(57) The invention concerns a composition containing a) 2 to 80 weight % of Ordinary Portland Cement with respect to the total weight of the composition b) 2 to 80 weight % of a calcium sulphate based binder with respect to the total weight of the composition, with the proviso that the weight ratio of a) Ordinary Portland Cement to b) calcium sulphate based binder is from 95/5 to 5/95 and c) at least one retarder for calcium sulphate based binders, the retarder being a chemical structure, which comprises from 3 to 70 amino acids. Also concerned is the use of the compositions for self levelling underlayments, tile adhesives, non-shrink grouts, floor screeds and repair mortars.
(71) BASF SE, 67056 Ludwigshafen (DE)
(84) European (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