| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a photoimageable composition which can suitably be used in the manufacture of printed circuit boards. <P>SOLUTION: The negative-acting photoimageable composition comprises a polymeric binder of 30-80 wt.%, a photopolymerizable compound of 5-50 wt.%, and a photoinitiator of 1.5-20 wt.%. The polymeric binder contains as a polymerized unit obtained from at least one acrylate compound expressed by a formula (wherein, R1 is H or methyl; and R<SB>2</SB>, R<SB>3</SB>, R<SB>4</SB>and R<SB>5</SB>independently represent H, a halogen, or a substituted or unsubstituted 1-10C alkyl). <P>COPYRIGHT: (C)2007,JPO&INPIT |
