GB763181A - Improvements in or relating to preparation of m- and p-diisopropylbenzene - Google Patents

Improvements in or relating to preparation of m- and p-diisopropylbenzene

Info

Publication number
GB763181A
GB763181A GB12056/54A GB1205654A GB763181A GB 763181 A GB763181 A GB 763181A GB 12056/54 A GB12056/54 A GB 12056/54A GB 1205654 A GB1205654 A GB 1205654A GB 763181 A GB763181 A GB 763181A
Authority
GB
United Kingdom
Prior art keywords
diisopropylbenzene
propylene
cumene
acid
free
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
GB12056/54A
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co 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 Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Publication of GB763181A publication Critical patent/GB763181A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C07C2/00—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms
    • C07C2/54—Preparation of hydrocarbons from hydrocarbons containing a smaller number of carbon atoms by addition of unsaturated hydrocarbons to saturated hydrocarbons or to hydrocarbons containing a six-membered aromatic ring with no unsaturation outside the aromatic ring
    • C07C2/64—Addition to a carbon atom of a six-membered aromatic ring
    • C07C2/66—Catalytic processes
    • C07C2/68—Catalytic processes with halides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • C07C2527/06—Halogens; Compounds thereof
    • C07C2527/125—Compounds comprising a halogen and scandium, yttrium, aluminium, gallium, indium or thallium
    • C07C2527/126—Aluminium chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

A diisopropylbenzene substantially free from o-diisopropylbenzene and trimethylindane is obtained by propylating benzene in a first alkylation reaction with a propylene-containing gas which contains no higher molecular weight unsaturates, in the presence of a Friedel-Craft's condensation catalyst to pure cumene, contacting the cumene with about an equimolecular amount of propylene in a second alkylation reaction with 0.1 to 2.0 mols. per cent of aluminium chloride at a temperature in the range of 65-115 DEG C. until a substantial amount of diisopropylbenzene is formed which is free from o-diisopropylbenzene and subsequently separating m-diisopropylbenzene by distillation. The propylene-containing gas may be a refinery gas which contains also ethylene, but must be free from butene or butadiene. The acid acting catalyst may be 80 per cent sulphuric acid, phosphoric acid on kieselguhr, ferric or cupric pyrophosphate, aluminium chloride, zinc chloride, acid delays, hydrogen fluoride, or boron trifluoride. The percentage composition of the resulting mixture obtaining when the second alkylation is carried out at 100 DEG C. is benzene 2, cumene 18.5, m-diisopropylbenzene 37.2, p-diisopropylbenzene 18.6, triisopropylbenzene 21.0 and tetraisopropylbenzene 0.6. Specifications 763,179, 763,180 and 763,183 are referred to.
GB12056/54A 1953-06-29 1954-04-26 Improvements in or relating to preparation of m- and p-diisopropylbenzene Expired GB763181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US763181XA 1953-06-29 1953-06-29

Publications (1)

Publication Number Publication Date
GB763181A true GB763181A (en) 1956-12-12

Family

ID=22131227

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12056/54A Expired GB763181A (en) 1953-06-29 1954-04-26 Improvements in or relating to preparation of m- and p-diisopropylbenzene

Country Status (1)

Country Link
GB (1) GB763181A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945901A (en) * 1958-06-06 1960-07-19 Exxon Research Engineering Co Production of polyisopropyl benzene

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2945901A (en) * 1958-06-06 1960-07-19 Exxon Research Engineering Co Production of polyisopropyl benzene

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