| 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 C2-C8 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 C1-C2 alkyl (meth)acrylate. The invention does also relate to said aqueous polymer dispersion and its use in PSA compositions. |