| abstract |
Disclosed is a polyamic acid that provides an imidized polymer having a specific structure having a high refractive index, excellent transparency, and excellent heat resistance. A polyamic acid having a structure represented by the following general formula (1). [In the formula (1), R represents a tetravalent organic group, each R 1 independently represents an alkyl group having 1 to 3 carbon atoms, a represents each independently an integer of 0 to 4, m Represents an integer of 1 to 100,000. ] [Selection] Figure 2 |