GB1088220A - Purification process - Google Patents

Purification process

Info

Publication number
GB1088220A
GB1088220A GB4339566A GB4339566A GB1088220A GB 1088220 A GB1088220 A GB 1088220A GB 4339566 A GB4339566 A GB 4339566A GB 4339566 A GB4339566 A GB 4339566A GB 1088220 A GB1088220 A GB 1088220A
Authority
GB
United Kingdom
Prior art keywords
melt
purified
crystals
acid
compound
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
GB4339566A
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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Publication of GB1088220A publication Critical patent/GB1088220A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation
    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Cephalosporin Compounds (AREA)

Abstract

Hydrocarbons, which form crystals and melt without decomposition, are purified by adding to a melt of the crude compound the same substance in crude solid finely divided form while maintaining the melt in an adiabatic state and, after melting equilibrium is reached, separating purified crystals of the compound from the melt. Among compounds which may be purified by the process are, for example, cyclohexane, cyclododecane, benzene and p-xylene.ALSO:Organic compounds, other than lactams, which form crystals and melt without decomposition are purified by adding to a melt of the crude compound the same substance in crude solid finely divided form while maintaining the melt in an adiabatic state and, after melting equilibrium is reached, separating crystals of the organic compound in purified form from the melt. Among compounds which may be purified by the process are, for example, cyclododecanol, cyclododecanone, cyclohexanone oxime, hexamethylene diamine, cyclohexanecarboxylic acid, w-cyanoundecanoic acid, cyclododecanecarboxylic acid, adipic acid, phenol, p-hydroxybenzoic acid methyl ester and dimethyl terephthalate.
GB4339566A 1965-10-01 1966-09-28 Purification process Expired GB1088220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1361665A CH458284A (en) 1965-10-01 1965-10-01 Process for cleaning up organic substances

Publications (1)

Publication Number Publication Date
GB1088220A true GB1088220A (en) 1967-10-25

Family

ID=4393918

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4339566A Expired GB1088220A (en) 1965-10-01 1966-09-28 Purification process

Country Status (7)

Country Link
BE (1) BE687693A (en)
CH (1) CH458284A (en)
CS (1) CS152268B2 (en)
DE (1) DE1300567C2 (en)
ES (1) ES331733A1 (en)
GB (1) GB1088220A (en)
NL (1) NL6613756A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265792A1 (en) * 1986-10-20 1988-05-04 General Electric Company Process for crystallizing bisphenol-A
US4873369A (en) * 1986-03-11 1989-10-10 Basf Aktiengesellschaft Purification of cyclohexanone oxime containing ammonium sulfate
CN113292450A (en) * 2021-06-23 2021-08-24 山东方明化工股份有限公司 Refining and purifying method of cyclohexanone oxime

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110423206B (en) * 2019-07-17 2022-07-08 天津大学 Method for separating cyclohexanone oxime, cyclohexanone and toluene from ammoximation reaction product

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4873369A (en) * 1986-03-11 1989-10-10 Basf Aktiengesellschaft Purification of cyclohexanone oxime containing ammonium sulfate
EP0265792A1 (en) * 1986-10-20 1988-05-04 General Electric Company Process for crystallizing bisphenol-A
CN113292450A (en) * 2021-06-23 2021-08-24 山东方明化工股份有限公司 Refining and purifying method of cyclohexanone oxime

Also Published As

Publication number Publication date
CS152268B2 (en) 1973-12-19
CH458284A (en) 1968-06-30
DE1300567B (en) 1969-08-07
ES331733A1 (en) 1967-09-16
BE687693A (en) 1967-03-01
DE1300567C2 (en) 1976-04-01
NL6613756A (en) 1967-04-03

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