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1. WO2019211426 - PROCESS FOR PREPARING CARBODIIMIDES

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Publication Number WO/2019/211426
Publication Date 07.11.2019
International Application No. PCT/EP2019/061352
International Filing Date 03.05.2019
IPC
C08G 18/02 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
02of isocyanates or isothiocyanates only
C08G 18/09 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
09comprising oligomerisation of isocyanates or isothiocyanates involving reaction of a part of the isocyanate or isothiocyanate groups with each other in the reaction mixture
C08G 18/76 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
74cyclic
76aromatic
C08G 18/79 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
77having hetero atoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
78Nitrogen
79characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
C08G 18/16 2006.1
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
16Catalysts
B01F 7/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
7Mixers with rotary stirring devices in fixed receptacles; Kneaders
CPC
B01F 27/50
B01J 19/0066
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
19Chemical, physical or physico-chemical processes in general; Their relevant apparatus
0053Details of the reactor
0066Stirrers
B01J 2219/00779
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
2219Chemical, physical or physico-chemical processes in general; Their relevant apparatus
00761Details of the reactor
00763Baffles
00779Baffles attached to the stirring means
C08G 18/025
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
02of isocyanates or isothiocyanates only
025the polymeric products containing carbodiimide groups
C08G 18/168
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
08Processes
16Catalysts
166Catalysts not provided for in the groups C08G18/18 - C08G18/26
168Organic compounds
C08G 18/7628
CCHEMISTRY; METALLURGY
08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
18Polymeric products of isocyanates or isothiocyanates
06with compounds having active hydrogen
70characterised by the isocyanates or isothiocyanates used
72Polyisocyanates or polyisothiocyanates
74cyclic
76aromatic
7614containing only one aromatic ring
7628containing at least one isocyanate or isothiocyanate group linked to the aromatic ring by means of an aliphatic group
Applicants
  • BASF SE [DE]/[DE]
Inventors
  • BUBOLZ, Markus
  • HAEBERLE, Karl
Agents
  • ALTMANN, Andreas
Priority Data
18170786.004.05.2018EP
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUR HERSTELLUNG VON CARBODIIMIDEN
(EN) PROCESS FOR PREPARING CARBODIIMIDES
(FR) PROCÉDÉ DE PRODUCTION DE CARBODIIMIDES
Abstract
(DE) Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von Polycarbodiimiden umfassend (i) Herstellen eines Reaktionsgemisches umfassend ein Diisocyanat und einen Katalysator, 5 und (ii) Polymerisieren des Diisocyanats zum Polycarbodiimid in einem Rührkessel durch Erhitzen des in (i) hergestellten Reaktionsgemisches auf eine Temperatur im Bereich von 20 bis 250°C bei einem Druck im Bereich von 20 bis 800 mbar, wobei das Reaktionsgemisch während des Polymerisierens mit einer Rührvorrichtung gerührt wird, 10 dadurch gekennzeichnet, dass durch den Rührvorgang das Reaktionsgemisch axial zur Drehachse des Rührvorgangs gefördert wird.
(EN) The present invention relates to a process for preparing polycarbodiimides, comprising the steps: (i) preparing a reaction mixture that comprises a diisocyanate and a catalyst, and (ii) polymerizing the diisocyanate to polycarbodiimide in a stirred tank by heating the reaction mixture prepared in (i) to a temperature in the range of 20 to 250°C at a pressure in the range of 20 to 800 mbar, the reaction mixture being stirred during polymerization by means of a stirrer, characterized in that stirring results in the reaction mixture being conveyed axially to the axis of rotation of stirring.
(FR) La présente invention concerne un procédé de production de polycarbodiimides consistant à (i) préparer un mélange réactionnel comprenant un diisocyanate et un catalyseur, et (ii) polymériser le diisocyanate en polycarbodiimide dans un ballon agité par chauffage du mélange réactionnel préparé à l'étape (i) à une température dans la plage de 20 à 250 °C sous une pression dans la plage de 20 à 800 mbar, le mélange réactionnel étant agité pendant la polymérisation avec un dispositif agitateur, caractérisé en ce que le mélange réactionnel est transporté axialement par rapport à l'axe de rotation de l'opération d'agitation grâce à l'opération d'agitation.
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