FR2362111A1 - PROCESS FOR SEPARATING MIXTURES OF DINITROANTHRAQUINONES - Google Patents

PROCESS FOR SEPARATING MIXTURES OF DINITROANTHRAQUINONES

Info

Publication number
FR2362111A1
FR2362111A1 FR7725463A FR7725463A FR2362111A1 FR 2362111 A1 FR2362111 A1 FR 2362111A1 FR 7725463 A FR7725463 A FR 7725463A FR 7725463 A FR7725463 A FR 7725463A FR 2362111 A1 FR2362111 A1 FR 2362111A1
Authority
FR
France
Prior art keywords
dinitroanthraquinone
nitrobenzene
degrees
dinitroanthraquinones
separation
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
FR7725463A
Other languages
French (fr)
Other versions
FR2362111B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
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 FR2362111A1 publication Critical patent/FR2362111A1/en
Application granted granted Critical
Publication of FR2362111B1 publication Critical patent/FR2362111B1/fr
Granted legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Le procédé selon l'invention est caractérisé en ce que : a. On traite 1 partie en poids d'un mélange de dinitroanthraquinones avec 4,5 à 9 parties en poids de nitrobenzène et/ou avec la solution obtenue après la séparation de la 1,5-dinitroanthraquinone selon selon l'étape b., et éventuellement la liqueur de lavage provenant de l'étape b. et/ou avec la solution obtenue après la séparation de la 1,X-dinitroanthraquinone (X = 5, 6, 7, 8), à une température d'environ 100 à 200 degrés C et ensuite on sépare l'indissous à une température de 100-150 degrés C, b. On traite le résidu obtenu dans l'étape a., qui consiste essentiellement en 1,5-dinitroanthraquinone, avec 1 à 4 parties en poids de nitrobenzène à une température d'environ 140 degrés C à la température d'ébullition, on refroidit ensuite à environ 90-130 degrés C, on sépare la 1,5-dinitroanthraquinone non dissoute et on la lave éventuellement au nitrobenzène, c. On refroidit à environ 90-120 degrés C la solution restant après l'étape a. après séparation de l'indissous, on sépare la 1,8-dinitroanthraquinone cristallisée et on la lave éventuellement au nitrobenzène.The method according to the invention is characterized in that: a. 1 part by weight of a mixture of dinitroanthraquinones is treated with 4.5 to 9 parts by weight of nitrobenzene and / or with the solution obtained after the separation of 1,5-dinitroanthraquinone according to step b., And optionally the wash liquor from step b. and / or with the solution obtained after the separation of 1, X-dinitroanthraquinone (X = 5, 6, 7, 8), at a temperature of about 100 to 200 degrees C and then the indissous is separated at a temperature 100-150 degrees C, b. The residue obtained in step a., Which consists essentially of 1,5-dinitroanthraquinone, is treated with 1 to 4 parts by weight of nitrobenzene at a temperature of about 140 ° C. at the boiling point, then cooled. at about 90-130 degrees C, the undissolved 1,5-dinitroanthraquinone is separated and optionally washed with nitrobenzene, c. The solution remaining after step a is cooled to about 90-120 degrees C. after separation of the indissus, the crystallized 1,8-dinitroanthraquinone is separated and optionally washed with nitrobenzene.

FR7725463A 1976-08-21 1977-08-19 PROCESS FOR SEPARATING MIXTURES OF DINITROANTHRAQUINONES Granted FR2362111A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762637733 DE2637733C3 (en) 1976-08-21 1976-08-21 Process for the separation of dinitroanthraquinone mixtures

Publications (2)

Publication Number Publication Date
FR2362111A1 true FR2362111A1 (en) 1978-03-17
FR2362111B1 FR2362111B1 (en) 1981-09-04

Family

ID=5986033

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7725463A Granted FR2362111A1 (en) 1976-08-21 1977-08-19 PROCESS FOR SEPARATING MIXTURES OF DINITROANTHRAQUINONES

Country Status (9)

Country Link
JP (1) JPS5325549A (en)
AT (1) AT350542B (en)
BE (1) BE857926A (en)
CA (1) CA1111032A (en)
CH (1) CH634038A5 (en)
DE (1) DE2637733C3 (en)
FR (1) FR2362111A1 (en)
GB (1) GB1564373A (en)
IT (1) IT1079921B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432014A1 (en) * 1978-07-27 1980-02-22 Ugine Kuhlmann PROCESS FOR OBTAINING HIGH PURITY A, A'-DINITRO-ANTHRAQUINONES
EP0012412A1 (en) * 1978-12-16 1980-06-25 Bayer Ag Process and apparatus for the extraction of dry 1,5- and/or 1,8-dinitro anthraquinone from suspensions containing solid 1,5- and/or 1,8-dinitro anthraquinone and liquid nitrobenzene
FR2458536A2 (en) * 1978-07-27 1981-01-02 Ugine Kuhlmann Purificn. of mixed di:nitro anthraquinone(s) - to obtain 1,5 and 1,8 isomers, by treating with specified acetic acid ester(s)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3329453A1 (en) * 1983-08-16 1985-03-07 Bayer Ag, 5090 Leverkusen METHOD FOR PRODUCING PURE 1-NITROANTHRACHINONE
JPH0811251B2 (en) * 1984-08-18 1996-02-07 愛知製鋼株式会社 Overload prevention device in cold roll forming
NL1035539C1 (en) * 2008-06-04 2008-06-20 Adriaan Johannes Stoffelen Shovel for use in lawn, has shark fin-like extra cutting section with specific angle at front and back, and T-shaped incision to manually remove lumps of earth
US20170350621A1 (en) * 2016-06-06 2017-12-07 Frontline Aerospace, Inc Secondary solar concentrator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167699C (en) *
DE2248704A1 (en) * 1971-10-07 1973-04-12 Sumitomo Chemical Co METHOD OF MANUFACTURING DINITROANTHRACHINONES
FR2313349A1 (en) * 1975-06-04 1976-12-31 Basf Ag ISOLATION OF DINITROANTHRAQUINONES WITH A HIGH CONTENT IN A-A'-DINITERS

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4976851A (en) * 1972-12-05 1974-07-24
JPS511709A (en) * 1974-06-25 1976-01-08 Mitsubishi Heavy Ind Ltd Renzokusokoshijono itotooshihoho

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE167699C (en) *
DE2248704A1 (en) * 1971-10-07 1973-04-12 Sumitomo Chemical Co METHOD OF MANUFACTURING DINITROANTHRACHINONES
FR2155660A5 (en) * 1971-10-07 1973-05-18 Sumitomo Chemical Co
FR2313349A1 (en) * 1975-06-04 1976-12-31 Basf Ag ISOLATION OF DINITROANTHRAQUINONES WITH A HIGH CONTENT IN A-A'-DINITERS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2432014A1 (en) * 1978-07-27 1980-02-22 Ugine Kuhlmann PROCESS FOR OBTAINING HIGH PURITY A, A'-DINITRO-ANTHRAQUINONES
FR2458536A2 (en) * 1978-07-27 1981-01-02 Ugine Kuhlmann Purificn. of mixed di:nitro anthraquinone(s) - to obtain 1,5 and 1,8 isomers, by treating with specified acetic acid ester(s)
EP0012412A1 (en) * 1978-12-16 1980-06-25 Bayer Ag Process and apparatus for the extraction of dry 1,5- and/or 1,8-dinitro anthraquinone from suspensions containing solid 1,5- and/or 1,8-dinitro anthraquinone and liquid nitrobenzene

Also Published As

Publication number Publication date
DE2637733B2 (en) 1981-07-30
JPS5325549A (en) 1978-03-09
GB1564373A (en) 1980-04-10
JPS5546382B2 (en) 1980-11-22
AT350542B (en) 1979-06-11
ATA603577A (en) 1978-11-15
BE857926A (en) 1978-02-20
CA1111032A (en) 1981-10-20
CH634038A5 (en) 1983-01-14
FR2362111B1 (en) 1981-09-04
DE2637733A1 (en) 1978-02-23
IT1079921B (en) 1985-05-13
DE2637733C3 (en) 1982-05-06

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