Processing

Please wait...

Settings

Settings

Goto Application

1. WO2013048247 - MANUFACTURING POLYESTERS

Publication Number WO/2013/048247
Publication Date 04.04.2013
International Application No. PCT/NL2012/050679
International Filing Date 28.09.2012
IPC
C08G 63/78 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
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78Preparation processes
CPC
B01D 3/009
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
3Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
009in combination with chemical reactions
C08G 63/78
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
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78Preparation processes
C08G 63/785
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
63Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78Preparation processes
785characterised by the apparatus used
Y02P 20/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
20Technologies relating to chemical industry
10Process efficiency
Applicants
  • AKZO NOBEL COATINGS INTERNATIONAL B.V. [NL]/[NL]
Inventors
  • DE HAAN, André Banier
  • KISS, Anton Alexandru
  • OUDSHOORN, Maarten Leonard
  • SHAH, Mayankkumar Rameshchandra
Priority Data
11183159.028.09.2011EP
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) MANUFACTURING POLYESTERS
(FR) FABRICATION DE POLYESTERS
Abstract
(EN) The present invention provides a continuous process of manufacturing polyester comprising introducing a polyol (7) and a polycarboxylic acid (9) into a pre-reactor (1) and allowing the polyol and the polycarboxylic acid to react to obtain a pre-polymer mixture including a polyfunctional ester; introducing the pre-polymer mixture (10) into the inlet section (13) of a distillation column (5) having a stripping section (15) and a rectifying section (16); supplying stripping gas (20) into the bottom of the distillation column (5); allowing the polyfunctional ester to polymerize in the stripping section (15) so as to form polyester and a gaseous mixture including water and unreacted reactants; removing polyester (30) from the distillation column (15); and allowing the gaseous mixture to pass through the rectifying section (16), removing from the top of the distillation column (5) a gaseous phase (35), at least partially condensing the gaseous phase and returning (46) part of the condensed gaseous phase as reflux into the distillation column (5).
(FR) La présente invention concerne un procédé continu de fabrication de polyester comprenant les étapes consistant à introduire un polyol (7) et un acide polycarboxylique (9) dans un pré-réacteur (1) et à laisser le polyol et l'acide polycarboxylique réagir pour obtenir un mélange de pré-polymère comprenant un ester polyfonctionnel; introduire le mélange de pré-polymère (10) dans la section d'entrée (13) d'une colonne de distillation (5) comprenant une zone de ré-extraction (15) et une zone de rectification (16); amener un gaz de ré-extraction (20) dans le fond de la colonne de distillation (5); laisser l'ester polyfonctionnel se polymériser dans la zone de ré-extraction (15) de façon à former un polyester et un mélange gazeux comprenant de l'eau et des réactifs n'ayant pas réagi; retirer le polyester (30) de la colonne de distillation (15); et laisser le mélange gazeux passer à travers la zone de rectification (16), retirer par le haut de la colonne de distillation (5) une phase gazeuse (35), condenser au moins partiellement la phase gazeuse et renvoyer (46) une partie de la phase gazeuse condensée au reflux dans la colonne de distillation (5).
Latest bibliographic data on file with the International Bureau