Pressure sensitive adhesive, particularly for apolar surfaces

A pressure sensitive adhesive based on block copolymers, said block copolymers having at least one unit composed of three successive polymer blocks, comprising alternating blocks P(A) and P(B), wherein

• P(A) represents a copolymer block obtained from a component A which is comprised of at least two monomers A1, A2, the polymer block P(A) having a softening temperature of from −80° C. to 0° C.,
• at least one of the monomers A1 of component A is an acrylic or methacrylic acid derivative of the general formula
• CH2═CH(RI)(COORII) (I)
• in which RI=H or CH3 and RII is an aliphatic linear, branched or cyclic, substituted or unsubstituted, saturated or unsaturated alkyl radical having from 1 to 20 carbon atoms,
• at least one of the monomers A2 of component A is an acrylated monomer of the general formula
• CH2═CH(RIII)(COORIV) (II)
• in which RIII=H or CH3 and RIV is an oligomeric or polymeric glycol with at least two glycol units,
• P(B) represents a homopolymer or copolymer block obtained from a component B which is composed of at least one monomer B1, the polymer block P(B) having a softening temperature of from 20° C. to 175° C., and
• the polymer blocks P(A) are not homogeneously miscible with the polymer blocks P(B).