| abstract |
The invention belongs to field of light-sensitive high molecular materials.After hydrogen-capture-type light initiator absorbs luminous energy, bimolecular effect occurs in excitation state and aided initiating, generates living radical, causes monomer polymerization.A kind of mono-stripped hydrogen light initiating agent of benzophenone structural for introducing the alkyl chain containing unsaturated bond in the molecular structure is synthesized for raw material using 4- dihydroxy benaophenonel and bromopropene herein.The present invention provides the preparation methods of this benzophenone analog derivative photoinitiator, reaction process is simple, reaction condition is mild, the maximum absorption wavelength of product has a degree of red shift with respect to benzophenone (BP), and its absorbing ability greatly enhances, the efficiency for causing oligomer is improved to some extent compared with conventional benzophenone, and properties are superior to benzophenone, benzophenone can be substituted, is had wide practical use in UV curing field. |