MANUFACTURING METHOD OF UV CURABLE ACRYLIC POLYMER HAVING BENZOPHENONE GROUP, UV CURABLE ACRYLIC POLYMER MANUFACTURED THEREFROM AND UV CURABLE ADHESIVE COMPOSITION CONTAINING THE SAME

摘要

The method for preparing a UV-curable acrylic polymer having a benzophenone group according to the present invention includes: (S1) preparing a UV-polymerizable monomer composition comprising an acrylic monomer having a benzophenone group, an acrylic monomer not having a UV reactive group, and a photo initiator; And (S2) irradiating the UV polymerizable monomer composition with UV having only a wavelength band exceeding 365 nm using a UV light emitting diode. According to the manufacturing method of the present invention, since a UV-curable acrylic polymer having a benzophenone group, which is a UV-reactive group, is hardly crosslinked, it is useful as a component of a UV-curable acrylic adhesive composition used for a hot-melt acrylic adhesive.