Two-part polyurethane-(meth) acrylic hybrid adhesive composition

A two-part polyurethane-(meth)acrylic hybrid adhesive composition comprising:

• Part A):
• A1) a polyol;
• A2) a cure accelerator selected from saccharin;
• saccharin derivatives in which the hydrogen atom in —NH— is substituted by a hydroxyl group or an alkoxy group;
• toluidines, such as N,N-diethyl-p-toluidine and N,N-dimethyl-o-toluidine;
• acetyl phenylhydrazine;
• compounds of formulae (1) and (2);
• and mixtures thereof;
• wherein R1, R2 and R3 in formula (1) and R1, R2 and R4 in formula (2) are each independently selected from H or C1-4 alkyl;
• Z is a carbon-carbon single bond or carbon-carbon double bond;
• p is an integer of 1 to 5;
• A3) a peroxide;
• A4) optionally, a (meth)acrylic component;
• Part B):
• B1) a polyisocyanate,
• B2) a copper (II) based catalyst,
• B3) optionally, a (meth)acrylic component;
• provided that the (meth)acrylic component is present in part A only, or in part B only or in both part A and part B.