The present invention relates to the use of copolymers stabilized with a
protective colloid, in the form of their polymer powders redispersible in
water or in the form of their aqueous polymer dispersions, in cement-free
or low-cement coating materials, wherein the copolymer is obtainable by
free radical polymerization, in water, of
a) from 35 to 65% by weight of vinyl acetate,
b) from 5 to 20% by weight of ethylene,
c) from 40 to 70% by weight of vinyl esters of alpha-branched, tertiary
monocarboxylic acids having 5 to 15 carbon atoms, and optionally
d) from 0.1 to 10% by weight of further copolymerizable, ethylenically
unsaturated comonomers,
the data in % by weight totaling 100% by weight.