Patent ID: 9404023
Filing Date: 2016-08-02
CPC Classification: C08F,C09J,Y10T

Claim Text:
1. An adhesive, comprising a polymer obtained by free-radical polymerization of ethylenically unsaturated compounds, the polymer comprising, in reacted form: (a) at least 50% by weight of at least one soft acrylate monomer that is an alkyl acrylate whose homopolymer has a glass transition temperature below 0° C., (b) at least 1% by weight of at least one ethylenically unsaturated nitrile, (c) at least 1% by weight of at least one hard acrylate monomer selected from the group consisting of an alkyl acrylate and an alkyl methacrylate, whose respective homopolymers have a glass transition temperature of at least 60° C., (d) at least 0.1% by weight of at least one ethylenically unsaturated acid monomer, (e) at least 0.01% by weight of at least one monomer having at least two non-conjugated, polymerizable vinyl groups, and (f) optionally other monomers different from the monomers (a)-(e), where the polymerization is performed by a staged polymerization comprising polymerizing 50-100% by weight of a total amount of the soft acrylate monomer (a) in a first polymerization stage, and polymerizing 10 to 60% by weight of a total amount of the hard acrylate monomer (c) in a second or subsequent polymerization stage.