Synthesis of Methacryl Monomer Having a 6-Chloropyridyl Group and Their Application to Photo-adhesive Material

Photo-adhesive materials for adhesion between dissimilar materials have been desired in industrial manufacturing. We designed and synthesized a methacryl monomer having a 6-chloropyridyl group. A photo-adhesive material was prepared with the monomer, 2-hydroxyethyl methacrylate and a photo-radical initiator. Photo-adhesion was performed between a glass substrate and another substrate (glass, metals, and polymers), with 2 J/cm2 of UV irradiation at a wavelength of 365 nm. Shear stress of 5-12 MPa was recorded, which would result from formation of cured adhesive layer in a radical UV curing process. XPS spectral measurement in the N1s region showed that 6-chloropyridyl group would interact with copper surface through nitrogen atom of the pyridine ring.