MX9604231A - Obtencion de disociando de 2,6-toluilen a partir de una mezcla que comprende disociando de 2,6-toluilen y disociando de 2,4-toluileno. - Google Patents

Obtencion de disociando de 2,6-toluilen a partir de una mezcla que comprende disociando de 2,6-toluilen y disociando de 2,4-toluileno.

Info

Publication number
MX9604231A
MX9604231A MX9604231A MX9604231A MX9604231A MX 9604231 A MX9604231 A MX 9604231A MX 9604231 A MX9604231 A MX 9604231A MX 9604231 A MX9604231 A MX 9604231A MX 9604231 A MX9604231 A MX 9604231A
Authority
MX
Mexico
Prior art keywords
diisocyanate
toluene
obtaining
mixture
mixture containing
Prior art date
Application number
MX9604231A
Other languages
English (en)
Other versions
MXPA96004231A (es
Inventor
Jean-Claude Parron
Denis Revelant
Francois Vachet
Original Assignee
Rhone Poulenc Chimie
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 Rhone Poulenc Chimie filed Critical Rhone Poulenc Chimie
Publication of MX9604231A publication Critical patent/MX9604231A/es
Publication of MXPA96004231A publication Critical patent/MXPA96004231A/es

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

La presente invencion se refiere a un procedimiento para obtener diisocianato de 2,6-toluileno virtualmente en condicion pura a partir de una mezcla de isomeros 2,4 y 2,6 del diisocianato de toluileno. El procedimiento segun la invencion, se caracteriza porque se somete la mezcla de los isomeros citados por lo menos a un ciclo de cristalizacion y fusion, que permite la separacion del isomero diisocianato de 2,6-tolouilen. De acuerdo con una variante del procedimiento, previamente al ciclo de cristalizacion y fusion, se pone la mezcla en contacto con un compuesto o un catalizador susceptible de transformar una parte del isomero diisocianato de 2,4-toluileno presente y se separa el isomero 2,4 que ya reacciono. El procedimiento segun la invencion, presenta la ventaja de dar subproductos utilizables.
MXPA/A/1996/004231A 1994-03-25 1995-03-24 Obtencion de disociando de 2,6-toluilen a partir de una mezcla que comprende disociando de 2,6-toluilen y disociando de 2,4-toluileno MXPA96004231A (es)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR9403640A FR2717800B1 (fr) 1994-03-25 1994-03-25 Obtention de 2.6-toluylene diisocyanate à partir d'un mélange comprenant du 2.6-toluylene diisocyanate et du 2.4-toluylene diisocyanate.
FR94/03640 1994-03-25
FR9403640 1994-03-25
PCT/FR1995/000366 WO1995026332A1 (fr) 1994-03-25 1995-03-24 Obtention de 2.6-toluylene diisocyanate a partir d'un melange comprenant du 2.6-toluylene diisocyanate et du 2.4-toluylene diisocyanate

Publications (2)

Publication Number Publication Date
MX9604231A true MX9604231A (es) 1998-05-31
MXPA96004231A MXPA96004231A (es) 1998-10-23

Family

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Also Published As

Publication number Publication date
US5783727A (en) 1998-07-21
AU2141995A (en) 1995-10-17
FR2717800B1 (fr) 1996-05-31
DE69513645T2 (de) 2000-06-29
BR9507246A (pt) 1997-10-07
KR970702242A (ko) 1997-05-13
CN1168665A (zh) 1997-12-24
EP0751931B1 (fr) 1999-12-01
EP0751931A1 (fr) 1997-01-08
PL320684A1 (en) 1997-10-27
WO1995026332A1 (fr) 1995-10-05
PL179038B1 (en) 2000-07-31
FR2717800A1 (fr) 1995-09-29
DE69513645D1 (de) 2000-01-05
JPH10507738A (ja) 1998-07-28

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees