申请人:LOCTITE CORPORATION
公开号:EP0129443A2
公开(公告)日:1984-12-27
The present invention is a UV curable composition of organic ethylenic unsaturated monomers and an organic polysiloxane polymer which has benzoin ether photoinitiator moieties bound to a silicon atom of the polymer. The compositions cure to form unsaturated monomer/polyorganosiloxane graft copolymers with improved lowtemperature flexibility, weatherability, insulating properties and impact strength. The silicone bound photoinitiators of the invention also increase cure efficiency of the compositions over compositions of unbound benzoin photoinitiators since multiple polymer chains are simultaneously grafted to the same silicone backbone.
The compositions of the invention are useful in adhesives, printing inks, photoresists, lithographics, and in coatings for plastics, wood, paper, etc., to produce protective films with good weather resistance and water repellancy.
本发明是一种可紫外线固化的有机乙烯基不饱和单体和有机聚硅氧烷聚合物的组合物,该组合物的安息香醚光引发剂分子与聚合物的硅原子结合。组合物固化后形成的不饱和单体/聚有机硅氧烷接枝共聚物具有更好的低温柔韧性、耐候性、绝缘性和抗冲击强度。与未结合的安息香光引发剂的组合物相比,本发明的有机硅结合光引发剂还能提高组合物的固化效率,因为多条聚合物链会同时接枝到同一有机硅骨架上。
本发明的组合物可用于粘合剂、印刷油墨、光刻胶、平版印刷以及塑料、木材、纸张等的涂层,以生产具有良好耐候性和防水性的保护膜。