DK0646106T3 - Process for simultaneous preparation of dicarboxylic acids and diamines by cleavage of polyamides in their monomer stocks - Google Patents

Process for simultaneous preparation of dicarboxylic acids and diamines by cleavage of polyamides in their monomer stocks

Info

Publication number
DK0646106T3
DK0646106T3 DK93912919T DK93912919T DK0646106T3 DK 0646106 T3 DK0646106 T3 DK 0646106T3 DK 93912919 T DK93912919 T DK 93912919T DK 93912919 T DK93912919 T DK 93912919T DK 0646106 T3 DK0646106 T3 DK 0646106T3
Authority
DK
Denmark
Prior art keywords
dicarboxylic acids
diamines
polyamides
stocks
cleavage
Prior art date
Application number
DK93912919T
Other languages
Danish (da)
Inventor
Hardo Siegel
Ursula Seeliger
Wolfgang F Mueller
Wolfgang Habermann
Guenther Huber
Frank Heimann
Hartwig Voss
Original Assignee
Basf 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 Basf Ag filed Critical Basf Ag
Application granted granted Critical
Publication of DK0646106T3 publication Critical patent/DK0646106T3/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B3/00—Electrolytic production of organic compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/42—Electrodialysis; Electro-osmosis ; Electro-ultrafiltration; Membrane capacitive deionization
    • B01D61/44—Ion-selective electrodialysis
    • B01D61/445—Ion-selective electrodialysis with bipolar membranes; Water splitting
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
    • C07C209/62—Preparation of compounds containing amino groups bound to a carbon skeleton by cleaving carbon-to-nitrogen, sulfur-to-nitrogen, or phosphorus-to-nitrogen bonds, e.g. hydrolysis of amides, N-dealkylation of amines or quaternary ammonium compounds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/06—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid amides
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/48—Polymers modified by chemical after-treatment

Abstract

Disclosed is a method for the simultaneous preparation of dicarboxylic acids and diamines from (a) polymers based on polyamides made by reacting dicarboxylic acids or derivatives thereof with diamines or (b) compounds containing essentially such polymers, by decomposing these polymers into their constituent monomers by treating the polymers or compounds with a base in an alcoholic solution and subsequently converting electrochemically the dicarboxylic-acid salts thus produced into the corresponding dicarboxylic acids and bases.
DK93912919T 1992-06-17 1993-06-09 Process for simultaneous preparation of dicarboxylic acids and diamines by cleavage of polyamides in their monomer stocks DK0646106T3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4219756A DE4219756A1 (en) 1992-06-17 1992-06-17 Process for the simultaneous production of dicarboxylic acids and diamines by splitting polyamides into their monomeric components
PCT/EP1993/001448 WO1993025513A1 (en) 1992-06-17 1993-06-09 Method for the simultaneous preparation of dicarboxylic acids and diamines by decomposing polyamides into their constituent monomers

Publications (1)

Publication Number Publication Date
DK0646106T3 true DK0646106T3 (en) 1999-06-23

Family

ID=6461166

Family Applications (1)

Application Number Title Priority Date Filing Date
DK93912919T DK0646106T3 (en) 1992-06-17 1993-06-09 Process for simultaneous preparation of dicarboxylic acids and diamines by cleavage of polyamides in their monomer stocks

Country Status (8)

Country Link
EP (1) EP0646106B1 (en)
JP (1) JPH07507555A (en)
AT (1) ATE172185T1 (en)
CA (1) CA2138024C (en)
DE (2) DE4219756A1 (en)
DK (1) DK0646106T3 (en)
ES (1) ES2123649T3 (en)
WO (1) WO1993025513A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2736637B1 (en) * 1995-07-12 1997-08-22 Rhone Poulenc Fibres & Polymer PROCESS FOR THE CONVERSION OF POLYAMIDES TO NITROGEN-CONTAINING COMPOUNDS
FR2754192B1 (en) * 1996-10-04 1998-12-04 Rhone Poulenc Fibres & Polymer PROCESS FOR THE EXTRACTION OF AMINE COMPOUNDS FROM A LIQUID MEDIUM
DE19703426A1 (en) * 1997-01-30 1998-08-06 Basf Ag Process for the purification of alpha, beta or gamma substituted carboxylic acids
WO2024013254A1 (en) * 2022-07-14 2024-01-18 Rheinisch-Westfälische Technische Hochschule (Rwth) Aachen Method for producing a monomer from the polymer comprising the monomer

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2840606A (en) * 1955-04-15 1958-06-24 Du Pont Nylon hydrolysis
DE1088063B (en) * 1958-10-15 1960-09-01 Basf Ag Process for the recovery of dicarboxylic acids and diamines from polyamides
NL283077A (en) * 1961-09-12
US3964985A (en) * 1974-10-29 1976-06-22 Ionics, Incorporated Electrodialysis apparatus and process for ion modification
US4781809A (en) * 1986-07-21 1988-11-01 Ionics, Incorporated Recovering free organic acids from solutions in which they occur with other organic matter
DE3926634A1 (en) * 1988-08-11 1990-02-15 Fraunhofer Ges Forschung Multi-cell electrodialysis appts. - esp. for organic acid recovery from salt
DE3926642C2 (en) * 1988-08-11 1998-02-26 Fraunhofer Ges Forschung Process for obtaining an acid from its salt
HUT58558A (en) * 1990-01-18 1992-03-30 Ercros Sa Process for isolating and purifying acids from their salts by electrodialysis
US5288378A (en) * 1990-09-28 1994-02-22 Alliedsignal Inc. Guard membranes for use in electrodialysis cells

Also Published As

Publication number Publication date
CA2138024A1 (en) 1993-12-23
EP0646106B1 (en) 1998-10-14
ATE172185T1 (en) 1998-10-15
DE4219756A1 (en) 1993-12-23
DE59309064D1 (en) 1998-11-19
WO1993025513A1 (en) 1993-12-23
JPH07507555A (en) 1995-08-24
CA2138024C (en) 2000-12-12
EP0646106A1 (en) 1995-04-05
ES2123649T3 (en) 1999-01-16

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