GB895675A - Process for the manufacture of maleic anhydride - Google Patents

Process for the manufacture of maleic anhydride

Info

Publication number
GB895675A
GB895675A GB20886/58A GB2088658A GB895675A GB 895675 A GB895675 A GB 895675A GB 20886/58 A GB20886/58 A GB 20886/58A GB 2088658 A GB2088658 A GB 2088658A GB 895675 A GB895675 A GB 895675A
Authority
GB
United Kingdom
Prior art keywords
anisole
maleic anhydride
maleic acid
manufacture
maleic
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
GB20886/58A
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.)
Scientific Design Co Inc
Original Assignee
Scientific Design Co Inc
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 Scientific Design Co Inc filed Critical Scientific Design Co Inc
Publication of GB895675A publication Critical patent/GB895675A/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
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/56—Preparation of carboxylic acid anhydrides from organic acids, their salts, their esters or their halides, e.g. by carboxylation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/13—Dicarboxylic acids
    • C07C57/145—Maleic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/60—Two oxygen atoms, e.g. succinic anhydride

Abstract

A process for the production of maleic anhydride by the dehydration of maleic acid comprises contacting maleic acid with anisole at a temperature of at least about the boiling point of anisole at the pressure used and not less than 120 DEG C., separating the water and anisole vapours therefrom and recovering the maleic anhydride. The process may be applied to maleic acid in solid or liquid form, in anisole solution or, usually, in aqueous solution. Batchwise or continuous operation may be used and atmospheric, reduced or superatmospheric pressures are operable.
GB20886/58A 1957-07-01 1958-06-30 Process for the manufacture of maleic anhydride Expired GB895675A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US895675XA 1957-07-01 1957-07-01

Publications (1)

Publication Number Publication Date
GB895675A true GB895675A (en) 1962-05-02

Family

ID=22218352

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20886/58A Expired GB895675A (en) 1957-07-01 1958-06-30 Process for the manufacture of maleic anhydride

Country Status (1)

Country Link
GB (1) GB895675A (en)

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