Title:
CHROMIUM BASED POLYMERIZATION CATALYST, THE METHOD TO PREPARE IT AND POLYMERS PREPARED THEREWITH
Document Type and Number:
WIPO Patent Application WO/2005/108439
Kind Code:
A2
Abstract:
Catalyst systems for polymerizing olefins include a catalyst comprising chromium and a cocatalyst comprising a substituted or unsubstituted non-transition metal cyclopentadienyl (Cp) compound. The catalyst also comprises an inorganic oxide support. Methods of preparing a catalyst comprise contacting a support with chromium and with a non-transition metal Cp compound. The support can be contacted with a solution comprising the non-transition metal Cp compound prior to entry into a reaction zone. Methods of polymerizing at least one olefin include contacting the olefin with a catalyst comprising chromium and with a cocatalyst comprising a non-transition metal Cp. The polymerization can be performed in the presence of hydrogen. Using the cocatalyst in conjunction with the catalyst increases several properties of the polymers produced by this method. Polymer compositions produced by such methods have various unique properties, including a PDI greater than 30.
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Inventors:
MCDANIEL MAX P (US)
BENHAM ELIZABETH A (US)
SECORA STEVEN J (US)
JENSEN MICHAEL D (US)
COLLINS KATHY S (US)
BENHAM ELIZABETH A (US)
SECORA STEVEN J (US)
JENSEN MICHAEL D (US)
COLLINS KATHY S (US)
Application Number:
PCT/US2005/009669
Publication Date:
November 17, 2005
Filing Date:
March 24, 2005
Export Citation:
Assignee:
CHEVRON PHILLIPS CHEMICAL CO (US)
MCDANIEL MAX P (US)
BENHAM ELIZABETH A (US)
SECORA STEVEN J (US)
JENSEN MICHAEL D (US)
COLLINS KATHY S (US)
MCDANIEL MAX P (US)
BENHAM ELIZABETH A (US)
SECORA STEVEN J (US)
JENSEN MICHAEL D (US)
COLLINS KATHY S (US)
International Classes:
C08F10/00; C08F210/16; C08F210/02; (IPC1-7): C08F10/00; C08F4/22
Domestic Patent References:
| WO1996023006A1 | 1996-08-01 |
Foreign References:
| US3071493A | 1963-01-01 | |||
| US5418200A | 1995-05-23 | |||
| US20010004663A1 | 2001-06-21 | |||
| US20020013432A1 | 2002-01-31 | |||
| US20030199648A1 | 2003-10-23 |
Other References:
HEINEMANN, OLIVER ET AL: "Bis(indenyl) chromium Is a Dimer" ORGANOMETALLICS , 15(26), 5462-5463 CODEN: ORGND7; ISSN: 0276-7333, 1996, XP002335284
LIANG, YUANFENG ET AL: "Constrained Geometry Chromium Catalysts for Olefin Polymerization" ORGANOMETALLICS , 15(25), 5284-5286 CODEN: ORGND7; ISSN: 0276-7333, 1996, XP002335285
LIANG, YUANFENG ET AL: "Constrained Geometry Chromium Catalysts for Olefin Polymerization" ORGANOMETALLICS , 15(25), 5284-5286 CODEN: ORGND7; ISSN: 0276-7333, 1996, XP002335285
Attorney, Agent or Firm:
Brown, Kimberly L. (10001 Six Pines Drive The Woodlands, TX, US)
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