Title (en)

ADDITIVES FOR Cr (VI) REDUCTION IN CEMENT, SLAGS, MORTARS, CONCRETE, WASTE WATER AND MINING INDUSTRY WASTE

Title (de)

ADDITIVE ZUR REDUKTION VON CR(VI) IN ZEMENT, SCHLACKEN, MÖRTELN, BETON, ABWASSER UND BERGBAUABFALL

Title (fr)

ADDITIFS POUR LA RÉDUCTION DE Cr (VI) DANS LE CIMENT, LES LAITIERS, LES MORTIERS, LE BÉTON, LES EAUX USÉES ET LES DÉCHETS DE L INDUSTRIE MINIÈRE

Publication

EP 2364281 A4 20151223 (EN)

Application

EP 09827001 A 20091028

Priority

• ZA 2009000094 W 20091028
• ZA 200809602 A 20081111

Abstract (en)

[origin: WO2010057225A2] The invention provides a Cr (VI) or Cr6+ reduction and/or immobilization additive compositions for use in cement, cement based products, and in slags which composition includes one or more chemical compounds containing the element N in the form of simple or complex anions and/or metallic Zn powder, Zn salts, and/or Zn compounds.

IPC 8 full level

C04B 22/04 (2006.01); C02F 1/70 (2006.01); C04B 5/06 (2006.01); C04B 22/06 (2006.01); C04B 22/08 (2006.01); C04B 24/04 (2006.01)

CPC (source: EP)

C02F 1/5272 (2013.01); C02F 1/705 (2013.01); C04B 5/06 (2013.01); C04B 28/02 (2013.01); C04B 40/0039 (2013.01); C02F 2101/22 (2013.01); C02F 2103/06 (2013.01); C02F 2103/10 (2013.01); C04B 2111/1081 (2013.01)

Citation (search report)

• [XY] JP H10236856 A 19980908 - NIPPON SOLID CO LTD
• [XI] EP 0070482 A2 19830126 - SIKA AG [CH]
• [Y] DE 20311049 U1 20030918 - FERRO DUO GMBH [DE]
• [X] US 5380441 A 19950110 - THORNTON ROY F [US]
• [XI] DE 1232861 B 19670119 - GRACE W R & CO
• [X] US 4424074 A 19840103 - VILLA JOSE L [US], et al
• [X] US 3429724 A 19690225 - KEENUM JOHN C JR, et al
• [X] JP H06183800 A 19940705 - DENKI KAGAKU KOGYO KK
• [X] DE 1229434 B 19661124 - MOBIL OIL CORP
• [X] WO 9957076 A1 19991111 - MBT HOLDING AG [CH], et al
• See references of WO 2010057225A2

Designated contracting state (EPC)

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

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

WO 2010057225 A2 20100520; WO 2010057225 A3 20110421; EP 2364281 A2 20110914; EP 2364281 A4 20151223

DOCDB simple family (application)

ZA 2009000094 W 20091028; EP 09827001 A 20091028