GB1322020A - Process for the separation of isomer mixtures - Google Patents

Process for the separation of isomer mixtures

Info

Publication number
GB1322020A
GB1322020A GB5506370A GB5506370A GB1322020A GB 1322020 A GB1322020 A GB 1322020A GB 5506370 A GB5506370 A GB 5506370A GB 5506370 A GB5506370 A GB 5506370A GB 1322020 A GB1322020 A GB 1322020A
Authority
GB
United Kingdom
Prior art keywords
separation
melt
crystal mass
isomer mixtures
nov
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.)
Expired
Application number
GB5506370A
Other languages
English (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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst 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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB1322020A publication Critical patent/GB1322020A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C201/00—Preparation of esters of nitric or nitrous acid or of compounds containing nitro or nitroso groups bound to a carbon skeleton
    • C07C201/06—Preparation of nitro compounds
    • C07C201/16—Separation; Purification; Stabilisation; Use of additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/02—Combinations of filters of different kinds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0036—Crystallisation on to a bed of product crystals; Seeding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0059—General arrangements of crystallisation plant, e.g. flow sheets
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C205/00—Compounds containing nitro groups bound to a carbon skeleton
    • C07C205/07—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms
    • C07C205/11—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings
    • C07C205/12—Compounds containing nitro groups bound to a carbon skeleton the carbon skeleton being further substituted by halogen atoms having nitro groups bound to carbon atoms of six-membered aromatic rings the six-membered aromatic ring or a condensed ring system containing that ring being substituted by halogen atoms

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
GB5506370A 1969-11-21 1970-11-19 Process for the separation of isomer mixtures Expired GB1322020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691958461 DE1958461C3 (de) 1969-11-21 1969-11-21 Verfahren zur kontinuierlichen Trennung von o-/p-Nitrochlorbenzol aus einem Isomerengemisch von o-/p-/m-Nitrochlorbenzol

Publications (1)

Publication Number Publication Date
GB1322020A true GB1322020A (en) 1973-07-04

Family

ID=5751679

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5506370A Expired GB1322020A (en) 1969-11-21 1970-11-19 Process for the separation of isomer mixtures

Country Status (11)

Country Link
AT (1) AT305977B (cg-RX-API-DMAC10.html)
BE (1) BE759151A (cg-RX-API-DMAC10.html)
CA (1) CA927843A (cg-RX-API-DMAC10.html)
CH (1) CH545118A (cg-RX-API-DMAC10.html)
CS (1) CS174806B2 (cg-RX-API-DMAC10.html)
DE (1) DE1958461C3 (cg-RX-API-DMAC10.html)
FR (1) FR2069748A5 (cg-RX-API-DMAC10.html)
GB (1) GB1322020A (cg-RX-API-DMAC10.html)
IL (1) IL35703A (cg-RX-API-DMAC10.html)
NL (1) NL7016765A (cg-RX-API-DMAC10.html)
SE (1) SE387328B (cg-RX-API-DMAC10.html)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436377A (en) * 1993-09-10 1995-07-25 Bayer Aktiengesellschaft Process for isolating M-dichlorobenzene from mixtures of dichlorobenzene isomers
WO2000006279A1 (en) * 1998-07-29 2000-02-10 Universita' Degli Studi Di Roma 'la Sapienza' Process for purifying solid chemical products by dry-sweating
CN101906043A (zh) * 2010-08-19 2010-12-08 江苏隆昌化工有限公司 一种溶剂洗涤法提纯高纯度2,5-二氯硝基苯的生产工艺
CN115819245A (zh) * 2022-11-16 2023-03-21 湖北东方化工有限公司 一种用于单硝基甲苯精馏与熔融结晶的新型耦合工艺方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2672816B1 (fr) * 1991-02-18 1994-09-23 Inst Tech Vigne Vin Installation pour la separation en continu par cristallisation et par filtration d'un sel peu soluble dissout dans une solution liquide.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5436377A (en) * 1993-09-10 1995-07-25 Bayer Aktiengesellschaft Process for isolating M-dichlorobenzene from mixtures of dichlorobenzene isomers
WO2000006279A1 (en) * 1998-07-29 2000-02-10 Universita' Degli Studi Di Roma 'la Sapienza' Process for purifying solid chemical products by dry-sweating
CN101906043A (zh) * 2010-08-19 2010-12-08 江苏隆昌化工有限公司 一种溶剂洗涤法提纯高纯度2,5-二氯硝基苯的生产工艺
CN101906043B (zh) * 2010-08-19 2013-06-12 江苏隆昌化工有限公司 一种溶剂洗涤法提纯高纯度2,5-二氯硝基苯的生产工艺
CN115819245A (zh) * 2022-11-16 2023-03-21 湖北东方化工有限公司 一种用于单硝基甲苯精馏与熔融结晶的新型耦合工艺方法

Also Published As

Publication number Publication date
SE387328B (sv) 1976-09-06
NL7016765A (cg-RX-API-DMAC10.html) 1971-05-25
SU383278A3 (cg-RX-API-DMAC10.html) 1973-05-25
IL35703A (en) 1975-02-10
BE759151A (fr) 1971-05-19
CS174806B2 (cg-RX-API-DMAC10.html) 1977-04-29
DE1958461C3 (de) 1973-07-12
AT305977B (de) 1973-03-26
DE1958461B2 (de) 1972-12-14
FR2069748A5 (cg-RX-API-DMAC10.html) 1971-09-03
IL35703A0 (en) 1971-01-28
CA927843A (en) 1973-06-05
DE1958461A1 (de) 1971-07-29
CH545118A (de) 1973-12-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years