(19)
(11) EP 2 427 505 A1

(12)

(43) Date of publication:
14.03.2012 Bulletin 2012/11

(21) Application number: 10719819.4

(22) Date of filing: 13.05.2010
(51) International Patent Classification (IPC): 
C08F 4/659(2006.01)
C08F 10/00(2006.01)
C07F 17/00(2006.01)
(86) International application number:
PCT/US2010/001426
(87) International publication number:
WO 2011/142735 (17.11.2011 Gazette 2011/46)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 14.05.2009 US 466229

(71) Applicant: Chevron Phillips Chemical Company LP
The Woodlands, Texas 77380 (US)

(72) Inventors:
  • YANG, Qing
    Bartlesville Oklahoma 74006 (US)
  • MURRAY, Rex E.
    Bartlesville Oklahoma 74006 (US)
  • BUCK, Richard M.
    Bartlesville Oklahoma 74006 (US)

(74) Representative: Stevens, Ian Edward 
Potter Clarkson LLP Park View House 58 The Ropewalk
Nottingham NG1 5DD
Nottingham NG1 5DD (GB)

   


(54) METHOD AND SYSTEM FOR FORMING A PRECURSOR COMPOUND FOR NON-BRIDGED UNSYMMETRIC POLYOLEFIN POLYMERIZATION CATALYST