GB749187A - Process for preparing ú­-di-isopropyl benzene and terephthalic acid - Google Patents

Process for preparing ú­-di-isopropyl benzene and terephthalic acid

Info

Publication number
GB749187A
GB749187A GB634553A GB634553A GB749187A GB 749187 A GB749187 A GB 749187A GB 634553 A GB634553 A GB 634553A GB 634553 A GB634553 A GB 634553A GB 749187 A GB749187 A GB 749187A
Authority
GB
United Kingdom
Prior art keywords
benzene
isopropyl benzene
isopropyl
acid
cumone
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
GB634553A
Inventor
Nicolaas Max
Ype Schaafsma
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Priority to GB634553A priority Critical patent/GB749187A/en
Publication of GB749187A publication Critical patent/GB749187A/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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C15/00—Cyclic hydrocarbons containing only six-membered aromatic rings as cyclic parts
    • C07C15/02—Monocyclic hydrocarbons
    • 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
    • C07C51/27—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids
    • C07C51/275—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with oxides of nitrogen or nitrogen-containing mineral acids of hydrocarbyl 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

A continuous process for the preparation of p-di-isopropyl benzene comprises alkylating benzene or cumone or a mixture thereof to produce a product containing o-, m- and p-di-isopropyl benzenes, subjecting the product to a distillation treatment to isolate p-di-isopropyl benzene, a fraction containing o- and m-di-isopropyl benzene and a higher boiling fraction containing higher isopropylated benzene, adding to the fraction containing o- and m-di-isopropyl benzene at least an equimolecular quantity of benzene, subjecting the mixture to a trans alkylation treatment yielding cumone, and recycling the cumone to the alkylation stage. The p-di-isopropyl benzene may be oxidized by air in the liquid phase, as described in Specification 737,439, or oxidized by means of 30-40 per cent nitric acid to form p. terephthalic acid. As alkylation catalyst, sulphuric acid is preferred, although aluminium chloride, boron fluoride, boron fluoride with phosphoric acid, hydrofluoric acid, aluminium silicates, phosphoric acid on kieselguhr, and titanium tetrachloride may also be used. The transalkylation stage may be carried out at 230-260 DEG C. when the catalyst is composed of Al2O3 and SiO2 and between 0 DEG and 100 DEG C. when AlCl3 is used. Specification 737,439 is referred to.
GB634553A 1953-03-06 1953-03-06 Process for preparing ú­-di-isopropyl benzene and terephthalic acid Expired GB749187A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB634553A GB749187A (en) 1953-03-06 1953-03-06 Process for preparing ú­-di-isopropyl benzene and terephthalic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB634553A GB749187A (en) 1953-03-06 1953-03-06 Process for preparing ú­-di-isopropyl benzene and terephthalic acid

Publications (1)

Publication Number Publication Date
GB749187A true GB749187A (en) 1956-05-23

Family

ID=9812791

Family Applications (1)

Application Number Title Priority Date Filing Date
GB634553A Expired GB749187A (en) 1953-03-06 1953-03-06 Process for preparing ú­-di-isopropyl benzene and terephthalic acid

Country Status (1)

Country Link
GB (1) GB749187A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848514A (en) * 1954-07-30 1958-08-19 Shell Dev Process for producing diisopropyl benzenes
US2881227A (en) * 1954-10-22 1959-04-07 Shell Dev Production of dhsopropyl benzenes
DE1079027B (en) * 1956-07-23 1960-04-07 Bataafsche Petroleum Process for the production of terephthalic acid and / or isophthalic acid
DE1226552B (en) * 1956-07-23 1966-10-13 Universal Oil Prod Co Process for the preparation of a selected isomer of a polyalkylated aromatic hydrocarbon
DE1268125B (en) * 1956-07-03 1968-05-16 Midi Century Corp Process for the preparation of p-diisopropylbenzene from benzene and propylene

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2848514A (en) * 1954-07-30 1958-08-19 Shell Dev Process for producing diisopropyl benzenes
US2881227A (en) * 1954-10-22 1959-04-07 Shell Dev Production of dhsopropyl benzenes
DE1268125B (en) * 1956-07-03 1968-05-16 Midi Century Corp Process for the preparation of p-diisopropylbenzene from benzene and propylene
DE1079027B (en) * 1956-07-23 1960-04-07 Bataafsche Petroleum Process for the production of terephthalic acid and / or isophthalic acid
DE1226552B (en) * 1956-07-23 1966-10-13 Universal Oil Prod Co Process for the preparation of a selected isomer of a polyalkylated aromatic hydrocarbon

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