| 摘要 |
<p>PURPOSE:To provide the titled ink having high rate of cure on a copper plate, and giving a cured film having high hardness, by using specific amounts of a specific epoxy resin, a mixture of 2-hydroxyethyl (meth)acrylate and a polyfunctional (meth)acrylate, etc. as essential components. CONSTITUTION:The objective ink contains (A) 10-50pts.wt. of an epoxy resin composed of an epoxy-containing diacrylate compound of bisphenol A and/or novolac and having a molecular weight of 400-2,500, (B) 10-60pts.wt. of a reactive monomer mixture consisting of (i) 2-hydroxyethyl (meth)acrylate and (ii) a polyfunctional (meth)acrylate, (C) 1-8pts.wt. of a photosensitizer composed of a mixture of benzophenone and an aromatic tertiary amine wherein the weight ratio of benzophenone/tertiary amine is 0.5-2.0, and (D) 10-50pts.wt. of talc and/or calcium carbonate as fillers. The compound (ii) of the component (B) is preferably a trifunctional acrylate, and the weight ratio of i/ii is preferably 0.5-1.0.</p> |
