BE859720A - PHTHALIC ANHYDRIDE PURIFICATION PROCESS - Google Patents

PHTHALIC ANHYDRIDE PURIFICATION PROCESS

Info

Publication number
BE859720A
BE859720A BE2056340A BE2056340A BE859720A BE 859720 A BE859720 A BE 859720A BE 2056340 A BE2056340 A BE 2056340A BE 2056340 A BE2056340 A BE 2056340A BE 859720 A BE859720 A BE 859720A
Authority
BE
Belgium
Prior art keywords
purification process
phthalic anhydride
anhydride purification
phthalic
purification
Prior art date
Application number
BE2056340A
Other languages
French (fr)
Original Assignee
Bayer Ag
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 Bayer Ag filed Critical Bayer Ag
Publication of BE859720A publication Critical patent/BE859720A/en

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
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives

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)
  • Furan Compounds (AREA)
BE2056340A 1976-10-16 1977-10-14 PHTHALIC ANHYDRIDE PURIFICATION PROCESS BE859720A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762646808 DE2646808C3 (en) 1976-10-16 1976-10-16 Process for the purification of phthalic anhydride obtained in the course of the anthraquinone production

Publications (1)

Publication Number Publication Date
BE859720A true BE859720A (en) 1978-04-14

Family

ID=5990635

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2056340A BE859720A (en) 1976-10-16 1977-10-14 PHTHALIC ANHYDRIDE PURIFICATION PROCESS

Country Status (6)

Country Link
JP (1) JPS5845436B2 (en)
BE (1) BE859720A (en)
CH (1) CH633549A5 (en)
DE (1) DE2646808C3 (en)
FR (1) FR2367759A1 (en)
GB (1) GB1549533A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114853705A (en) * 2022-04-24 2022-08-05 河北海力香料股份有限公司 Method for preparing chlorophthalic anhydride by recovering 4-chlorophthalic acid monosodium salt reaction mother liquor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648163A (en) * 1927-05-13 1928-12-06 Cie Nat Matieres Colorantes Process for the purification of crude phthalic anhydride obtained by catalysis
FR1429745A (en) * 1964-04-02 1966-02-25 Basf Ag Process for the production of pure phthalic anhydride from o-xylene
DE2245555C2 (en) * 1972-09-16 1982-06-09 Bayer Ag, 5090 Leverkusen Process for the production of anthraquinone
RO59914A (en) * 1972-04-15 1976-06-15

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114853705A (en) * 2022-04-24 2022-08-05 河北海力香料股份有限公司 Method for preparing chlorophthalic anhydride by recovering 4-chlorophthalic acid monosodium salt reaction mother liquor

Also Published As

Publication number Publication date
DE2646808A1 (en) 1978-04-20
JPS5350132A (en) 1978-05-08
CH633549A5 (en) 1982-12-15
FR2367759A1 (en) 1978-05-12
JPS5845436B2 (en) 1983-10-08
FR2367759B1 (en) 1982-11-12
DE2646808B2 (en) 1979-01-25
GB1549533A (en) 1979-08-08
DE2646808C3 (en) 1979-09-20

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