An aqueous polymer dispersion prepared by free-radical polymerization of
vinyl acetate in the presence of at least one ionic emulsifier, at least
one free-radical initiator and at least one protective colloid, wherein
the polymerization is carried out in the presence of a polymerization
regulator and wherein the ratio by weight of protective colloid to ionic
emulsifier is at least 4:1 and wherein the ratio by weight of vinyl
acetate monomer to protective colloid is between 19:1 and 4:1.