CH554304A - Verfahren zur herstellung von dimethylmaleinsaeureanhydrid. - Google Patents

Verfahren zur herstellung von dimethylmaleinsaeureanhydrid.

Info

Publication number
CH554304A
CH554304A CH1026471A CH1026471A CH554304A CH 554304 A CH554304 A CH 554304A CH 1026471 A CH1026471 A CH 1026471A CH 1026471 A CH1026471 A CH 1026471A CH 554304 A CH554304 A CH 554304A
Authority
CH
Switzerland
Prior art keywords
producing
acid anhydride
dimethylmaleic acid
dimethylmaleic
anhydride
Prior art date
Application number
CH1026471A
Other languages
German (de)
English (en)
Original Assignee
Ciba Geigy 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
Priority to BE786156D priority Critical patent/BE786156A/fr
Application filed by Ciba Geigy Ag filed Critical Ciba Geigy Ag
Priority to CH1026471A priority patent/CH554304A/xx
Priority to US00265383A priority patent/US3833619A/en
Priority to CA145,666A priority patent/CA959056A/en
Priority to JP47068119A priority patent/JPS5246209B1/ja
Priority to GB3220972A priority patent/GB1390649A/en
Priority to DE2265202A priority patent/DE2265202C3/de
Priority to DE2233889A priority patent/DE2233889C3/de
Priority to DD164338A priority patent/DD99780A5/xx
Priority to FR7225221A priority patent/FR2145618B1/fr
Priority to FR7408132A priority patent/FR2278696A1/fr
Publication of CH554304A publication Critical patent/CH554304A/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D417/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00
    • C07D417/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings
    • C07D417/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by group C07D415/00 containing two hetero rings directly linked by a ring-member-to-ring-member bond
    • 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
CH1026471A 1971-07-13 1971-07-13 Verfahren zur herstellung von dimethylmaleinsaeureanhydrid. CH554304A (de)

Priority Applications (11)

Application Number Priority Date Filing Date Title
BE786156D BE786156A (fr) 1971-07-13 Procede de preparation de l'anhydride
CH1026471A CH554304A (de) 1971-07-13 1971-07-13 Verfahren zur herstellung von dimethylmaleinsaeureanhydrid.
US00265383A US3833619A (en) 1971-07-13 1972-06-22 Process for the manufacture of dimethylmaleic anhydride
CA145,666A CA959056A (en) 1971-07-13 1972-06-26 Process for the manufacture of dimethylmaleic anhydride
JP47068119A JPS5246209B1 (fr) 1971-07-13 1972-07-07
GB3220972A GB1390649A (en) 1971-07-13 1972-07-10 Process for the manufacture of dimethylmaleic anhydride and substituted dimethylmaleimide intermediates therefor
DE2265202A DE2265202C3 (de) 1971-07-13 1972-07-10 Neue Dimethylmaleinimidytderivate
DE2233889A DE2233889C3 (de) 1971-07-13 1972-07-10 Verfahren zur Herstellung von Dimethylmaleinsäureanhydrid
DD164338A DD99780A5 (fr) 1971-07-13 1972-07-11
FR7225221A FR2145618B1 (fr) 1971-07-13 1972-07-12
FR7408132A FR2278696A1 (fr) 1971-07-13 1974-03-11 Derives du dimethyl-2,3 maleimide

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1026471A CH554304A (de) 1971-07-13 1971-07-13 Verfahren zur herstellung von dimethylmaleinsaeureanhydrid.

Publications (1)

Publication Number Publication Date
CH554304A true CH554304A (de) 1974-09-30

Family

ID=4361295

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1026471A CH554304A (de) 1971-07-13 1971-07-13 Verfahren zur herstellung von dimethylmaleinsaeureanhydrid.

Country Status (9)

Country Link
US (1) US3833619A (fr)
JP (1) JPS5246209B1 (fr)
BE (1) BE786156A (fr)
CA (1) CA959056A (fr)
CH (1) CH554304A (fr)
DD (1) DD99780A5 (fr)
DE (2) DE2265202C3 (fr)
FR (2) FR2145618B1 (fr)
GB (1) GB1390649A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4480106A (en) * 1981-10-28 1984-10-30 Ciba-Geigy Corporation Process for the preparation of asymmetrically substituted maleic anhydrides, and asymmetrically substituted maleic anhydrides
US4644069A (en) * 1984-08-15 1987-02-17 Ciba-Geigy Corporation Process for the preparation of dimethylmaleic anhydride
US4639531A (en) * 1984-08-15 1987-01-27 Ciba-Geigy Corporation Process for the preparation of dimethylmaleic anhydride
US4571426A (en) * 1984-08-31 1986-02-18 Chemische Werke Huls Ag Process for the production of maleic anhydride
US4562264A (en) * 1984-08-31 1985-12-31 Chemische Werke Huls Aktiengesellschaft Process for the recovery of five-membered ring dicarboxylic acid anhydrides
JPS6317880A (ja) * 1986-07-09 1988-01-25 Nippon Tokushu Noyaku Seizo Kk 新規ｎ−ベンゾチアゾリル−２，５−ジヒドロピロ−ル類及び除草剤
EP0286816A1 (fr) * 1987-03-13 1988-10-19 Nihon Tokushu Noyaku Seizo K.K. 2,5-Dihydropyrroles
US5098982A (en) * 1989-10-10 1992-03-24 The B. F. Goodrich Company Radiation curable thermoplastic polyurethanes
FR2715656B1 (fr) * 1994-01-28 1996-03-22 Rhone Poulenc Chimie Procédé de préparation d'anhydride citraconique.

Also Published As

Publication number Publication date
DD99780A5 (fr) 1973-08-20
US3833619A (en) 1974-09-03
DE2233889C3 (de) 1979-02-22
DE2265202A1 (de) 1976-10-14
FR2278696A1 (fr) 1976-02-13
DE2265202C3 (de) 1980-03-13
CA959056A (en) 1974-12-10
FR2278696B1 (fr) 1976-12-10
DE2265202B2 (de) 1979-07-12
DE2233889A1 (de) 1973-01-25
DE2233889B2 (de) 1978-06-29
GB1390649A (en) 1975-04-16
FR2145618A1 (fr) 1973-02-23
FR2145618B1 (fr) 1976-03-05
BE786156A (fr) 1973-01-12
JPS5246209B1 (fr) 1977-11-22

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Legal Events

Date Code Title Description
PL Patent ceased