| abstract |
The present application relates to a multi-component composition comprising a polyol component comprising one or more polyols and water, a polyisocyanate component comprising methylene diphenyl diisocyanate (MDI), a powder component comprising cement, calcium hydroxide and one or more aggregates and less than 0.5 wt.-%, based on the total weight of the polyol, polyisocyanate and the powder component, of a curing accelerator component comprising an amino alcohol and an acid. Polyurethane cementitious hybrid flooring or coating systems having an improved curing speed and enhanced aesthetic properties in that they show substantially no difference in colour shade can be achieved. Blister formation can be avoided. |