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(11)

EP 2 836 284 A2

(12)

(88) Date of publication A3: 03.01.2014 (43) Date of publication: 18.02.2015 Bulletin 2015/08 (21) Application number: 13717384.5 (22) Date of filing: 04.04.2013

(51) International Patent Classification (IPC):  B01D 53/00(2006.01) C08F 6/00(2006.01) C08F 2/00(2006.01) C08F 2/01(2006.01) C08J 11/02(2006.01) C08F 10/02(2006.01) (86) International application number: PCT/US2013/035274 (87) International publication number: WO 2013/154907 (17.10.2013 Gazette 2013/42)

(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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 13.04.2012 US 201213447003 (71) Applicants: Chevron Phillips Chemical Company LP The Woodlands, Texas 77380 (US) Kufeld, Scott, E. Houston, TX 77004 (US) Hottovy, John, D. Kingwood, TX 77339 (US) Chang, Ai-Fu Houston, TX 77027 (US)

(72) Inventors: KUFELD Scott, E. Houston, TX 77004 (US) HOTTOVY, John D. Porter, Texas 77365 (US) CHANG, Ai-fu Humble, TX 77396 (US) (74) Representative: Nash, David Allan  Haseltine Lake LLP Redcliff Quay 120 Redcliff Street Bristol BS1 6HU Bristol BS1 6HU (GB)