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1. (WO2013048247) MANUFACTURING POLYESTERS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2013/048247 International Application No.: PCT/NL2012/050679
Publication Date: 04.04.2013 International Filing Date: 28.09.2012
IPC:
C08G 63/78 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
63
Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
78
Preparation processes
Applicants:
AKZO NOBEL COATINGS INTERNATIONAL B.V. [NL/NL]; Velperweg 76, NL-6824 BM Arnhem, NL
Inventors:
DE HAAN, André Banier; NL
KISS, Anton Alexandru; NL
OUDSHOORN, Maarten Leonard; NL
SHAH, Mayankkumar Rameshchandra; NL
Priority Data:
11183159.028.09.2011EP
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).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)