Polymers sensitive adhesives to pressure

This pressure-sensitive adhesive polymer is obtained by emulsion polymerization of the mixture of the following manomeres, for a total of 100 wt%: (A) 40 to 95% by weight of at least one (meth) acrylic or vinyl monomer capable of yielding a homopolymer having a glass transition temperature equal to -40 deg.C; (B) 2 to 50% by weight of at least one (meth) acrylic or vinyl monomer capable of yielding a homopolymer having a glass transition temperature equal to 0 deg.C; (C) 0.5 to 6% by weight of at least one (meth) acrylic carboxylic; (D) 0 to 5% by weight of at least one (meth) acrylic acid ethoxylated with 1 to 20 moles of ethylene; (E) 0.05 to 1% by weight of at least one (meth) acrylic or vinyl monomer having a ureido group; (F) 0 to 2% by weight of at least one acrylic or vinyl monomer carrying a sulphonate functional group, said polymer having a glass transition temperature equal to -25 deg.C, and the polymerization being conducted in the presence at least one transfer agent employed in a proportion of 0.05 to 0.25% by weight based on the monomers.