(19)

(11)

EP 3 449 038 A1

(12)

(43) Date of publication: 06.03.2019 Bulletin 2019/10 (21) Application number: 17739721.3 (22) Date of filing: 25.04.2017

(51) International Patent Classification (IPC):  C23F 11/08(2006.01) C23F 11/14(2006.01) C09K 8/54(2006.01) (86) International application number: PCT/US2017/029336 (87) International publication number: WO 2017/189528 (02.11.2017 Gazette 2017/44)

(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: 26.04.2016 US 201662327487 P (71) Applicant: Ecolab USA Inc. St. Paul, MN 55102 (US)	(72) Inventor: MOLONEY, Jeremy Katy, Texas 77450 (US) (74) Representative: HGF Limited  Delta House 50 West Nile Street Glasgow G1 2NP 50 West Nile Street Glasgow G1 2NP (GB)