Self-leveling screeds and trowel-applied flooring compositions containing dispersion powder compositions based on vinylaromatic-1,3-diene copolymers

A self-leveling, hydraulically-settable flooring composition, comprising

• a) from about 5 weight percent to about 80 weight percent of the total weight of said composition, based on solids, of one or more hydraulically setting inorganic binders;
• b) a vinyl aromatic-1,3-diene copolymer comprising from about 20 weight percent to about 80 weight percent of moieties derived from at least one vinyl aromatic monomer and from about 80 weight percent to about 20 weight percent of moieties derived from at least one 1,3-diene monomer, and up to about 30 weight percent of further monomers copolymerizable therewith, said weight percentages based on the weight of the copolymer, and totaling 100%;
• c) from 2 to 25 weight percent, based on the weight of the copolymer (b) of one or more protective colloids;
• and
• d) from 3 to 30 weight percent based on the sum of the weights of b) and c) of at least one fine antiblocking agent.