ES183560A1 - IMPROVEMENTS IN THE MANUFACTURE OF TEREPHTHALIC ACID - Google Patents

IMPROVEMENTS IN THE MANUFACTURE OF TEREPHTHALIC ACID

Info

Publication number
ES183560A1
ES183560A1 ES0183560A ES183560A ES183560A1 ES 183560 A1 ES183560 A1 ES 183560A1 ES 0183560 A ES0183560 A ES 0183560A ES 183560 A ES183560 A ES 183560A ES 183560 A1 ES183560 A1 ES 183560A1
Authority
ES
Spain
Prior art keywords
manufacture
terephthalic acid
liquid
reaction medium
solid
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES0183560A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of ES183560A1 publication Critical patent/ES183560A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

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

Perfeccionamientos en la fabricación de ácido tereftálico, que comprenden el hacer pasar oxígeno, aire u otra mezcla de gases que contenga oxígeno, por el interior de p-xileno líquido, a una temperatura superior a 100º C., conteniendo dicho líquido, como agente catalizador, una pequeña proporción de un compuesto, soluble en aceite, de cobalto u otro material activo análogo; el continuar el paso del gas o mezcla de gases hasta que del medio de reacción se separa una cantidad apreciable de sólido, y de retirar dicho sólido del medio de reacción citado.Improvements in the manufacture of terephthalic acid, which include passing oxygen, air or another mixture of gases that contains oxygen, through the interior of liquid p-xylene, at a temperature higher than 100º C., containing said liquid as a catalyst agent , a small proportion of a compound, soluble in oil, of cobalt or other analogous active material; continuing the passage of the gas or gas mixture until an appreciable amount of solid separates from the reaction medium, and removing said solid from the mentioned reaction medium.

ES0183560A 1947-05-09 1948-05-04 IMPROVEMENTS IN THE MANUFACTURE OF TEREPHTHALIC ACID Expired ES183560A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1258447A GB623836A (en) 1947-05-09 1947-05-09 Manufacture of terephthalic acid

Publications (1)

Publication Number Publication Date
ES183560A1 true ES183560A1 (en) 1948-07-01

Family

ID=10007323

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0183560A Expired ES183560A1 (en) 1947-05-09 1948-05-04 IMPROVEMENTS IN THE MANUFACTURE OF TEREPHTHALIC ACID

Country Status (2)

Country Link
ES (1) ES183560A1 (en)
GB (1) GB623836A (en)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733266A (en) * 1956-01-31 mckinnis
US2899466A (en) * 1959-08-11 Purification of terephthalic acid
US2732399A (en) * 1956-01-24 Process for separating isophthalic acid
US2723994A (en) * 1951-01-15 1955-11-15 Shell Dev Oxidation of xylene and toluic acid mixtures to phthalic acids
US2656377A (en) * 1951-01-16 1953-10-20 California Research Corp Process for the separation of isophthalic and terephthalic diesters
DE949564C (en) * 1951-04-13 1956-09-20 Imhausen & Co G M B H Process for the preparation of terephthalic acid monomethyl ester
DE969994C (en) * 1951-04-14 1958-08-07 Imhausen & Co G M B H Process for the preparation of terephthalic acid esters by the oxidation of p-xylene
DE971420C (en) * 1951-05-05 1959-01-29 Imhausen Werke G M B H Process for the preparation of isophthalic acid monomethyl ester
DE970794C (en) * 1951-06-13 1959-09-10 Imhausen Werke G M B H Process for the production of terephthalic acid esters
DE976866C (en) * 1951-06-23 1964-07-16 Witten Gmbh Chem Werke Process for the production of terephthalic acid esters
DE971421C (en) * 1951-06-27 1959-01-29 Imhausen Werke G M B H Process for the production of phthalic acid monomethyl ester
DE970795C (en) * 1951-07-05 1959-09-10 Imhausen Werke G M B H Process for the production of pure terephthalic acid and isophthalic acid methyl ester
US2821551A (en) * 1951-08-06 1958-01-28 Imhausen Werke G M B H Process for production of aromatic carboxylic acids
US2698865A (en) * 1951-08-06 1955-01-04 Imhausen & Compagnie G M B H Process for production of aromatic polycarboxylic acids
US2764611A (en) * 1951-08-06 1956-09-25 Imhausen Werke G M B H Process for production of aromatic polycarboxylic acids
DE975712C (en) * 1951-08-07 1962-07-05 Witten Gmbh Chem Werke Process for the preparation of aromatic polycarboxylic acids or their esters by oxidation of alkyl aromatics
US2673217A (en) * 1951-09-21 1954-03-23 Eastman Kodak Co Selective oxidation of substituted aromatic compounds using aldehyde-activated catalysts
US2749363A (en) * 1951-11-23 1956-06-05 Shell Dev Purification of aromatic acids
NL82784C (en) * 1952-03-31
US2785199A (en) * 1952-07-01 1957-03-12 Richfield Oil Corp Purification of toluic acids
BE521096A (en) * 1952-07-01 1900-01-01
US2810750A (en) * 1952-07-07 1957-10-22 Imhausen Werke G M B H Process for converting aromatic alcohols to aromatic carboxylic acids
US2727919A (en) * 1952-08-21 1955-12-20 Hercules Powder Co Ltd Process for oxidizing polyalkylaromatic hydrocarbons and derivatives thereof using an acid anhydride catalyst
US2772305A (en) * 1952-08-26 1956-11-27 California Research Corp Oxidation of toluate esters and xylene mixtures
US2742494A (en) * 1952-09-26 1956-04-17 Hercules Powder Co Ltd Mixed esters of phthalic acids and process for production thereof
US2741633A (en) * 1952-11-17 1956-04-10 Union Oil Co Separation of isophthalic and terephthalic acids
US2746990A (en) * 1953-02-02 1956-05-22 Shell Dev Preparation of terephthalic acid
US2788367A (en) * 1953-03-05 1957-04-09 Union Oil Co Xylene oxidation process
DE1055521B (en) * 1953-10-19 1959-04-23 California Research Corp Process for the separation of mixtures of the dimethyl esters of iso- and terephthalic acid
DE1035642B (en) * 1954-10-06 1958-08-07 California Research Corp Process for the preparation of benzene polycarboxylic acids
US2858334A (en) * 1954-11-26 1958-10-28 Mid Century Corp Preparation of phthalic acids
GB801567A (en) * 1954-12-08 1958-09-17 Mid Century Corp High-purity dimethyl terephthalate and process for its preparation
US2879289A (en) * 1956-06-27 1959-03-24 Du Pont Oxidation of alkyl benzenes in the presence of alkanols
US2970164A (en) * 1956-09-07 1961-01-31 Sun Oil Co Preparation of esters by partial oxidation of petroleum fractions
DE1136688B (en) * 1957-02-09 1962-09-20 Robert Sancier Aries Process for the preparation of benzene dicarboxylic acids
US2833820A (en) * 1957-06-14 1958-05-06 Mid Century Corp Process for the preparation of isophthalic and terephthalic acids
US2833819A (en) * 1957-06-14 1958-05-06 Mid Century Corp Process for the preparation of isophthalic and terephthalic acids
US2920106A (en) * 1957-07-26 1960-01-05 Sun Oil Co Partial oxidation of alkyl aromatics
US2892864A (en) * 1958-03-06 1959-06-30 Hercules Powder Co Ltd Esterification of terephthalic acid in presence of metal oxidation catalyst
US3089907A (en) * 1958-04-21 1963-05-14 Mid Century Corp Pressure controlled liquid phase oxidation process for aromatic acid production
DE1139827B (en) * 1961-04-15 1962-11-22 Chemische Werke Witten Gesell schaft mit beschrankter Haftung, Witten Process for the improved work-up of mother liquors containing terephthalic acid dimethyl ester and isophthalic acid dimethyl ester.
US3209024A (en) * 1963-02-28 1965-09-28 Sun Oil Co Preparation of naphthalene-2, 6-dicarboxylic acid

Also Published As

Publication number Publication date
GB623836A (en) 1949-05-24

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