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1. (WO1999012978) PROCESS FOR THE GAS PHASE POLYMERISATION OF OLEFINS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1999/012978    International Application No.:    PCT/GB1998/002674
Publication Date: 18.03.1999 International Filing Date: 04.09.1998
Chapter 2 Demand Filed:    08.04.1999    
IPC:
C08F 10/00 (2006.01), C08F 110/02 (2006.01)
Applicants: BP CHEMICALS LIMITED [GB/GB]; Britannic House 1 Finsbury Circus London EC2M 7BA (GB) (For All Designated States Except US).
BP CHEMICALS S.N.C. [FR/FR]; La Défense 20, place de Seine F-92400 Courbevoie (FR) (FR only).
SPEAKMAN, John, Gabriel [GB/FR]; (FR) (For US Only)
Inventors: SPEAKMAN, John, Gabriel; (FR)
Agent: PREECE, Michael; BP International Limited Group Patents & Agreements Chertsey Road Sunbury-on-Thames Middlesex TW16 7LN (GB)
Priority Data:
97430023.8 11.09.1997 EP
Title (EN) PROCESS FOR THE GAS PHASE POLYMERISATION OF OLEFINS
(FR) PROCEDE DE POLYMERISATION D'OLEFINES EN PHASE GAZEUSE
Abstract: front page image
(EN)The present invention provides an improved chromium oxide based catalyst supported on a granular or microspherical refractory oxide for the gas phase polymerisation of at least one alpha olefin containing from 2 to 12 carbon atoms, characterised in that the supported chromium oxide based catalyst has been subjected to a sole calcination/activation step consisting of a single thermal treatment performed at a temperature ranging from 200 to 450 °C under an oxygen- containing atmosphere.
(FR)La présente invention concerne un catalyseur amélioré de chrome à base d'oxyde, supporté sur un oxyde réfractaire granulaire ou microsphérique, afin d'effectuer la polymérisation en phase gazeuse d'au moins une alpha-oléfine renfermant 2 à 12 atomes de carbone. Ce catalyseur de chrome à base d'oxyde a été soumis à une étape préalable de calcination/d'activation, consistant en un traitement thermique réalisé à une température variant entre 200 et 450 °C, dans une atmosphère contenant de l'oxygène.
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, HR, HU, ID, 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, US, UZ, VN, YU, ZW.
African Regional Intellectual Property Organization (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)