GB941663A - A method of preparing oil soluble sulfonates - Google Patents

A method of preparing oil soluble sulfonates

Info

Publication number
GB941663A
GB941663A GB331260A GB331260A GB941663A GB 941663 A GB941663 A GB 941663A GB 331260 A GB331260 A GB 331260A GB 331260 A GB331260 A GB 331260A GB 941663 A GB941663 A GB 941663A
Authority
GB
United Kingdom
Prior art keywords
mixture
methanol
postdodecylbenzene
oleum
crude
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
GB331260A
Inventor
Robert Lee Anderson
Harold Mcdonald
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.)
ConocoPhillips Co
Original Assignee
Continental Oil Co
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 Continental Oil Co filed Critical Continental Oil Co
Priority to GB331260A priority Critical patent/GB941663A/en
Publication of GB941663A publication Critical patent/GB941663A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C303/00Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
    • C07C303/42Separation; Purification; Stabilisation; Use of additives
    • C07C303/44Separation; Purification

Landscapes

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

Abstract

In a process for the production of light-coloured, oil-soluble sulphonates from mixtures of aromatic sulphonic acids, such as are obtained by the action of sulphuric acid or oleum on a mixture of alkylbenzenes, the mixture is (a) diluted with an unsulphonatable petroleum oil so that it contains 3 to 7 parts of petroleum oil per part of acid-mixture, the diluted mixture is allowed to separate into two liquid phases, and the upper phase is removed from the lower within 24 hours, (b) the upper phase is blown with an inert gas, to remove SO2 and SO3, filtered with activated clay, and diluted with methanol whereupon the mixture again separates into two liquid phases, (c) the lower phase is removed and the methanol is evaporated off, leaving the required sulphonates, which are neutralized with a base. In an example "crude postdodecylbenzene" which comprises a mixture of meta- and para-, C9- to C15-dialkylbenzenes together with C15- to C24-monoalkylbenzenes, is sulphonated with oleum, the reaction-temperature being maintained at 150 DEG -160 DEG F. The sulphonated product is then mixed with white oil of a viscosity of 100 S.S.U. at 100 DEG F. After completing the purification process set forth above, the sulphonic acids, obtained by evaporating the methanol, are neutralized with sodium, potassium, ammonium, calcium or magnesium hydroxide, or with ethanolamine or morpholine. The upper layer from the methanol treatment, which comprises unsulphonated alkylbenzenes dissolved in white oil, may be treated with a further quantity of oleum, if desired.ALSO:A "crude postdodecylbenzene" comprises a mixture of meta- and para-, C9- to C15-dialkylbenzene together with C15- to C24-monoalkyl-benzenes, and is obtained by alkylating benzene with a close-boiling dodecene fraction, and submitting the alkylate to fractionation to distil off unreacted benzene, C6- to C9-alkyl benzenes and dodecylbenzene, leaving the "crude postdodecylbenzene" as bottoms.
GB331260A 1960-01-29 1960-01-29 A method of preparing oil soluble sulfonates Expired GB941663A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB331260A GB941663A (en) 1960-01-29 1960-01-29 A method of preparing oil soluble sulfonates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB331260A GB941663A (en) 1960-01-29 1960-01-29 A method of preparing oil soluble sulfonates

Publications (1)

Publication Number Publication Date
GB941663A true GB941663A (en) 1963-11-13

Family

ID=9755944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB331260A Expired GB941663A (en) 1960-01-29 1960-01-29 A method of preparing oil soluble sulfonates

Country Status (1)

Country Link
GB (1) GB941663A (en)

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