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1. (WO1998052689) PROCESS FOR RAPID ACTIVATION OF DOUBLE METAL CYANIDE CATALYSTS
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/1998/052689 International Application No.: PCT/EP1998/002098
Publication Date: 26.11.1998 International Filing Date: 09.04.1998
Chapter 2 Demand Filed: 25.11.1998
IPC:
B01J 27/26 (2006.01) ,C08G 65/26 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
27
Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
24
Nitrogen compounds
26
Cyanides
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
65
Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
02
from cyclic ethers by opening of the heterocyclic ring
26
from cyclic ethers and other compounds
Applicants:
ARCO CHEMICAL TECHNOLOGY, L.P. [US/US]; Two Greenville Crossing Suite 238, 4001 Kennett Pike Greenville, DE 19807, US (AL, AM, AT, AU, AZ, BA, BB, BE, BF, BG, BJ, BR, BY, CA, CF, CG, CH, CI, CM, CN, CU, CY, CZ, DE, DK, EE, ES, FI, FR, GA, GB, GE, GH, GM, GN, GR, GW, HU, ID, IE, IL, IS, IT, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MC, MD, MG, MK, ML, MR, MW, MX, NE, NL, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, SN, SZ, TD, TG, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW)
ARCO CHEMIE TECHNOLOGIE NEDERLAND B.V. [NL/NL]; (Theemsweg 14, 3197 KM Botlek Rotterdam) P.O. Box 7195 NL-3000 HD Rotterdam, NL (MN)
Inventors:
HAYES, John, E.; FR
LANGSDORF, Leah, J.; US
ISAACS, Bruce, H.; US
ARMELLINI, Fred, J.; US
Agent:
CROPP, John, Anthony, David; Mathys & Squire 100 Grays Inn Road London WC1X 8AL, GB
Priority Data:
08/857,99816.05.1997US
Title (EN) PROCESS FOR RAPID ACTIVATION OF DOUBLE METAL CYANIDE CATALYSTS
(FR) PROCEDE POUR ACTIVATION RAPIDE DE CATALYSEURS A CYANURE METALLIQUE DOUBLE
Abstract:
(EN) A process for activating double metal cyanide catalysts is disclosed. A polyol starter or starter/catalyst mixture is heated under vacuum under conditions effective to achieve improved stripping compared with that which can be achieved through conventional vacuum stripping. Coupling vacuum stripping with inert gas sparging or stripping in the presence of an organic solvent gives a starter/catalyst mixture that activates rapidly in an epoxide polymerization process. Rapid activation makes process start-ups reliable and reduces cycle time. The process gives polyols with lower viscosity, lower polydispersity, and lower unsaturation for better polyurethanes.
(FR) L'invention concerne un procédé permettant d'activer des catalyseurs à cyanure métallique double. Un initiateur polyol ou mélange initiateur/catalyseur est chauffé sous vide dans des conditions permettant d'améliorer l'extraction en comparaison avec celui réalisé par une extraction sous vide classique. On obtient un mélange initiateur/catalyseur très rapidement activé dans un procédé de polymérisation époxy lorsque l'on combine l'extraction sous vide avec une extraction ou un balayage d'un gaz inerte en présence d'un solvant organique. L'activation rapide rend le démarrage du procédé fiable et réduit la durée de cycle. Le procédé permet d'obtenir des polyols à faible viscosité, à faible polydispersité et à faible insaturation pour des polyuréthanes améliorés.
Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (EPO) (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)