The invention relates to 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.
本发明涉及柔性的、可
水溶液加工的、可感光的覆盖层组合物,该组合物具有良好的粘附性、释放性和抗(不需要的)晕染性。本发明的覆盖层组合物包括
丙烯酸低 Tg 接枝共聚物粘合剂组分,该组分具有耐碱骨架段和由亲
水分子组成的垂臂段。可选地,覆盖层还包括
噻吩类附着力
促进剂,以进一步改善附着力特性。