Adhesive composition, varnish, adhesive film and wiring film

摘要

Provided are an adhesive composition with good storage stability, heat resistance, moisture resistance reliability, and adhesion properties; and a curl- and heat-resistant adhesive film and a wiring film using the adhesive composition. The adhesive composition contains 100 parts by weight of a phenoxy resin (A) having plural alcoholic hydroxyl groups in a side chain of the molecule thereof; 2 to 60 parts by weight of a polyfunctional isocyanate compound (B) having an isocyanate group and at least one functional group selected from vinyl, acrylate, and methacrylate groups in the molecule thereof; and 5 to 30 parts by weight of a maleimide compound (C) having plural maleimide groups in the molecule thereof or/and reaction product thereof, in which a total amount of the components (B) and (C) is from 7 to 60 parts by weight.

主权项

1. An adhesive composition comprising:
100 parts by weight of a phenoxy resin (A) having a plurality of alcoholic hydroxyl groups on the side chain thereof; 2 to 60 parts by weight of a polyfunctional isocyanate compound (B) having one isocyanate group and at least one functional group of a vinyl group, an acrylate group and a methacrylate group in the molecule thereof; 5 to 30 parts by weight of a maleimide compound (C) having a plurality of maleimide groups in the molecule thereof or/and a reaction product thereof, 0.001 to 0.1 part by weight of an urethanation catalyst (E), 0.0002 to 1 part by weight of a radical polymerization inhibitor (F), and 0.03 to 1 part by weight of a radical polymerization initiator (G) which has a 1-hour half life temperature of from 120° C. to 180° C., wherein a total amount of the component (B) and the component (C) is from 7 to 60 parts by weight.