申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0501433A1
公开(公告)日:1992-09-02
A novel class of interpenetrating polymer networks which are dispersible in conventional coating solvents is disclosed. Such dispersions are useful in preparing protective and/or decorative film coatings and are particularly useful in photosensitive or imaging formulations such as photoresists, solder masks and the like. These polymer networks are comprised of at least two interpenetrating crosslinked polymers. At least one of the polymer networks is formed by polymerization in a solvent. In one embodiment of this invention, at least one polymer network is prepared from macromers to produce a polymer system having functionalized branch or graft linear segments. The solvent dispersible interpenetrating networks of this invention are particularly useful as binders in addition polymerizable photosensitive compositions containing crosslinking monomers such as solder masks. Upon exposure to actinic radiation and suitable thermal curing, solder mask coatings of such photosensitive compositions form multiple, e.g., triple, interpenetrating polymer networks having superior toughness and flexibility.
本发明公开了一类可在传统涂料溶剂中分散的新型互穿聚合物网络。这类分散体可用于制备保护性和/或装饰性薄膜涂层,尤其适用于感光或成像配方,如光刻胶、阻焊层等。这些聚合物网络由至少两种互穿交联聚合物组成。其中至少一种聚合物网络是在溶剂中聚合形成的。在本发明的一个实施方案中,至少有一种聚合物网络是由大分子聚合物制备而成的,以产生具有官能化分支或接枝线性段的聚合物体系。本发明的溶剂可分散互穿网络在含有交联单体的可聚合光敏组合物(如焊接掩模)中用作粘合剂特别有用。在暴露于光辐射和适当的热固化后,这种光敏组合物的焊料掩模涂层会形成多重(如三重)互穿聚合物网络,具有优异的韧性和柔韧性。