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(11)

EP 3 250 542 A1

(12)

(43) Date of publication: 06.12.2017 Bulletin 2017/49 (21) Application number: 15781530.9 (22) Date of filing: 02.10.2015

(51) International Patent Classification (IPC):  C07C 51/12(2006.01) C07C 53/08(2006.01) C07C 51/47(2006.01) (86) International application number: PCT/US2015/053884 (87) International publication number: WO 2016/122728 (04.08.2016 Gazette 2016/31)

(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 Designated Validation States: MA (30) Priority: 30.01.2015 US 201562109765 P 01.04.2015 US 201562141490 P 23.04.2015 US 201514694913 (71) Applicant: Celanese International Corporation Dallas, TX 75234 (US)	(72) Inventors: ABREGO, Sarah Lane Houston, Texas 77059 (US) LIU, Yaw-Haw Missouri City, Texas 77459 (US) SCATES, Mark O. Houston, Texas 77058 (US) SHAVER, Ronald David Houston, Texas 77059 (US) (74) Representative: Kador & Partner  Corneliusstraße 15 80469 München 80469 München (DE)