toluylsaeuremethylestern anfallenden gemische
DE2916197C2 (de) * 1979-04-21 1982-01-28 Dynamit Nobel Ag, 5210 Troisdorf Verfahren zur Herstellung von Terephthalsäure aus Dimethyltherephthalat als Zwischenprodukt

Also Published As

Publication number Publication date
ZA851579B (en) 1985-10-30
BG45697A3 (en) 1989-07-14
SU1581218A3 (ru) 1990-07-23
EP0157122A1 (de) 1985-10-09
BR8500935A (pt) 1985-10-22
PL252195A1 (en) 1985-09-24
PL144915B1 (en) 1988-07-30
CS251095B2 (en) 1987-06-11
KR850007056A (ko) 1985-10-30
IN163350B (ro) 1988-09-10
ES540832A0 (es) 1985-12-01
DE3407912C1 (de) 1985-05-09
PT80041A (de) 1985-04-01
EP0157122B1 (de) 1987-01-14
YU31485A (en) 1987-10-31
US4642377A (en) 1987-02-10
YU44722B (en) 1990-12-31
KR920003120B1 (ko) 1992-04-20
MX162239A (es) 1991-04-12
PT80041B (pt) 1987-06-17
DE3560053D1 (en) 1987-02-19
RO91879A (ro) 1987-06-30
JPH0688937B2 (ja) 1994-11-09
DD232912A5 (de) 1986-02-12
EG17052A (en) 1994-07-30
ES8602590A1 (es) 1985-12-01
JPS60202842A (ja) 1985-10-14
TR22497A (tr) 1987-09-11

Similar Documents

Publication Publication Date Title
ES460536A1 (es) Metodo de fabricar hormigon que tiene alta resistencia a la corrosion.
JPS57162785A (en) Stable and uniform fuel composition for engine and its preparation
RO91101B (ro) Procedeu pentru prepararea de dimetilester de acid tereftalic din p-xilen si metanol
RO91879B (ro) Procedeu pentru prepararea de acid tereftalic prin intermediul dimetilesterului acidului tereftalic
DE3463492D1 (en) Process for the preparation of olefines having 2 to 4 carbon atoms from methanol and/or dimethyl ether
JPS56131546A (en) Preparation of alkanoyloxyacetic acid
JPS52155606A (en) Fuel composition
ES464891A1 (es) Perfeccionamientos en la obtencion de combustible para moto-res diesel a base de metanol
ES8701218A1 (es) Un procedimiento para la preparacion de una composicion acuosa en suspension de un combustible solido como carbon,coque de petroleo o brea.
JPS55100374A (en) Preparation of diisobutenylsuccinic anhydride
JPS54132502A (en) Preparation of esters
FR2300063A1 (fr) Procede de production de l'ether 3-hydroxymethyldiphenylique
CU35516A (en) Procedure to the methanol and superior alcohol production and its obtained mixture
JPS55164140A (en) Production of particle board excellent in water resistance
JPS5589318A (en) Production of resol resin
JPS5527341A (en) Epoxy acrylate resin composition
JPS54161699A (en) Preparation of copolyester
EP0236139A3 (en) Trioxane fuels with increased heat content
KR890000391A (ko) 카르복실산혼합물 및 그 제조방법
JPS55135185A (en) Water-soluble adhesive composition
JPS52128351A (en) Preparation of alpha-elemene and delta-elemene
JPS5362020A (en) Fuel injection tube of diesel engine
JPS543052A (en) Preparation of steroids having 3-enolacyloxy group and 17-acetal group
JPS5697245A (en) Preparation of carboxylic acid
JPS56166254A (en) Phenolic resin composition having improved coating property