| abstract |
The present invention relates to a benzylidene phthalimide monomer, a method for preparing the same, a polymer comprising the same, an optical alignment film including the same, and a retardation film including the same, wherein the benzylidene phthalimide monomer includes a photoalignable functional group and a polymerizable functional group It is included, and is represented by the following formula (1). [Chemical Formula 1] R 1 , R 2 , R 3 , R 4 , a, b and c are the same as defined above. The benzylidene phthalimide monomer has orientation by photoreaction, and is excellent in thermal stability and photoreaction rate. |