| abstract |
The present invention relates to a fluorene-based resin polymer, a method for preparing the same, and a negative photosensitive resin composition comprising the same as a binder resin, comprising: reacting a diol compound containing a fluorene group with a diisocyanate; Reacting by adding an acid dianhydride to the reactant; And it relates to a method for producing a fluorene-based resin polymer comprising a urethane group comprising the step of reacting by adding an acid anhydride to the reactant. According to the present invention, in spite of the low molecular weight in the photosensitive resin composition, it is excellent in chemical resistance and development margin, and can provide improved sensitivity, as well as acting as a linker and reacting with alcohol by introducing an acid dianhydride. The role of developability due to the generated acid groups can be simultaneously satisfied, and desired molecular weight and acid value can be obtained by appropriately adjusting the amount of the acid dianhydride. |