(19)

(11)

EP 3 420 052 A1

(12)

(43) Date of publication: 02.01.2019 Bulletin 2019/01 (21) Application number: 17716436.5 (22) Date of filing: 23.02.2017

(51) International Patent Classification (IPC):  C10J 3/72(2006.01) C10J 3/50(2006.01) C10J 3/48(2006.01) C10J 3/08(2006.01) (86) International application number: PCT/ZA2017/050011 (87) International publication number: WO 2017/147627 (31.08.2017 Gazette 2017/35)

(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 MD (30) Priority: 23.02.2016 ZA 201601209 (71) Applicant: Mintek 2194 Randburg, Johannesburg (ZA)	(72) Inventors: BISAKA, Kabwika 2194 Randburg (ZA) REYNOLDS, Quinn Gareth 2194 Randburg (ZA) CURR, Thomas Robert 2194 Randburg (ZA) (74) Representative: Patentanwälte Ruff, Wilhelm, Beier, Dauster & Partner mbB  Kronenstraße 30 70174 Stuttgart 70174 Stuttgart (DE)