| abstract |
The invention relates to a pressure sensitive adhesive composition, which comprises an aqueous polymer dispersion which comprises at least one polymer with monomeric units from a monomeric composition comprising : a) 60 to 95% by weight of 2-ethylhexyl acrylate, b) 0.1 to 15% by weight of butyl (meth)acrylate, c) 0.5 to 5% by weight of a vinyl aromatic monomer, d) 0.1 to 4% by weight of at least one ethylenically unsaturated acid, e) 0 to 20% by weight of a vinylic ester of C 2 -C 8 carboxylic acid, f) optionally, a monomer different from a), b), c), d) and e) as defined above g) at least 0.005% by weight with respect to the total weight of monomers a) + b) + c) + d) + e) + f) of at least one chain transfer agent the sum of a) + b) +c) + d) + e) + f) being equal to 100% and with the proviso that said monomeric composition does not comprise any C -C 2 alkyl (meth)acrylate. The invention does also relate to said aqueous polymer dispersion and its use in PSA compositions. |