| 摘要 |
<p>A solvent free, radiation-curable composition consists of (A) about 20 - 98 wt.% of an ester of an ethylenically unsaturated acid and pentaerythritol, dipentaerythritol or a polypentaerythritol, (esp. pentaerythritol tri-, or tetra- acrylate), and (B) 80 - 2 wt.% of at least one halogenated hydrocarbon photoinitiator. The compsn. may be coated on a support film to form an element polymerisable on exposure to U.V., gamma or electron beam radiation.</p> |
