Polycarbonate-modified urethane acrylate adhesive

摘要

@ There is disclosed a polycarbonate-modified urethane acrylate adhesive comprising:[A] a polycarbonate-modified urethane acrylate oligomer which is a reaction product of:(1) 100 parts by weight of a hydroxyl group-containing (meth)acrylate represented by the formula [I]:wherein R' represents a hydrogen atom or a methyl group; R² represents a substituted or unsubstituted hydrocarbon group ora group with a valence ofa having the hydrocarbon groups, which may be the same or different, bonded to each other with an ether bond or an ester bond and also having at least one hydroxyl group; and is an integer of 1 to 3,(2) 10 to 4,500 parts by weight of a bifunctional organic component comprising: (a) a polycarbonate diol represented by the formula [II]:wherein R³, which may be the same or different, represents divalent hydrocarbon groups having 2 to 15 carbon atoms or divalent groups comprising the hydrocarbon groups, which may be the same or different, bonded to each other with an ether bond or an ester bond, which hydrocarbon groups may be substituted with a halogen atom; and n is a number of 1 to 60 on the average, and(b) a bifunctional compound containing active hydrogen atom selected from the group consisting of alkylene glycol, its oxyacid ester, polyether diol, heterocyclic diol containing ether bond, polyester diol, thioether glycol and dithiol, containing 1 to 100 % by weight of(a) based on thetotal amount of the component (2); and(3) 0.005 to 50 parts by weight of an alkoxy silane containing amino group or its partial hydrolyzed condensate, and(4) a polyisocyanate containing 70 to 100 % of isocyanato groups of the theoretical amount reactive with the total active hydrogen atoms contained in the above components (1) to (3), and[B] a reactive diluent in an amount of 5 to 1,000 % by weight of the [A].