GB631008A - Chlorination of phthalic anhydride - Google Patents

Chlorination of phthalic anhydride

Info

Publication number
GB631008A
GB631008A GB15029/47A GB1502947A GB631008A GB 631008 A GB631008 A GB 631008A GB 15029/47 A GB15029/47 A GB 15029/47A GB 1502947 A GB1502947 A GB 1502947A GB 631008 A GB631008 A GB 631008A
Authority
GB
United Kingdom
Prior art keywords
chlorination
phthalic anhydride
reaction
molybdenum
anhydride
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
GB15029/47A
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.)
Niagara Alkali Co
Original Assignee
Niagara Alkali 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 Niagara Alkali Co filed Critical Niagara Alkali Co
Publication of GB631008A publication Critical patent/GB631008A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
    • B01J27/06—Halogens; Compounds thereof

Landscapes

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

Abstract

Chlorinated phthalic anhydrides are prepared by chlorination of phthalic anhydride in the presence of a chloride of molybdenum. Temperatures as low as 55 DEG C. may be used, usually they are from 200 DEG C. rising to 260-275 DEG C. An inert solvent may be added if desired to depress the melting point of the reaction mass. The mono-, di-, tri- or tetrachloro-derivatives or mixtures may be obtained. The catalyst, e.g. molybdenum pentachloride is removed after the reaction by passing chlorine or an inert gas through the hot reaction mixture and the last traces may be removed by washing with hot water. A two-stage batch or continuous chlorination process is described, and an example is given of the preparation of tetrachlorophthalic anhydride. Specification 357,165 is referred to.
GB15029/47A 1944-02-22 1947-06-06 Chlorination of phthalic anhydride Expired GB631008A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US631008XA 1944-02-22 1944-02-22

Publications (1)

Publication Number Publication Date
GB631008A true GB631008A (en) 1949-10-25

Family

ID=22046932

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15029/47A Expired GB631008A (en) 1944-02-22 1947-06-06 Chlorination of phthalic anhydride

Country Status (1)

Country Link
GB (1) GB631008A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2278353A (en) * 1993-05-27 1994-11-30 Mitsubishi Chem Ind Halogenated phthalic anhydride preparation
US5648170A (en) * 1993-04-27 1997-07-15 Toda Kogyo Corporation Coated granular magnetite particles and process for producing the same
CN114933579A (en) * 2022-04-26 2022-08-23 河北海力香料股份有限公司 Preparation method of tetrachlorophthalic anhydride

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5648170A (en) * 1993-04-27 1997-07-15 Toda Kogyo Corporation Coated granular magnetite particles and process for producing the same
GB2278353A (en) * 1993-05-27 1994-11-30 Mitsubishi Chem Ind Halogenated phthalic anhydride preparation
US5574172A (en) * 1993-05-27 1996-11-12 Mitsubishi Chemical Corporation Process for producing halogenated phthalic anhydride
GB2278353B (en) * 1993-05-27 1997-02-19 Mitsubishi Chem Ind Process for producing halogenated phthalic anhydride
CN114933579A (en) * 2022-04-26 2022-08-23 河北海力香料股份有限公司 Preparation method of tetrachlorophthalic anhydride

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