CH594587A5 - - Google Patents

Info

Publication number
CH594587A5
CH594587A5 CH190775A CH190775A CH594587A5 CH 594587 A5 CH594587 A5 CH 594587A5 CH 190775 A CH190775 A CH 190775A CH 190775 A CH190775 A CH 190775A CH 594587 A5 CH594587 A5 CH 594587A5
Authority
CH
Switzerland
Application number
CH190775A
Inventor
Rudolf Dr Sartorius
Hans Stapf
Original Assignee
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 filed Critical Hoechst Ag
Publication of CH594587A5 publication Critical patent/CH594587A5/xx

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH190775A 1974-02-20 1975-02-17 CH594587A5 (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742408011 DE2408011A1 (de) 1974-02-20 1974-02-20 Verfahren zur gewinnung von technisch reiner essigsaeure durch extraktivdestillation

Publications (1)

Publication Number Publication Date
CH594587A5 true CH594587A5 (da) 1978-01-13

Family

ID=5907871

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190775A CH594587A5 (da) 1974-02-20 1975-02-17

Country Status (10)

Country Link
US (1) US3951755A (da)
JP (1) JPS50117713A (da)
BE (1) BE825761A (da)
CA (1) CA1052315A (da)
CH (1) CH594587A5 (da)
DE (1) DE2408011A1 (da)
FR (1) FR2261250B1 (da)
GB (1) GB1440908A (da)
IT (1) IT1031819B (da)
NL (1) NL7501765A (da)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2545658C2 (de) * 1975-10-11 1985-12-19 Basf Ag, 6700 Ludwigshafen Verfahren zur Gewinnung von Carbonsäuren aus ihren wäßrigen Lösungen
US4217460A (en) * 1975-10-11 1980-08-12 Basf Aktiengesellschaft Isolation of formic acid from its aqueous solutions
FR2466448A1 (fr) * 1979-10-01 1981-04-10 Propylox Sa Procede pour la recuperation d'acides carboxyliques a partir de melanges contenant des esters de glycols derives de ces acides
NL8103517A (nl) * 1981-07-24 1983-02-16 Badger Bv Werkwijze voor het scheiden van carbonzuren van mengsels met niet-zuren door een absorptie-stripbehandeling.
DE3319651A1 (de) * 1983-05-31 1984-12-06 Basf Ag, 6700 Ludwigshafen Verfahren zur destillativen gewinnung von ameisensaeure
US4735690A (en) * 1986-03-10 1988-04-05 Lloyd Berg Dehydration of impure formic acid by extractive distillation
US4670105A (en) * 1986-04-07 1987-06-02 Lloyd Berg Dehydration of propanoic acid by extractive distillation
US4729818A (en) * 1987-04-16 1988-03-08 Lloyd Berg Dehydration of acetic acid by extractive distillation
US4894482A (en) * 1988-12-06 1990-01-16 Hoechst Celanese Corporation Process for drying hydrogen fluoride-carboxylic acid mixtures
US5167774A (en) * 1992-02-06 1992-12-01 Lloyd Berg Dehydration of acetic acid by extractive distillation
US5424190A (en) * 1992-10-13 1995-06-13 United States Biochemical Corporation Method for using amide-containing stop solution
US6946060B2 (en) * 2002-07-01 2005-09-20 Mallinckrodt Inc. Purification of N,N-dimethylacetamide
JP2005154435A (ja) * 2003-11-07 2005-06-16 Mitsubishi Chemicals Corp モノカルボン酸の分離方法
CA2719804C (en) * 2008-04-03 2015-11-24 Dow Corning Corporation Method of dehydrating acetic acid
EP2470491A4 (en) 2009-08-27 2015-02-25 Iogen Energy Corp RECOVERY OF VOLATILE CARBOXYLIC ACIDS BY EXTRACTIVE EVAPORATION
US8981146B2 (en) 2009-08-27 2015-03-17 Iogen Energy Corporation Recovery of volatile carboxylic acids by a stripper-extractor system
CN104447275A (zh) * 2014-11-28 2015-03-25 浙江新和成药业有限公司 一种从醋酸废水中提纯醋酸的方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425542A (en) * 1944-07-13 1947-08-12 Vernon K Krieble Process for dehydrating carboxylic acids
US2578698A (en) * 1948-09-24 1951-12-18 Kellogg M W Co Dehydration of organic acids
US3890208A (en) * 1973-08-13 1975-06-17 Petro Tex Chem Corp Extractive distillation with furfurol and acyclic ketone cosolvent

Also Published As

Publication number Publication date
GB1440908A (en) 1976-06-30
JPS50117713A (da) 1975-09-16
FR2261250A1 (da) 1975-09-12
BE825761A (fr) 1975-08-20
DE2408011A1 (de) 1975-09-04
FR2261250B1 (da) 1978-08-18
CA1052315A (en) 1979-04-10
IT1031819B (it) 1979-05-10
NL7501765A (nl) 1975-08-22
US3951755A (en) 1976-04-20

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Legal Events

Date Code Title Description
PL Patent ceased