IN187756B - - Google Patents

Info

Publication number
IN187756B
IN187756B IN1305MA1998A IN187756B IN 187756 B IN187756 B IN 187756B IN 1305MA1998 A IN1305MA1998 A IN 1305MA1998A IN 187756 B IN187756 B IN 187756B
Authority
IN
India
Prior art keywords
mixture
alkali metal
zone
transferring
formula
Prior art date
Application number
Inventor
Christophe Rupin
Philippe Gendarme
Philippe Corbiere
Original Assignee
Atochem Elf Sa
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 Atochem Elf Sa filed Critical Atochem Elf Sa
Publication of IN187756B publication Critical patent/IN187756B/en

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
    • C07C51/08—Preparation of carboxylic acids or their salts, halides or anhydrides from nitriles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/24—Stationary reactors without moving elements inside
    • B01J19/2415—Tubular reactors
    • B01J19/2425—Tubular reactors in parallel
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/41—Preparation of salts of carboxylic acids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Continuous preparation of an aqueous solution of an alkali metal salt of an arylacetic acid of formula (I) comprises: (a) mixing an arylacetonitrile of formula (II) with an aqueous alkali metal hydroxide solution (MOH) at a molar ratio MOH/(II) of 1.05-1.20; (b) introducing this mixture into a reaction zone at atmospheric pressure or higher and 100-180 degrees C for up to 60 minutes; (c) transferring the mixture to a separation zone; (d) transferring the mixture to a stripping zone; (e) optionally treating the mixture with a neutralising agent in a mixing zone; and (f) recovering the required solution of (I). R = 1-10C aliphatic hydrocarbon, halo, 1-6C alkoxy or phenoxy; M = alkali metal; n = 0-5; x = 1 or 2; and n + x ≤ 6.
IN1305MA1998 1997-06-16 1998-06-16 IN187756B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9707440A FR2764600B1 (en) 1997-06-16 1997-06-16 CONTINUOUS PROCESS FOR MANUFACTURING AQUEOUS SOLUTIONS OF ALKALINE SALTS OF ARYLACETIC ACIDS

Publications (1)

Publication Number Publication Date
IN187756B true IN187756B (en) 2002-06-15

Family

ID=9508022

Family Applications (1)

Application Number Title Priority Date Filing Date
IN1305MA1998 IN187756B (en) 1997-06-16 1998-06-16

Country Status (10)

Country Link
EP (1) EP0885872B1 (en)
JP (1) JPH1171322A (en)
CN (1) CN1203220A (en)
AT (1) ATE209176T1 (en)
CA (1) CA2238398A1 (en)
DE (1) DE69803244T2 (en)
ES (1) ES2167851T3 (en)
FR (1) FR2764600B1 (en)
IN (1) IN187756B (en)
PT (1) PT885872E (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1300090C (en) * 2005-03-02 2007-02-14 杭州师范学院 Process for preparing aryl acetic acid
CN106278859B (en) * 2016-08-24 2019-03-12 河北诚信集团有限公司 A kind of production technology of high-quality phenylacetic acid
CN113600119A (en) * 2021-08-04 2021-11-05 江苏聚双环新材料科技有限公司 Self-remaining separated feeding tank

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817681A (en) * 1954-12-20 1957-12-24 Monsanto Chemicals Arylacetic acids
DE1909440A1 (en) * 1968-03-18 1969-11-13 Lummos Company Process for the production of aromatic carboxylic acids
US4031243A (en) * 1975-07-03 1977-06-21 Juste, S.A. Quimico-Farmaceutica 2-(4-Isobutyl phenyl)butyric acid, salts thereof, and pharmaceutical compositions containing the same

Also Published As

Publication number Publication date
ATE209176T1 (en) 2001-12-15
CA2238398A1 (en) 1998-12-16
ES2167851T3 (en) 2002-05-16
FR2764600A1 (en) 1998-12-18
EP0885872B1 (en) 2001-11-21
FR2764600B1 (en) 1999-08-20
EP0885872A1 (en) 1998-12-23
JPH1171322A (en) 1999-03-16
DE69803244T2 (en) 2002-08-08
PT885872E (en) 2002-04-29
DE69803244D1 (en) 2002-02-21
CN1203220A (en) 1998-12-30

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