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1. (WO2015047711) POLYBENZOXAZOLE MEMBRANES FROM SELF-CROSS-LINKABLE AROMATIC POLYIMIDE MEMBRANES
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2015/047711 International Application No.: PCT/US2014/054638
Publication Date: 02.04.2015 International Filing Date: 09.09.2014
IPC:
B01D 71/62 (2006.01) ,B01D 71/64 (2006.01) ,C08G 73/10 (2006.01) ,C08G 73/22 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
58
Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
62
Polycondensates having nitrogen-containing heterocyclic rings in the main chain
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
D
SEPARATION
71
Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
06
Organic material
58
Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
62
Polycondensates having nitrogen-containing heterocyclic rings in the main chain
64
Polyimides; Polyamide-imides; Polyester-imides; Polyamide acids or similar polyimide precursors
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
73
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups C08G12/-C08G71/238
06
Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule; Polyhydrazides; Polyamide acids or similar polyimide precursors
10
Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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
73
Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen or carbon, not provided for in groups C08G12/-C08G71/238
06
Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule; Polyhydrazides; Polyamide acids or similar polyimide precursors
22
Polybenzoxazoles
Applicants:
UOP LLC [US/US]; 25 East Algonquin Road P. O. Box 5017 Des Plaines, Illinois 60017-5017, US
Inventors:
LIU, Chunqing; US
OSMAN, Zara; US
TROXELL, Angela N.; US
Agent:
GOLDBERG, Mark; US
Priority Data:
14/039,57027.09.2013US
Title (EN) POLYBENZOXAZOLE MEMBRANES FROM SELF-CROSS-LINKABLE AROMATIC POLYIMIDE MEMBRANES
(FR) MEMBRANES POLYBENZOXAZOLE À PARTIR DE MEMBRANES POLYIMIDE AROMATIQUES AUTORÉTICULABLES
Abstract:
(EN) A method of making a polybenzoxazole (PBO) membrane from a self-cross-linked aromatic polyimide polymer membrane is provided. These membranes are useful in the separation of gas mixtures and liquid mixtures. The PBO membrane is made by fabricating a self-cross-linkable aromatic polyimide polymer membrane comprising both hydroxyl functional groups and carboxylic acid functional groups; cross-linking the polymer to form a self-cross-linked aromatic polyimide polymer membrane by heating the membrane at 250° to 300°C under an inert atmosphere; and thermal heating the self-cross-linked aromatic polyimide polymer membrane at a temperature from 350° to 500°C under an inert atmosphere to convert the self-cross-linked aromatic polyimide polymer membrane into a PBO membrane. A membrane coating step may be added by coating the selective layer surface of the PBO membrane with a thin layer of high permeability material.
(FR) La présente invention concerne un procédé de préparation d'une membrane polybenzoxazole (PBO) à partir d'une membrane polymère polyimide aromatique autoréticulée. Ces membranes sont utiles pour la séparation de mélanges gazeux et de mélanges liquides. La membrane PBO est préparée par la fabrication d'une membrane polymère polyimide aromatique autoréticulable comprenant à la fois des groupes fonctionnels hydroxyle et des groupes fonctionnels acide carboxylique; la réticulation du polymère pour former une membrane polymère polyimide aromatique autoréticulée par chauffage de la membrane à une température allant de 250 à 300 °C sous atmosphère inerte; et le traitement thermique de la membrane polymère polyimide aromatique autoréticulée à une température allant de 350 à 500 °C sous atmosphère inerte pour convertir la membrane polymère polyimide aromatique autoréticulée en une membrane PBO. Une étape de revêtement de membrane peut être ajoutée, celle-ci consistant à revêtir la surface d'une couche sélective de la membrane PBO avec une fine couche d'un matériau de perméabilité élevée.
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, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, 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, SA, 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, ST, 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, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)