A flexible, aqueous processible, photoimagable coverlay compositions, having advantageous adhesion and release properties and resistance to (unwanted) haloing. The coverlay compositions of the present invention comprise an acrylic, low Tg, graft copolymer binder component, having an alkali resistant backbone-segment and a pendant arm segment comprising hydrophilic moieties. Optionally, the coverlay further comprises a thiophene-type adhesion promoter to further improve adhesion properties.
一种灵活、
水溶性、光敏覆盖层组合物,具有优异的粘附和释放性能以及抗(不需要的)晕影性能。本发明的覆盖层组合物包括具有耐碱骨架段和含亲
水性基团的悬臂臂段的
丙烯酸低Tg嫁接共聚物粘合剂组分。可选地,覆盖层进一步包括一种
噻吩型粘附
促进剂,以进一步改善粘附性能。