NL7216855A - - Google Patents

Info

Publication number
NL7216855A
NL7216855A NL7216855A NL7216855A NL7216855A NL 7216855 A NL7216855 A NL 7216855A NL 7216855 A NL7216855 A NL 7216855A NL 7216855 A NL7216855 A NL 7216855A NL 7216855 A NL7216855 A NL 7216855A
Authority
NL
Netherlands
Application number
NL7216855A
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 filed Critical
Publication of NL7216855A publication Critical patent/NL7216855A/xx

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
NL7216855A 1971-12-17 1972-12-12 NL7216855A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00209069A US3818680A (en) 1971-12-17 1971-12-17 Maleic anhydride recovery method

Publications (1)

Publication Number Publication Date
NL7216855A true NL7216855A (fr) 1973-06-19

Family

ID=22777197

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7216855A NL7216855A (fr) 1971-12-17 1972-12-12

Country Status (9)

Country Link
US (1) US3818680A (fr)
JP (1) JPS4867219A (fr)
BE (1) BE792879A (fr)
CA (1) CA983944A (fr)
DE (1) DE2261044A1 (fr)
FR (1) FR2163495B1 (fr)
GB (1) GB1382739A (fr)
IT (1) IT971933B (fr)
NL (1) NL7216855A (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3948623A (en) * 1972-08-29 1976-04-06 Chevron Research Company Anhydride separation
US4364748A (en) * 1977-06-24 1982-12-21 Chevron Research Company Process for recovering maleic anhydride by condensation
US4282013A (en) * 1977-11-14 1981-08-04 Chevron Research Company Vacuum pump operation in a maleic anhydride recovery system
IT1163975B (it) * 1979-03-21 1987-04-08 Ftalital Prod Chim Spec Procedimento per separare in modo continuo anidride maleica da gas di processo
DE3504146A1 (de) * 1985-02-07 1986-08-07 Basf Ag, 6700 Ludwigshafen Verfahren zur gewinnung von hochreinem maleinsaeureanhydrid aus rohem maleinsaeureanhydrid
US4941895A (en) * 1989-08-23 1990-07-17 Amoco Corporation Process for the continuous separation of maleic anhydride from process gases
US5670660A (en) * 1994-12-06 1997-09-23 Cook Composites And Polymers Co. Process for collecting airborne anhydrides
ZA973972B (en) * 1996-05-14 1998-03-23 Kvaerner Process Tech Ltd A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran.
ZA973971B (en) * 1996-05-15 1998-03-23 Kvaerner Process Tech Ltd A process for the production of at least one C4 compound selected from butane-1,4-diol, gamma-butyrolactone and tetrahydrofuran.
GB9724004D0 (en) 1997-11-13 1998-10-21 Kvaerner Process Tech Ltd Process
GB9724195D0 (en) 1997-11-14 1998-01-14 Kvaerner Process Tech Ltd Process
US5972174A (en) * 1998-01-13 1999-10-26 Huntsman Petrochemical Corporation Process for the purification of maleic anhydride
EP0962438B1 (fr) 1998-03-23 2001-06-06 Basf Aktiengesellschaft Procédé pour la préparation de 1,4-butanediol, butyrolactone et tetrahydrofuran
US8461356B2 (en) 2007-03-23 2013-06-11 Basf Se Process for obtaining maleic anhydride by distillation
US8933277B2 (en) 2009-01-12 2015-01-13 Basf Se Process for preparing polymethylols
WO2012081043A1 (fr) 2010-12-13 2012-06-21 Conser Spa Procédé amélioré de récupération d'anhydride maléique par utilisation de solvant organique
WO2024054352A1 (fr) * 2022-09-09 2024-03-14 Huntsman Petrochemical Llc Récupération d'anhydride maléique

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2294130A (en) * 1935-12-02 1942-08-25 Solvay Process Co Manufacture of dicarboxylic acid anhydride
US2140140A (en) * 1936-11-30 1938-12-13 Nat Aniline & Chem Co Inc Recovery of maleic anhydride
US2574644A (en) * 1948-07-06 1951-11-13 Chempatents Inc Recovery of polycarboxylic acid anhydrides
BE547079A (fr) * 1955-04-20
DE1274107B (de) * 1965-02-05 1968-08-01 Gelsenberg Benzin Ag Verfahren zur Reinigung von Pyromellithsaeuredianhydrid

Also Published As

Publication number Publication date
FR2163495B1 (fr) 1976-10-29
FR2163495A1 (fr) 1973-07-27
DE2261044A1 (de) 1973-06-20
CA983944A (en) 1976-02-17
BE792879A (fr) 1973-03-30
IT971933B (it) 1974-05-10
GB1382739A (en) 1975-02-05
US3818680A (en) 1974-06-25
JPS4867219A (fr) 1973-09-13

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Legal Events

Date Code Title Description
BV The patent application has lapsed