BE807396A - Procede de purification du dianhydride de l'acide pyromellitique - Google Patents

Procede de purification du dianhydride de l'acide pyromellitique

Info

Publication number: BE807396A
Authority: BE; Belgium
Prior art keywords: dianhydride; purification process; pyromellitic acid; pyromellitic; acid
Prior art date: 1973-11-16

Application number

BE137812A

Other languages

English (en)

Original Assignee

Labofina Sa

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.)

1973-11-16

Filing date

1973-11-16

Publication date

1974-03-15

1973-11-16 Application filed by Labofina Sa filed Critical Labofina Sa

1973-11-16 Priority to BE137812A priority Critical patent/BE807396A/fr

1974-03-15 Publication of BE807396A publication Critical patent/BE807396A/fr

1974-11-01 Priority to US519806A priority patent/US3927039A/en

1974-11-04 Priority to CA212,902A priority patent/CA1024520A/fr

1974-11-14 Priority to JP49130556A priority patent/JPS5083340A/ja

Links

CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 title 2
GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 title 1
238000000746 purification Methods 0.000 title 1

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)
Furan Compounds (AREA)
Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

BE137812A 1973-11-16 1973-11-16 Procede de purification du dianhydride de l'acide pyromellitique BE807396A (fr)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
BE137812A BE807396A (fr)	1973-11-16	1973-11-16	Procede de purification du dianhydride de l'acide pyromellitique
US519806A US3927039A (en)	1973-11-16	1974-11-01	Purification of pyromellitic dianhydride
CA212,902A CA1024520A (fr)	1973-11-16	1974-11-04	Purification de dianhydride pyromellique
JP49130556A JPS5083340A (fr)	1973-11-16	1974-11-14

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
BE137812A BE807396A (fr)	1973-11-16	1973-11-16	Procede de purification du dianhydride de l'acide pyromellitique

Publications (1)

Publication Number	Publication Date
BE807396A true BE807396A (fr)	1974-03-15

Family

ID=3842363

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE137812A BE807396A (fr)	1973-11-16	1973-11-16	Procede de purification du dianhydride de l'acide pyromellitique

Country Status (4)

Country	Link
US (1)	US3927039A (fr)
JP (1)	JPS5083340A (fr)
BE (1)	BE807396A (fr)
CA (1)	CA1024520A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4056632A (en) *	1975-07-21	1977-11-01	Burroughs Wellcome Co.	2-Hydroxymethyl-2'-aminomethyl-diphenylsulfides and method of use
DE3015988A1 (de) *	1980-04-25	1981-11-05	Akzo Gmbh, 5600 Wuppertal	Verfahren zur herstellung bzw. reinigung von di- und polycarbonsaeureanhydriden

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1289039B (de) *	1965-03-24	1969-02-13	Gelsenberg Benzin Ag	Verfahren zur Reinigung von Pyromellithsaeuredianhydrid

1973
- 1973-11-16 BE BE137812A patent/BE807396A/fr unknown
1974
- 1974-11-01 US US519806A patent/US3927039A/en not_active Expired - Lifetime
- 1974-11-04 CA CA212,902A patent/CA1024520A/fr not_active Expired
- 1974-11-14 JP JP49130556A patent/JPS5083340A/ja active Pending

Also Published As

Publication number	Publication date
JPS5083340A (fr)	1975-07-05
US3927039A (en)	1975-12-16
CA1024520A (fr)	1978-01-17

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