Patent ID: 7951868
Filing Date: 2011-05-31
Classification: C08G,C08L,C09D,H05K

Abstract:
1. An overcoat ink for overcoating flexible circuits comprising a carboxyl group-containing polyurethane produced by reacting: (A) a polyisocyanate compound; (B) a polycarbonate diol having: (C) a carboxyl group-containing dihydroxy compound; (D) an optional monohydroxy compound; and (E) an optional monoisocyanate compound; and an organic solvent, wherein the polyisocyanate compound (A) contains at least 10 mol % relative to the total (100 mol %) thereof of an aromatic and/or an alicyclic compound of 6 to 30 carbon atoms except the carbon atom in the isocyanate group (NCO group).