The instant invention pertains to a concentrated aqueous dispersion of
organic light stabilizers with a particle size of less than 1000 nm,
prepared by heterophase radical polymerization of ethylenically
unsaturated monomers in the presence of the light stabilizers, wherein
the weight ratio of light stabilizer to polymeric carrier is greater than
50/100. Another aspect of the invention is a process for the preparation
of such aqueous dispersions with high light stabilizer content. Aqueous
dispersions prepared according to this process are useful ingredients for
adhesives, aqueous emulsions of natural or synthetic rubbers, water based
inks or a water based coating compositions, which are consequently also
subjects of the invention.