BE698804A - - Google Patents

Info

Publication number: BE698804A
Authority: BE; Belgium

Application number

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.)

1966-05-21

Filing date

1967-05-22

Publication date

1967-11-22

1967-05-22 Application filed filed Critical

1967-11-22 Publication of BE698804A publication Critical patent/BE698804A/xx

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)
Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

BE698804D 1966-05-21 1967-05-22 BE698804A (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE1966B0087234 DE1266748C2 (de)	1966-05-21	1966-05-21	Verfahren zur Verhinderung der Verkrustung von Heizflaechen bei der kontinuierlichen Destillation von Phthalsaeureanhydrid
DE1618136A DE1618136C3 (de)	1966-05-21	1967-04-15	Verfahren zur destillativen Reinigung von Phthalsäureanhydrid

Publications (1)

Publication Number	Publication Date
BE698804A true BE698804A (de)	1967-11-22

Family

ID=25967897

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE698804D BE698804A (de)	1966-05-21	1967-05-22

Country Status (7)

Country	Link
US (1)	US3420750A (de)
AT (1)	AT269850B (de)
BE (1)	BE698804A (de)
CH (1)	CH479523A (de)
DE (2)	DE1266748C2 (de)
GB (1)	GB1180117A (de)
NL (1)	NL6706981A (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
NL6905713A (de) *	1968-04-13	1969-10-15
DE1814774B1 (de) *	1968-12-14	1969-12-04	Zieren Chemiebau Gmbh Dr A	Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid
FR2224435B1 (de) *	1973-04-05	1976-11-12	Rhone Progil
US4397768A (en) *	1981-02-26	1983-08-09	Oxidaciones Organicas, C.A. "Oxidor"	Supported catalyst for the preparation of phthalic anhydride
DE3504146A1 (de) *	1985-02-07	1986-08-07	Basf Ag, 6700 Ludwigshafen	Verfahren zur gewinnung von hochreinem maleinsaeureanhydrid aus rohem maleinsaeureanhydrid
DE19939629A1 (de) *	1999-08-20	2001-02-22	Basf Ag	Verfahren zur Herstellung von spezifikationsgerechtem Phthalsäureanhydrid

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR545132A (fr) *	1920-11-05	1922-10-06		Machine pour rouler les cigarillos et autres articles analogues
NL46159C (de) *	1936-02-15
US2128323A (en) *	1937-04-15	1938-08-30	Solvay Process Co	Phthalic acid manufacture
GB795229A (en) *	1955-12-12	1958-05-21	Dominion Tar & Chemical Co	Improvements in or relating to phthalic anhydride
US3054729A (en) *	1958-11-28	1962-09-18	Arthur F Smith	Distillation film wiping apparatus
US3011955A (en) *	1959-06-04	1961-12-05	Scient Design Co	Purification of phthalic anhydride
NL253742A (de) *	1959-07-13
US3084110A (en) *	1959-12-23	1963-04-02	Phillips Petroleum Co	Method and apparatus for preventing stagnation near the reboiler of a distillation tower
DE1167810B (de) *	1960-11-12	1964-04-16	Basf Ag	Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid
DE1227443B (de) *	1964-03-24	1966-10-27	Metallgesellschaft Ag	Verfahren zur Gewinnung von reinem Phthalsaeureanhydrid
FR1471085A (fr) *	1965-05-04	1967-02-24	Metallgesellschaft Ag	Procédé de fabrication d'anhydride phtalique de très grande pureté
US3289734A (en) *	1965-08-17	1966-12-06	Nalco Chemical Co	Scale deposition inhibition in black liquor multiple effect concentration processes using a styrene copolymer

1966
- 1966-05-21 DE DE1966B0087234 patent/DE1266748C2/de not_active Expired
1967
- 1967-04-15 DE DE1618136A patent/DE1618136C3/de not_active Expired
- 1967-05-12 CH CH673667A patent/CH479523A/de not_active IP Right Cessation
- 1967-05-19 GB GB23398/67A patent/GB1180117A/en not_active Expired
- 1967-05-19 NL NL6706981A patent/NL6706981A/xx unknown
- 1967-05-19 AT AT470967A patent/AT269850B/de active
- 1967-05-19 US US639829A patent/US3420750A/en not_active Expired - Lifetime
- 1967-05-22 BE BE698804D patent/BE698804A/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
DE1618136A1 (de)	1971-03-11
DE1266748C2 (de)	1973-07-19
GB1180117A (en)	1970-02-04
US3420750A (en)	1969-01-07
AT269850B (de)	1969-04-10
CH479523A (de)	1969-10-15
DE1618136B2 (de)	1977-01-27
DE1266748B (de)	1968-04-25
NL6706981A (de)	1967-11-22
DE1618136C3 (de)	1983-04-07

Publication	Publication Date	Title
AU5917865A (de)	1967-11-23
AU428063B2 (de)	1972-09-13
AU424443B2 (de)	1972-05-24
AU414526B2 (de)	1971-06-30
AU433222B2 (de)	1973-03-01
AU421822B2 (de)	1972-02-28
AU417216B2 (de)	1971-09-21
AU415165B1 (de)	1971-07-23
AU612166A (de)	1968-01-04
AU5895065A (de)	1967-11-09
AU1111066A (de)	1968-03-21
AU1144366A (de)	1968-04-26
AU218666A (de)	1967-08-31
BE284991A (de)
BE618801A (de)
AU415780B2 (de)	1971-08-10
AU433620A (de)	1969-03-27
AU407778B2 (de)	1970-11-05
BE674713A (de)	1966-05-03
AU411645B2 (de)	1971-03-24
BE694509A (de)	1967-08-23
BE694246A (de)	1967-08-17
AU6852465A (de)	1968-05-09
AU855865A (de)	1968-01-25
AU92366A (de)	1968-07-18

Legal Events

Date	Code	Title	Description
1987-01-01	RE20	Patent expired	Owner name: BADISCHE ANILIN-& SODAFABRIK A.G. Effective date: 19870522

Date

Code

Title

Description

1987-01-01

RE20

Patent expired

Owner name: BADISCHE ANILIN-& SODAFABRIK A.G.

Effective date: 19870522